VisFuzz is an interactive tool for better understanding and intervening fuzzing process via real-time visualization. VisFuzz helps the test engineer to: 1) drill down into the bottleneck from function level, basic block level to statement level; 2) learn semantic context from basic blocks and source code; 3) construct targeted inputs or update the test driver to increase coverage.

VisFuzz: Understanding and Intervening Fuzzing with Interactive Visualization, ASE 2019.

preprint paper

demo video link

1. Install LLVM (>= 8.0), python3.

2. Download and compile VisFuzz:

    git clone https://github.com/ChijinZ/VisFuzz.git
    cd VisFuzz
    export DEMO_PATH=$PWD/demo
    export TOOL_PATH=$PWD/visfuzz
    cd $TOOL_PATH/fuzz
    mkdir build
    cd build
    cmake ../llvm/ .
    make
    export VISFUZZ_BUILD=$PWD
    cd $TOOL_PATH/fuzz/afl
    make
   

3. Fuzz && visualize demo:

    cd $DEMO_PATH/re2
    sh compile.sh
    cd repo
    mkdir in
    echo a>in/seed
    nohup $TOOL_PATH/fuzz/afl/afl-fuzz -i in -o out ./app @@ &
    python $TOOL_PATH/open_file_server.py 6767
   
    # Open a new terminal
    cd $TOOL_PATH/visualization
    python -m http.server 8000
   

4. Open browser (Chrome is recommended) and visit localhost:8000