In Windows, Osiris typically saves config files in Documents/Osiris or a similar folder created upon the first save.

danielkrupinski/Osiris: Cross-platform game hack for ... - GitHub

While Osiris is a "classic" in the scene, using it on official Valve servers carries a high risk of a or Game Ban . Always use a "vac-bypass" or only use it on non-secure servers if you want to protect your account.

You can find the official source code on the Osiris GitHub repository . What are CFGs?