picoCTF WriteUp - Glory of the Garden

Hello Everyone,

I hope you are doing well.

Please note that, this CTF competition is over so I have rights to post the writeup publicly according to the policy.

I hope that you have tried all the possible ways to solve the challenge and you are here because you have still not found the solution.

Flag Format: picoCTF{FLAG}

Challenge Details:

Hints: What is a hex editor?

Solution:

When we click on the garden link present in the challenge it downloads “garden.jpg” image. When I opened the image it was showing picture of garden.

From the given hint, I though of looking what’s actually inside the file so I used strings command from Linux Terminal.

strings filename

This give actual content of the file. So when I used the it on garden.jpg file it gave lot of scrambled data and flag at the end. So I created this one liner to get the flag easily.

strings garden.jpg  | grep picoCTF

Flag: picoCTF{more_than_m33ts_the_3y3657BaB2C}

I hope that you have enjoyed the writeup and learned something new today, Please let me know if there are any concerns.

Thank You