A PoC decompiler plugin for jadx-gui. Evaluates methods in runtime using frida and updates the decompiler output with the result. Main idea was to develop something specific to help solving the open obfuscator challenge.
Works only on static methods with a single string argument. Tested on jadx-gui v1.5.0.
Before:
Righ click on the method and select "Evaluate calls to this method":
After eval:
First copy or symlink the adb module from android sdk:
$ ln -s $NDK_HOME/python-packages/adb frida-proxy/adb
If you updated the protobuf, regenerate the python modules:
$ python -m grpc_tools.protoc -I src/main/proto --python_out=frida-proxy --pyi_out=frida-proxy --grpc_python_out=frida-proxy rpc.proto
Keep the frida-proxy daemon running on the side (dont forget to keep a phone or an emulator up):
$ cd frida-proxy
$ pip install -r requirements.txt
$ python main.py
Build the project:
$ ./gradlew dist
Install the plugin on jadx:
$ jadx plugins -j build/dist/jadx-eval-method.jar
Run jadx-gui:
$ jadx-gui challenge-pydroid.apk