This project is an introduction to computer security. Snow Crash will make you discover security in various sub-domains, with a developer-oriented approach. You will become familiar with several languages (ASM/perl/php…), develop a certain logic to understand unknown programs, and become aware of problems linked to simple programming errors

• To make this project, you will have to use a VM(64 bits). Once you have started your machine with the ISO provided with this subject, if your configuration is right, you will get a simple prompt with an IP:

💡 If the IP address is not visible, you can get it with the comamnd ifconfig once you're connected

• Then you will be able to register using the following login:password:level100:level100 Use the SSH connection available on port 4242: $>ssh [email protected] -p 4242

• Once registered, you’re gonna have to find the password that will log you in with the "flagXX" account(XX = current level number).

💡 Once logged to the "flagXX" account, launch the getflag command. It will give you the password to connect to the next level (You may not be able to connect to a "flagXX" account - in this case, you will have to find an alternative method, like a command injection on the program depending on its rights, for instance!).

• Here is a session example:

• To help you with some levels, you’re gonna have to use external softwares. You should learn to use the SCP command.

💡 /tmp/ and /var/tmp/ folders have limited rights and will be reset from time to time. You should not work directly on the machine.

• Nothing is left to chance. If there is a problem, start wondering if your code is not the cause.

• Your repo must include anything that helped you solve each validated test

• Your repository will look like this:

  

• You will keep everything you need to prove your results during the evaluation in the resource folder. The flag file may be empty, but you may have to explain why

⚠️ You must be able to clearly and precisely explain anything that is included in the folder. The folder mustn’t include ANY binary.

• If you need to use a specific file that’s included on the project’s ISO, you must download it during the evaluation. You must put it in your repo under no circumstances.
• If you plan to use a specific external software, you must set up a specific environment (VM, docker, Vagrant).
• You’re invited to create scripts that will make you stall, but you will have to explain them during the evaluation.
• For the mandatory part, you must complete the following list of levels:
  • level00
  • level01
  • level02
  • level03
  • level04
  • level05
  • level06
  • level07
  • level08
  • level09

⚠️ You cannot bruteforce the ssh flags.

For the bonus part, you can complete the following list of levels:

• level10
• level11
• level12
• level13
• level14