You can try https://github.com/google/honggfuzz - The basic idea is pretty much the same as with afl-fuzz - maximization of code coverage (more or less).
You can attach to a process (-p pid) and then feed it with an external, initial input (from pcap, or hand-crafted). Honggfuzz will modify it to maximize code coverage in the network server. I got pretty decent results with e.g. apache (in must be executed with -X, so it doesn't fork/daemonize).
Comments
You can try https://github.com/google/honggfuzz - The basic idea is pretty much the same as with afl-fuzz - maximization of code coverage (more or less).
Some old write-up on the technique can be found here: https://github.com/google/honggfuzz/blob/wiki/AttachingToPid....
You can attach to a process (-p pid) and then feed it with an external, initial input (from pcap, or hand-crafted). Honggfuzz will modify it to maximize code coverage in the network server. I got pretty decent results with e.g. apache (in must be executed with -X, so it doesn't fork/daemonize).