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kynex7510/make_secureinfo.py

Last active July 28, 2025 19:31
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Build and sign SecureInfo_A files
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make_secureinfo.py
"""
make_secureinfo.py
Build and sign SecureInfo_A files.
- Kynex7510
"""
from cryptography.hazmat.primitives.asymmetric import rsa, padding
from cryptography.hazmat.primitives import hashes
RETAIL_MODULO = [
0xB1, 0x79, 0x1A, 0x6D, 0x1E, 0xAD, 0xD4, 0x29, 0xBA, 0x89, 0xA1, 0xCD, 0x43, 0x36, 0x30, 0x17,
0x4B, 0xC6, 0x87, 0x30, 0xC5, 0xE7, 0x05, 0x60, 0x19, 0x7B, 0x50, 0xD8, 0xC4, 0x54, 0x67, 0x10,
0xA6, 0xE8, 0xA1, 0x01, 0xBC, 0x2C, 0xEB, 0x03, 0x76, 0xF0, 0x05, 0xC7, 0x0C, 0xE0, 0xB6, 0xD6,
0xDF, 0xFD, 0x26, 0xDF, 0x33, 0x46, 0x8B, 0xDB, 0xB2, 0x39, 0x1E, 0x7E, 0xC0, 0x1A, 0xA1, 0xA5,
0xA0, 0x91, 0xE8, 0x07, 0xDA, 0x37, 0x86, 0x76, 0xBA, 0x39, 0x0A, 0x25, 0x42, 0x9D, 0x59, 0x61,
0xE1, 0x61, 0xD4, 0x04, 0x85, 0xA7, 0x4B, 0xB2, 0x01, 0x86, 0xBE, 0xB1, 0x1A, 0x35, 0x72, 0xC1,
0xC2, 0xEA, 0x28, 0xAB, 0x7A, 0x10, 0x15, 0x32, 0x5C, 0x9E, 0x71, 0x2B, 0x7D, 0xF9, 0x65, 0xEA,
0xE6, 0xC6, 0xFB, 0x8B, 0xAE, 0xD7, 0x6C, 0x2A, 0x94, 0xA6, 0xC5, 0xEC, 0xE4, 0x0E, 0xAF, 0x98,
0x7E, 0x06, 0xF2, 0x0F, 0x88, 0x4F, 0xD2, 0x06, 0x35, 0xA4, 0x76, 0xE9, 0xF7, 0x0A, 0xBA, 0x5C,
0x5B, 0x14, 0x61, 0x52, 0x00, 0x54, 0x04, 0x45, 0x93, 0xE4, 0x68, 0x27, 0x04, 0x35, 0x35, 0x5A,
0xAD, 0x58, 0x09, 0xD1, 0x19, 0x3F, 0x5A, 0x07, 0x28, 0xD6, 0xDB, 0x6B, 0x55, 0x1F, 0x77, 0x94,
0x5D, 0xC3, 0xBE, 0x6F, 0xAE, 0x5B, 0xCC, 0x08, 0x63, 0xE4, 0x76, 0xDF, 0xA2, 0x9B, 0x36, 0xEA,
0x85, 0x34, 0x03, 0xE6, 0x16, 0xEA, 0xA9, 0x05, 0xE0, 0x7F, 0x3A, 0x3E, 0x7E, 0x70, 0x77, 0xCF,
0x16, 0x6A, 0x61, 0xD1, 0x7E, 0x4D, 0x35, 0x4C, 0x74, 0x44, 0x85, 0xD4, 0xF6, 0x7B, 0x0E, 0xEE,
0x32, 0xF1, 0xC2, 0xD5, 0x79, 0x02, 0x48, 0xE9, 0x62, 0x1A, 0x33, 0xBA, 0xA3, 0x9B, 0x02, 0xB0,
0x22, 0x94, 0x05, 0x7F, 0xF6, 0xB4, 0x38, 0x88, 0xE3, 0x01, 0xE5, 0x5A, 0x23, 0x7C, 0x9C, 0x0B
]
DEV_MODULO = [
0xB1, 0xAA, 0x6C, 0x55, 0x3C, 0xA8, 0x4D, 0x83, 0x3C, 0x2E, 0x97, 0x56, 0xB5, 0x2B, 0xD3, 0x70,
0x1D, 0x0F, 0xD4, 0xD1, 0xEE, 0xF1, 0x71, 0xF4, 0xFD, 0x95, 0x96, 0x1D, 0x52, 0xBF, 0x75, 0x63,
0xB8, 0x9D, 0x2F, 0xF5, 0xF8, 0x15, 0xE4, 0x0A, 0x76, 0xE2, 0x0F, 0x55, 0x11, 0x63, 0xE9, 0xE9,
0x85, 0x68, 0x41, 0x5A, 0x28, 0x31, 0x22, 0xE1, 0x99, 0xDE, 0xEC, 0x77, 0x17, 0x12, 0xC6, 0x78,
0xDA, 0x0B, 0xB4, 0xDD, 0x50, 0xF3, 0x0C, 0x61, 0x5F, 0xA5, 0x7D, 0xEA, 0x74, 0xD7, 0x1D, 0x11,
0x87, 0xBF, 0xEB, 0xC3, 0x33, 0xD7, 0x35, 0x0E, 0xDD, 0x45, 0x98, 0x1B, 0xEF, 0x6F, 0xB9, 0x73,
0xE8, 0x35, 0x9C, 0xE5, 0xB0, 0xC8, 0xFF, 0x5C, 0x42, 0x9B, 0xA7, 0x90, 0xAE, 0xF9, 0xB7, 0x62,
0x56, 0x04, 0xB1, 0xB0, 0xB2, 0x44, 0xD6, 0x86, 0x34, 0xE6, 0x2F, 0x79, 0x4D, 0x9C, 0xAF, 0xB5,
0x9A, 0x3B, 0xFA, 0xC8, 0x81, 0x03, 0x96, 0x6F, 0x9B, 0xDC, 0x87, 0x8B, 0x32, 0x3C, 0x37, 0xEB,
0xCD, 0x21, 0xC8, 0xB9, 0x27, 0x6F, 0xFC, 0xC8, 0x47, 0x02, 0xFF, 0x87, 0xD1, 0xD0, 0x2F, 0x64,
0xD4, 0x36, 0xD4, 0x85, 0x01, 0xAD, 0x70, 0xF3, 0xA2, 0xB1, 0x0D, 0x13, 0xEF, 0x55, 0x94, 0xA0,
