I recall using a HexEditor on the old RealOTS Client, with the binary values being put up by the owner himself, Dennis, and then used TibiaAuto 1.9.7(?), not sure on the version, along with the code for a version earlier than that, I believe 1.9.4, allowing me to bot. There was a version of TibiaBotNG for RealOTS around on the web aswell, but that was taken down. Most people who botted were banned, because TA was the only bot that worked, and chat logs showed the %ta.

You'd need to find out the IP used to connect to the server and HexEdit a custom 7.7 client, since it runs on 7.7 and not 7.72, so as to be able to use a bot. The only one available, though, as stated, is TibiaAuto, resulting in near-instantaneous bans unless you only use e.g anti-afk. Even if you succeeded in editing a custom client, it would show up on the client-side, resulting in banishment and deletion.

TL;DR: You can't bot on RealOTS. Your best bet for features like mana training, anti-afk, runemaking etc. is to run auto-click or a tasker, like KeyText, with a script for doing specific tasks every X seconds/minutes.