OverTheWire - Bandit

The password for the next level is stored in the file data.txt, which contains base64 encoded data. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit10 Password: FGUW5ilLVJrxX9kMYMmlN4MgbpfMiqey So, The SSH syntax will be: sshpass -p FGUW5ilLVJrxX9kMYMmlN4MgbpfMiqey ssh [email protected] -p 2220 As we know from the hint, the password for the next level is stored in the file data.txt, which contains base64 encoded data. Base64 is a type of cipher text where the original text is transformed into another form using a specific encoding scheme to hide the original message. ...

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. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit11 Password: dtR173fZKb0RRsDFSGsg2RWnpNVj3qRr So, The SSH syntax will be: sshpass -p dtR173fZKb0RRsDFSGsg2RWnpNVj3qRr ssh [email protected] -p 2220 As we know from the hint, the password for the next level is stored in the file data.txt, which contains ROT13 encoded data. ROT13 is a simple substitution cipher where each letter of the original text is replaced by the letter 13 positions after it in the alphabet. This transformation hides the original message. ...

The password for the next level is stored in the file data.txt, which is a hexdump of a file that has been repeatedly compressed. For this level it may be useful to create a directory under /tmp in which you can work. Use mkdir with a hard to guess directory name. Or better, use the command “mktemp -d”. Then copy the datafile using cp, and rename it using mv (read the manpages!) ...

The password for the next level is stored in /etc/bandit_pass/bandit14 and can only be read by user bandit14. For this level, you don’t get the next password, but you get a private SSH key that can be used to log into the next level. Note: localhost is a hostname that refers to the machine you are working on. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit13 Password: FO5dwFsc0cbaIiH0h8J2eUks2vdTDwAn So, The SSH syntax will be: sshpass -p FO5dwFsc0cbaIiH0h8J2eUks2vdTDwAn ssh [email protected] -p 2220 The password for the next level is stored in /etc/bandit_pass/bandit14 and can only be read by the user bandit14. For this level, we don’t get the next password, we get a private SSH key that can be used to log into the next level. So, Let’s copy that private SSH key to our box, and login using private ssh in the next level account. ...

The password for the next level can be retrieved by submitting the password of the current level to port 30000 on localhost. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit14 private SSH key file: sshkey.private So, The SSH syntax will be: ssh -i sshkey.private [email protected] -p 2220 From the previous bandit13 level challenges, we know that bandit14 has access to the file /etc/bandit_pass/bandit14. We need to read this file to obtain the bandit14 password, which is necessary for completing the next step. ...

The password for the next level can be retrieved by submitting the password of the current level to port 30001 on localhost using SSL encryption. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit15 Password: 8xCjnmgoKbGLhHFAZlGE5Tmu4M2tKJQo So, The SSH syntax will be: sshpass -p 8xCjnmgoKbGLhHFAZlGE5Tmu4M2tKJQo ssh [email protected] -p 2220 The challenge is to submit the bandit15 password to port 30001 on localhost using SSL encryption. We can do this using either ncat with SSL support or directly using openssl. ...

The credentials for the next level can be retrieved by submitting the password of the current level to a port on localhost in the range 31000 to 32000. First find out which of these ports have a server listening on them. Then find out which of those speak SSL and which don’t. There is only 1 server that will give the next credentials, the others will simply send back to you whatever you send to it. ...

There are 2 files in the homedirectory: passwords.old and passwords.new. The password for the next level is in passwords.new and is the only line that has been changed between passwords.old and passwords.new NOTE: if you have solved this level and see ‘Byebye!’ when trying to log into bandit18, this is related to the next level, bandit19 Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit17 Password: EReVavePLFHtFlFsjn3hyzMlvSuSAcRD So, The SSH syntax will be: sshpass -p EReVavePLFHtFlFsjn3hyzMlvSuSAcRD ssh [email protected] -p 2220 We know there are two files in the home directory: passwords.old and passwords.new. The password we need is located in passwords.new, and it’s the only line that has changed between these two files. We can easily retrieve it using the diff command. ...

The password for the next level is stored in a file readme in the homedirectory. Unfortunately, someone has modified .bashrc to log you out when you log in with SSH. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit18 Password: x2gLTTjFwMOhQ8oWNbMN362QKxfRqGlO So, The SSH syntax will be: sshpass -p x2gLTTjFwMOhQ8oWNbMN362QKxfRqGlO ssh [email protected] -p 2220 OOPS! Someone has modified the .bashrc file to log out immediately upon login, displaying a “Byebye!” message. This makes it challenging to log in and interact with the system normally. However, SSH provides functionalities that allow us to execute commands without triggering the .bashrc configuration file, which is a script that runs automatically if the user’s default shell is bash or when the user switches to bash from another shell. ...

To gain access to the next level, you should use the setuid binary in the homedirectory. Execute it without arguments to find out how to use it. The password for this level can be found in the usual place (/etc/bandit_pass), after you have used the setuid binary. Here are the details which we have from the previous level: Host: bandit.labs.overthewire.org Port: 2220 Username: bandit19 Password: cGWpMaKXVwDUNgPAVJbWYuGHVn9zl3j8 So, The SSH syntax will be: sshpass -p cGWpMaKXVwDUNgPAVJbWYuGHVn9zl3j8 ssh [email protected] -p 2220 We are dealing with a SUID binary. SUID or setuid, is a special type of permission in Unix-like operating systems that allows users to execute a file with the permissions of the file’s owner rather than their own permissions. This special permission bit (s in the permission string) can be set on executable files using the chmod command. ...