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net.py
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# This file is part of PywerView.
# PywerView is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# PywerView is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with PywerView. If not, see <http://www.gnu.org/licenses/>.
# Yannick Méheut [yannick (at) meheut (dot) org] - Copyright © 2023
from datetime import datetime, timedelta
from impacket.dcerpc.v5.ndr import NULL
from impacket.dcerpc.v5 import wkst, srvs, samr
from impacket.dcerpc.v5.samr import DCERPCSessionError
from impacket.dcerpc.v5.rpcrt import DCERPCException
from impacket.dcerpc.v5.dcom.wmi import WBEM_FLAG_FORWARD_ONLY
from bs4 import BeautifulSoup
from ldap3.utils.conv import escape_filter_chars
from ldap3.protocol.microsoft import security_descriptor_control
from ldap3.protocol.formatters.formatters import *
from impacket.ldap.ldaptypes import ACE, ACCESS_ALLOWED_OBJECT_ACE, ACCESS_MASK, LDAP_SID, SR_SECURITY_DESCRIPTOR
from pywerview.requester import LDAPRPCRequester
import pywerview.objects.adobjects as adobj
import pywerview.objects.rpcobjects as rpcobj
import pywerview.functions.misc
import pywerview.formatters as fmt
class NetRequester(LDAPRPCRequester):
@LDAPRPCRequester._ldap_connection_init
def get_adobject(self, queried_domain=str(), queried_sid=str(),
queried_name=str(), queried_sam_account_name=str(),
ads_path=str(), attributes=list(), custom_filter=str()):
for attr_desc, attr_value in (('objectSid', queried_sid), ('name', escape_filter_chars(queried_name)),
('samAccountName', escape_filter_chars(queried_sam_account_name))):
if attr_value:
object_filter = '(&({}={}){})'.format(attr_desc, attr_value, custom_filter)
break
else:
object_filter = '(&(name=*){})'.format(custom_filter)
return self._ldap_search(object_filter, adobj.ADObject, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_objectowner(self, queried_domain=str(), queried_sid=str(),
queried_name=str(), queried_sam_account_name=str(),
ads_path=str(), custom_filter=str(), resolve_sids=False):
for attr_desc, attr_value in (('objectSid', queried_sid), ('name', escape_filter_chars(queried_name)),
('samAccountName', escape_filter_chars(queried_sam_account_name))):
if attr_value:
object_filter = '(&({}={}){})'.format(attr_desc, attr_value, custom_filter)
break
else:
object_filter = '(&(name=*){})'.format(custom_filter)
attributes = ['ntsecuritydescriptor','distinguishedname']
# The control is used to get access to ntSecurityDescriptor with an
# unprivileged user, see https://stackoverflow.com/questions/40771503/selecting-the-ad-ntsecuritydescriptor-attribute-as-a-non-admin/40773088
# /!\ May break pagination from what I've read (see Stack Overflow answer)
controls = security_descriptor_control(criticality=True, sdflags=0x01)
objectowners_raw = self._ldap_search(object_filter, adobj.ADObject, attributes=attributes, controls=controls)
objectowners = list()
if resolve_sids:
sid_mapping = adobj.ADObject._well_known_sids.copy()
for objectowner in objectowners_raw:
# Sometimes, admins mess with objects, we skip if the object does not have ntsecuritydescriptor
if not objectowner.ntsecuritydescriptor:
self._logger.debug("Skipping an object because it does not have a ntsecuritydescriptor attributes")
continue
result = adobj.ObjectOwner(list())
sd = SR_SECURITY_DESCRIPTOR()
sd.fromString(objectowner.ntsecuritydescriptor)
sid = format_sid(sd['OwnerSid'].getData())
if resolve_sids:
try:
resolved_sid = sid_mapping[sid]
except KeyError:
self._logger.warning('SID ({}) is not a well known or already resolved SID'.format(sid))
try:
resolved_sid = self.get_adobject(queried_sid=sid, queried_domain=self._queried_domain,
attributes=['distinguishedname'])[0].distinguishedname
except IndexError:
self._logger.warning('We did not manage to resolve this SID ({}) against the DC'.format(sid))
resolved_sid = sid
finally:
sid_mapping[sid] = resolved_sid
else:
resolved_sid = sid
