DeLuks2006 / patimat

What is patimat?

Patimat is a header-only C++ library that does two things: find byte patterns in binary data, and replace them. Think of it as a binary search-and-replace tool with a readable DSL. The pattern syntax handles wildcards, nibble-level matching, and numeric ranges like "f0 ?? 4? (10-20) ?a". Beyond the library, there's a CLI tool that patches executables directly from the command line, with automatic support for PE, ELF, Mach-O, and flat binary formats. You can pass a JSON config file or just pipe hex patterns straight from the shell.

Why is it gaining traction?

This solves a real pain point for anyone working with binaries: finding and modifying code without rebuilding from source. The pattern language is expressive enough for real reverse engineering work but simple enough to use in a one-liner. Since it's header-only, you drop it into any C++ project without fighting build systems. The binary format handling removes the tedium of parsing executable headers yourself, which is why it appeals to security researchers and developers who need surgical binary edits.

Who should use this?

Security researchers reverse-engineering malware. CTF players hunting for function signatures. Game modders patching memory or binaries. Developers debugging binary protocols who need quick-and-dirty transformations without IDA scripts or Python wrappers. If you're already comfortable with hex editors and want programmatic control, this fits.

Verdict

The credibility score is 0.6999%, the star count is low, and there's no visible test suite or documentation beyond a README with two examples. It's a useful concept executed by someone working alone, but it lacks the polish that signals long-term maintenance. Use it for a specific task, understand it will need debugging, and keep an eye on whether the author responds to issues. For production tooling, wait for more community signal. For experimentation and learning, it works fine as-is.