How to make Hack client for any private server?

Hack clients are available for production server,
As for now the production server is down.
So what are the tools needed to create a hack client with aimbot, auto nexus, etc

I am starting from the scratch.
So any help will be appreciated.

Should i start with Mod loader 19.1?

Update _-names to match with the private server client (most likely same for every private server) and update the line numbers (may differ between private server clients)

If private server mod selector becomes widespread, the server owner may add junk code to the client within update so the line numbers may need to be updated again after updates. Also they could change _-names but that takes longer time as they have to change the same _-name everywhere it appears. At least nilly has an automatic _-name changer, but I don't think anyone bothers to make themselves a custom one