Colour Blind - UACTF 2022

While running the image through stegsolve/stegonline or manipulating the pixels in your favourite image editor won’t work, a hex editor should show you that the data portion of the bitmap contains more than two distinct hex values. Checking the image properties should also indicate that ishihara.bmp is a 16 color bitmap image, and as such, each individual hex value denotes a different colour. Hence, we know that the image contains a wider range colours than are being shown....

August 7, 2022 · javad