Pragyan – Steganography

ctf.pragyan.org

Lost Friends – 300

Moana and her friends were out on a sea voyage, spending their summer joyously.
Unfortnately, they came across Charybdis, the sea monster. Charybdis, furious over having unknown visitors, wreaked havoc on their ship. The ship was lost.
 
Luckily, Moana survived, and she was swept to a nearby island. But, since then, she has not seen her friends. Moana has come to you for help. She believes that her friends are still alive, and that you are the only one who can help her find them.

lost_friends
Nothing here O_O

The image looks empty. But, play around on GIMP (using our decompose trick we learnt earlier) we see that the RGB channels are pictures of Alvin and the Chipmunks!

The story in the challenge describes a shipwreck, so I’m assuming Alvin and the Chipmunks were in a shipwreck. Coincidentally there is a move about that, called Alvin and the Chipmunks: Chipwrecked.

lost_friends-RGBA.png

We still need some more information to go on, after looking at hex dump of the image we can see the following hidden message.

 Psssst, Director, maybe ??

So the flag is the Director’s name of the move Alvin and the Chipmunks: Chipwrecked?

Yep. -_-

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