[Nasir]

Technically the IN Launcher could see all the dlls loaded in that process... a custom client isn't even needed. And to enforce running the client through the launcher, the launcher could essentially 2-step authenticate with a unique token provided by the server. Then hook the login packet and append the token to that. So much effort hahahaha. Too much effort.

The packet about playing the casting animation was always sent even though the animation itself never was seen and the power words from casting a spell and using .wop were identical

I remember Maka changing it so power word packets were always sent as speech packets. I'd be interested in looking up how/where he did it for science. ...but I think that was a core change and I don't feel like torrenting .NET Reflector to get the code ;[