Back to Aflplusplus

defork

utils/defork/README.md

4.40c480 B
Original Source

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 believe 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.