Tutorial/Links: https://hackerbot.net/tutorials/330-mod-apk
Home: https://hackerbot.net/
This is how to disassemble / decompile and extract source code (inline code) from APK files. You will not get the exact source code, but the code as it is sompiled by Android Stuio and as Android runs it.
This tutorial shows you how to decompile and recompile, but not how to mod code.
Also works for signed APKs and APK signing.

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