CTF_Writeups

Mastardet Basic Binary and Linux

Description

Find the flag in the binary.

• Category: Basic Binary and Linux
• Creator: mastardet
• Challenge File: mastardet_challenge.tar.gz

Make sure you try the challenge once on your own beofre reading the writeup. You can also find Hints below.

Hints

• HINT 1: try searching strings with the hostname of the machine, in the binary
• HINT 2: flag.txt has the flag in it. Don’t worry if you see it’s 0 bytes
• HINT 3: you could ask the server for help
• HINT 4: We are nothing without history
• HINT 5: And linux is nothing without environment variables

More about the creator of the challenge

This challenge was created by mastardet who is a great friend and even mentor to me. He is great person with around 15 years of experience in the field and currently, works as an ethical hacker and a software developer. He has helped me learn a lot of stuff in the field of penetration testing. Make sure you guys check out his youtube channel, definitely you will learn lot of good and useful stuff from his videos!