===============
Sister projects
===============

  This doc lists some of the projects that are inspired by, derived from,
  designed for, or meant to integrate with AFL. See README for the general
  instruction manual.

-------------------------------------------
Support for other languages / environments:
-------------------------------------------

Python AFL (Jakub Wilk)
-----------------------

  Allows fuzz-testing of Python programs. Uses custom instrumentation and its
  own forkserver.

  http://jwilk.net/software/python-afl

Go-fuzz (Dmitry Vyukov)
-----------------------

  AFL-inspired guided fuzzing approach for Go targets:

  https://github.com/dvyukov/go-fuzz

afl.rs (Keegan McAllister)
--------------------------

  Allows Rust features to be easily fuzzed with AFL (using the LLVM mode).

  https://github.com/kmcallister/afl.rs

OCaml support (KC Sivaramakrishnan)
-----------------------------------

  Adds AFL-compatible instrumentation to OCaml programs.

  https://github.com/ocamllabs/opam-repo-dev/pull/23
  http://canopy.mirage.io/Posts/Fuzzing

AFL for GCJ Java and other GCC frontends (-)
--------------------------------------------

  GCC Java programs are actually supported out of the box - simply rename
  afl-gcc to afl-gcj. Unfortunately, by default, unhandled exceptions in GCJ do
  not result in abort() being called, so you will need to manually add a
  top-level exception handler that exits with SIGABRT or something equivalent.

  Other GCC-supported languages should be fairly easy to get working, but may
  face similar problems. See https://gcc.gnu.org/frontends.html for a list of
  options.

AFL-style in-process fuzzer for LLVM (Kostya Serebryany)
--------------------------------------------------------

  Provides an evolutionary instrumentation-guided fuzzing harness that allows
  some programs to be fuzzed without the fork / execve overhead. (Similar
  functionality is now available as the "persistent" feature described in
  ../llvm_mode/README.llvm.)

  http://llvm.org/docs/LibFuzzer.html

AFL fixup shim (Ben Nagy)
-------------------------

  Allows AFL_POST_LIBRARY postprocessors to be written in arbitrary languages
  that don't have C / .so bindings. Includes examples in Go.

  https://github.com/bnagy/aflfix

TriforceAFL (Tim Newsham and Jesse Hertz)
-----------------------------------------

  Leverages QEMU full system emulation mode to allow AFL to target operating
  systems and other alien worlds:

  https://www.nccgroup.trust/us/about-us/newsroom-and-events/blog/2016/june/project-triforce-run-afl-on-everything/

WinAFL (Ivan Fratric)
---------------------

  As the name implies, allows you to fuzz Windows binaries (using DynamoRio).

  https://github.com/ivanfratric/winafl

  Another Windows alternative may be:

  https://github.com/carlosgprado/BrundleFuzz/

----------------
Network fuzzing:
----------------

Preeny (Yan Shoshitaishvili)
----------------------------

  Provides a fairly simple way to convince dynamically linked network-centric
  programs to read from a file or not fork. Not AFL-specific, but described as
  useful by many users. Some assembly required.

  https://github.com/zardus/preeny

-------------------------------------------
Distributed fuzzing and related automation:
-------------------------------------------

roving (Richo Healey)
---------------------

  A client-server architecture for effortlessly orchestrating AFL runs across
  a fleet of machines. You don't want to use this on systems that face the
  Internet or live in other untrusted environments.

  https://github.com/richo/roving

Distfuzz-AFL (Martijn Bogaard)
------------------------------

  Simplifies the management of afl-fuzz instances on remote machines. The
  author notes that the current implementation isn't secure and should not
  be exposed on the Internet.

  https://github.com/MartijnB/disfuzz-afl

AFLDFF (quantumvm)
------------------

  A nice GUI for managing AFL jobs.

  https://github.com/quantumvm/AFLDFF

afl-launch (Ben Nagy)
---------------------

  Batch AFL launcher utility with a simple CLI.

  https://github.com/bnagy/afl-launch

AFL Utils (rc0r)
----------------

  Simplifies the triage of discovered crashes, start parallel instances, etc.

  https://github.com/rc0r/afl-utils

  Another crash triage tool:

  https://github.com/floyd-fuh/afl-crash-analyzer

afl-fuzzing-scripts (Tobias Ospelt)
-----------------------------------

  Simplifies starting up multiple parallel AFL jobs.

  https://github.com/floyd-fuh/afl-fuzzing-scripts/

afl-sid (Jacek Wielemborek)
---------------------------

  Allows users to more conveniently build and deploy AFL via Docker.

  https://github.com/d33tah/afl-sid

  Another Docker-related project:

  https://github.com/ozzyjohnson/docker-afl

afl-monitor (Paul S. Ziegler)
-----------------------------

  Provides more detailed and versatile statistics about your running AFL jobs.

  https://github.com/reflare/afl-monitor

-----------------------------------------------------------
Crash triage, coverage analysis, and other companion tools:
-----------------------------------------------------------

afl-crash-analyzer (Tobias Ospelt)
----------------------------------

  Makes it easier to navigate and annotate crashing test cases.

