Pico CTF (Hideme)

hideme

AUTHOR: GEOFFREY NJOGU

Description Every file gets a flag. The SOC analyst saw one image been sent back and forth between two people. They decided to investigate and found out that there was more than what meets the eye here.

Solution

This was a fun challenge. I enjoyed it alot, it was an easy one I would say. Lets solve it, shall we?

1. To begin with Download the file
2. Use the file command to understand the file strucure and see whether it is actually a png file.
3. After confirming that the file is actually a png file, we can now try zsteg to find hidden data.
4. Now let us look for hidden files using foremost , the output of foremost is stored in the output folder.
5. we are able to retrieve a zip file.
6. Let us now use 7z to unzip the zip file 7z x 00000077.zip
7. We get yet another folder secret
8. Getting into the folder, we are able to retrieve another image that has a flag written in it.
9. Opening the flag.png using xdg-open flag.png we get the flag
10. I recommend using online string extractors to extract the flag.