result.add_attributes({'distinguishedname': objectowner.distinguishedname})
result.add_attributes({'objectowner': resolved_sid})
objectowners.append(result)
return objectowners
@LDAPRPCRequester._ldap_connection_init
def get_netgmsa(self, queried_domain=str(), queried_sid=str(),
queried_name=str(), queried_sam_account_name=str(),
ads_path=str(), resolve_sids=False):
filter_objectclass = '(ObjectClass=msDS-GroupManagedServiceAccount)'
attributes = ['samaccountname', 'distinguishedname', 'objectsid', 'description',
'msds-managedpassword', 'msds-groupmsamembership', 'useraccountcontrol']
if not self._ldap_connection.server.ssl:
self._logger.warning('LDAP connection is not encrypted, we can\'t ask '\
'for msds-managedpassword, removing from list of attributes')
attributes.remove('msds-managedpassword')
for attr_desc, attr_value in (('objectSid', queried_sid), ('name', escape_filter_chars(queried_name)),
('samAccountName', escape_filter_chars(queried_sam_account_name))):
if attr_value:
object_filter = '(&({}={}){})'.format(attr_desc, attr_value, filter_objectclass)
break
else:
object_filter = '(&(name=*){})'.format(filter_objectclass)
gmsa = self._ldap_search(object_filter, adobj.GMSAAccount, attributes=attributes)
# In this loop, we resolve SID (if true) and we populate 'enabled' attribute
for i, adserviceaccount in enumerate(gmsa):
if resolve_sids:
results = list()
for sid in getattr(adserviceaccount, 'msds-groupmsamembership'):
try:
resolved_sid = self.get_adobject(queried_sid=sid, queried_domain=self._queried_domain,
attributes=['distinguishedname'])[0].distinguishedname
except IndexError:
self._logger.warning('We did not manage to resolve this SID ({}) against the DC'.format(sid))
resolved_sid = sid
results.append(resolved_sid)
gmsa[i].add_attributes({'msds-groupmsamembership': results})
gmsa[i].add_attributes({'Enabled': 'ACCOUNTDISABLE' not in adserviceaccount.useraccountcontrol})
gmsa[i]._attributes_dict.pop('useraccountcontrol')
return gmsa
@LDAPRPCRequester._ldap_connection_init
def get_netsmsa(self, queried_domain=str(), queried_sid=str(),
queried_name=str(), queried_sam_account_name=str(),
ads_path=str()):
filter_objectclass = '(ObjectClass=msDS-ManagedServiceAccount)'
attributes = ['samaccountname', 'distinguishedname', 'objectsid', 'description',
'msds-hostserviceaccountbl', 'useraccountcontrol']
for attr_desc, attr_value in (('objectSid', queried_sid), ('name', escape_filter_chars(queried_name)),
('samAccountName', escape_filter_chars(queried_sam_account_name))):
if attr_value:
object_filter = '(&({}={}){})'.format(attr_desc, attr_value, filter_objectclass)
break
else:
object_filter = '(&(name=*){})'.format(filter_objectclass)
smsas = self._ldap_search(object_filter, adobj.SMSAAccount, attributes=attributes)
# In this loop, we populate 'enabled' attribute
for i, adserviceaccount in enumerate(smsas):
smsas[i].add_attributes({'Enabled': 'ACCOUNTDISABLE' not in adserviceaccount.useraccountcontrol})
smsas[i]._attributes_dict.pop('useraccountcontrol')
return smsas
@LDAPRPCRequester._ldap_connection_init
def get_objectacl(self, queried_domain=str(), queried_sid=str(),
queried_name=str(), queried_sam_account_name=str(),
ads_path=str(), sacl=False, rights_filter=str(),
resolve_sids=False, resolve_guids=False, custom_filter=str()):
for attr_desc, attr_value in (('objectSid', queried_sid), ('name', escape_filter_chars(queried_name)),
('samAccountName', escape_filter_chars(queried_sam_account_name))):
if attr_value:
object_filter = '(&({}={}){})'.format(attr_desc, attr_value, custom_filter)
break
else:
object_filter = '(&(name=*){})'.format(custom_filter)
guid_map = dict()
# This works on a mono-domain forest, must be tested on a more complex one
if resolve_guids:
# Dirty fix to get base DN even if custom ADS path was given
len_base_dn = len(self._base_dn.split(','))
base_dn = ','.join(self._base_dn.split(',')[-len_base_dn:])
guid_map = {'{00000000-0000-0000-0000-000000000000}': 'All'}
