Hi, bit of a noob and only just started taking PPC seriously, so sorry in advance if my information is incorrect or I say dumb stuff

I've set myself a project to try and load custom payloads via calling XeKeysExecute. However, the payload would fail because it's unofficial. So from my understanding, NOPing the handler that deals with the RSA check will work.
So far I've got a non-live HV loaded in IDA with half the functions labeled, XeKeysExecute being one of them. I know the handler is a small function and I think it returns 0 to r3 if RSA fails. Basically, I'm asking for a bit of help locating the function. Any help or tips would be great!
Please correct me if I'm wrong on anything, which I properly am lol.
Thanks!
