I see this member of the forums never has anything helpfull... And i cant see to be directed to a working guide to creating a private gracia server.
So ill share with you this info :
Legal bot never gonna happen
The options you got for a bot are zranger
Its a small montly fee worth it to be honest. Do a google search for zranger and you should find it. Hope it helped out a bit enjoy l2 man. And sorry for the english