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unplugged-system/external/AFLplusplus/utils/defork
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ziv-gabel 06ee9615ad Initial commit: AOSP 14 with modifications for Unplugged OS
2025-10-06 13:59:42 +00:00
..
defork.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
forking_target.c Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
Makefile Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00
README.md Initial commit: AOSP 14 with modifications for Unplugged OS 2025-10-06 13:59:42 +00:00

README.md

defork

when the target forks, this breaks all normal fuzzing runs. Sometimes, though, it is enough to just run the child process. If this is the case, then this LD_PRELOAD library will always return 0 on fork, the target will belive it is running as the child, post-fork.

This is defork.c from the amazing preeny project https://github.com/zardus/preeny

It is altered for AFL++ to work with its fork-server: the initial fork will go through, the second fork will be blocked.