It's just used to circumvent or "hide" certain things that you would normally get banned for, but that's not a definite promise because downloading any EBOOT and using it without knowing what features it is using could be potentially dangerous.
i.e. not knowing what is in the EBOOT before you use it could be result of ban, so you should always check EBOOTS or make your own
DEX EBOOTS should always be used with DEX SPRX menus and only if your PS3 is on DEX.
CEX EBOOTS are for CEX SPRX and you should never use a DEX EBOOT if your console is CEX ONLY
Sometimes the EBOOT itself can be the mod menu but I only have 1 debug EBOOT like that.
Either-or, EBOOTS do not protect you from bans in one simple form but various different ways and understanding how to avoid bans can be slightly or entirely different for every separate game. Much of the COD series is probably the same in terms of all the different cheats or "infections" that they have such as aimbot, laser, wallhack, super physics (Plus these are the most traded/known mods around.)
^(and most of this can be abused from a USB on an unmodified console anyways without ever getting banned), at least for the older CODs: MW1, MW2 MW3, BO1 and then there are Theater mode exploits for unmodified consoles on BO1 & BO2 that I know of
But anyways, you could probably make a decent CEX EBOOT that could protect you in Zombies but multiplayer is more likely to result in a ban. That random "someone" is less likely to report you in Zombies than in multiplayer, but honestly it could still happen and nothing can protect you from a game server getting you hard-banned by SONY besides having your CID completely faked from all viewpoints plus using a VPN to circumvent your true IP from being server-banned by Treyarch, Rockstar or whoever if they can't manage to get you CID-banned
HxE HEX Editor is your best friend.
