Add spooler service module
Add spooler service module to detect if the service is enabled or not using RCP call from https://raw.githubusercontent.com/SecureAuthCorp/impacket/master/examples/rpcdump.pymain
mpgn
GitHub
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# https://raw.githubusercontent.com/SecureAuthCorp/impacket/master/examples/rpcdump.py
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from impacket.examples import logger
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from impacket import uuid, version
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from impacket.dcerpc.v5 import transport, epm
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from impacket.dcerpc.v5.rpch import RPC_PROXY_INVALID_RPC_PORT_ERR, \
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RPC_PROXY_CONN_A1_0X6BA_ERR, RPC_PROXY_CONN_A1_404_ERR, \
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RPC_PROXY_RPC_OUT_DATA_404_ERR
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KNOWN_PROTOCOLS = {
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135: {'bindstr': r'ncacn_ip_tcp:%s[135]'},
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445: {'bindstr': r'ncacn_np:%s[\pipe\epmapper]'},
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}
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class CMEModule:
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'''
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For printnightmare: detect if print spooler is enabled or not. Then use @cube0x0's project https://github.com/cube0x0/CVE-2021-1675 or Mimikatz from Benjamin Delpy
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Module by @mpgn_x64
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'''
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name = 'spooler'
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description = 'Detect if print spooler is enabled or not'
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supported_protocols = ['smb']
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opsec_safe= True
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multiple_hosts = True
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def options(self, context, module_options):
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self.port = 135
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if 'PORT' in module_options:
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self.port = int(module_options['PORT'])
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def on_login(self, context, connection):
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entries = []
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lmhash = getattr(connection, "lmhash", "")
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nthash = getattr(connection, "nthash", "")
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self.__stringbinding = KNOWN_PROTOCOLS[self.port]['bindstr'] % connection.host
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logging.debug('StringBinding %s' % self.__stringbinding)
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rpctransport = transport.DCERPCTransportFactory(self.__stringbinding)
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rpctransport.set_credentials(connection.username, connection.password, connection.domain, lmhash, nthash)
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rpctransport.setRemoteHost(connection.host)
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rpctransport.set_dport(self.port)
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try:
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entries = self.__fetchList(rpctransport)
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except Exception as e:
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error_text = 'Protocol failed: %s' % e
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logging.critical(error_text)
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if RPC_PROXY_INVALID_RPC_PORT_ERR in error_text or \
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RPC_PROXY_RPC_OUT_DATA_404_ERR in error_text or \
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RPC_PROXY_CONN_A1_404_ERR in error_text or \
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RPC_PROXY_CONN_A1_0X6BA_ERR in error_text:
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logging.critical("This usually means the target does not allow "
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"to connect to its epmapper using RpcProxy.")
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return
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# Display results.
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endpoints = {}
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# Let's groups the UUIDS
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for entry in entries:
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binding = epm.PrintStringBinding(entry['tower']['Floors'])
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tmpUUID = str(entry['tower']['Floors'][0])
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if (tmpUUID in endpoints) is not True:
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endpoints[tmpUUID] = {}
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endpoints[tmpUUID]['Bindings'] = list()
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if uuid.uuidtup_to_bin(uuid.string_to_uuidtup(tmpUUID))[:18] in epm.KNOWN_UUIDS:
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endpoints[tmpUUID]['EXE'] = epm.KNOWN_UUIDS[uuid.uuidtup_to_bin(uuid.string_to_uuidtup(tmpUUID))[:18]]
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else:
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endpoints[tmpUUID]['EXE'] = 'N/A'
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endpoints[tmpUUID]['annotation'] = entry['annotation'][:-1].decode('utf-8')
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endpoints[tmpUUID]['Bindings'].append(binding)
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if tmpUUID[:36] in epm.KNOWN_PROTOCOLS:
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endpoints[tmpUUID]['Protocol'] = epm.KNOWN_PROTOCOLS[tmpUUID[:36]]
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else:
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endpoints[tmpUUID]['Protocol'] = "N/A"
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for endpoint in list(endpoints.keys()):
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if "MS-RPRN" in endpoints[endpoint]['Protocol']:
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logging.debug("Protocol: %s " % endpoints[endpoint]['Protocol'])
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logging.debug("Provider: %s " % endpoints[endpoint]['EXE'])
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logging.debug("UUID : %s %s" % (endpoint, endpoints[endpoint]['annotation']))
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logging.debug("Bindings: ")
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for binding in endpoints[endpoint]['Bindings']:
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logging.debug(" %s" % binding)
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logging.debug("")
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context.log.highlight('Spooler service enabled')
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break
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if entries:
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num = len(entries)
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if 1 == num:
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logging.info('Received one endpoint.')
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else:
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logging.info('Received %d endpoints.' % num)
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else:
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logging.info('No endpoints found.')
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def __fetchList(self, rpctransport):
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dce = rpctransport.get_dce_rpc()
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dce.connect()
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resp = epm.hept_lookup(None, dce=dce)
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dce.disconnect()
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return resp
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