CTF

The more obscure crypto stuff goes here

Decode Flag from Long

from Crypto.Util.number import long_to_bytes

m = ...
print(long_to_bytes(m))

Subtract 2 Images (similar to xor)

from PIL import Image, ImageChops

i1 = Image.open('1.png')
i2 = Image.open('2.png')

iFlag = ImageChops.add(ImageChops.subtract(i2, i1), ImageChops.subtract(i1, i2))
iFlag.show()

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