110 lines
3.9 KiB
Python
110 lines
3.9 KiB
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
from impacket.ldap import ldapasn1 as ldapasn1_impacket
|
|
from impacket.ldap import ldap as ldap_impacket
|
|
from math import fabs
|
|
import re
|
|
|
|
|
|
class NXCModule:
|
|
'''
|
|
Created by fplazar and wanetty
|
|
Module by @gm_eduard and @ferranplaza
|
|
Based on: https://github.com/juliourena/CrackMapExec/blob/master/cme/modules/get_description.py
|
|
'''
|
|
|
|
name = 'pso'
|
|
description = "Query to get PSO from LDAP"
|
|
supported_protocols = ['ldap']
|
|
opsec_safe = True
|
|
multiple_hosts = True
|
|
|
|
pso_fields = [
|
|
"cn",
|
|
"msDS-PasswordReversibleEncryptionEnabled",
|
|
"msDS-PasswordSettingsPrecedence",
|
|
"msDS-MinimumPasswordLength",
|
|
"msDS-PasswordHistoryLength",
|
|
"msDS-PasswordComplexityEnabled",
|
|
"msDS-LockoutObservationWindow",
|
|
"msDS-LockoutDuration",
|
|
"msDS-LockoutThreshold",
|
|
"msDS-MinimumPasswordAge",
|
|
"msDS-MaximumPasswordAge",
|
|
"msDS-PSOAppliesTo",
|
|
]
|
|
|
|
def options(self, context, module_options):
|
|
'''
|
|
No options available.
|
|
'''
|
|
pass
|
|
|
|
def convert_time_field(self, field, value):
|
|
time_fields = {
|
|
"msDS-LockoutObservationWindow": (60, "mins"),
|
|
"msDS-MinimumPasswordAge": (86400, "days"),
|
|
"msDS-MaximumPasswordAge": (86400, "days"),
|
|
"msDS-LockoutDuration": (60, "mins")
|
|
}
|
|
|
|
if field in time_fields.keys():
|
|
value = f"{int((fabs(float(value)) / (10000000 * time_fields[field][0])))} {time_fields[field][1]}"
|
|
|
|
return value
|
|
|
|
def on_login(self, context, connection):
|
|
'''Concurrent. Required if on_admin_login is not present. This gets called on each authenticated connection'''
|
|
# Building the search filter
|
|
searchFilter = "(objectClass=msDS-PasswordSettings)"
|
|
|
|
try:
|
|
context.log.debug('Search Filter=%s' % searchFilter)
|
|
resp = connection.ldapConnection.search(searchFilter=searchFilter,
|
|
attributes=self.pso_fields,
|
|
sizeLimit=0)
|
|
except ldap_impacket.LDAPSearchError as e:
|
|
if e.getErrorString().find('sizeLimitExceeded') >= 0:
|
|
context.log.debug('sizeLimitExceeded exception caught, giving up and processing the data received')
|
|
# We reached the sizeLimit, process the answers we have already and that's it. Until we implement
|
|
# paged queries
|
|
resp = e.getAnswers()
|
|
pass
|
|
else:
|
|
logging.debug(e)
|
|
return False
|
|
|
|
pso_list = []
|
|
|
|
context.log.debug('Total of records returned %d' % len(resp))
|
|
for item in resp:
|
|
if isinstance(item, ldapasn1_impacket.SearchResultEntry) is not True:
|
|
continue
|
|
|
|
pso_info = {}
|
|
|
|
try:
|
|
for attribute in item['attributes']:
|
|
attr_name = str(attribute['type'])
|
|
if attr_name in self.pso_fields:
|
|
pso_info[attr_name] = attribute['vals'][0]._value.decode('utf-8')
|
|
|
|
pso_list.append(pso_info)
|
|
|
|
except Exception as e:
|
|
context.log.debug("Exception:", exc_info=True)
|
|
context.log.debug('Skipping item, cannot process due to error %s' % str(e))
|
|
pass
|
|
if len(pso_list) > 0:
|
|
context.log.success('Password Settings Objects (PSO) found:')
|
|
for pso in pso_list:
|
|
for field in self.pso_fields:
|
|
if field in pso:
|
|
value = self.convert_time_field(field, pso[field])
|
|
context.log.highlight(u'{}: {}'.format(field, value))
|
|
context.log.highlight('-----')
|
|
|
|
else:
|
|
context.log.info('No Password Settings Objects (PSO) found.')
|