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236 lines
3.6 KiB
236 lines
3.6 KiB
#!/usr/bin/python3
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charmap = {
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' ': 0x00,
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'0': 0xA1,
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'1': 0xA2,
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'2': 0xA3,
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'3': 0xA4,
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'4': 0xA5,
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'5': 0xA6,
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'6': 0xA7,
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'7': 0xA8,
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'8': 0xA9,
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'9': 0xAA,
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'!': 0xAB,
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'?': 0xAC,
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'.': 0xAD,
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'-': 0xAE,
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'…': 0xB0,
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'“': 0xB1,
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'”': 0xB2,
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'‘': 0xB3,
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'’': 0xB4,
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'♂': 0xB5,
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'♀': 0xB6,
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',': 0xB8,
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'/': 0xBA,
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'A': 0xBB,
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'B': 0xBC,
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'C': 0xBD,
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'D': 0xBE,
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'E': 0xBF,
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'F': 0xC0,
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'G': 0xC1,
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'H': 0xC2,
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'I': 0xC3,
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'J': 0xC4,
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'K': 0xC5,
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'L': 0xC6,
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'M': 0xC7,
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'N': 0xC8,
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'O': 0xC9,
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'P': 0xCA,
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'Q': 0xCB,
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'R': 0xCC,
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'S': 0xCD,
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'T': 0xCE,
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'U': 0xCF,
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'V': 0xD0,
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'W': 0xD1,
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'X': 0xD2,
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'Y': 0xD3,
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'Z': 0xD4,
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'a': 0xD5,
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'b': 0xD6,
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'c': 0xD7,
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'd': 0xD8,
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'e': 0xD9,
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'f': 0xDA,
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'g': 0xDB,
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'h': 0xDC,
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'i': 0xDD,
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'j': 0xDE,
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'k': 0xDF,
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'l': 0xE0,
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'm': 0xE1,
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'n': 0xE2,
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'o': 0xE3,
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'p': 0xE4,
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'q': 0xE5,
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'r': 0xE6,
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's': 0xE7,
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't': 0xE8,
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'u': 0xE9,
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'v': 0xEA,
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'w': 0xEB,
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'x': 0xEC,
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'y': 0xED,
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'z': 0xEE,
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'$': 0xFF,
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}
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chars = [
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' ',
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'0',
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'1',
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'2',
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'3',
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'4',
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'5',
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'6',
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'7',
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'8',
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'9',
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'!',
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'?',
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'.',
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'-',
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'…',
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'“',
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'”',
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'‘',
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'’',
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'♂',
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'♀',
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',',
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'/',
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'A',
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'B',
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'C',
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'D',
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'E',
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'F',
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'G',
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'H',
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'I',
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'J',
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'K',
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'L',
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'M',
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'N',
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'O',
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'P',
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'Q',
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'R',
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'S',
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'T',
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'U',
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'V',
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'W',
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'X',
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'Y',
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'Z',
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'a',
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'b',
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'c',
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'd',
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'e',
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'f',
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'g',
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'h',
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'i',
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'j',
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'k',
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'l',
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'm',
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'n',
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'o',
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'p',
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'q',
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'r',
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's',
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't',
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'u',
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'v',
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'w',
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'x',
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'y',
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'z',
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'$',
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]
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# Script vars are u16
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def one_round(string, starting_val, coeffs, addends):
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assert(len(coeffs) == 10)
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assert(len(string) == 10)
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var32769 = starting_val
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for c,n,x in zip(string,coeffs,addends):
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var32769 = (var32769 + charmap[c]) % 65536
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var32769 = (var32769 * n) % 65536
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var32769 = (var32769 + x) % 65536
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return var32769
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round1 = (6969, [73, 97, 13, 41, 67, 101, 89, 139, 71, 83], [6367, 5099, 4591, 4421, 4831, 3581, 5039, 5279, 4079, 4021])
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round2 = (1337, [59, 181, 127, 163, 103, 163, 149, 193, 211, 151], [3701, 4603, 4663, 4703, 4219, 6481, 6983, 5407, 5297, 5099])
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def get_hash_for(string):
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var32771 = one_round(string, *round1)
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var32769 = one_round(string, *round2)
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return hex(var32771),hex(var32769)
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def get_unk_coeffs(round):
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constant = one_round(" ", *round)
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coeffs = []
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for c in round[1]:
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for i in range(len(coeffs)):
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coeffs[i] = (coeffs[i] * c) % 65536
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coeffs.append(c)
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return constant,coeffs
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simple_round1 = get_unk_coeffs(round1)
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simple_round2 = get_unk_coeffs(round2)
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print(simple_round1)
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print(simple_round2)
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def simple_round(string, starting_val, coeffs):
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return (starting_val + sum([ (charmap[char] * coeff) % 65536 for (char,coeff) in zip(string,coeffs) ])) % 65536
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def simple_hash(string):
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var32771 = simple_round(string, *simple_round1)
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var32769 = simple_round(string, *simple_round2)
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return hex(var32771),hex(var32769)
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# all = len(chars) ** 10
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# for x in range(all):
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# s = ""
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# while x:
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# s += chars[x % len(chars)]
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# x //= len(chars)
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# while len(s) < 10:
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# s += "$"
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# hash = simple_hash(s)
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# if hash == 0xB0EF:
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# print(s)
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print(get_hash_for("0123456789"), simple_hash("0123456789"))
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print(get_hash_for("$$$$$$$$$$"), simple_hash("$$$$$$$$$$"))
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print(get_hash_for("ABABABABAB"), simple_hash("ABABABABAB"))
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print(get_hash_for("6969696969"), simple_hash("6969696969"))
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def print_simple(starting_val, coeffs, target):
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print(coeffs, hex((target - starting_val) % 65536))
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print_simple(*simple_round1, 45295)
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print_simple(*simple_round2, 54457)
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for char in charmap:
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print("0x%04X" % ((charmap[char] * 39437) & 0xffff))
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# a1 * x1 + a2 * x2 + C = <>
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# (a1 + a2) * (x1 + x2) + C
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