afl++ drivers
aflpp_driver
aflpp_driver is used to compile directly libfuzzer LLVMFuzzerTestOneInput()
targets.
Just do afl-clang-fast++ -o fuzz fuzzer_harness.cc libAFLDriver.a [plus required linking].
You can also sneakily do this little trick:
If this is the clang compile command to build for libfuzzer:
clang++ -o fuzz -fsanitize=fuzzer fuzzer_harness.cc -lfoo
then just switch clang++ with afl-clang-fast++ and our compiler will
magically insert libAFLDriver.a :)
To use shared-memory testcases, you need nothing to do.
To use stdin testcases give - as the only command line parameter.
To use file input testcases give @@ as the only command line parameter.
IMPORTANT: if you use afl-cmin or afl-cmin.bash then either pass -
or @@ as command line parameters.
aflpp_qemu_driver
aflpp_qemu_driver is used for libfuzzer LLVMFuzzerTestOneInput() targets that
are to be fuzzed in qemu_mode. So we compile them with clang/clang++, without
-fsantize=fuzzer or afl-clang-fast, and link in libAFLQemuDriver.a:
clang++ -o fuzz fuzzer_harness.cc libAFLQemuDriver.a [plus required linking].
Then just do (where the name of the binary is fuzz):
AFL_QEMU_PERSISTENT_ADDR=0x$(nm fuzz | grep "T LLVMFuzzerTestOneInput" | awk '{print $1}')
AFL_QEMU_PERSISTENT_HOOK=/path/to/aflpp_qemu_driver_hook.so afl-fuzz -Q ... -- ./fuzz`