diff options
Diffstat (limited to 'utils/aflpp_driver')
| -rw-r--r-- | utils/aflpp_driver/README.md | 12 | ||||
| -rw-r--r-- | utils/aflpp_driver/aflpp_qemu_driver.c | 2 |
2 files changed, 7 insertions, 7 deletions
diff --git a/utils/aflpp_driver/README.md b/utils/aflpp_driver/README.md index 30e2412f..4560be2b 100644 --- a/utils/aflpp_driver/README.md +++ b/utils/aflpp_driver/README.md @@ -7,15 +7,15 @@ targets. Just do `afl-clang-fast++ -o fuzz fuzzer_harness.cc libAFLDriver.a [plus required linking]`. -You can also sneakily do this little trick: +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. +To use shared-memory test cases, you need nothing to do. +To use stdin test cases, give `-` as the only command line parameter. +To use file input test cases, 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. @@ -30,8 +30,8 @@ are to be fuzzed in qemu_mode. So we compile them with clang/clang++, without `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` @@ -40,4 +40,4 @@ AFL_QEMU_PERSISTENT_HOOK=/path/to/aflpp_qemu_driver_hook.so afl-fuzz -Q ... -- . if you use afl-cmin or `afl-showmap -C` with the aflpp_qemu_driver you need to set the set same AFL_QEMU_... (or AFL_FRIDA_...) environment variables. If you want to use afl-showmap (without -C) or afl-cmin.bash then you may not -set these environment variables and rather set `AFL_QEMU_DRIVER_NO_HOOK=1`. +set these environment variables and rather set `AFL_QEMU_DRIVER_NO_HOOK=1`. \ No newline at end of file diff --git a/utils/aflpp_driver/aflpp_qemu_driver.c b/utils/aflpp_driver/aflpp_qemu_driver.c index 99a4c9a8..e47df1e6 100644 --- a/utils/aflpp_driver/aflpp_qemu_driver.c +++ b/utils/aflpp_driver/aflpp_qemu_driver.c @@ -22,7 +22,7 @@ int main(int argc, char **argv) { if (LLVMFuzzerInitialize) LLVMFuzzerInitialize(&argc, &argv); // Do any other expensive one-time initialization here. - if (getenv("AFL_QEMU_DRIVER_NO_HOOK")) { + if (getenv("AFL_QEMU_DRIVER_NO_HOOK") || getenv("AFL_FRIDA_DRIVER_NO_HOOK")) { afl_qemu_driver_stdin_input(); |