The 1st level from Krypton Wargame is simple and easy, we need only to decode a Base64 password to get access to the next level.
Welcome to Krypton! The first level is easy. The following string encodes the password using Base64:
Use this password to log in to krypton.labs.overthewire.org with username krypton1 using SSH. You can the files for other levels in /krypton/
Simple open the Terminal and decode it:
$ echo S1JZUFRPTklTR1JFQVQ= | base64 -d KRYPTONISGREAT
There you have it !