for o in self.get_adobject(ads_path='CN=Schema,CN=Configuration,{}'.format(base_dn),
attributes=['name', 'schemaIDGUID'], custom_filter='(schemaIDGUID=*)'):
guid_map['{}'.format(format_uuid_le(o.schemaidguid))] = o.name
for o in self.get_adobject(ads_path='CN=Extended-Rights,CN=Configuration,{}'.format(base_dn),
attributes=['name', 'rightsGuid'], custom_filter='(objectClass=controlAccessRight)'):
guid_map['{{{}}}'.format(o.rightsguid.lower())] = o.name
self._base_dn = base_dn
attributes = ['distinguishedname', 'objectsid', 'ntsecuritydescriptor']
if sacl:
controls = list()
acl_type = 'Sacl'
else:
# The control is used to get access to ntSecurityDescriptor with an
# unprivileged user, see https://stackoverflow.com/questions/40771503/selecting-the-ad-ntsecuritydescriptor-attribute-as-a-non-admin/40773088
# /!\ May break pagination from what I've read (see Stack Overflow answer)
controls = security_descriptor_control(criticality=True, sdflags=0x07)
acl_type = 'Dacl'
security_descriptors = self._ldap_search(object_filter, adobj.ADObject,
attributes=attributes, controls=controls)
acl = list()
rights_to_guid = {'reset-password': '{00299570-246d-11d0-a768-00aa006e0529}',
'write-members': '{bf9679c0-0de6-11d0-a285-00aa003049e2}',
'allowed-to-authenticate':'{68b1d179-0d15-4d4f-ab71-46152e79a7bc}',
'all': '{00000000-0000-0000-0000-000000000000}'}
guid_filter = rights_to_guid.get(rights_filter, None)
if resolve_sids:
sid_mapping = adobj.ADObject._well_known_sids.copy()
for security_descriptor in security_descriptors:
sd = SR_SECURITY_DESCRIPTOR()
try:
sd.fromString(security_descriptor.ntsecuritydescriptor)
except TypeError:
continue
for ace in sd[acl_type]['Data']:
if guid_filter:
try:
object_type = format_uuid_le(ace['Ace']['ObjectType']) if ace['Ace']['ObjectType'] else '{00000000-0000-0000-0000-000000000000}'
except KeyError:
continue
if object_type != guid_filter:
continue
attributes = dict()
attributes['objectdn'] = security_descriptor.distinguishedname
attributes['objectsid'] = security_descriptor.objectsid
attributes['acetype'] = ace['TypeName']
attributes['binarysize'] = ace['AceSize']
attributes['aceflags'] = fmt.format_ace_flags(ace['AceFlags'])
attributes['accessmask'] = ace['Ace']['Mask']['Mask']
attributes['activedirectoryrights'] = fmt.format_ace_access_mask(ace['Ace']['Mask']['Mask'])
attributes['isinherited'] = bool(ace['AceFlags'] & 0x10)
attributes['securityidentifier'] = format_sid(ace['Ace']['Sid'].getData())
if resolve_sids:
converted_sid = attributes['securityidentifier']
try:
resolved_sid = sid_mapping[converted_sid]
except KeyError:
try:
resolved_sid = self.get_adobject(queried_sid=converted_sid,
queried_domain=self._queried_domain, ads_path=self._base_dn, attributes=['distinguishedname'])[0]
resolved_sid = resolved_sid.distinguishedname
except IndexError:
self._logger.warning('We did not manage to resolve this SID ({}) against the DC'.format(converted_sid))
resolved_sid = attributes['securityidentifier']
finally:
sid_mapping[converted_sid] = resolved_sid
attributes['securityidentifier'] = resolved_sid
try:
attributes['objectaceflags'] = fmt.format_object_ace_flags(ace['Ace']['Flags'])
except KeyError:
pass
try:
attributes['objectacetype'] = format_uuid_le(ace['Ace']['ObjectType']) if ace['Ace']['ObjectType'] else '{00000000-0000-0000-0000-000000000000}'
attributes['objectacetype'] = guid_map[attributes['objectacetype']]
except KeyError:
pass
try:
attributes['inheritedobjectacetype'] = format_uuid_le(ace['Ace']['InheritedObjectType']) if ace['Ace']['InheritedObjectType'] else '{00000000-0000-0000-0000-000000000000}'
attributes['inheritedobjectacetype'] = guid_map[attributes['inheritedobjectacetype']]
except KeyError:
pass
acl.append(adobj.ACE(attributes))
return acl
@LDAPRPCRequester._ldap_connection_init
def get_netuser(self, queried_username=str(), queried_domain=str(),
ads_path=str(), admin_count=False, spn=False,
unconstrained=False, allow_delegation=False,
preauth_notreq=False,
