OverTheWire Wargames

Bandit Level 11 –> Level 12

Level Goal

The password for the next level is stored in the file data.txt, where all lowercase (a-z) and uppercase (A-Z) letters have been rotated by 13 positions

Commands you may need to solve this level

grep, sort, uniq, strings, base64, tr, tar, gzip, bzip2, xxd

Solution

ls command show file in home directory “data.txt”

bandit11@bandit:~$ ls
data.txt

Let’s see it

bandit10@bandit:~$ cat data.txt
VGhlIHBhc3N3b3JkIGlzIElGdWt3S0dzRlc4TU9xM0lSRnFyeEUxaHhUTkViVVBSCg==

all character have rotated 13 position, tr command return real char

bandit11@bandit:~$ cat data.txt | tr 'A-Za-z' 'N-ZA-Mn-za-m'
The password is 5Te8Y4drgCRfCx8ugdwuEX8KFC6k2EUu

Password

5Te8Y4drgCRfCx8ugdwuEX8KFC6k2EUu