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driver_51x0_spi.py
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driver_51x0_spi.py
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import random
import re
import socket
import struct
import subprocess
import crcmod
import goodix
import protocol
import tool
TARGET_FIRMWARE = "GF_ST411SEC_APP_12117"
IAP_FIRMWARE = "MILAN_ST411SEC_IAP_12101"
VALID_FIRMWARE = "GF_ST411SEC_APP_121[0-9]{2}"
PSK = bytes.fromhex(
"0000000000000000000000000000000000000000000000000000000000000000")
PSK_WHITE_BOX = bytes.fromhex(
"ec35ae3abb45ed3f12c4751f1e5c2cc05b3c5452e9104d9f2a3118644f37a04b"
"6fd66b1d97cf80f1345f76c84f03ff30bb51bf308f2a9875c41e6592cd2a2f9e"
"60809b17b5316037b69bb2fa5d4c8ac31edb3394046ec06bbdacc57da6a756c5")
PMK_HASH = bytes.fromhex(
"ba1a86037c1d3c71c3af344955bd69a9a9861d9e911fa24985b677e8dbd72d43")
DEVICE_CONFIG = bytes.fromhex(
"701160712c9d2cc91ce518fd00fd00fd03ba000180ca000400840015b3860000"
"c4880000ba8a0000b28c0000aa8e0000c19000bbbb9200b1b1940000a8960000"
"b6980000009a000000d2000000d4000000d6000000d800000050000105d00000"
"00700000007200785674003412200010402a0102042200012024003200800001"
"005c008000560004205800030232000c02660003007c000058820080152a0182"
"032200012024001400800001005c000001560004205800030232000c02660003"
"007c0000588200801f2a0108005c008000540010016200040364001900660003"
"007c0001582a0108005c0000015200080054000001660003007c00015800892e")
SENSOR_WIDTH = 80
SENSOR_HEIGHT = 88
def init_device(product: int):
device = goodix.Device(product, protocol.SPIProtocol)
#device.nop()
#device.enable_chip(True)
#device.nop()
return device
def check_psk(device: goodix.Device):
success, flags, psk = device.preset_psk_read(0xbb020003)
if not success:
raise ValueError("Failed to read PSK")
if flags != 0xbb020003:
raise ValueError("Invalid flags")
return psk == PMK_HASH
def write_psk(device: goodix.Device):
if not device.preset_psk_write(0xbb010003, PSK_WHITE_BOX):
return False
if not check_psk(device):
return False
return True
def erase_firmware(device: goodix.Device):
device.mcu_erase_app(0, False)
device.disconnect()
def update_firmware(device: goodix.Device):
firmware_file = open(f"firmware/51x0/{TARGET_FIRMWARE}.bin", "rb")
firmware = firmware_file.read()
firmware_file.close()
try:
length = len(firmware)
for i in range(0, length, 1008):
if not device.write_firmware(i, firmware[i:i + 1008]):
raise ValueError("Failed to write firmware")
if not device.check_firmware(
0, length,
crcmod.predefined.mkCrcFun("crc-32-mpeg")(firmware)):
raise ValueError("Failed to check firmware")
except Exception as error:
print(
tool.warning(
f"The program went into serious problems while trying to "
f"update the firmware: {error}"))
erase_firmware(device)
raise error
device.reset(False, True, 20)
device.disconnect()
def run_driver(device: goodix.Device):
tls_server = subprocess.Popen([
"openssl", "s_server", "-nocert", "-psk",
PSK.hex(), "-port", "4433", "-quiet"
],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
try:
success, number = device.reset(True, False, 20)
if not success:
raise ValueError("Reset failed")
if number != 2048:
raise ValueError("Invalid reset number")
if device.read_sensor_register(0x0000, 4) != b"\xa2\x04\x25\x00":
raise ValueError("Invalid chip ID")
otp = device.read_otp()
if len(otp) < 64:
raise ValueError("Invalid OTP")
