Comment by a_e_k

I became a fan of Kaitai Struct [0] when doing some amateur sleuthing last year. It has a web-based IDE [1] for writing and testing structure definitions against hex dumps, and can generate binary parsers in Python (and many other languages) right from the Web IDE.

[0] https://doc.kaitai.io/user_guide.html

[1] https://ide.kaitai.io/devel/