buffer overflow

anyone have an idea of where to start with a buffer overflow attack on a game server?
ports open:
22 (SSH)
3306 (mysql)
80 (http)
8123
25565 (client connects to)
25568 (probably related to 25565, not sure)
id like to preform it on port 25565 or 3306, but 3306 will not connect me because my ip is restricted. I want to know what to look for and how to find the exploit?

Again wrong section. Do you learn?

*cough* General Hacking *cough*