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https://github.com/encounter/BootCtr9.git
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delebile
45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
from Crypto.Cipher import AES
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from Crypto.Hash import SHA256
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from Crypto.Util import Counter
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from ctypes import *
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import struct
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import sys
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#http://www.falatic.com/index.php/108/python-and-bitwise-rotation
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rol = lambda val, r_bits, max_bits: \
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(val << r_bits%max_bits) & (2**max_bits-1) | \
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((val & (2**max_bits-1)) >> (max_bits-(r_bits%max_bits)))
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ror = lambda val, r_bits, max_bits: \
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((val & (2**max_bits-1)) >> r_bits%max_bits) | \
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(val << (max_bits-(r_bits%max_bits)) & (2**max_bits-1))
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def to_bytes(num):
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numstr = ''
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tmp = num
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while len(numstr) < 16:
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numstr += chr(tmp & 0xFF)
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tmp >>= 8
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return numstr[::-1]
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with open(sys.argv[1], "rb") as sectorFile:
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secretSector = sectorFile.read(0x200)
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with open(sys.argv[2], "rb") as otpFile:
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hash = SHA256.new()
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otpData = otpFile.read(0x90)
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hash.update(otpData)
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keyX = ''.join(hash.hexdigest()[0:32])
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keyY = ''.join(hash.hexdigest()[32:64])
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normalKey = rol((rol(int(keyX, 16), 2, 128) ^ int(keyY, 16)) + 0x1FF9E9AAC5FE0408024591DC5D52768A, 87, 128)
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print normalKey
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ecbmode = AES.new(to_bytes(normalKey), AES.MODE_ECB)
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with open(sys.argv[3], "wb") as outFile:
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for x in xrange(0, 0x20):
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outFile.seek(x*0x10)
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if x == 1 :
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outFile.write(ecbmode.encrypt(to_bytes(int('000000000000000000000000003BF5F6', 16))))
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else :
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outFile.write(ecbmode.encrypt(secretSector[x*0x10:(x+1)*0x10])) |