American fuzzy lop is a security-oriented fuzzer that employs a novel type
of compile-time instrumentation and genetic algorithms
to automatically discover clean, interesting test cases that trigger
new internal states in the targeted binary.
This substantially improves the functional coverage for the fuzzed code.
The compact synthesized corpora produced by the tool are also useful
for seeding other, more labor- or resource-intensive testing regimes down the road.

Compared to other instrumented fuzzers, afl-fuzz is designed to be practical:
it has modest performance overhead, uses a variety of highly effective fuzzing strategies
and effort minimization tricks, requires essentially no configuration,
and seamlessly handles complex, real-world use cases - say,
common image parsing or file compression libraries.

• Paul Wolneykien
• Aleksei Nikiforov

• afl
• afl-debuginfo