ESP hacks are completely impossible for console gaming, seeing as though these games are not run on an interface similar to Windows or OS X, they can not be injected as we do on MPGH.
There is a such thing called packet-editing, which requires some skill and patience. The chances of you learning to do this any time soon and fast are very slim. The most vulnerable to this "hacking" would be the PS3. Microsoft/Game Developers usually monitor information sent to and from your xbox 360.