Crack RSA Keys with John The Ripper

For this we're going to be using SSH2John. You can run a find command to find the python script:

Once you have the location, we're going to take the RSA file we have and convert it to a hash that john the ripper can crack:

python /opt/john/ssh2john.py id_rsa.1 > id_rsa.hash

Now we run John and get the password! Easy peasy