fq

Tool, language, and decoders for working with binary data. fq is inspired by the well-known jq tool and language and allows you to work with binary formats the same way you would using jq. In addition, it can also present data similar to a hex viewer, transform, slice, and concatenate binary data, supports nested formats, and has an interactive REPL with auto-completion. It was originally designed to query, inspect and debug codecs and metadata in media files and containers like mp4, FLAC, mp3, and jpeg. But has since been extended to support a variety of formats like executables, and packet captures including TCP reassembly and serialization formats like ASN1 BER, Avro, CBOR, protobuf, and a lot more. In summary, it aims to be something like jq, hexdump, dd and gdb combined into one. fq is still early in development so things might change, be broken, or do not make sense. That also means that there is a great opportunity to help out!