AFL++ Fuzz Testing with Rust

This repository contains a lightweight Rust program designed to demonstrate fuzz testing with AFL++. The example program reads input from a file, processes the data, and intentionally includes a potential out-of-bounds error. By using AFL++, we can generate crashes and identify flaws in the code, providing a practical introduction to fuzzing techniques and AFL++ usage.

Getting Started

Prerequisites

1. afl.rs installed

Steps

1. Clone the repository:

   $ git clone https://github.com/BowTiedRadone/rust-aflPlusPlus

2. Build the program using cargo afl:

   $ cd rust-aflPlusPlus
   $ cargo afl build

3. Test the test cases from the corpus directory manually:

    $ cat ./corpus/test.txt
    test
   
    $ ./target/debug/afl-rust ./corpus/test.txt
    Buffer content: test
   
    $ cat ./corpus/crash.txt
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
   
    $ ./target/debug/afl-rust ./corpus/crash.txt
    thread 'main' panicked at src/main.rs:29:36:
    index out of bounds: the len is 101 but the index is 201
    note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

4. Instructions on how to run AFL++ against the generated binary will be provided soon!

Conclusion

Stay tuned for updates!