82 lines
2.7 KiB
Nix
82 lines
2.7 KiB
Nix
{ stdenv, fetchurl, bash, callPackage, makeWrapper
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, clang, llvm, which, libcgroup
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}:
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let
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afl-qemu = callPackage ./qemu.nix {};
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qemu-exe-name = if stdenv.system == "x86_64-linux" then "qemu-x86_64"
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else if stdenv.system == "i686-linux" then "qemu-i386"
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else throw "afl: no support for ${stdenv.system}!";
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in
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stdenv.mkDerivation rec {
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name = "afl-${version}";
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version = "2.52b";
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src = fetchurl {
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url = "http://lcamtuf.coredump.cx/afl/releases/${name}.tgz";
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sha256 = "0ig0ij4n1pwry5dw1hk4q88801jzzy2cric6y2gd6560j55lnqa3";
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};
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# Note: libcgroup isn't needed for building, just for the afl-cgroup
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# script.
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buildInputs = [ makeWrapper llvm which ];
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buildPhase = ''
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make PREFIX=$out
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cd llvm_mode
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make PREFIX=$out
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cd ..
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'';
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installPhase = ''
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# Do the normal installation
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make install PREFIX=$out
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# Install the custom QEMU emulator for binary blob fuzzing.
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cp ${afl-qemu}/bin/${qemu-exe-name} $out/bin/afl-qemu-trace
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# Install the cgroups wrapper for asan-based fuzzing.
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cp experimental/asan_cgroups/limit_memory.sh $out/bin/afl-cgroup
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chmod +x $out/bin/afl-cgroup
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substituteInPlace $out/bin/afl-cgroup \
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--replace "cgcreate" "${libcgroup}/bin/cgcreate" \
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--replace "cgexec" "${libcgroup}/bin/cgexec" \
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--replace "cgdelete" "${libcgroup}/bin/cgdelete"
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# Patch shebangs before wrapping
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patchShebangs $out/bin
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# Wrap afl-clang-fast(++) with a *different* AFL_PATH, because it
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# has totally different semantics in that case(?) - and also set a
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# proper AFL_CC and AFL_CXX so we don't pick up the wrong one out
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# of $PATH.
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for x in $out/bin/afl-clang-fast $out/bin/afl-clang-fast++; do
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wrapProgram $x \
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--prefix AFL_PATH : "$out/lib/afl" \
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--run 'export AFL_CC=''${AFL_CC:-${clang}/bin/clang} AFL_CXX=''${AFL_CXX:-${clang}/bin/clang++}'
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done
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'';
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passthru = {
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qemu = afl-qemu;
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};
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meta = {
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description = "Powerful fuzzer via genetic algorithms and instrumentation";
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longDescription = ''
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American fuzzy lop is a fuzzer that employs a novel type of
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compile-time instrumentation and genetic algorithms to
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automatically discover clean, interesting test cases that
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trigger new internal states in the targeted binary. This
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substantially improves the functional coverage for the fuzzed
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code. The compact synthesized corpora produced by the tool are
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also useful for seeding other, more labor or resource-intensive
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testing regimes down the road.
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'';
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homepage = "http://lcamtuf.coredump.cx/afl/";
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license = stdenv.lib.licenses.asl20;
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platforms = ["x86_64-linux" "i686-linux"];
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maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
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};
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}
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