Rename the WP-ADMIN folder

Hi, I searched on the net and on ww.wp.xz.cn to find a way, a tip or an extension to rename the WP-ADMIN folder, I have not found anything to date, I do not know if someone has already fact, or if someone knows an extension that makes it safely.

I thought to modify all the files overwriting WP-ADMIN by the name of my choice, for it must edit environs 300 files.