well, it's not gonna be precisely straight forward. not possible to directly log in to an ssh, using ssh, and giving it a password, because no can do jack.

so instead, what it's gonna be is a thing that grabs the go compiler, unzips it, then uses it to build and run a little program that asks for your root password, and automates everything using Go code, including making you a new SSH key so later you can even ssh to your vps and break it.