Add custom mutators, state aware fuzzing and differential fuzzing?

[personnumber3377]

Hi!

I was wondering that maybe this project could benefit from custom mutators which may be grammar aware or maybe there could be a mutator which repeats strings to find vulnerabilities such as CVE-2023-38039 which need repeated strings in order to exploit the vulnerability. Normal mutators have a hard time repeating the same pattern thousands of times. I have programmed one myself here in C code: https://github.com/personnumber3377/dos_finder_c/blob/main/mutator.c I wrote it using ChatGPT, so it still needs a bit of polishing. There could also be differential fuzzing in-place for different http clients. This could catch bugs which are logic bugs as opposed to memory corruption such as CVE-2023-38546 for example.

I can try to implement such changes myself if you lack the time.

Thanks in advance!