Bandit Level 5 → Level 6 [5/34]

OverTheWire: Level Goal

 

The password for the next level is stored in a file somewhere under the inhere directory and has all of the following properties:

• human-readable
• 1033 bytes in size
• not executable

 

당연히도 일단 ls -la부터 시작해보자.

bandit5@bandit:~$ ls -la
total 24
drwxr-xr-x  3 root root    4096 Apr 10 14:23 .
drwxr-xr-x 70 root root    4096 Apr 10 14:24 ..
-rw-r--r--  1 root root     220 Mar 31  2024 .bash_logout
-rw-r--r--  1 root root    3771 Mar 31  2024 .bashrc
drwxr-x--- 22 root bandit5 4096 Apr 10 14:23 inhere
-rw-r--r--  1 root root     807 Mar 31  2024 .profile

 

inhere에 들어가 확인해보자.

bandit5@bandit:~$ cd inhere/
bandit5@bandit:~/inhere$ ls -la
total 88
drwxr-x--- 22 root bandit5 4096 Apr 10 14:23 .
drwxr-xr-x  3 root root    4096 Apr 10 14:23 ..
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere00
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere01
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere02
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere03
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere04
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere05
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere06
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere07
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere08
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere09
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere10
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere11
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere12
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere13
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere14
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere15
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere16
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere17
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere18
drwxr-x---  2 root bandit5 4096 Apr 10 14:23 maybehere19

 

 

전단계랑 느낌이 비슷하지만 안에 있는 내용들이 모두 디렉터리여서 모든 디렉터리 내부 파일들을 확인해보았다.

bandit5@bandit:~/inhere$ file maybehere*/*
maybehere00/-file1:       ASCII text, with very long lines (1038)
maybehere00/-file2:       ASCII text, with very long lines (9387)
maybehere00/-file3:       OpenPGP Secret Key
maybehere00/spaces file1: ASCII text, with very long lines (6117)
maybehere00/spaces file2: ASCII text, with very long lines (6849)
maybehere00/spaces file3: data
maybehere01/-file1:       ASCII text, with very long lines (6027)
maybehere01/-file2:       ASCII text
maybehere01/-file3:       data
maybehere01/spaces file1: ASCII text, with very long lines (4138)
maybehere01/spaces file2: ASCII text, with very long lines (4542)
maybehere01/spaces file3: data
...

파일이 매우 많아 어질어질 하다. 파일 조건중에 1033 bytes가 가장 특정하기 좋아보인다.

 

 

man ls에 "size"을 검색해봤다.

-s, --size
	print the allocated size of each file, in blocks

 

 

man ls에 "recrusive"도 검색해봤다.

-R, --recursive
	list subdirectories recursively

 

 

그렇다면 이걸 모두 합쳐서 1033인걸 찾으면 되지 않을까?

bandit5@bandit:~/inhere$ ls -alRs | grep -C 10 1033
 8 -rw-r-----  1 root bandit5 4251 Apr 10 14:23 spaces file2
 8 -rwxr-x---  1 root bandit5 8065 Apr 10 14:23 spaces file3

./maybehere07:
total 56
 4 drwxr-x---  2 root bandit5 4096 Apr 10 14:23 .
 4 drwxr-x--- 22 root bandit5 4096 Apr 10 14:23 ..
 4 -rwxr-x---  1 root bandit5 3663 Apr 10 14:23 -file1
 4 -rwxr-x---  1 root bandit5 3065 Apr 10 14:23 .file1
 4 -rw-r-----  1 root bandit5 2488 Apr 10 14:23 -file2
 4 -rw-r-----  1 root bandit5 1033 Apr 10 14:23 .file2
 4 -rwxr-x---  1 root bandit5 3362 Apr 10 14:23 -file3
 4 -rwxr-x---  1 root bandit5 1997 Apr 10 14:23 .file3
 8 -rwxr-x---  1 root bandit5 4130 Apr 10 14:23 spaces file1
12 -rw-r-----  1 root bandit5 9064 Apr 10 14:23 spaces file2
 4 -rwxr-x---  1 root bandit5 1022 Apr 10 14:23 spaces file3

./maybehere08:
total 56
 4 drwxr-x---  2 root bandit5 4096 Apr 10 14:23 .
 4 drwxr-x--- 22 root bandit5 4096 Apr 10 14:23 ..

 

단 한개의 파일만 특정된다. 파일을 확인해보자.

bandit5@bandit:~/inhere$ cat maybehere07/.file2
[PASSWORD]

 

정답~