# OTP 0 = 5332383733342e0032778aa2d495ca05
# 5107050a7d0bfd274103110cf17f800c
# 38813034a57f5ef406c4bd4201bdb7b9
# b7b7b7b9b7b73230a55a5ea1850cfd71
# OTP 1 = 5332423937332e000a777aa3452cec02
# 510705027d4bd5274103d10cf18f700c
# 38c13033a58f5ff407f48e71018eb6b7
# b6b6b6b7b6b63450a55a5fa0c814d548
# OTP[00] = CP_DATA[00] = 0x53
# OTP[01] = CP_DATA[01] = 0x32
# OTP[02] = CP_DATA[02] = 0x38
# OTP[03] = CP_DATA[03] = 0x37
# OTP[04] = CP_DATA[04] = 0x33
# OTP[05] = CP_DATA[05] = 0x34
# OTP[06] = CP_DATA[06] = 0x2e
# OTP[07] = CP_DATA[07] = 0x00
# OTP[08] = CP_DATA[08] = 0x32
# OTP[09] = CP_DATA[09] = 0x77
# OTP[10] = CP_DATA[10] = 0x8a
# OTP[11] = FT_DATA[00] = 0xa2
# OTP[12] = FT_DATA[01] = 0xd4
# OTP[13] = FT_DATA[02] = 0x95
# OTP[14] = FT_DATA[03] = 0xca
# OTP[15] = FT_DATA[04] = 0x05
# OTP[16] = FT_DATA[05] = 0x51
# OTP[17] = FT_DATA[06] = 0x07
# OTP[18] = FT_DATA[07] = 0x05
# OTP[19] = FT_DATA[08] = 0x0a
# OTP[20] = MT_DATA[00] = 0x7d
# OTP[21] = MT_DATA[01] = 0x0b
# OTP[22] = MT_DATA[02] = ~CRC_8_CHECKSUM(MT_DAC_DATA) & 0xff = 0xfd
# OTP[23] = MT_DATA[03] = 0x27
# OTP[24] = MT_DATA[04] = 0x41
# OTP[25] = MT_DATA[05] = 0x03
# OTP[26] = MT_DATA[06] = 0x11
# OTP[27] = MT_DATA[07] = FDT_OFFSET = 0x0c
# OTP[28] = FT_DATA[09] = 0xf1
# OTP[29] = MT_DATA[08] = 0x7f
# OTP[30] = MT_DATA[09] = 0x80
# OTP[31] = MT_DATA[10] = 0x0c
# OTP[32] = MT_DATA[11] = 0x38
# OTP[33] = MT_DATA[12] = 0x81
# OTP[34] = MT_DATA[13] = 0x30
# OTP[35] = MT_DATA[14] = 0x34
# OTP[36] = CP_DATA[11] = 0xa5
# OTP[37] = CP_DATA[12] = 0x7f
# OTP[38] = CP_DATA[13] = 0x5e
# OTP[39] = CP_DATA[14] = 0xf4
# OTP[40] = MT_DATA[15] = 0x06
# OTP[41] = MT_DATA[16] = 0xc4
# OTP[42] = MT_DATA[17] = TCODE << 4 | DELTA & 0Xf = 0xbd
# OTP[43] = MT_DATA[18] = THRESHHOLD = 0x42
# OTP[44] = MT_DATA[19] = 0x01
# OTP[45] = MT_DATA[20] = 0xbd
# OTP[46] = MT_DATA[21] = MT_DAC_DATA[0] = 0xb7
# OTP[47] = MT_DATA[22] = MT_DAC_DATA[1] = 0xb9
# OTP[48] = MT_DATA[23] = MT_DAC_DATA[2] = 0xb7
# OTP[49] = MT_DATA[24] = MT_DAC_DATA[3] = 0xb7
# OTP[50] = FT_DATA[10] = FT_DAC_DATA[0] = 0xb7
# OTP[51] = FT_DATA[11] = FT_DAC_DATA[1] = 0xb9
# OTP[52] = FT_DATA[12] = FT_DAC_DATA[2] = 0xb7
# OTP[53] = FT_DATA[13] = FT_DAC_DATA[3] = 0xb7
# OTP[54] = MT_DATA[25] = 0x32
# OTP[55] = MT_DATA[26] = 0x30
# OTP[56] = FT_DATA[14] = 0xa5
# OTP[57] = FT_DATA[15] = 0x5a
# OTP[58] = FT_DATA[16] = 0x5e
# OTP[59] = FT_DATA[17] = 0xa1
# OTP[60] = ~CRC_8_CHECKSUM(CP_DATA) & 0xff = 0x85
# OTP[61] = ~CRC_8_CHECKSUM(FT_DATA) & 0xff = 0x0c
# OTP[62] = FT_DATA[18] = ~CRC_8_CHECKSUM(FT_DAC_DATA) & 0xff = 0xfd
# OTP[63] = ~CRC_8_CHECKSUM(MT_DATA) & 0xff = 0x71
if ~crcmod.predefined.mkCrcFun("crc-8")(otp[0:11] +
otp[36:40]) & 0xff != otp[60]:
raise ValueError("Invalid OTP CP data checksum")
if ~crcmod.predefined.mkCrcFun("crc-8")(otp[20:28] + otp[29:36] +
otp[40:50] +
otp[54:56]) & 0xff != otp[63]:
raise ValueError("Invalid OTP MT data checksum")
if ~crcmod.predefined.mkCrcFun("crc-8")(otp[11:20] + otp[28:29] +
otp[50:54] + otp[56:60] +
otp[62:63]) & 0xff != otp[61]:
raise ValueError("Invalid OTP FT data checksum")
if ~crcmod.predefined.mkCrcFun("crc-8")(otp[50:54]) & 0xff != otp[62]:
raise ValueError("Invalid OTP DAC FT data checksum")
if ~crcmod.predefined.mkCrcFun("crc-8")(otp[46:50]) & 0xff != otp[22]:
raise ValueError("Invalid OTP DAC MT data checksum")
if otp[50:54] != otp[46:50]:
raise ValueError("Invalid OTP DAC data")
if otp[42] == 0x00 or otp[42] != ~otp[43] & 0xff:
if otp[43] == 0x00 or otp[43] != ~otp[43] & 0xff:
if otp[42] == 0x00 or otp[43] != otp[42]:
raise ValueError("Invalid OTP Tcode and threshold data")
