About Android Client

[plucky lynx]

i tried to connect server use 3.2 official client,but occur 4214 code. i want to know how to patch ua.dll for android client like pc. has anyone can help me,thank you.

[errant sentinel]

You need modded Genshin apk

Found in YuukiPS

Maybe this help

[plucky lynx]

Thank you

[bright thorn]

For android need patch lib/libil2cpp.so inside apk or download pre-patched apk

[plucky lynx]

where can i find the pre-patched apk?i tried to download like client of Yuuki,But I was scolded by the Tip message popped up by the software(About my use of packet capture software, but I just use my own dns server).

[bright thorn]

Can you patch it by yourself?
Or try:
https://github.com/Score-Inc/AnimeGamePatch
https://github.com/Score-Inc/PatchGenshinAPK
https://github.com/Score-Inc/GCAndroid

[plucky lynx]

thanks,now I solved the proxy and https certificate by myself but stuck at 4214code. It seems that the key of the client is wrong. Is the file Genshin_Impact_3.2-Termux.apk patched with the key?

[bright thorn]

You can use ApkTool to extract apk, patch lib/libil2cpp.so, rebuild APK by ApkTool and use apk-mitm to patch certificate + resign apk

[bright thorn]

Its works for me with root + mitmproxy on android

[plucky lynx]

thank you

[bright thorn]

How to patch apk (only apk, not libil2cpp.so):

1. Download official apk
2. Download ApkTool, using ApkTool extract apk to some folder and go inside, edit AndroidManifest.xml, set new package name package="HERE_NEW_PACKAGE_NAME" (name using in /Android/data/com.m**** data folder)
3. Replace lib/arm64-v8a/libil2cpp.so to patched libil2cpp.so (you can find it from others already patched.apk by using ApkTool too and pull already patched libil2cpp.so)
4. Build apk again by ApkTolol (drag and drop extracted folder to .bat script) (apk still unsigned). New apk in extracted-folder/dist
5. Install NodeJS and run npm install -g apk-mitm
6. From PC (not android) Run apk-mitm <path-to-apk> where <path-to-apk> is your-app.apk to patch certificates (you need patch a new builded apk in extracted-folder/dist) or try https://github.com/Score-Inc/PatchGenshinAPK if you dont want use apk-mitm
7. Upload new patched.apk to your phone, install it
8. Copy/Rename original data folder /Android/data/com.m***** to your folder with your name (which you set on step 2)
9. Use https://github.com/Score-Inc/GCAndroid to raise Grasscutter on your phone
10. Use https://github.com/Score-Inc/AnimeGamePatch to raise mitmproxy and set proxy in wifi settings (or use root mode proxy from AnimeGamePatch settings to enable "proxy all" and you can use it even on 4G, 5G networks)
11. Run app and play

[plucky lynx]

Thank you, I haven't been able to find which file it is that needs to be patched

[plucky lynx]

Do you have the libil2cpp.so file? I checked the MD5 and found that the yuuki client is the same file as the official one.