netzob

Netzob is an open-source tool designed for the reverse engineering, modeling, and fuzzing of communication protocols, including network protocols, structured files, and inter-process communications. Its notable features include protocol modelization, grammar inference for both passive and active traffic analysis, and the ability to generate realistic communication traffic while also supporting fuzz testing for undocumented protocols. Additionally, Netzob can import communication traces from various formats and export protocol models compatible with tools like Wireshark and Scapy.