tcode = ((otp[42] >> 4) + 1) * 16 + 64
delta = int(((otp[42] & 0xf) + 2) * 25600 / tcode / 3) >> 4 & 0xff
if otp[27] != 0x00:
if otp[27] & 3 == otp[27] >> 4 & 3:
fdt_offset = otp[27] & 3
elif otp[27] & 3 == otp[27] >> 2 & 3:
fdt_offset = otp[27] & 3
elif otp[27] >> 4 & 3 == otp[27] >> 2 & 3:
fdt_offset = otp[27] >> 4 & 3
else:
fdt_offset = 0
else:
fdt_offset = 0
success, number = device.reset(True, False, 20)
if not success:
raise ValueError("Reset failed")
if number != 2048:
raise ValueError("Invalid reset number")
device.mcu_switch_to_idle_mode(20)
device.write_sensor_register(0x0220,
struct.pack("<H", otp[46] << 4 | 8))
device.write_sensor_register(0x0236, struct.pack("<H", otp[47]))
device.write_sensor_register(0x0238, struct.pack("<H", otp[48]))
device.write_sensor_register(0x023a, struct.pack("<H", otp[49]))
if not device.upload_config_mcu(DEVICE_CONFIG):
raise ValueError("Failed to upload config")
if not device.set_powerdown_scan_frequency(100):
raise ValueError("Failed to set powerdown scan frequency")
tls_client = socket.socket()
tls_client.connect(("localhost", 4433))
try:
tool.connect_device(device, tls_client)
device.tls_successfully_established()
device.query_mcu_state(b"\x55", True)
device.mcu_switch_to_fdt_mode(
b"\x0d\x01\xae\xae\xbf\xbf\xa4\xa4"
b"\xb8\xb8\xa8\xa8\xb7\xb7", True)
device.nav()
device.mcu_switch_to_fdt_mode(
b"\x0d\x01\x80\xaf\x80\xbf\x80\xa3"
b"\x80\xb7\x80\xa7\x80\xb6", True)
device.read_sensor_register(0x0082, 2)
tls_client.sendall(
device.mcu_get_image(b"\x01\x00",
goodix.FLAGS_TRANSPORT_LAYER_SECURITY))
tool.write_pgm(
tool.decode_image(tls_server.stdout.read(10573)[8:-5]),
SENSOR_WIDTH, SENSOR_HEIGHT, "clear.pgm")
device.mcu_switch_to_fdt_mode(
b"\x0d\x01\x80\xaf\x80\xbf\x80\xa4"
b"\x80\xb8\x80\xa8\x80\xb7", True)
print("Waiting for finger...")
device.mcu_switch_to_fdt_down(
b"\x0c\x01\x80\xaf\x80\xbf\x80\xa4"
b"\x80\xb8\x80\xa8\x80\xb7", True)
tls_client.sendall(
device.mcu_get_image(b"\x01\x00",
goodix.FLAGS_TRANSPORT_LAYER_SECURITY))
tool.write_pgm(
tool.decode_image(tls_server.stdout.read(10573)[8:-5]),
SENSOR_WIDTH, SENSOR_HEIGHT, "fingerprint.pgm")
finally:
tls_client.close()
finally:
tls_server.terminate()
def main(product: int):
print(
tool.warning(
"This program might break your device.\n"
"Consider that it may flash the device firmware.\n"
"Continue at your own risk.\n"
"But don't hold us responsible if your device is broken!\n"
"Don't run this program as part of a regular process."))
code = random.randint(0, 9999)
if input(f"Type {code} to continue and confirm that you are not a bot: "
) != str(code):
print("Abort")
return
previous_firmware = None
device = init_device(product)
while True:
firmware = device.firmware_version()
print(f"Firmware: {firmware}")
valid_psk = check_psk(device)
print(f"Valid PSK: {valid_psk}")
if firmware == previous_firmware:
raise ValueError("Unchanged firmware")
previous_firmware = firmware
if re.fullmatch(TARGET_FIRMWARE, firmware):
if not valid_psk:
erase_firmware(device)
device = init_device(product)
continue
run_driver(device)
return
if re.fullmatch(VALID_FIRMWARE, firmware):
erase_firmware(device)
device = init_device(product)
continue
if re.fullmatch(IAP_FIRMWARE, firmware):
if not valid_psk:
if not write_psk(device):
raise ValueError("Failed to write PSK")
update_firmware(device)
device = init_device(product)
continue
raise ValueError(
"Invalid firmware\n" +
tool.warning("Please consider that removing this security "
"is a very bad idea!"))