Hello,
this is a cheat engine that has a mod menu for every COD. Its a little outdated, so you will have to update the offsets, I believe for MW3. Just do a google search for them. So what a cheat engine basically is, would be something you load from your listener. The file will download from your server to the client's rgh/jtag, then delete itself. All you need to do its code it into the listener and your module(stealth) source.
COD Cheat Engine(Click) (Virustotal)
thanks,
-silent

this is a cheat engine that has a mod menu for every COD. Its a little outdated, so you will have to update the offsets, I believe for MW3. Just do a google search for them. So what a cheat engine basically is, would be something you load from your listener. The file will download from your server to the client's rgh/jtag, then delete itself. All you need to do its code it into the listener and your module(stealth) source.

COD Cheat Engine(Click) (Virustotal)
thanks,
-silent