qduarte-42/snow-crashIntroduction to cybersecurity.
This project is an introduction to computer security. Snow Crash will help you discover security in various sub-domains, with a developer-oriented approach. You will become familiar with several languages (ASM, Perl, Php, etc.), develop a certain logic to understand unknown programs, and become aware of problems related to simple programming errors.
Snow Crash is the first project of the cybersecurity branch of 42 school. It serves as an introduction to some well-known system vulnerabilities, and mostly focuses on the Linux operating system, forcing us to learn more about it and understand how it can be potentially exploited.
The main topics we have studied include:
We validated this project in February 2025, for a score of 125/100.
In order to start this project, you have to first download and install the provided ISO by 42.
Then you need to use a virtual machine with the ISO. If using VirtualBox, you must set the Attached to setting in the Network tab to Host-only Adapter.
You can connect to the first level using ssh. The IP address is displayed on the home screen of the VM and the port is 4242. The credentials for the first level are level00 for both username and password.
ssh [email protected] -p 4242
Once you have found the password for the next level, switch to the corresponding flag user and run the getflag command in order to obtain the password required to log in as the next level user.
level00@SnowCrash:~$ su flag00
Password:
Don't forget to launch getflag!
flag00@SnowCrash:~$ getflag
Check flag.Here is your token: ?????????????????
flag00@SnowCrash:~$ su level01
Password:
level01@SnowCrash:~$ _
Logging in as a flag user is not always required, sometimes you may find another solution in order to directly obtain the next level password.