custom_filter=str(), attributes=[]):
if unconstrained:
custom_filter += '(userAccountControl:1.2.840.113556.1.4.803:=524288)'
if allow_delegation:
custom_filter += '(!(userAccountControl:1.2.840.113556.1.4.803:=1048574))'
if admin_count:
custom_filter += '(admincount=1)'
# LDAP filter from https://www.harmj0y.net/blog/activedirectory/roasting-as-reps/
if preauth_notreq:
custom_filter += '(userAccountControl:1.2.840.113556.1.4.803:=4194304)'
user_search_filter = '(samAccountType=805306368){}'.format(custom_filter)
if queried_username:
user_search_filter += '(samAccountName={})'.format(queried_username)
elif spn:
user_search_filter += '(servicePrincipalName=*)'
user_search_filter = '(&{})'.format(user_search_filter)
return self._ldap_search(user_search_filter, adobj.User, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_netgroup(self, queried_groupname='*', queried_sid=str(),
queried_username=str(), queried_domain=str(),
ads_path=str(), admin_count=False, full_data=False,
custom_filter=str()):
# RFC 4515, section 3
# However if we escape *, we can no longer use wildcard within `--groupname`
if not '*' in queried_groupname:
queried_groupname = escape_filter_chars(queried_groupname)
else:
self._logger.warning('"*" detected in "{}", if it also contains "(",")" or "\\", '
'script will probably crash ("invalid filter"). '
'Don\'t use wildcard with these characters'.format(queried_groupname))
if queried_username:
self._logger.debug('Queried username = {}'.format(queried_username))
results = list()
sam_account_name_to_resolve = [queried_username]
first_run = True
while sam_account_name_to_resolve:
sam_account_name = escape_filter_chars(sam_account_name_to_resolve.pop(0))
if first_run:
first_run = False
if admin_count:
custom_filter = '(&{}(admincount=1))'.format(custom_filter)
objects = self.get_adobject(queried_sam_account_name=sam_account_name,
queried_domain=queried_domain,
ads_path=ads_path, custom_filter=custom_filter)
objects += self.get_adobject(queried_name=sam_account_name,
queried_domain=queried_domain,
ads_path=ads_path, custom_filter=custom_filter)
else:
objects = self.get_adobject(queried_sam_account_name=sam_account_name,
queried_domain=queried_domain)
objects += self.get_adobject(queried_name=sam_account_name,
queried_domain=queried_domain)
for obj in objects:
try:
if not isinstance(obj.memberof, list):
obj.memberof = [obj.memberof]
except AttributeError:
continue
for group_dn in obj.memberof:
group_sam_account_name = group_dn.split(',')[0].split('=')[1]
if not group_sam_account_name in results:
results.append(group_sam_account_name)
sam_account_name_to_resolve.append(group_sam_account_name)
final_results = list()
for group_sam_account_name in results:
obj_member_of = adobj.Group(list())
obj_member_of._attributes_dict['samaccountname'] = group_sam_account_name
final_results.append(obj_member_of)
return final_results
else:
if admin_count:
custom_filter += '(admincount=1)'
group_search_filter = custom_filter
group_search_filter += '(objectCategory=group)'
if queried_sid:
self._logger.debug('Queried SID = {}'.format(queried_username))
group_search_filter += '(objectSid={})'.format(queried_sid)
elif queried_groupname:
self._logger.debug('Queried groupname = {}'.format(queried_groupname))
group_search_filter += '(name={})'.format(queried_groupname)
if full_data:
attributes=list()
else:
attributes=['samaccountname']
group_search_filter = '(&{})'.format(group_search_filter)
return self._ldap_search(group_search_filter, adobj.Group, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_netcomputer(self, queried_computername=str(), queried_spn=str(),
queried_os=str(), queried_sp=str(), queried_domain=str(), ads_path=str(),
printers=False, unconstrained=False, laps_passwords=False, pre_created=False,
ping=False, full_data=False, custom_filter=str(), attributes=[]):
if unconstrained:
custom_filter += '(userAccountControl:1.2.840.113556.1.4.803:=524288)'
if printers:
custom_filter += '(objectCategory=printQueue)'
