Code Lybyrinth (LLVM Obfuscation Pass)

Features

• Fake Instruction Inserter
• Dynamic Call Converter
• Branch Address Encryptor
• String Encryptor

Build for iOS (on Mac)

Compile Clang

How to build clang and swift‐frontend (on Mac M2)

Compile Pass Plugin

$ git clone https://github.com/codetronik/CodeLabyrinth
$ cd CodeLabyrinth
$ cmake -B Release -DLLVM_DIR=/SWIFT_CLONE_PATH/build/buildbot_osx/llvm-macosx-arm64/lib/cmake -DCMAKE_OSX_ARCHITECTURES=arm64
$ cd Release
$ make -j16

Xcode's Clang option

Project Setting -> Apple Clang -> Custom Compiler Flags -> Other C Flags -> Release

-fpass-plugin=/libCodeLabyrinth.dylib -DCMAKE_OSX_ARCHITECTURES=arm64

Build for Android (on Windows)

Compile Clang

How to compile LLVM Pass for Android using Visual Studio

Compile Pass Plugin

$ git clone https://github.com/codetronik/CodeLabyrinth
$ notepad.exe CodeLabyrinth\windows\Directory.build.props

Modify LLVMINstallDir then open CodeLabyrinth.sln and build.

Visual Studio's Clang option

Project Setting -> Configuration Properties -> C/C++ -> Command Line -> Additional Options

-fpass-plugin=\CodeLabyrinth.dll

Test Environment

• iOS : C++, Objective C++ / Xcode 15.0.1 / iPhone 12 mini
• Android : C++ / Visual Studio 2022 / Galaxy Note S20
• Windows : C++ with Command Line