bshastry / afl-sancov

AFL coverage tool using Clang SanitizerCoverage

afl-sancov

Whatis?

afl-sancov is a fork of afl-cov (version 0.5) that works on Clang/LLVM sanitizer instrumented binaries.

But why?

• Cannot use afl-cov (Gcov/lcov) reliably on crashing tests
• Coverage info from crashing tests can be used towards Spectrum based fault localization

Getting Started

See docs/Getting_started.md

Example and full usage

See docs/Example.md

Directory structure for locating coverage files

• afl-sync-dir
  • sancov (Root dir for coverage info)
    • delta-diff (Dir for differential spectrum)
      • Bunch of json files summarizing delta coverage between crashing and queue inputs

Issues and pull requests

I am happy to take both. If there is demand, I can work on polishing the delta-diff feature

Credits

A large part of afl-sancov development and testing has been possible due to Michael Rash's excellent tool and the open-source fuzzing community at afl-users and beyond. So, thank you all :-)