if laps_passwords:
custom_filter += '(ms-mcs-AdmPwd=*)'
if pre_created:
custom_filter += '(userAccountControl:1.2.840.113556.1.4.803:=4128)'
computer_search_filter = '(samAccountType=805306369){}'.format(custom_filter)
for (attr_desc, attr_value) in (('servicePrincipalName', queried_spn),
('operatingSystem', queried_os), ('operatingsystemservicepack', queried_sp),
('dnsHostName', queried_computername)):
if attr_value:
computer_search_filter += '({}={})'.format(attr_desc, attr_value)
if full_data:
attributes=list()
else:
if not attributes:
attributes=['samaccountname', 'dnsHostName']
if laps_passwords:
attributes.append('ms-mcs-AdmPwd')
computer_search_filter = '(&{})'.format(computer_search_filter)
return self._ldap_search(computer_search_filter, adobj.Computer, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_netdomaincontroller(self, queried_domain=str()):
domain_controller_filter = '(userAccountControl:1.2.840.113556.1.4.803:=8192)'
return self.get_netcomputer(queried_domain=queried_domain, full_data=True,
custom_filter=domain_controller_filter)
@LDAPRPCRequester._ldap_connection_init
def get_netfileserver(self, queried_domain=str(), target_users=list()):
def split_path(path):
split_path = path.split('\\')
if len(split_path) >= 3:
return split_path[2]
file_server_attributes = ['homedirectory', 'scriptpath', 'profilepath']
results = set()
if target_users:
users = list()
for target_user in target_users:
users += self.get_netuser(target_user, queried_domain,
attributes=file_server_attributes)
else:
users = self.get_netuser(queried_domain=queried_domain,
attributes=file_server_attributes)
for user in users:
for full_path in (user.homedirectory, user.scriptpath, user.profilepath):
if not full_path:
continue
path = split_path(full_path)
if path:
results.add(path)
final_results = list()
for file_server_name in results:
attributes = dict()
attributes['dnshostname'] = file_server_name
final_results.append(adobj.FileServer(attributes))
return final_results
@LDAPRPCRequester._ldap_connection_init
def get_dfsshare(self, version=['v1', 'v2'], queried_domain=str(), ads_path=str()):
def _get_dfssharev1():
dfs_search_filter = '(objectClass=fTDfs)'
intermediate_results = self._ldap_search(dfs_search_filter, adobj.ADObject,
attributes=['remoteservername', 'name'])
results = list()
for dfs in intermediate_results:
for remote_server in dfs.remoteservername:
remote_server = str(remote_server)
if '\\' in remote_server:
attributes = {'name': dfs.name,
'remoteservername': remote_server.split('\\')[2]}
results.append(adobj.DFS(attributes))
return results
def _get_dfssharev2():
dfs_search_filter = '(objectClass=msDFS-Linkv2)'
intermediate_results = self._ldap_search(dfs_search_filter, adobj.ADObject,
attributes=['msdfs-linkpathv2','msDFS-TargetListv2'])
results = list()
for dfs in intermediate_results:
attributes = list()
share_name = getattr(dfs, 'msdfs-linkpathv2')
xml_target_list = getattr(dfs, 'msdfs-targetlistv2')[2:].decode('utf-16le')
soup_target_list = BeautifulSoup(xml_target_list, 'xml')
for target in soup_target_list.targets.contents:
if '\\' in target.string:
server_name, dfs_root = target.string.split('\\')[2:4]
attributes = {'name': '{}{}'.format(dfs_root, share_name),
'remoteservername': server_name}
results.append(adobj.DFS(attributes))
return results
version_to_function = {'v1': _get_dfssharev1, 'v2': _get_dfssharev2}
results = list()
for v in version:
results += version_to_function[v]()
return results
@LDAPRPCRequester._ldap_connection_init
def get_netou(self, queried_domain=str(), queried_ouname='*',
queried_guid=str(), ads_path=str(), full_data=False):
ou_search_filter = '(objectCategory=organizationalUnit)'
if queried_ouname:
ou_search_filter += '(name={})'.format(queried_ouname)
if queried_guid:
ou_search_filter += '(gplink=*{}*)'.format(queried_guid)
if full_data:
attributes = list()
else:
attributes = ['distinguishedName']
ou_search_filter = '(&{})'.format(ou_search_filter)
