Points: 150
Forensics
This is a really weird text file TXT? Can you find the flag?
How do operating systems know what kind of file it is? (It's not just the ending! Make sure to submit the flag as picoCTF{XXXXX}
We are given a text file of bytes. This hints to us that it is not just a plain-text .txt file. When we actually open the file we immediatly see the words PNG. If we change the filename extension to .png, it renders an image that shows us the flag.
picoCTF{now_you_know_about_extensions}