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 hex value denotes a different colour. Hence, we know that the image contains a wider range of colours than are being shown....