  https://github.com/floyd-fuh/afl-crash-analyzer/

Crashwalk (Ben Nagy)
--------------------

  AFL-aware tool to annotate and sort through crashing test cases.

  https://github.com/bnagy/crashwalk

afl-cov (Michael Rash)
----------------------

  Produces human-readable coverage data based on the output queue of afl-fuzz.

  https://github.com/mrash/afl-cov

afl-sancov (Bhargava Shastry)
-----------------------------

  Similar to afl-cov, but uses clang sanitizer instrumentation.

  https://github.com/bshastry/afl-sancov

RecidiVM (Jakub Wilk)
---------------------

  Makes it easy to estimate memory usage limits when fuzzing with ASAN or MSAN.

  http://jwilk.net/software/recidivm

aflize (Jacek Wielemborek)
--------------------------

  Automatically build AFL-enabled versions of Debian packages.

  https://github.com/d33tah/aflize

afl-ddmin-mod (Markus Teufelberger)
-----------------------------------

  A variant of afl-tmin that uses a more sophisticated (but slower)
  minimization algorithm.

  https://github.com/MarkusTeufelberger/afl-ddmin-mod

afl-kit (Kuang-che Wu)
----------------------

  Replacements for afl-cmin and afl-tmin with additional features, such
  as the ability to filter crashes based on stderr patterns.

  https://github.com/kcwu/afl-kit

-------------------------------
Narrow-purpose or experimental:
-------------------------------

Cygwin support (Ali Rizvi-Santiago)
-----------------------------------

  Pretty self-explanatory. As per the author, this "mostly" ports AFL to
  Windows. Field reports welcome!

  https://github.com/arizvisa/afl-cygwin

Pause and resume scripts (Ben Nagy)
-----------------------------------

  Simple automation to suspend and resume groups of fuzzing jobs.

  https://github.com/bnagy/afl-trivia

Static binary-only instrumentation (Aleksandar Nikolich)
--------------------------------------------------------

  Allows black-box binaries to be instrumented statically (i.e., by modifying
  the binary ahead of the time, rather than translating it on the run). Author
  reports better performance compared to QEMU, but occasional translation
  errors with stripped binaries.

  https://github.com/vrtadmin/moflow/tree/master/afl-dyninst

AFL PIN (Parker Thompson)
-------------------------

  Early-stage Intel PIN instrumentation support (from before we settled on
  faster-running QEMU).

  https://github.com/mothran/aflpin

AFL-style instrumentation in llvm (Kostya Serebryany)
-----------------------------------------------------

  Allows AFL-equivalent instrumentation to be injected at compiler level.
  This is currently not supported by AFL as-is, but may be useful in other
  projects.

  https://code.google.com/p/address-sanitizer/wiki/AsanCoverage#Coverage_counters

AFL JS (Han Choongwoo)
----------------------

  One-off optimizations to speed up the fuzzing of JavaScriptCore (now likely
  superseded by LLVM deferred forkserver init - see llvm_mode/README.llvm).

  https://github.com/tunz/afl-fuzz-js

AFL harness for fwknop (Michael Rash)
-------------------------------------

  An example of a fairly involved integration with AFL.

  https://github.com/mrash/fwknop/tree/master/test/afl

Building harnesses for DNS servers (Jonathan Foote, Ron Bowes)
--------------------------------------------------------------

  Two articles outlining the general principles and showing some example code.

  https://www.fastly.com/blog/how-to-fuzz-server-american-fuzzy-lop
  https://goo.gl/j9EgFf

Fuzzer shell for SQLite (Richard Hipp)
--------------------------------------

  A simple SQL shell designed specifically for fuzzing the underlying library.

  http://www.sqlite.org/src/artifact/9e7e273da2030371

Support for Python mutation modules (Christian Holler)
------------------------------------------------------

  https://github.com/choller/afl/blob/master/docs/mozilla/python_modules.txt

Support for selective instrumentation (Christian Holler)
--------------------------------------------------------

  https://github.com/choller/afl/blob/master/docs/mozilla/partial_instrumentation.txt

Kernel fuzzing (Dmitry Vyukov)
------------------------------

  A similar guided approach as applied to fuzzing syscalls:

  https://github.com/google/syzkaller/wiki/Found-Bugs
  https://github.com/dvyukov/linux/commit/33787098ffaaa83b8a7ccf519913ac5fd6125931
  http://events.linuxfoundation.org/sites/events/files/slides/AFL%20filesystem%20fuzzing%2C%20Vault%202016_0.pdf

Android support (ele7enxxh)
---------------------------

  Based on a somewhat dated version of AFL:

  https://github.com/ele7enxxh/android-afl

CGI wrapper (floyd)
-------------------

  Facilitates the testing of CGI scripts.

  https://github.com/floyd-fuh/afl-cgi-wrapper

Fuzzing difficulty estimation (Marcel Boehme)
---------------------------------------------

  A fork of AFL that tries to quantify the likelihood of finding additional
  paths or crashes at any point in a fuzzing job.

  https://github.com/mboehme/pythia