Hacks for CF EU can be found here: CrossFire Europe Hacks - MPGH - MultiPlayer Game Hacking
As well, you need an injector. Which can be found in this section: CrossFire Spammers, Injectors and Multi Tools - MPGH - MultiPlayer Game Hacking
Basically download an injector up. Set the process to crossfire.exe
Browse for the hack, it should come in a .dll.
Then when crossfire EU is about to load up, inject.