Bandit11.md

Bandit11

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

Helpful Reading Material

Rot13 on Wikipedia

1. ssh 로 접속하기

ssh -p 2220 [email protected]

dtR173fZKb0RRsDFSGsg2RWnpNVj3qRr

2. 카이사르

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

a b c d e f g h i j k l m n o p q r s t u v w x y z

rot13이면 a(1) 가 n(14) 이 되는 셈이다.

tr

tr [대상문자] [바꿀문자]

tr 'A-Za-z' 'N-ZA-Mn-za-m' 로

A-Z -> N-Z or A-M

a-z -> n-z or a-m 으로 바꿔준다.

7x16WNeHIi5YkIhWsfFIqoognUTyj9Q4