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0706 [DigitalForensic] with CTF 사진 속에서 빨간색이 좀 이상해 보입니까?2020/Write-Ups 2020. 7. 6. 01:21
화요일팀 박상은
[DigitalForensic] with CTF
www.ctf-d.com
문제에서 '빨간색' 이 힌트이다
steganography문제!
해당 'steganography'를 자세히 알고 싶다면 이 글을 읽어보는것도 괜찮겠다
https://incoherency.co.uk/blog/stories/image-steganography.html
James Stanley - How to defeat naive image steganography
James Stanley How to defeat naive image steganography Wed 27 April 2016 Tagged: steganography, software As a teenager, I wrote a C program to do image steganography. It hid the secret image in the least significant bits of the cover image. I also made a PH
incoherency.co.uk
What is steganography? A complete guide to the ancient art of concealing messages
Hidden secrets laid bare
portswigger.net
https://incoherency.co.uk/image-steganography/#unhide
Image Steganography
Each channel (red, green, blue) of each pixel in an image is represented by an 8-bit value. To hide the secret image inside the cover image, we replace the n least significant bits of the cover pixel value with the same number of most significant bits from
incoherency.co.uk
위 사이트를 이용하면 해당 아래 이미지가 나온다!
키값을 알수 있다!
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