There is a game server (Windows based), the game itself can be started with exes, they communicate with each other on inside and outside ports, so that players can connect to the game.
There is a software called Agent [url removed, login to view] in the game, which can be exploited by its vulnerability, meaning, a message can be sent to the agent server's port so that software is closed, therefore the whole game just shuts down immediately. Unfortunately, the port must be open so the players can still play.
So we want to find someone, who will find this problem in the software and modify it, therefore it won't be vulnerable to anyone and they can't influence the game in any way. Mainly debugging and modifying.