This is my first hackthebox 
I got a reverse shell and have given myself admin in the G***b and found the privkey , but I’m getting
Load key "***": invalid format despite file saying it’s OpenSSH private key
Is the privkey a red herring or am I doing something wrong with it? Just looking for a small hint.
EDIT: hmm well I managed to get it to work… but I have no idea why the step that I did was needed