fridroid-unpacker

Defeat Java packers via Frida instrumentation

Description

Use the method OpenMemory or OpenCommon (after Android N) in libart.so/libdexfile.so to get the address of the dex in memory, calculate the size of the dex file, and dump the dex from memory.

Usage

$ frida -U -f com.package.target -l dexDump.js --no-pause

References

• https://www.frida.re/docs/home/
• frida-unpack (dstmath) https://github.com/dstmath/frida-unpack
• Frida-Android-unpack (xiaokanghub) https://github.com/xiaokanghub/Frida-Android-unpack

Supported OS: Android 4.4 - Android 11

Tested Packers

• Jiagu
• DexProtector
• DexGuard
• Yidun
• Tencent Legu
• Mobile Tencent Protect