It's easy as fuck, lol.
However, if you're too lazy to do anything - I'll give you the whole nine yards for what I use to fuck servers up with.
General basic shit, but it bypasses CAC, and every other anti-cheat on Garry's Mod, that also includes an anti-screenshot bypass.
It's common knowledge for most of it, CAC bypass took me a little to get - did tweaks on it and made it work, been using it for 5-6 months now.
I'll include the steps on how to use it, the injector I use - both of the bypasses.
Shoot me a PM, ( this goes for anyone )