flareon8_Ch10_decrypt

flareon8_Ch10_decrypt

lookup = [ 90,132,6,69,174,203,232,243,87,254,166,61,94,65,8,208,51,
           34,33,129,32,221,0,160,35,175,113,4,139,245,24,29,225,15,
           101,9,206,66,120,62,195,55,202,143,100,50,224,172,222,145,
           124,42,192,7,244,149,159,64,83,229,103,182,122,82,78,63,131,
           75,201,130,114,46,118,28,241,30,204,183,215,199,138,16,121,26,
           77,25,53,22,125,67,43,205,134,171,68,146,212,14,152,20,185,
           155,167,36,27,60,226,58,211,240,253,79,119,209,163,12,72,128,
           106,218,189,216,71,91,250,150,11,236,207,73,217,17,127,177,39,
           231,197,178,99,230,40,54,179,93,251,220,168,112,37,246,176,156,
           165,95,184,57,228,133,169,252,19,2,81,48,242,105,255,116,191,89,
           181,70,23,194,88,97,153,235,164,158,137,238,108,239,162,144,115,
           140,84,188,109,219,44,214,227,161,141,80,247,52,213,249,1,123,142,
           190,104,107,85,157,45,237,47,147,21,31,196,136,170,248,13,92,234,86,
           3,193,154,56,5,111,98,74,18,223,96,148,41,117,126,173,233,10,49,180,
           187,186,135,59,38,210,110,102,200,76,151,198 ]

key = [ 0x61, 0xce, 0x31, 0xa0, 0x6d, 0xa6, 0x5f, 0x97,
        0x6f, 0x92, 0x31, 0x9a, 0x73, 0xa0, 0x68, 0xcb,
        0x74, 0xcc, 0x5f, 0x9d, 0x34, 0x8d, 0x64, 0x8c
]
infile = open('outfile.png','rb')
outfile = open('meme.png','wb')

i = 0

while True:
    ch = infile.read(1)
    if not ch:
        break
    ch = int.from_bytes(ch,'little')
    ch = ch ^ 0xFF
    if ch > 127:
        ch = ch ^ 0x42
    
    ch = lookup.index(ch)
    ch = ch ^ key[i % 24]
    ch = lookup.index(ch)
    outfile.write(ch.to_bytes(1,'little'))
    i = i + 1

outfile.close()
infile.close()