libafl

What problem does it solve?

LibAFL provides a modular fuzzing library that enables building custom fuzzers with flexible components and pluggable strategies, replacing monolithic fuzzers with a reusable toolkit.

Core Features & Use Cases

• Modular architecture: Observers, Feedback, Objective, State, Mutators, Scheduler, and Executor.
• Dual usage: drop-in replacement for libFuzzer or fully custom fuzzers; excellent for research, experimentation, and complex mutation/feedback strategies.
• Use cases include designing custom mutation policies, integrating with Rust projects, and running large-scale fuzzing campaigns.

Quick Start

Install Rust and LLVM toolchains, scaffold a Rust project, add LibAFL dependencies, and run a minimal fuzzing example or use provided LibAFL fuzzers as templates.