return self._ldap_search(ou_search_filter, adobj.OU, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_netsite(self, queried_domain=str(), queried_sitename=str(),
queried_guid=str(), ads_path=str(), ads_prefix=str(),
full_data=False):
site_search_filter = '(objectCategory=site)'
if queried_sitename:
site_search_filter += '(name={})'.format(queried_sitename)
if queried_guid:
site_search_filter += '(gplink=*{}*)'.format(queried_guid)
if full_data:
attributes = list()
else:
attributes = ['name']
site_search_filter = '(&{})'.format(site_search_filter)
return self._ldap_search(site_search_filter, adobj.Site, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_netsubnet(self, queried_domain=str(), queried_sitename=str(),
ads_path=str(), ads_prefix=str(), full_data=False):
subnet_search_filter = '(objectCategory=subnet)'
if queried_sitename:
if not queried_sitename.endswith('*'):
queried_sitename += '*'
subnet_search_filter += '(siteobject=*CN={})'.format(queried_sitename)
if full_data:
attributes = list()
else:
attributes = ['name', 'siteobject']
subnet_search_filter = '(&{})'.format(subnet_search_filter)
return self._ldap_search(subnet_search_filter, adobj.Subnet, attributes=attributes)
@LDAPRPCRequester._ldap_connection_init
def get_netgroupmember(self, queried_groupname=str(), queried_sid=str(),
queried_domain=str(), ads_path=str(), recurse=False,
use_matching_rule=False, full_data=False,
custom_filter=str()):
def _get_members(_groupname=str(), _sid=str()):
try:
# `--groupname` option is supplied
if _groupname:
self._logger.debug('Queried groupname = {}'.format(queried_groupname))
groups = self.get_netgroup(queried_groupname=_groupname,
queried_domain=self._queried_domain,
full_data=True)
# `--groupname` option is missing, falling back to the "Domain Admins"
else:
self._logger.debug('No groupname provided, falling back to the "Domain Admins"'.format(queried_groupname))
if _sid:
queried_sid = _sid
else:
# Logic extract from pywerview.functions.Misc get_domainsid to save object creation
# LDAP filter to extract DC
domain_controller_filter = '(userAccountControl:1.2.840.113556.1.4.803:=8192)'
domain_controllers = self.get_netcomputer(queried_domain=queried_domain, custom_filter=domain_controller_filter,
attributes=['objectsid'])
if domain_controllers:
primary_dc = domain_controllers[0]
domain_sid = primary_dc.objectsid
# we need to retrieve the domain sid from the controller sid
domain_sid = '-'.join(domain_sid.split('-')[:-1])
queried_sid = domain_sid + '-512'
self._logger.debug('Found Domains Admins SID = {}'.format(queried_sid))
else:
self._logger.critical('We did not manage to retrieve domain controller, please specify a group name')
return list()
groups = self.get_netgroup(queried_sid=queried_sid,
queried_domain=self._queried_domain,
full_data=True)
except IndexError:
raise ValueError('The group {} was not found'.format(_groupname))
final_members = list()
for group in groups:
members = list()
if recurse and use_matching_rule:
group_memberof_filter = '(&(samAccountType=805306368)(memberof:1.2.840.113556.1.4.1941:={}){})'.format(group.distinguishedname, custom_filter)
members = self.get_netuser(custom_filter=group_memberof_filter,
queried_domain=self._queried_domain)
else:
# TODO: range cycling
try:
for member in group.member:
# RFC 4515, section 3
self._logger.warning('Member name = "{}" will be escaped'.format(member))
member = escape_filter_chars(member, encoding='utf-8')
dn_filter = '(distinguishedname={}){}'.format(member, custom_filter)
members += self.get_adobject(custom_filter=dn_filter, queried_domain=self._queried_domain)
# The group doesn't have any members
except AttributeError:
self._logger.debug('The group doesn\'t have any members')
continue
for member in members:
if full_data:
final_member = member
else:
final_member = adobj.ADObject(list())
member_dn = member.distinguishedname
try:
member_domain = member_dn[member_dn.index('DC='):].replace('DC=', '').replace(',', '.')
