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Yet another llvm based obfuscator

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goron

Yet another llvm based obfuscator.

当前支持特性:

  • 混淆过程间相关
  • 间接跳转,并加密跳转目标(-mllvm -irobf-indbr)
  • 间接函数调用,并加密目标函数地址(-mllvm -irobf-icall)
  • 间接全局变量引用,并加密变量地址(-mllvm -irobf-indgv)
  • 字符串(c string)加密功能(-mllvm -irobf-cse)
  • 过程相关控制流平坦混淆(-mllvm -irobf-cff)

混淆效果

  • 未混淆

  • 间接跳转(-mllvm -irobf-indbr)

  • 间接函数调用(-mllvm -irobf-icall)

  • 间接全局变量引用(-mllvm -irobf-indgv)

  • 字符串(c string)加密功能(-mllvm -irobf-cse)

  • 过程相关控制流平坦混淆(-mllvm -irobf-cff)

下载

git clone https://github.com/amimo/goron.git -b llvm-7.1.0

编译

cd goron
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_ENABLE_PROJECTS=clang -G "Unix Makefiles" ../llvm
make -j12

使用

跟ollvm类似,可通过编译选项开启相应混淆. 如启用间接跳转混淆

$ path_to_the/build/bin/clang -mllvm -irobf -mllvm --irobf-indbr test.c

对于使用autotools的工程

$ CC=path_to_the/build/bin/clang or CXX=path_to_the/build/bin/clang
$ CFLAGS+="-mllvm -irobf -mllvm --irobf-indbr" or CXXFLAGS+="-mllvm -irobf -mllvm --irobf-indbr" (or any other obfuscation-related flags)
$ ./configure
$ make

参考资源

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