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88 lines
3.1 KiB
Markdown
88 lines
3.1 KiB
Markdown
# AFL "Life Pro Tips"
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Bite-sized advice for those who understand the basics, but can't be bothered
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to read or memorize every other piece of documentation for AFL.
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## Get more bang for your buck by using fuzzing dictionaries.
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See [dictionaries/README.md](../dictionaries/README.md) to learn how.
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## You can get the most out of your hardware by parallelizing AFL jobs.
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See [parallel_fuzzing.md](parallel_fuzzing.md) for step-by-step tips.
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## Improve the odds of spotting memory corruption bugs with libdislocator.so!
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It's easy. Consult [utils/libdislocator/README.md](../utils/libdislocator/README.md) for usage tips.
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## Want to understand how your target parses a particular input file?
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Try the bundled `afl-analyze` tool; it's got colors and all!
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## You can visually monitor the progress of your fuzzing jobs.
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Run the bundled `afl-plot` utility to generate browser-friendly graphs.
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## Need to monitor AFL jobs programmatically?
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Check out the `fuzzer_stats` file in the AFL output dir or try `afl-whatsup`.
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## Puzzled by something showing up in red or purple in the AFL UI?
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It could be important - consult docs/status_screen.md right away!
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## Know your target? Convert it to persistent mode for a huge performance gain!
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Consult section #5 in README.llvm.md for tips.
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## Using clang?
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Check out instrumentation/ for a faster alternative to afl-gcc!
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## Did you know that AFL can fuzz closed-source or cross-platform binaries?
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Check out qemu_mode/README.md and unicorn_mode/README.md for more.
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## Did you know that afl-fuzz can minimize any test case for you?
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Try the bundled `afl-tmin` tool - and get small repro files fast!
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## Not sure if a crash is exploitable? AFL can help you figure it out. Specify
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`-C` to enable the peruvian were-rabbit mode.
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## Trouble dealing with a machine uprising? Relax, we've all been there.
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Find essential survival tips at http://lcamtuf.coredump.cx/prep/.
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## Want to automatically spot non-crashing memory handling bugs?
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Try running an AFL-generated corpus through ASAN, MSAN, or Valgrind.
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## Good selection of input files is critical to a successful fuzzing job.
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See docs/perf_tips.md for pro tips.
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## You can improve the odds of automatically spotting stack corruption issues.
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Specify `AFL_HARDEN=1` in the environment to enable hardening flags.
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## Bumping into problems with non-reproducible crashes?
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It happens, but usually
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isn't hard to diagnose. See section #7 in README.md for tips.
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## Fuzzing is not just about memory corruption issues in the codebase.
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Add some
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sanity-checking `assert()` / `abort()` statements to effortlessly catch logic bugs.
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## Hey kid... pssst... want to figure out how AFL really works?
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Check out docs/technical_details.md for all the gory details in one place!
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## There's a ton of third-party helper tools designed to work with AFL!
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Be sure to check out docs/sister_projects.md before writing your own.
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## Need to fuzz the command-line arguments of a particular program?
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You can find a simple solution in utils/argv_fuzzing.
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## Attacking a format that uses checksums?
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Remove the checksum-checking code or use a postprocessor!
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See utils/custom_mutators/ for more.
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