[stpn]

I actually forgot that I did in fact write about this! https://medium.com/@stephencwan/hacking-airplay-into-sonos-9...

A bit light on the technical details perhaps, but I recall getting stuck on getting the right airplay parameters, learning how byte endianness works... happy to try to answer any other questions as best I can remember.

EDIT: Sorry, I realized that I didn't actually answer the other question. I first got interested in reversing from console hacking, specifically this talk about wii hacking: https://youtu.be/0rjaiNIc4W8 (including marcan of asahi linux fame!). Their group also had more writing at: https://fail0verflow.com/blog/. Also interesting to read about mgba emulator development: https://mgba.io/tag/debugging/, v8 internals: https://mrale.ph, react internals: https://overreacted.io/

Consuming a lot of literature on how different systems work helped me develop intuitions around how you might take something apart. Then it's a matter of trying things and banging your head against the wall a lot, e.g. at some point I was interested in how compilers worked so I tried hacking typescript syntax support into babel (circa 2017 maybe) - I got pretty far! and got a lot better sense of how compilers work.