OLLVM++

Obfuscator refactored and extended from OLLVM.

Environment

Ubuntu 18.04.5 LTS
LLVM 12.0.1
Clang 12.0.1
CMake 3.21.1

Usage

Compile Obfuscation Passes

if [ ! -d "Build" ]; then
    mkdir Build
fi
cd ./Build
cmake ../Transforms
make

Generate LLVM IR

clang -S -emit-llvm TestProgram.cpp -o IR/orig.ll

Control Flow Flattening

opt -lowerswitch -S IR/orig.ll -o IR/lowerswitch.ll
opt -load ../Build/LLVMObfuscator.so -fla -split_num 3 -S IR/lowerswitch.ll -o IR/fla.ll
clang IR/fla.ll -o Bin/fla

Bogus Control Flow

opt -load ../Build/LLVMObfuscator.so -bcf -bcf_loop 1 -split_num 3 -S IR/orig.ll -o IR/bcf.ll
clang IR/bcf.ll -o Bin/bcf

Instruction Substitution

opt -load ../Build/LLVMObfuscator.so -sub -sub_loop 2 -S IR/orig.ll -o IR/sub.ll
clang IR/sub.ll -o Bin/sub

Random Control Flow

opt -load ../Build/LLVMObfuscator.so -rcf -S IR/orig.ll -o IR/rcf.ll
llc -filetype=obj -mattr=+rdrnd IR/rcf.ll -o Bin/rcf.o
clang Bin/rcf.o -o Bin/rcf

Constant Substitution

opt -load ../Build/LLVMObfuscator.so -csub -csub_loop 2 -S IR/orig.ll -o IR/csub.ll
clang IR/csub.ll -o Bin/csub

Remote0/OLLVM-plusplus

OLLVM++

Environment

Usage

Compile Obfuscation Passes

Generate LLVM IR

Control Flow Flattening

Bogus Control Flow

Instruction Substitution

Random Control Flow

Constant Substitution

Features

Control Flow Flattening

Bogus Control Flow

Instruction Substitution

Random Control Flow

Constant Substitution