I wonder if there are some nice tools for "scribbling over hexdump" somewhere, and also rendering pretty output based on that. It tends to be really helpful bot

I wonder if there are some nice tools for "scribbling over hexdump" somewhere, and also rendering pretty output based on that. It tends to be really helpful both when synthesizing/assembling some binary formats, as well as debugging/decoding/disassembling existing ones (and then ideally also writing blogposts based on that). I saw some "annotation" tool like this in one disassembler I tried once, but it wasn't super great, and didn't allow for easy tweaking & moving of annotation groups after doing some changes in the output. I'm pretty sure this is something that's done very often by reverse-engineering people, so I'd assume tools like this should already be popular, just I don't know how to find them? I know there's also some Lua API with support for disassembling many protocols in WireShark, but I don't suppose it's easy to prototype & quickly iterate new formats in it (?) For some really beautiful hand-made annotated binary format hexdump, see e.g.: https://github.com/corkami/pics/blob/master/binary/DalvikEXecutable.pdf https://github.com/corkami/pics/blob/master/binary/DalvikEXe... If someone knows of tools fitting more or less what I described above, I'd be super grateful for some recommendations!!