363 lines
7.9 KiB
Python
363 lines
7.9 KiB
Python
# All credits to https://github.com/d4t4s3c/Win7Blue
|
||
# @d4t4s3c
|
||
# Module by @mpgn_x64
|
||
|
||
from ctypes import *
|
||
import socket
|
||
import struct
|
||
|
||
class CMEModule:
|
||
|
||
name = 'ms17-010'
|
||
description = "MS17-010, /!\ not tested oustide home lab"
|
||
supported_protocols = ['smb']
|
||
opsec_safe = True
|
||
multiple_hosts = True
|
||
|
||
def options(self, context, module_options):
|
||
'''
|
||
'''
|
||
|
||
def on_login(self, context, connection):
|
||
if check(connection.host):
|
||
context.log.highlight("VULNERABLE")
|
||
context.log.highlight("Next step: https://www.rapid7.com/db/modules/exploit/windows/smb/ms17_010_eternalblue/")
|
||
|
||
class SMB_HEADER(Structure):
|
||
"""SMB Header decoder.
|
||
"""
|
||
|
||
_pack_ = 1
|
||
|
||
_fields_ = [
|
||
("server_component", c_uint32),
|
||
("smb_command", c_uint8),
|
||
("error_class", c_uint8),
|
||
("reserved1", c_uint8),
|
||
("error_code", c_uint16),
|
||
("flags", c_uint8),
|
||
("flags2", c_uint16),
|
||
("process_id_high", c_uint16),
|
||
("signature", c_uint64),
|
||
("reserved2", c_uint16),
|
||
("tree_id", c_uint16),
|
||
("process_id", c_uint16),
|
||
("user_id", c_uint16),
|
||
("multiplex_id", c_uint16)
|
||
]
|
||
|
||
def __new__(self, buffer=None):
|
||
return self.from_buffer_copy(buffer)
|
||
|
||
def generate_smb_proto_payload(*protos):
|
||
"""Generate SMB Protocol. Pakcet protos in order.
|
||
"""
|
||
hexdata = []
|
||
for proto in protos:
|
||
hexdata.extend(proto)
|
||
return "".join(hexdata)
|
||
|
||
|
||
def calculate_doublepulsar_xor_key(s):
|
||
"""Calaculate Doublepulsar Xor Key
|
||
"""
|
||
x = (2 * s ^ (((s & 0xff00 | (s << 16)) << 8) | (((s >> 16) | s & 0xff0000) >> 8)))
|
||
x = x & 0xffffffff
|
||
return x
|
||
|
||
|
||
def negotiate_proto_request():
|
||
"""Generate a negotiate_proto_request packet.
|
||
"""
|
||
netbios = [
|
||
'\x00',
|
||
'\x00\x00\x54'
|
||
]
|
||
|
||
smb_header = [
|
||
'\xFF\x53\x4D\x42',
|
||
'\x72',
|
||
'\x00\x00\x00\x00',
|
||
'\x18',
|
||
'\x01\x28',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\x2F\x4B',
|
||
'\x00\x00',
|
||
'\xC5\x5E'
|
||
]
|
||
|
||
negotiate_proto_request = [
|
||
'\x00',
|
||
'\x31\x00',
|
||
|
||
'\x02',
|
||
'\x4C\x41\x4E\x4D\x41\x4E\x31\x2E\x30\x00',
|
||
|
||
'\x02',
|
||
'\x4C\x4D\x31\x2E\x32\x58\x30\x30\x32\x00',
|
||
|
||
'\x02',
|
||
'\x4E\x54\x20\x4C\x41\x4E\x4D\x41\x4E\x20\x31\x2E\x30\x00',
|
||
|
||
'\x02',
|
||
'\x4E\x54\x20\x4C\x4D\x20\x30\x2E\x31\x32\x00'
|
||
]
|
||
|
||
return generate_smb_proto_payload(netbios, smb_header, negotiate_proto_request)
|
||
|
||
|
||
def session_setup_andx_request():
|
||
"""Generate session setuo andx request.
