Category: Crypto, 100 points
I have these 2 images, can you make a flag out of them?
Two PNG files were attached.
We receive two PNG files of 256x256, with what looks like random pixel values.
Well, there's only so much we can do to combine them to something that will produce a flag. In this case, we had to add the different pixel values:
from PIL import Image
import numpy as np
import os
file_names = ["scrambled1.png", "scrambled2.png"]
img_data = [np.asarray(Image.open(f'{name}')) for name in file_names]
data = img_data[0].copy() + img_data[1].copy()
new_image = Image.fromarray(data)
new_image.save("out.png", "PNG")The result image contained the flag: picoCTF{0542dc1d}