byron

Byron is a source code fuzzer designed to support assembly and high-level languages. It starts by generating a set of random programs, which are then iteratively improved by an evolutionary algorithm. Internally, it encodes candidate solutions as typed, directed multigraphs, and can effectively handle complex, realistic structures containing local and global variables, conditional and looping statements, and subroutines.

Programs can be evaluated using a user-defined Python function or an external tool, such as an interpreter or a simulator. Different types of parallelization are supported out of the box, from simple multithreading to the creation of temporary directories where multiple subprocesses are concurrently spawned.

⚠️ Byron is currently in alpha and under active development

Installation

As simple as

pip install --upgrade byron

A few dependencies can enhance Byron functionalities, but are not strictly required. You can get them all with

pip install --upgrade "byron[full]"

Documentation

None yet, but some HOWTO's and examples are available in the development repo.

Contacts

• Giovanni Squillero — [e-mail]
• Alberto Tonda — [e-mail]

License

Copyright (c) 2023-24 Giovanni Squillero and Alberto Tonda
Byron is free and open-source software, and it is distributed under the permissive Apache License 2.0.