Challenge Description
Right off the bat, the description seems interesting. “Hide and seek” implies that the flag may be hidden and may not be easily seen.
Contents
As per usual, we begin by downloading the file. For this challenge, it is a zip file. After unzipping, we get a .jpg file
How the JPG image looks like
The image doesn’t seem to tell us anything.
PicoCTF Hint: How can you view the information about the picture?
The clue seems to be hinting us to check the metadata of the picture. We shall do just that.
From the metadeta, we realise a suspicious string of characters shown for the Atrribution URL. It looks like it is base64 encoded. We shall try decoding it using CyberChef.
CyberChef output
Aha! There’s our flag.
Flag
picoCTF{ME74D47A_HIDD3N_4dabddcb}