From f4b975d6ad6f7e55c5c4e290ab85e18957cad0c3 Mon Sep 17 00:00:00 2001 From: vanhauser-thc Date: Wed, 7 Jul 2021 22:22:06 +0200 Subject: update doc --- utils/aflpp_driver/README.md | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'utils') diff --git a/utils/aflpp_driver/README.md b/utils/aflpp_driver/README.md index f03c2fe3..4ca59776 100644 --- a/utils/aflpp_driver/README.md +++ b/utils/aflpp_driver/README.md @@ -22,6 +22,8 @@ or `@@` as command line parameters. ## aflpp_qemu_driver +Note that you can use the driver too for frida_mode (`-O`). + 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: @@ -34,3 +36,8 @@ 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` ``` + +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`. -- cgit 1.4.1