216 lines
7 KiB
Nix
216 lines
7 KiB
Nix
{
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lib,
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stdenv,
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stdenvNoCC,
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fetchFromGitHub,
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callPackage,
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makeWrapper,
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clang,
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llvm,
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gcc,
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which,
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libcgroup,
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python3,
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perl,
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gmp,
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file,
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wine ? null,
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cmocka,
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llvmPackages,
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}:
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# wine fuzzing is only known to work for win32 binaries, and using a mixture of
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# 32 and 64-bit libraries ... complicates things, so it's recommended to build
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# a full 32bit version of this package if you want to do wine fuzzing
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assert (wine != null) -> (stdenv.targetPlatform.system == "i686-linux");
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let
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aflplusplus-qemu = callPackage ./qemu.nix { };
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qemu-exe-name =
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if stdenv.targetPlatform.system == "x86_64-linux" then
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"qemu-x86_64"
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else if stdenv.targetPlatform.system == "i686-linux" then
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"qemu-i386"
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else
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throw "aflplusplus: no support for ${stdenv.targetPlatform.system}!";
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libdislocator = callPackage ./libdislocator.nix { inherit aflplusplus; };
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libtokencap = callPackage ./libtokencap.nix { inherit aflplusplus; };
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aflplusplus = stdenvNoCC.mkDerivation rec {
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pname = "aflplusplus";
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version = "4.21c";
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src = fetchFromGitHub {
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owner = "AFLplusplus";
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repo = "AFLplusplus";
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rev = "refs/tags/v${version}";
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hash = "sha256-DKwPRxSO+JEJYWLldnfrAYqzwqukNzrbo4R5FzJqzzg=";
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};
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enableParallelBuilding = true;
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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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nativeBuildInputs = [
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makeWrapper
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which
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clang
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gcc
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];
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buildInputs = [
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llvm
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python3
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gmp
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llvmPackages.bintools
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] ++ lib.optional (wine != null) python3.pkgs.wrapPython;
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# Flag is already set by package and causes some compiler warnings.
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# warning: "_FORTIFY_SOURCE" redefined
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hardeningDisable = [ "fortify" ];
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postPatch = ''
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# Don't care about this.
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rm Android.bp
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# Replace the CLANG_BIN variables with the correct path.
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# Replace "gcc" and friends with full paths in afl-gcc.
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# Prevents afl-gcc picking up any (possibly incorrect) gcc from the path.
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# Replace LLVM_BINDIR with a non-existing path to give a hard error when it's used.
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substituteInPlace src/afl-cc.c \
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--replace-fail "CLANGPP_BIN" '"${clang}/bin/clang++"' \
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--replace-fail "CLANG_BIN" '"${clang}/bin/clang"' \
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--replace-fail '"gcc"' '"${gcc}/bin/gcc"' \
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--replace-fail '"g++"' '"${gcc}/bin/g++"' \
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--replace-fail 'getenv("AFL_PATH")' "(getenv(\"AFL_PATH\") ? getenv(\"AFL_PATH\") : \"$out/lib/afl\")"
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substituteInPlace src/afl-ld-lto.c \
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--replace-fail 'LLVM_BINDIR' '"/nixpkgs-patched-does-not-exist"'
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# Remove the rest of the line
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sed -i 's|LLVM_BINDIR = .*|LLVM_BINDIR = |' utils/aflpp_driver/GNUmakefile
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substituteInPlace utils/aflpp_driver/GNUmakefile \
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--replace-fail 'LLVM_BINDIR = ' 'LLVM_BINDIR = ${clang}/bin/'
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substituteInPlace GNUmakefile.llvm \
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--replace-fail "\$(LLVM_BINDIR)/clang" "${clang}/bin/clang"
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'';
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env.NIX_CFLAGS_COMPILE = toString [
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# Needed with GCC 12
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"-Wno-error=use-after-free"
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];
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makeFlags = [
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"PREFIX=${placeholder "out"}"
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"USE_BINDIR=0"
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];
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buildPhase = ''
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runHook preBuild
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common="$makeFlags -j$NIX_BUILD_CORES"
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make distrib $common
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make -C qemu_mode/libcompcov $common
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make -C qemu_mode/unsigaction $common
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runHook postBuild
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'';
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postInstall =
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''
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# remove afl-clang(++) which are just symlinks to afl-clang-fast
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rm $out/bin/afl-clang $out/bin/afl-clang++
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# the makefile neglects to install unsigaction
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cp qemu_mode/unsigaction/unsigaction*.so $out/lib/afl/
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# Install the custom QEMU emulator for binary blob fuzzing.
