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ldaphelper.py
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#!/usr/bin/env python3
from ldap3 import Connection, Server, ANONYMOUS, SIMPLE, SYNC, ASYNC, KERBEROS
from ldap3 import Server, Connection, SAFE_SYNC, SASL, GSSAPI, DSA, SUBTREE, NTLM
from subprocess import Popen, PIPE
import logging
import re
logger = logging.getLogger('rSMBi')
class LDAPHelper():
def __init__(self, options):
self.options = options
def kerberosAuth(self):
userid = self.options.username
password = self.options.password
realm = (self.options.domain).upper()
kinit = '/usr/bin/kinit'
kinit_args = [kinit, '%s@%s' % (userid, realm)]
kinit = Popen(kinit_args, stdin=PIPE, stdout=PIPE, stderr=PIPE)
kinit.communicate(input="{}\n".format(password).encode("utf-8"))
kinit.wait()
def retrieveComputerObjects(self):
server = Server(self.options.dc_ip, get_info=DSA)
authstring = self.options.username + \
'@' + (self.options.domain).upper()
try:
conn = Connection(server, authstring, client_strategy=SAFE_SYNC,
auto_bind=True, authentication=SASL, sasl_mechanism=GSSAPI)
except Exception as e:
logger.error("exception in LDAP Connection")
logger.error(e)
dn = server.info.other["defaultNamingContext"][0]
# status, result, response, _ = conn.search(dn, '(objectClass=Computer)', attributes=['dNSHostName'], paged_size=2000)
status, result, response, _ = conn.search(
dn, '(&(objectCategory=Computer)(name=*))', search_scope=SUBTREE, attributes=['dNSHostName'], paged_size=500)
computerObjectsList = []
total_entries = len(response)
for co in response:
try:
computerObjectsList.append(
(co['attributes']['dNSHostName'])[0])
# print ((co['attributes']['dNSHostName'])[0])
except Exception as e:
logger.warning("Error retrieving dNSHostName for ")
logger.warning(co)
cookie = conn.result['controls']['1.2.840.113556.1.4.319']['value']['cookie']
while cookie:
status, result, response, _ = conn.search(
dn, '(&(objectCategory=Computer)(name=*))', search_scope=SUBTREE, attributes=['dNSHostName'], paged_size=500, paged_cookie=cookie)
total_entries += len(response)
for co in response:
try:
computerObjectsList.append(
(co['attributes']['dNSHostName'])[0])
except Exception as e:
logger.warning("Error retrieving dNSHostName for ")
logger.warning(co)
cookie = conn.result['controls']['1.2.840.113556.1.4.319']['value']['cookie']
logger.info("Retrieved computer objects: ")
logger.info(total_entries)
return computerObjectsList
def retrieveComputerObjectsNTLM(self):
server = Server(self.options.dc_ip, get_info=DSA)
authstring = self.options.domain+"\\"+self.options.username
try:
conn = Connection(server, authstring, password=self.options.password,
client_strategy=SAFE_SYNC, auto_bind=True, authentication=NTLM)
except Exception as e:
logger.error("exception in LDAP Connection [NTLM]")
logger.error(e)
dn = server.info.other["defaultNamingContext"][0]
status, result, response, _ = conn.search(
dn, '(&(objectCategory=Computer)(name=*))', search_scope=SUBTREE, attributes=['dNSHostName'], paged_size=500)
computerObjectsList = []
total_entries = len(response)
domain = ""
for co in response:
try:
computerObjectsList.append(
(co['attributes']['dNSHostName'])[0])
# print ((co['attributes']['dNSHostName'])[0])
except Exception as e:
try:
x = re.findall('DC=(?<==)(.*?)(?=(,|$))', co['dn'])
for domainsub in x:
domain += (domainsub[0]) + '.'
computerObjectsList.append(((co['dn']).split(',')[0]).split(
'=')[1] + '.' + domain[:len(domain)-1])
# print(((co['dn']).split(',')[0]).split(
# '=')[1] + '.' + domain[:len(domain)-1])
except Exception as e:
logger.warning("Error retrieving dNSHostName for ")
logger.warning(co)
domain = ""
cookie = conn.result['controls']['1.2.840.113556.1.4.319']['value']['cookie']
while cookie:
status, result, response, _ = conn.search(
dn, '(&(objectCategory=Computer)(name=*))', search_scope=SUBTREE, attributes=['dNSHostName'], paged_size=500, paged_cookie=cookie)
total_entries += len(response)
for co in response:
try:
computerObjectsList.append(
(co['attributes']['dNSHostName'])[0])
except Exception as e:
try:
x = re.findall('DC=(?<==)(.*?)(?=(,|$))', co['dn'])
for domainsub in x:
domain += (domainsub[0]) + '.'
computerObjectsList.append(((co['dn']).split(',')[0]).split(
'=')[1] + '.' + domain[:len(domain)-1])
# print(((co['dn']).split(',')[0]).split(
# '=')[1] + '.' + domain[:len(domain)-1])
except Exception as e:
logger.warning("Error retrieving dNSHostName for ")
logger.warning(co)
domain = ""
cookie = conn.result['controls']['1.2.840.113556.1.4.319']['value']['cookie']
logger.info("Retrieved computer objects: ")
logger.info(total_entries)
return computerObjectsList