overthewire.org krypton level1-2 writeup

I am Nguyễn Phương Nam. I comeback!!!

Level 0

Level Info:

Welcome to Krypton! The first level is easy. The following string encodes the password using Base64:

S1JZUFRPTklTR1JFQVQ=

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/

Decode this in base64

I use: http://www.base64decode.org/ to decode

Finally, I give flag: KRYPTONISGREAT

I use this flag to login krypton.labs.overthewire.org with user: krypton1

 

Level 0 → Level 1

Level Info:

 The password for level 2 is in the file ‘krypton2‘. It is ‘encrypted’ using a simple rotation. It is also in non-standard ciphertext format. When using alpha characters for cipher text it is normal to group the letters into 5 letter clusters, regardless of word boundaries. This helps obfuscate any patterns. This file has kept the plain text word boundaries and carried them to the cipher text. Enjoy!

krypton1@melinda:/krypton/krypton1$ cat krypton2
YRIRY GJB CNFFJBEQ EBGGRA

This is rot13 encryption. 

I use this site to decrypt: http://decode.org/?q=YRIRY+GJB+CNFFJBEQ+EBGGRA

LEVEL TWO PASSWORD ROTTEN

I use ROTTEN to login krypton2