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ln -s ${aflplusplus-qemu}/bin/${qemu-exe-name} $out/bin/afl-qemu-trace
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# give user a convenient way of accessing libcompconv.so, libdislocator.so, libtokencap.so
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cat > $out/bin/get-afl-qemu-libcompcov-so <<END
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#!${stdenv.shell}
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echo $out/lib/afl/libcompcov.so
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END
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chmod +x $out/bin/get-afl-qemu-libcompcov-so
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ln -s ${libdislocator}/bin/get-libdislocator-so $out/bin/
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ln -s ${libtokencap}/bin/get-libtokencap-so $out/bin/
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# Install the cgroups wrapper for asan-based fuzzing.
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cp utils/asan_cgroups/limit_memory.sh $out/bin/afl-cgroup
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chmod +x $out/bin/afl-cgroup
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substituteInPlace $out/bin/afl-cgroup \
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--replace-fail "cgcreate" "${libcgroup}/bin/cgcreate" \
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--replace-fail "cgexec" "${libcgroup}/bin/cgexec" \
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--replace-fail "cgdelete" "${libcgroup}/bin/cgdelete"
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patchShebangs $out/bin
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''
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+ lib.optionalString (wine != null) ''
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substitute afl-wine-trace $out/bin/afl-wine-trace \
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--replace-fail "qemu_mode/unsigaction" "$out/lib/afl"
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chmod +x $out/bin/afl-wine-trace
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# qemu needs to be fed ELFs, not wrapper scripts, so we have to cheat a bit if we
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# detect a wrapped wine
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for winePath in ${wine}/bin/.wine ${wine}/bin/wine; do
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if [ -x $winePath ]; then break; fi
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done
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makeWrapperArgs="--set-default 'AFL_WINE_PATH' '$winePath'" \
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wrapPythonProgramsIn $out/bin ${python3.pkgs.pefile}
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'';
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nativeInstallCheckInputs = [
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perl
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file
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cmocka
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];
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doInstallCheck = true;
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installCheckPhase = ''
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runHook preInstallCheck
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# replace references to tools in build directory with references to installed locations
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substituteInPlace test/test-qemu-mode.sh \
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--replace-fail '../libcompcov.so' '`$out/bin/get-afl-qemu-libcompcov-so`' \
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--replace-fail '../afl-qemu-trace' '$out/bin/afl-qemu-trace' \
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--replace-fail '../afl-fuzz' '$out/bin/afl-fuzz' \
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--replace-fail '../qemu_mode/unsigaction/unsigaction32.so' '$out/lib/afl/unsigaction32.so' \
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--replace-fail '../qemu_mode/unsigaction/unsigaction64.so' '$out/lib/afl/unsigaction64.so'
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substituteInPlace test/test-libextensions.sh \
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--replace-fail '../libdislocator.so' '`$out/bin/get-libdislocator-so`' \
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--replace-fail '../libtokencap.so' '`$out/bin/get-libtokencap-so`'
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substituteInPlace test/test-llvm.sh \
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--replace-fail '../afl-cmin.bash' '`$out/bin/afl-cmin.bash`'
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# perl -pi -e 's|(?<!\.)(?<!-I)(\.\./)([^\s\/]+?)(?<!\.c)(?<!\.s?o)(?=\s)|\$out/bin/\2|g' test/test.sh
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patchShebangs .
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cd test && ./test-all.sh
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runHook postInstallCheck
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'';
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passthru = {
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inherit libdislocator libtokencap;
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qemu = aflplusplus-qemu;
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};
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meta = {
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description = ''
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Heavily enhanced version of AFL, incorporating many features
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and improvements from the community
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'';
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homepage = "https://aflplus.plus";
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changelog = "https://aflplus.plus/docs/changelog";
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license = lib.licenses.asl20;
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platforms = [
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"x86_64-linux"
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"i686-linux"
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];
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maintainers = with lib.maintainers; [
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ris
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mindavi
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];
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};
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};
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in
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aflplusplus
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