Prompt

The hackers have hidden a message in this image. Find out what it is.

Walk-Through

This challenge will give you experience using basic Linux tools to find messages hidden with steganography. An image was altered slightly to embed a hidden flag somewhere in the raw binary of the image.

Questions

What is the hidden flag in the image?

The hidden flag can be found by using the Linux strings program. The following command will reveal the message:

strings Steg1.jpg | grep SKY

The strings command will search for sequences of ASCII text and the grep command will search those sequences for any that contain “SKY”, which is present in all flags.

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