Coverage-Guided Protocol Fuzzer for Vulnerability Discovery. Distributed architecture with smart mutation engine.
ProtoCrash implements a coverage-guided feedback loop similar to AFL but optimized for protocols. It uses a smart mutation engine that understands protocol structures (HTTP, DNS, SMTP) to generate effective test cases.
Input Corpus → Smart Mutation → Target Execution
↑ ↓
└────── Coverage Feedback ───────┘
[Worker 1] ──┐
[Worker 2] ──┼── [Coordinator] ──→ [Report]
[Worker N] ──┘ (Sync)
Context-aware mutators for HTTP, DNS, and binary protocols. Bit flips, byte arithmetic, and dictionary-based strategies.
Scalable master-worker architecture. Synchronizes interesting test cases across nodes for maximum throughput.
Automated crash deduplication and exploitability assessment. Generates detailed HTML reports with reproduction steps.
ProtoCrash is built for security researchers who need a reliable, extensible fuzzer for network services. It bridges the gap between dumb fuzzers and complex commercial tools.