Hacking For Ramen

Series

Nebula

Nebula takes the participant through a variety of common vulnerabilities in Linux. At the end of Nebula, the user will have a thorough understanding of local attacks against Linux systems.

Articles in this series

Nebula - 00

Oct 14, 20211 min read

After a long break from posting something, I’m pleased to start the new series - Exploit Development. I decided to start with the Nebula challenge...

Nebula - 00

Nebula - 01

Oct 14, 20212 min read

There is a vulnerability in the below program that allows arbitrary programs to be executed, can you find it? To do this level, log in as the level01...

Nebula - 01

Nebula - 02

Oct 22, 20211 min read

There is a vulnerability in the below program that allows arbitrary programs to be executed, can you find it? To do this level, log in as the level02...

Nebula - 02

Nebula - 03

Oct 23, 20211 min read

Check the home directory of flag03 and take note of the files there. There is a crontab that is called every couple of minutes. To do this level, log...

Nebula - 03

Nebula - 04

Oct 24, 20212 min read

This level requires you to read the token file, but the code restricts the files that can be read. Find a way to bypass it. To do this level, log in...

Nebula - 04

Nebula - 05

Oct 25, 20212 min read

Check the flag05 home directory. You are looking for weak directory permissions. To do this level, log in as the level05 account with the password...

Nebula - 05