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#!/usr/bin/env python
# Impacket - Collection of Python classes for working with network protocols.
#
# Copyright Fortra, LLC and its affiliated companies
#
# All rights reserved.
#
# This software is provided under a slightly modified version
# of the Apache Software License. See the accompanying LICENSE file
# for more information.
#
# Description:
# Through MS-DSSP, this script retrieves a host's role along with
# its primary domain details.
#
# This may be particularly useful when it is used in a script where
# further operations depend on knowing the role of its target,
# e.g. "I do not want to perform this on a DC".
#
# Author:
# Simon Decosse (@simondotsh)
#
import sys
import logging
import argparse
from impacket.examples import logger
from impacket.examples.utils import parse_target
from impacket import version
from impacket.uuid import bin_to_string
from impacket.dcerpc.v5 import transport, dssp
class MachineRole:
# https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dssp/09f0677f-52e5-454d-9a65-0e8d8ba6fdeb
MACHINE_ROLES = {
dssp.DSROLE_MACHINE_ROLE.DsRole_RoleStandaloneWorkstation:
'Standalone Workstation',
dssp.DSROLE_MACHINE_ROLE.DsRole_RoleMemberWorkstation:
'Domain-joined Workstation',
dssp.DSROLE_MACHINE_ROLE.DsRole_RoleStandaloneServer:
'Standalone Server',
dssp.DSROLE_MACHINE_ROLE.DsRole_RoleMemberServer:
'Domain-joined Server',
dssp.DSROLE_MACHINE_ROLE.DsRole_RoleBackupDomainController:
'Backup Domain Controller',
dssp.DSROLE_MACHINE_ROLE.DsRole_RolePrimaryDomainController:
'Primary Domain Controller'
}
def __init__(self, username='', password='', domain='', hashes=None,
aesKey=None, doKerberos=False, kdcHost=None, port=445):
self.__username = username
self.__password = password
self.__domain = domain
self.__lmhash = ''
self.__nthash = ''
self.__aesKey = aesKey
self.__doKerberos = doKerberos
self.__kdcHost = kdcHost
self.__port = port
if hashes is not None:
self.__lmhash, self.__nthash = hashes.split(':')
def print_info(self, remoteName, remoteHost):
try:
dce = self.__authenticate(remoteName, remoteHost)
except Exception as e:
self.__log_and_exit(str(e))
try:
output = self.__fetch(dce)
except Exception as e:
self.__log_and_exit(str(e))
for key, value in output.items():
print('%s: %s' % (key, value))
dce.disconnect()
def __authenticate(self, remoteName, remoteHost):
dce = self.__get_transport(remoteName, remoteHost)
dce.connect()
dce.bind(dssp.MSRPC_UUID_DSSP)
return dce
def __get_transport(self, remoteName, remoteHost):
stringbinding = r'ncacn_np:%s[\pipe\lsarpc]' % remoteName
logging.debug('StringBinding %s' % stringbinding)
rpctransport = transport.DCERPCTransportFactory(stringbinding)
rpctransport.set_dport(self.__port)
rpctransport.setRemoteHost(remoteHost)
if hasattr(rpctransport, 'set_credentials'):
# This method exists only for selected protocol sequences.
rpctransport.set_credentials(self.__username, self.__password, self.__domain, self.__lmhash,
self.__nthash, self.__aesKey)
rpctransport.set_kerberos(self.__doKerberos, self.__kdcHost)
return rpctransport.get_dce_rpc()
def __fetch(self, dce):
output = {}
domain_info = dssp.hDsRolerGetPrimaryDomainInformation(dce, 1)
output['Machine Role'] = self.MACHINE_ROLES[domain_info['DomainInfo']['DomainInfoBasic']['MachineRole']]
output['NetBIOS Domain Name'] = domain_info['DomainInfo']['DomainInfoBasic']['DomainNameFlat']
output['Domain Name'] = domain_info['DomainInfo']['DomainInfoBasic']['DomainNameDns']
output['Forest Name'] = domain_info['DomainInfo']['DomainInfoBasic']['DomainForestName']
output['Domain GUID'] = bin_to_string(domain_info['DomainInfo']['DomainInfoBasic']['DomainGuid'])
return output
def __log_and_exit(self, error):
logging.critical('Error while enumerating host: %s' % error)
sys.exit(1)
if __name__ == '__main__':
print(version.BANNER)
parser = argparse.ArgumentParser(add_help=True, description='Retrieve a host\'s role along with its primary domain details.')
parser.add_argument('target', action='store', help='[[domain/]username[:password]@]<targetName or address>')
parser.add_argument('-ts', action='store_true', help='Adds timestamp to every logging output')
parser.add_argument('-debug', action='store_true', help='Turn DEBUG output ON')
group = parser.add_argument_group('connection')
group.add_argument('-dc-ip', action='store',metavar='ip address', help='IP Address of the domain controller. If '
'ommited it use the domain part (FQDN) specified in the target parameter')
group.add_argument('-target-ip', action='store', metavar='ip address', help='IP Address of the target machine. If '
'ommited it will use whatever was specified as target. This is useful when target is the NetBIOS '
'name and you cannot resolve it')
group.add_argument('-port', choices=['139', '445'], nargs='?', default='445', metavar="destination port",
help='Destination port to connect to SMB Server')
group = parser.add_argument_group('authentication')
group.add_argument('-hashes', action='store', metavar='LMHASH:NTHASH', help='NTLM hashes, format is LMHASH:NTHASH')
group.add_argument('-no-pass', action='store_true', help='don\'t ask for password (useful for -k)')
group.add_argument('-k', action='store_true', help='Use Kerberos authentication. Grabs credentials from ccache file '
'(KRB5CCNAME) based on target parameters. If valid credentials cannot be found, it will use the '
'ones specified in the command line')
group.add_argument('-aesKey', action='store', metavar='hex key', help='AES key to use for Kerberos Authentication '
'(128 or 256 bits)')
if len(sys.argv)==1:
parser.print_help()
sys.exit(1)
options = parser.parse_args()
# Init the example's logger theme
logger.init(options.ts, options.debug)
domain, username, password, remoteName = parse_target(options.target)
if domain is None:
domain = ''
if options.target_ip is None:
options.target_ip = remoteName
if options.aesKey is not None:
options.k = True
if password == '' and username != '' and options.hashes is None and options.no_pass is False and options.aesKey is None:
from getpass import getpass
password = getpass('Password:')
machine_role = MachineRole(username, password, domain, options.hashes, options.aesKey, options.k, options.dc_ip, int(options.port))
machine_role.print_info(remoteName, options.target_ip)
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