except IndexError:
self._logger.warning('Exception was raised while handling member_dn, falling back to empty string')
member_domain = str()
# https://serverfault.com/questions/788888/what-does-an-alias-group-means-in-sid-context
is_group = (member.samaccounttype == 'GROUP_OBJECT') or (member.samaccounttype == 'ALIAS_OBJECT')
attributes = dict()
if queried_domain:
attributes['groupdomain'] = queried_domain
else:
attributes['groupdomain'] = self._queried_domain
attributes['groupname'] = group.name
attributes['membername'] = member.samaccountname
attributes['memberdomain'] = member_domain
if is_group:
attributes['useraccountcontrol'] = str()
self._logger.debug('{0} is a {1}, ignoring the useraccountcontrol'.format(member.samaccountname, member.samaccounttype))
else:
attributes['useraccountcontrol'] = member.useraccountcontrol
attributes['isgroup'] = is_group
attributes['memberdn'] = member_dn
attributes['objectsid'] = member.objectsid
final_member.add_attributes(attributes)
final_members.append(final_member)
return final_members
results = list()
groups_to_process = [(queried_groupname, queried_sid)]
while groups_to_process:
groupname, sid = groups_to_process.pop(0)
members = _get_members(groupname, sid)
for member in members:
results.append(member)
if (recurse and (not use_matching_rule) and member.isgroup and member.membername):
groups_to_process.append((member.membername, str()))
return results
@LDAPRPCRequester._ldap_connection_init
def get_netdomaintrust(self, queried_domain, full_data=False):
if full_data:
attributes=list()
else:
attributes=['trustpartner', 'trustdirection',
'whencreated', 'whenchanged',
'trusttype', 'trustattributes']
trust_search_filter = '(&(objectClass=trustedDomain))'
return self._ldap_search(trust_search_filter, adobj.Trust, attributes=attributes)
@LDAPRPCRequester._rpc_connection_init(r'\srvsvc')
def get_netsession(self):
try:
resp = srvs.hNetrSessionEnum(self._rpc_connection, '\x00', NULL, 10)
except DCERPCException:
return list()
results = list()
for session in resp['InfoStruct']['SessionInfo']['Level10']['Buffer']:
results.append(rpcobj.Session(session))
return results
@LDAPRPCRequester._rpc_connection_init(r'\srvsvc')
def get_netshare(self):
resp = srvs.hNetrShareEnum(self._rpc_connection, 1)
results = list()
for share in resp['InfoStruct']['ShareInfo']['Level1']['Buffer']:
results.append(rpcobj.Share(share))
return results
@LDAPRPCRequester._rpc_connection_init(r'\srvsvc')
def get_localdisks(self):
resp = srvs.hNetrServerDiskEnum(self._rpc_connection, 0)
results = list()
for disk in resp['DiskInfoStruct']['Buffer']:
if disk['Disk'] != '\x00':
results.append(rpcobj.Disk(disk))
return results
@LDAPRPCRequester._rpc_connection_init(r'\samr')
def get_netdomain(self):
resp = samr.hSamrConnect(self._rpc_connection)
server_handle = resp['ServerHandle']
# We first list every domain in the SAM
resp = samr.hSamrEnumerateDomainsInSamServer(self._rpc_connection, server_handle)
results = list()
for domain in resp['Buffer']['Buffer']:
results.append(domain['Name'])
return results
@LDAPRPCRequester._rpc_connection_init(r'\wkssvc')
def get_netloggedon(self):
try:
resp = wkst.hNetrWkstaUserEnum(self._rpc_connection, 1)
except DCERPCException:
return list()
results = list()
for wksta_user in resp['UserInfo']['WkstaUserInfo']['Level1']['Buffer']:
results.append(rpcobj.WkstaUser(wksta_user))
return results
# TODO: if self._target_computer == self._domain_controller, check that
# self._domain_controller is indeed a domain controller
@LDAPRPCRequester._ldap_connection_init
@LDAPRPCRequester._rpc_connection_init(r'\samr')
def get_netlocalgroup(self, queried_groupname=str(), list_groups=False,
recurse=False):
from impacket.nt_errors import STATUS_MORE_ENTRIES
results = list()
resp = samr.hSamrConnect(self._rpc_connection)
server_handle = resp['ServerHandle']
# We first list every domain in the SAM
resp = samr.hSamrEnumerateDomainsInSamServer(self._rpc_connection, server_handle)
domains = resp['Buffer']['Buffer']
domain_handles = dict()
for local_domain in domains:
