As I trawl through the source code, I'm finding evidence for packets that are undocumented on the wiiki. As such, I feel we should note them down here, so people can be on the look it out for them.
So far I've found:
\newuser\ - seems to be an alternate to \login\, sent to server 242. Has fields: \email\, \nick\, \passwordenc\, \productid\, \gamename\, \uniquenick\, \cdkeyenc\, \partnerid\, \id\1, \final\
\nur\ - received from server 242. Has fields: \userid\, \profileid\
So far I've found:
\newuser\ - seems to be an alternate to \login\, sent to server 242. Has fields: \email\, \nick\, \passwordenc\, \productid\, \gamename\, \uniquenick\, \cdkeyenc\, \partnerid\, \id\1, \final\
\nur\ - received from server 242. Has fields: \userid\, \profileid\