|
||
"""
|
||
netbios = [
|
||
'\x00',
|
||
'\x00\x00\x63'
|
||
]
|
||
|
||
smb_header = [
|
||
'\xFF\x53\x4D\x42',
|
||
'\x73',
|
||
'\x00\x00\x00\x00',
|
||
'\x18',
|
||
'\x01\x20',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\x2F\x4B',
|
||
'\x00\x00',
|
||
'\xC5\x5E',
|
||
]
|
||
|
||
session_setup_andx_request = [
|
||
'\x0D',
|
||
'\xFF',
|
||
'\x00',
|
||
'\x00\x00',
|
||
'\xDF\xFF',
|
||
'\x02\x00',
|
||
'\x01\x00',
|
||
'\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00',
|
||
'\x40\x00\x00\x00',
|
||
'\x26\x00',
|
||
'\x00',
|
||
'\x2e\x00',
|
||
'\x57\x69\x6e\x64\x6f\x77\x73\x20\x32\x30\x30\x30\x20\x32\x31\x39\x35\x00',
|
||
'\x57\x69\x6e\x64\x6f\x77\x73\x20\x32\x30\x30\x30\x20\x35\x2e\x30\x00',
|
||
]
|
||
|
||
return generate_smb_proto_payload(netbios, smb_header, session_setup_andx_request)
|
||
|
||
|
||
def tree_connect_andx_request(ip, userid):
|
||
"""Generate tree connect andx request.
|
||
"""
|
||
|
||
netbios = [
|
||
'\x00',
|
||
'\x00\x00\x47'
|
||
]
|
||
|
||
smb_header = [
|
||
'\xFF\x53\x4D\x42',
|
||
'\x75',
|
||
'\x00\x00\x00\x00',
|
||
'\x18',
|
||
'\x01\x20',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\x2F\x4B',
|
||
userid,
|
||
'\xC5\x5E'
|
||
]
|
||
|
||
ipc = "\\\\{}\IPC$\x00".format(ip)
|
||
|
||
tree_connect_andx_request = [
|
||
'\x04',
|
||
'\xFF',
|
||
'\x00',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\x01\x00',
|
||
'\x1A\x00',
|
||
'\x00',
|
||
ipc.encode(),
|
||
'\x3f\x3f\x3f\x3f\x3f\x00'
|
||
]
|
||
|
||
length = len("".join(smb_header)) + len("".join(tree_connect_andx_request))
|
||
|
||
netbios[1] = struct.pack(">L", length)[-3:]
|
||
|
||
return generate_smb_proto_payload(netbios, smb_header, tree_connect_andx_request)
|
||
|
||
|
||
def peeknamedpipe_request(treeid, processid, userid, multiplex_id):
|
||
"""Generate tran2 request
|
||
"""
|
||
|
||
netbios = [
|
||
'\x00',
|
||
'\x00\x00\x4a'
|
||
]
|
||
|
||
smb_header = [
|
||
'\xFF\x53\x4D\x42',
|
||
'\x25',
|
||
'\x00\x00\x00\x00',
|
||
'\x18',
|
||
'\x01\x28',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
treeid,
|
||
processid,
|
||
userid,
|
||
multiplex_id
|
||
]
|
||
|
||
tran_request = [
|
||
'\x10',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\xff\xff',
|
||
'\xff\xff',
|
||
'\x00',
|
||
'\x00',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
'\x00\x00',
|
||
'\x4a\x00',
|
||
'\x00\x00',
|
||
'\x4a\x00',
|
||
'\x02',
|
||
'\x00',
|
||
'\x23\x00',
|
||
'\x00\x00',
|
||
'\x07\x00',
|
||
'\x5c\x50\x49\x50\x45\x5c\x00'
|
||
]
|
||
|
||
return generate_smb_proto_payload(netbios, smb_header, tran_request)
|
||
|
||
|
||
def trans2_request(treeid, processid, userid, multiplex_id):
|
||
"""Generate trans2 request.
