Luigi Auriemma

Hey Luigi, I've been browsing your website for awhile and I've been impressed with everything I've seen. I was wondering if you had any knowledge about running a game without game guard (I saw you had posted a Game Guard file de-encrypter awhile ago) without the server realizing what has happened (Games like ijji Gunz, Nexon's MapleStory, etc..). I've been working on this project myself and I've successfully got the game running without game guard and eliminated the client checks, however, after a couple minutes the servers recognize that I'm running the game without game guard alongside it and shuts down. I'm aware this is not an easy task (a time consuming one for sure) but I'd really appreciate it if you could spend even a little time fiddling around with the idea and seeing if you have any "brilliant" brain waves. I understand if you're too busy and thanks in advance.
-MadHatter

Except for the decrypter I did no additional work on GameGuard.
Anyway the disconnection can happens for a ping which is not replied by you or by additional data not sent by your client after having joined the server.

If you sniff the packets you should find something like non game packets and/or packets sent by an authorization server or similar.

But since I didn't go in deep with GG I don't know more.
For example the client could use a private/public key encryption algorithm that you can't emulate if you don't know the private key (naturally mine is only an idea since I don't know what happens in reality).