Austin Seipp a11078a78c nixpkgs: afl - add QEMU support

This adds support for `afl-fuzz -Q`, which can be used to instrument
arbitrary black-box binary code for fuzz testing using American Fuzzy
Lop through QEMU emulation.

This requires a custom QEMU 2.2.0 build of the Linux userspace emulators
(system emulators aren't required) with some custom patches. Furthermore
we have to patch the patches a little to make the build more sane (there
are some notes in the README about this).

Overall, the addition of this feature by default doesn't significantly
impact build times (since building QEMU for only one target builds only
a fraction of the source code, and many features are disabled), so it's
enabled by default.

Signed-off-by: Austin Seipp <aseipp@pobox.com>

2015-03-22 22:52:57 -05:00

763 B

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Updating the QEMU patches

When updating to the latest American Fuzzy Lop, make sure to check for any new patches to qemu for binary fuzzing support:

https://github.com/mirrorer/afl/tree/master/qemu_mode

Be sure to check the build script and make sure it's also using the right QEMU version and options in qemu.nix:

https://github.com/mirrorer/afl/blob/master/qemu_mode/build_qemu_support.sh

afl-config.h and afl-qemu-cpu-inl.h are part of the afl source code, and copied from config.h and afl-qemu-cpu-inl.h appropriately. The QEMU patches need to be slightly adjusted to #include these files (the patches try to otherwise include files like ../../config.h which causes the build to fail). See qemu.nix for details.

763 B Raw Blame History

Updating the QEMU patches

763 B

Raw Blame History