|
||
"""
|
||
|
||
netbios = [
|
||
'\x00',
|
||
'\x00\x00\x4f'
|
||
]
|
||
|
||
smb_header = [
|
||
'\xFF\x53\x4D\x42',
|
||
'\x32',
|
||
'\x00\x00\x00\x00',
|
||
'\x18',
|
||
'\x07\xc0',
|
||
'\x00\x00',
|
||
'\x00\x00\x00\x00\x00\x00\x00\x00',
|
||
'\x00\x00',
|
||
treeid,
|
||
processid,
|
||
userid,
|
||
multiplex_id
|
||
]
|
||
|
||
trans2_request = [
|
||
'\x0f',
|
||
'\x0c\x00',
|
||
'\x00\x00',
|
||
'\x01\x00',
|
||
'\x00\x00',
|
||
'\x00',
|
||
'\x00',
|
||
'\x00\x00',
|
||
'\xa6\xd9\xa4\x00',
|
||
'\x00\x00',
|
||
'\x0c\x00',
|
||
'\x42\x00',
|
||
'\x00\x00',
|
||
'\x4e\x00',
|
||
'\x01',
|
||
'\x00',
|
||
'\x0e\x00',
|
||
'\x00\x00',
|
||
'\x0c\x00' + '\x00' * 12
|
||
]
|
||
|
||
return generate_smb_proto_payload(netbios, smb_header, trans2_request)
|
||
|
||
def check(ip, port=445):
|
||
"""Check if MS17_010 SMB Vulnerability exists.
|
||
"""
|
||
try:
|
||
buffersize = 1024
|
||
timeout = 5.0
|
||
|
||
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||
client.settimeout(timeout)
|
||
client.connect((ip, port))
|
||
|
||
raw_proto = negotiate_proto_request()
|
||
client.send(raw_proto)
|
||
tcp_response = client.recv(buffersize)
|
||
|
||
raw_proto = session_setup_andx_request()
|
||
client.send(raw_proto)
|
||
tcp_response = client.recv(buffersize)
|
||
netbios = tcp_response[:4]
|
||
smb_header = tcp_response[4:36]
|
||
smb = SMB_HEADER(smb_header)
|
||
|
||
user_id = struct.pack('<H', smb.user_id)
|
||
|
||
session_setup_andx_response = tcp_response[36:]
|
||
native_os = session_setup_andx_response[9:].split('\x00')[0]
|
||
|
||
raw_proto = tree_connect_andx_request(ip, user_id)
|
||
client.send(raw_proto)
|
||
tcp_response = client.recv(buffersize)
|
||
|
||
netbios = tcp_response[:4]
|
||
smb_header = tcp_response[4:36]
|
||
smb = SMB_HEADER(smb_header)
|
||
|
||
tree_id = struct.pack('<H', smb.tree_id)
|
||
process_id = struct.pack('<H', smb.process_id)
|
||
user_id = struct.pack('<H', smb.user_id)
|
||
multiplex_id = struct.pack('<H', smb.multiplex_id)
|
||
|
||
raw_proto = peeknamedpipe_request(tree_id, process_id, user_id, multiplex_id)
|
||
client.send(raw_proto)
|
||
tcp_response = client.recv(buffersize)
|
||
|
||
netbios = tcp_response[:4]
|
||
smb_header = tcp_response[4:36]
|
||
smb = SMB_HEADER(smb_header)
|
||
|
||
nt_status = struct.pack('BBH', smb.error_class, smb.reserved1, smb.error_code)
|
||
|
||
|
||
if nt_status == '\x05\x02\x00\xc0':
|
||
return True
|
||
elif nt_status in ('\x08\x00\x00\xc0', '\x22\x00\x00\xc0'):
|
||
return False
|
||
else:
|
||
return False
|
||
|
||
except Exception as err:
|
||
return False
|
||
finally:
|
||
client.close() |