Help with backdooring

Hello I was wondering if anyone has any tutorials on how I back door a gmod server so that I can take control and get super admin and stuff. I already have odium back door.lua but it only works on servers that are backdoored. I do not want to search through hundreds of servers just to find one that works I'd rather just do it myself on a small server - Thank you :)

You cannot just create a backdoor. You would have to have some form of plugin that contains a backdoor and for the owners of the server not to notice. You could do this as a targeted attack on small servers, as they are the only ones who would install such addon/plugin. Of course you would need to understand lua.