0x23, 0x81, 0x71, 0xF9, 0x4A, 0xD2, 0x01, 0x58, 0x90, 0x60, 0x13, 0xFB, 0x6D, 0xB6, 0x18, 0x38,
0x31, 0xDF, 0x11, 0x44, 0xB5, 0x96, 0x49, 0xA3, 0x53, 0x08, 0xB2, 0x64, 0xC1, 0xEF, 0x11, 0x9E,
0x1D, 0x17, 0x17, 0x9A, 0x87, 0x44, 0x17, 0x3A, 0x73, 0xA2, 0xF7, 0xD9, 0x96, 0x1A, 0x79, 0xE1,
0xF9, 0x86, 0x6E, 0xEE, 0x6F, 0xBB, 0xD2, 0xDC, 0xCF, 0x3B, 0x0D, 0xC4, 0xE2, 0x76, 0xD1, 0xD0,
0xC0, 0x37, 0x98, 0xBE, 0xC1, 0xBC, 0xD9, 0x64, 0x6F, 0xC4, 0xCB, 0x46, 0xBB, 0x5F, 0xF5, 0x55
]
def check_serial(serial: str) -> bool:
if len(serial) > 16:
return False
data = serial.encode("ascii")
check_digit = int(data[-1]) - 0x30
even_sum = 0
odd_sum = 0
digit_count = 0
for i in range(len(data) - 1):
digit = int(data[i]) - 0x30
if digit >= 10:
continue
digit_count += 1
if digit_count & 1:
odd_sum += digit
else:
even_sum += digit
computed = ((3 * even_sum) + odd_sum) % 10
if computed != 0:
computed = 10 - computed
return computed == check_digit
def gen_signature(data: bytes, n: int, e: int, d: int) -> bytes:
(p, q) = rsa.rsa_recover_prime_factors(n, e, d)
dmp1 = rsa.rsa_crt_dmp1(d, p)
dmq1 = rsa.rsa_crt_dmq1(d, q)
iqmp = rsa.rsa_crt_iqmp(p, q)
priv_nums = rsa.RSAPrivateNumbers(
p=p,
q=q,
d=d,
dmp1=dmp1,
dmq1=dmq1,
iqmp=iqmp,
public_numbers=rsa.RSAPublicNumbers(e, n))
priv_key = priv_nums.private_key()
return priv_key.sign(data, padding.PKCS1v15(), hashes.SHA256())
if __name__ == "__main__":
rsa_e = 65537
# Ask for key type.
while True:
print("Select key type:")
print("1) Retail")
print("2) Dev")
key_type = int(input("> "))
if key_type >= 1 and key_type <= 2:
break
print("ERROR: Invalid key type")
if key_type == 1:
rsa_n = int.from_bytes(bytes(RETAIL_MODULO), byteorder='big')
else:
rsa_n = int.from_bytes(bytes(DEV_MODULO), byteorder='big')
# Ask for private exponent.
while True:
privexp_path = input("Private exponent file path: ")
try:
with open(privexp_path, "rb") as f:
rsa_d = int.from_bytes(f.read(), byteorder='big')
# Check private exponent.
m = rsa_n//4
c = pow(m, rsa_d, rsa_n)
computed_m = pow(c, rsa_e, rsa_n)
if m == computed_m:
break
print("ERROR: Decryption test failed, invalid private exponent")
except OSError:
print("ERROR: File not found")
# Ask for region.
while True:
print("Select region:")
print("1) JPN")
print("2) USA")
print("3) EUR")
print("4) AUS")
print("5) CHN")
print("6) KOR")
print("7) TWN")
region = int(input("> ")) - 1
if region >= 0 and region <= 6:
# AUS -> EUR.
if region == 3:
region = 2
break
print("ERROR: Invalid region")
# Ask for serial.
while True:
serial = input("Serial (with check digit): ")
if check_serial(serial):
# Remove check digit.
serial = serial[:-1]
break
print("ERROR: invalid serial")
# Build file.
secureinfo_data = []
secureinfo_data.append(region)
secureinfo_data.append(0x00)
secureinfo_data.extend(serial.encode("ascii"))
secureinfo_data.extend([0x00 for _ in range(0xF - len(serial))])
signature = gen_signature(bytes(secureinfo_data), rsa_n, rsa_e, rsa_d)
with open("SecureInfo_A", "wb") as out:
out.write(bytes(signature))
out.write(bytes(secureinfo_data))
print("Done!")
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