Has there been any ongoing work on this? It's been marked as "WIP" in GitHub for a while now, and I'd imagine it's one of the more complicated things to reverse-engineer.
https://oftc.irclog.whitequark.org/asahi/search?q=ane https://oftc.irclog.whitequark.org/asahi/search?q=neural https://oftc.irclog.whitequark.org/asahi-dev/search?q=ane