What is it? @.@

Here is the place where I record some tactics about wargame, systems, and other security issues.

2014-01-23

OverTheWire - Bandit - Level 10 to Level 11

Description:

Level Goal
The password for the next level is stored in the file data.txt, which contains base64 encoded data
Commands you may need to solve this level
grep, sort, uniq, strings, base64, tr, tar, gzip, bzip2, xxd
Helpful Reading Material
Base64 on Wikipedia
Solution:
  1. [Comment] Using SSH to connect the server
  2. sp@simple-plan:~|=> ssh bandit10@bandit.labs.overthewire.org
    ...
    bandit10@bandit.labs.overthewire.org's password: truKLdjsbJ5g7yyJ2X2R0o3a5HQJFuLk
  3. [Comment] Using ls command to list directory contents
  4. bandit10@melinda:~$ ls
    data.txt
  5. [Comment] Using cat command to output file's contents
  6. bandit10@melinda:~$ cat data.txt
    VGhlIHBhc3N3b3JkIGlzIElGdWt3S0dzRlc4TU9xM0lSRnFyeEUxaHhUTkViVVBSCg==
  7. [Comment] Using base64 command with --decode option to decode the cipherytext
  8. bandit10@melinda:~$ base64 --decode data.txt
    The password is IFukwKGsFW8MOq3IRFqrxE1hxTNEbUPR
  9. [Comment] Using exit command to disconnect connection to server
  10. bandit10@melinda:~$ exit
    logout
    Connection to bandit.labs.overthewire.org closed.
  11. [Comment] It's done! Saving the password for next level.
Reference:
sshhttp://linuxcommand.org/man_pages/ssh1.html
lshttp://linuxcommand.org/man_pages/ls1.html
cathttp://linuxcommand.org/man_pages/cat1.html
exithttp://linuxcommand.org/man_pages/exit1.html
cdhttp://linuxcommand.org/lc3_man_pages/cdh.html
findhttp://linuxcommand.org/man_pages/find1.html
grephttp://linuxcommand.org/lc3_man_pages/grep1.html
sorthttp://linuxcommand.org/lc3_man_pages/sort1.html
uniqhttp://linuxcommand.org/man_pages/uniq1.html
stringshttp://linuxcommand.org/man_pages/strings1.html
base64http://linux.die.net/man/1/base64

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