overthewire-bandit

Commands and explanantion

General Help

To know how to use a command: man <command>
Note: The man command also has a manual.
Press 'q' to quit the man command.

If there is no man page, the command might be a "shell built-in".
In that case use the help <X> command. E.g. help cd.

---

Level 0

Command: ssh
Description: ssh (SSH client) is a program for logging into a remote machine and for executing commands on a remote machine.
It is intended to provide secure encrypted communications between two untrusted hosts over an insecure network.
Command used: ssh [email protected] -p 2220 (ssh <username>@<computer name or IP address> -p 0000)

---

Level 0 --> Level 1

0. man - an interface to the system reference manuals
1. ls - list directory contents List information about the FILEs (the current directory by default). Sort entries alphabeti‐cally if none of -cftuvSUX nor --sort is specified.
2. cd Change the shell working directory.
   Change the current directory to DIR. The default DIR is the value of the HOME shell variable.

The variable CDPATH defines the search path for the directory containing DIR. Alternative directory names in CDPATH are separated by a colon (:). A null directory name is the same as the current directory. If DIR begins with a slash (/), then CDPATH is not used.

3. cat - concatenate files and print on the standard output Concatenate FILE(s) to standard output. With no FILE, or when FILE is -, read standard input.

EXAMPLES cat f - g Output f's contents, then standard input, then g's contents.

4. file — determine file type
   file tests each argument in an attempt to classify it. There are three sets of tests, performed in this order: filesystem tests, magic tests, and language tests. The first test that succeeds causes the file type to be printed.

5. du - estimate file space usage Summarize disk usage of the set of FILEs, recursively for directories.

6. find - search for files in a directory hierarchy find searches the directory tree rooted at each given starting-point by evaluating the given expression from left to right, according to the rules of precedence (see section OPERATORS), until the outcome is known (the left hand side is false for and operations, true for or), at which point find moves on to the next file name. If no starting-point is specified, '.' is assumed.

Approach

On using ls command, got to know about the only file 'readme' in the directory. Then checked its type, using file command to be 'ASCII text'
Then used the cat readme command to print the content text, which was the desired password, copied it, to log in to the 'bandit1'
And then exit command to logout from bandit0.

---

Level 1 --> Level 2

Approach

On using the command ls, got to know of a file '-'.
But directly using the file - doesn't work, so we need to use file ./-, which gives the file type as 'ASCII text'.
Then again using cat ./- gives the desired password.

---

Level 2 --> Level 3

Approach

There is a file in named 'spaces in this filename'.
Now, the command, file spaces in this filename didn't work, because of the spaces in the filename. So, use file spaces\ in\ this\ filename, or file "spaces in this filename", or file 'spaces in this filename', which gives the file format as 'ASCII text'.
Then, use the command, cat spaces\ in\ this\ filename, to print the text.

---

Level 3 --> Level 4

Approach

There is a 'inhere' directory, which doesn't show any files in it on using the ls command.
So, in order to see the hidden files, use ls -a instead, which shows the 'hidden' file, again an ASCII text file, which has the password.

---

Level 4 --> Level 5

Approach

In the directory, 'inhere', there are a total of 10 files, of which -file07, on observing using the command file ./-file07, can be observed to be an ASCII text file.
On printing it using cat ./-file07, gives the password for Bandit 5.

---

Level 5 --> Level 6

Commands

find . -size <x>c

Approach

There are quite a large number of directories and then files, in the directory, 'inhere'. So, to find a file of 1033 bytes in size, use the command, find . -size 1033c.
It gives the file name, with the complete path, which contains the required password.
Password: DXjZPULLxYr17uwoI01bNLQbtFemEgo7

---

Level 6 --> Level 7

Command

grep
find / -user <user> -group <group> -type f

Approach

As we know the user and group, where the password has been stored, we enter the command find / -user bandit7 -group bandit6 -type f, which directly gives the complete address of the file.
Password: HKBPTKQnIay4Fw76bEy8PVxKEDQRKTzs