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parksjin01/Backdoor-CTF 2013 Writeup.md

Last active March 16, 2017 04:54
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Backdoor-CTF 2013 Writeup
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Backdoor-CTF 2013 Writeup.md

forencis-150

  • It was the hardest problem with png, I've ever solved.
  • Change black if pixel's value is above the average of row pixel.
  • Now web site is deleted so can't get proper web page and get flag
  • Decoded image is in here
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