Day 11

warmup/typo

This challenge allows us to connect to a remote host in SSH. When connecting, the only thing we see is a train going through our terminal from right to left. When it’s gone, the connection closes by itself.

This train is the famous sl command.
The goal of this command is to be run when you mistype the ls one. It stands for Steam Locomotive, so this train makes you loose time to learn not to do it again.

If we can’t do anything when connected except this, we need to find a way to run a command before the connection being established.

For this, the SSH command can take a last argument for a command to run and then leave:

$ ssh -p 32100 [email protected] "ls"
flag.txt

Alright, we just have to read the file then:

$ ssh -p 32100 [email protected] "cat flag.txt"
flag{REDACTED}

That’s it!

rev/gocrackme3

TODO