In the youtube link, there is a ssh key.
Using image to text tools online I recreated the id_rsa file.
I’ve uploaded it here.
Next create a hashfile using: 

python ssh2john.py id_rsa > hash

Now I tried cracking with johntheripper. But I got error
“SSH cipher value of 6 is not supported!”
Turns out I needed the absolute latest version of john.
So I followed instructions to build from source and cracked it using rockyou.txt after 15 minutes,
giving ictf{drummerboy}.

image