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Pixelated

Write-up author: jon-brandy

DESCRIPTION:

I have these 2 images, can you make a flag out of them? scrambled1.png scrambled2.png

HINTS:

  1. https://en.wikipedia.org/wiki/Visual_cryptography
  2. Think of different ways you can "stack" images

STEPS:

  1. First, download both images given.
  2. Next open the .png file to see it is corrupted or not.

SCRAMBLED1.PNG

image

SCRAMBLED2.PNG

image

  1. Based from the hint number one, we may have to concate the images into one pieces.

image

  1. For this solution i used a tools called stegsolve.jar.
  2. Open the first image file.

image

  1. Then on the analyze tab, choose image combiner.

image

  1. Choose the 2nd image.

RESULT

image

  1. Press the > button until ADD.

RESULT

image

  1. Finally we got the flag!

FLAG

picoCTF{d562333d}