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#!/usr/bin/python
# Copyright (c) 2003 CORE Security Technologies
#
# This software is provided under under a slightly modified version
# of the Apache Software License. See the accompanying LICENSE file
# for more information.
#
# $Id: rpcdump.py,v 1.2 2003/10/28 21:02:20 jkohen Exp $
#
# DCE/RPC endpoint mapper dumper.
#
# Author:
# Javier Kohen <jkohen@coresecurity.com>
#
# Reference for:
# DCE/RPC.
import socket
import string
import sys
import types
from impacket import uuid
from impacket.dcerpc import dcerpc_v4, dcerpc, transport, epm
class RPCDump:
KNOWN_PROTOCOLS = {
'139/SMB': (r'ncacn_np:%s[\pipe\epmapper]', 139),
'445/SMB': (r'ncacn_np:%s[\pipe\epmapper]', 445),
'135/TCP': (r'ncacn_ip_tcp:%s', 135),
'135/UDP': (r'ncadg_ip_udp:%s', 135),
'80/HTTP': (r'ncacn_http:%s', 80),
}
def __init__(self, protocols = None,
username = '', password = ''):
if not protocols:
protocols = RPCDump.KNOWN_PROTOCOLS.keys()
self.__username = username
self.__password = password
self.__protocols = protocols
def dump(self, addr):
"""Dumps the list of endpoints registered with the mapper
listening at addr. Addr is a valid host name or IP address in
string format.
"""
print 'Retrieving endpoint list from %s' % addr
# Try all requested protocols until one works.
entries = []
for protocol in self.__protocols:
protodef = RPCDump.KNOWN_PROTOCOLS[protocol]
port = protodef[1]
print "Trying protocol %s..." % protocol
stringbinding = protodef[0] % addr
rpctransport = transport.DCERPCTransportFactory(stringbinding)
rpctransport.set_dport(port)
if hasattr(rpctransport, 'set_credentials'):
# This method exists only for selected protocol sequences.
rpctransport.set_credentials(self.__username, self.__password)
try:
entries = self.__fetchList(rpctransport)
except Exception, e:
print 'Protocol failed: %s' % e
else:
# Got a response. No need for further iterations.
break
# Display results.
for entry in entries:
base = entry.getUUID()
if 'unknown' != entry.getProviderName():
print base + '/Provider:', entry.getProviderName()
print base + '/Version:', entry.getVersion()
if entry.getAnnotation():
print base + '/Annotation:', entry.getAnnotation()
objbase = base
if not entry.isZeroObjUUID():
objbase += '/' + entry.getObjUUID()
stringbinding = transport.DCERPCStringBindingCompose('', entry.getProtocol(), '', entry.getEndpoint())
print objbase + '/StringBindings:', stringbinding
if entries:
num = len(entries)
if 1 == num:
print 'Received one endpoint.'
else:
print 'Received %d endpoints.' % num
else:
print 'No endpoints found.'
def __fetchList(self, rpctransport):
# UDP only works over DCE/RPC version 4.
if isinstance(rpctransport, transport.UDPTransport):
dce = dcerpc_v4.DCERPC_v4(rpctransport)
else:
dce = dcerpc.DCERPC_v5(rpctransport)
entries = []
dce.connect()
dce.bind(epm.MSRPC_UUID_PORTMAP)
rpcepm = epm.DCERPCEpm(dce)
resp = rpcepm.portmap_dump()
while resp.get_entries_num() != 0:
rpc_handle = resp.get_handle()
ndrentry = resp.get_entry().get_entry()
sb = transport.DCERPCStringBinding(ndrentry.get_string_binding())
entry = epm.EpmEntry(uuid.bin_to_string(ndrentry.get_uuid()),
ndrentry.get_version(),
ndrentry.get_annotation(),
uuid.bin_to_string(ndrentry.get_objuuid()),
sb.get_protocol_sequence(),
sb.get_endpoint())
entries.append(entry)
## print str(entry)
resp = rpcepm.portmap_dump(rpc_handle)
dce.disconnect()
return entries
# Process command-line arguments.
if __name__ == '__main__':
if len(sys.argv) <= 1:
print "Usage: %s [username[:password]@]<address> [protocol list...]" % sys.argv[0]
print "Available protocols: %s" % RPCDump.KNOWN_PROTOCOLS.keys()
print "Username and password are only required for certain transports, eg. SMB."
sys.exit(1)
import re
username, password, address = re.compile('(?:([^@:]*)(?::([^@]*))?@)?(.*)').match(sys.argv[1]).groups('')
if len(sys.argv) > 2:
dumper = RPCDump(sys.argv[2:], username, password)
else:
dumper = RPCDump(username = username, password = password)
dumper.dump(address)
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