hacking

OvertheWire – Bandit 24

Recap of Last Lesson: Variable creation, shell scripts and a little on hash functions Bandit Level 24 Objective Find the password to the next level Intel Given

  • A program is running automatically at regular intervals from cron, the time-based job scheduler. Look in /etc/cron.d/ for the configuration and see what command is being executed. NOTE: This level requires you to create your own first shell-script. This is a very big step and you should be proud of yourself when you beat this level! NOTE 2: Keep in mind that your shell script is removed once executed, so you may want to keep a copy around…
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By hellor00t, ago
hacking

OvertheWire – Bandit 23

Recap of Last LessonLearned about cron and reading scripts Bandit Level 23 Objective Find the password to the next level Intel Given

  • A program is running automatically at regular intervals from cron, the time-based job scheduler. Look in /etc/cron.d/ for the configuration and see what command is being executed.
NOTE:Looking at shell scripts written by other people is a very useful skill. The script for this level is intentionally made easy to read. If you are having problems understanding what it does, try executing it to see the debug information it prints. (more…)

By hellor00t, ago
hacking

OvertheWire – Bandit 21

Recap of Last Lesson: Learned about file permissions and running executables. Bandit Level 21 Objective Find the password to the next level Intel Given

  • There is a setuid binary in the home directory that does the following: it makes a connection to localhost on the port you specify as a command line argument. It then reads a line of text from the connection and compares it to the password in the previous level (bandit20).
  • If the password is correct, it will transmit the password for the next level (bandit21).NOTE: To beat this level, you need to login twice: once to run the setuid command, and once to start a network daemon to which the setuid will connect.
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By hellor00t, ago
overthewire

OvertheWire – Bandit 18

Recap of Last LessonUsed Nmap to scan ports and receive an RSA private key. Bandit Level 18 Objective Find the password to the next level Intel Given

  • 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
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By hellor00t, ago
overthewire

OvertheWire – Bandit 17

Recap of Last LessonLearned about ports, telnet, and openssl Bandit Level 17 Objective Find the password to the next level Intel Given

  • The password 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 port that will give the next password, the others will simply send back to you whatever you send to it.
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By hellor00t, ago
overthewire

OvertheWire – Bandit 16

Recap of Last LessonTelnet was used to connect to a remote service and a password for the current level was entered to give us the next levels password. Bandit Level 16 Objective Find the password to the next level Intel Given

  • 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.
  • Helpful note: Getting “HEARTBEATING” and “Read R BLOCK”? Use -quiet and read the “CONNECTED COMMANDS” section in the manpage. Next to ‘R’ and ‘Q’, the ‘B’ command also works in this version of that command…
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By hellor00t, ago