resp = samr.hSamrLookupDomainInSamServer(self._rpc_connection, server_handle, local_domain['Name'])
domain_sid = 'S-1-5-{}'.format('-'.join(str(x) for x in resp['DomainId']['SubAuthority']))
resp = samr.hSamrOpenDomain(self._rpc_connection, serverHandle=server_handle, domainId=resp['DomainId'])
domain_handles[domain_sid] = resp['DomainHandle']
# If we list the groups
if list_groups:
# We browse every domain
for domain_sid, domain_handle in domain_handles.items():
# We enumerate local groups in every domain
enumeration_context = 0
groups = list()
while True:
resp = samr.hSamrEnumerateAliasesInDomain(self._rpc_connection, domain_handle,
enumerationContext=enumeration_context)
groups += resp['Buffer']['Buffer']
enumeration_context = resp['EnumerationContext']
if resp['ErrorCode'] != STATUS_MORE_ENTRIES:
break
# We get information on every group
for group in groups:
resp = samr.hSamrRidToSid(self._rpc_connection, domain_handle, rid=group['RelativeId'])
sid = 'S-1-5-{}'.format('-'.join(str(x) for x in resp['Sid']['SubAuthority']))
resp = samr.hSamrOpenAlias(self._rpc_connection, domain_handle, aliasId=group['RelativeId'])
alias_handle = resp['AliasHandle']
resp = samr.hSamrQueryInformationAlias(self._rpc_connection, alias_handle)
final_group = rpcobj.Group(resp['Buffer']['General'])
final_group.add_attributes({'server': self._target_computer, 'sid': sid})
results.append(final_group)
samr.hSamrCloseHandle(self._rpc_connection, alias_handle)
samr.hSamrCloseHandle(self._rpc_connection, domain_handle)
# If we query a group
else:
queried_group_rid = None
queried_group_domain_handle = None
# If the user is looking for a particular group
if queried_groupname:
# We look for it in every domain
for _, domain_handle in domain_handles.items():
try:
resp = samr.hSamrLookupNamesInDomain(self._rpc_connection, domain_handle, [queried_groupname])
queried_group_rid = resp['RelativeIds']['Element'][0]['Data']
queried_group_domain_handle = domain_handle
break
except (DCERPCSessionError, KeyError, IndexError):
continue
else:
raise ValueError('The group \'{}\' was not found on the target server'.format(queried_groupname))
# Otherwise, we look for the local Administrators group
else:
queried_group_rid = 544
resp = samr.hSamrLookupDomainInSamServer(self._rpc_connection, server_handle, 'BUILTIN')
resp = samr.hSamrOpenDomain(self._rpc_connection, serverHandle=server_handle, domainId=resp['DomainId'])
queried_group_domain_handle = resp['DomainHandle']
# We get a handle on the group, and list its members
try:
group = samr.hSamrOpenAlias(self._rpc_connection, queried_group_domain_handle, aliasId=queried_group_rid)
resp = samr.hSamrGetMembersInAlias(self._rpc_connection, group['AliasHandle'])
except DCERPCSessionError:
raise ValueError('The name \'{}\' is not a valid group on the target server'.format(queried_groupname))
# For every user, we look for information in every local domain
for member in resp['Members']['Sids']:
attributes = dict()
member_rid = member['SidPointer']['SubAuthority'][-1]
member_sid = 'S-1-5-{}'.format('-'.join(str(x) for x in member['SidPointer']['SubAuthority']))
attributes['server'] = self._target_computer
attributes['sid'] = member_sid
for domain_sid, domain_handle in domain_handles.items():
# We've found a local member
if member_sid.startswith(domain_sid):
attributes['isdomain'] = False
resp = samr.hSamrQueryInformationDomain(self._rpc_connection, domain_handle)
member_domain = resp['Buffer']['General2']['I1']['DomainName']
try:
resp = samr.hSamrOpenUser(self._rpc_connection, domain_handle, userId=member_rid)
member_handle = resp['UserHandle']
attributes['isgroup'] = False
resp = samr.hSamrQueryInformationUser(self._rpc_connection, member_handle)
attributes['name'] = '{}\\{}'.format(member_domain, resp['Buffer']['General']['UserName'])
except DCERPCSessionError:
resp = samr.hSamrOpenAlias(self._rpc_connection, domain_handle, aliasId=member_rid)
member_handle = resp['AliasHandle']
attributes['isgroup'] = True
resp = samr.hSamrQueryInformationAlias(self._rpc_connection, member_handle)
attributes['name'] = '{}\\{}'.format(member_domain, resp['Buffer']['General']['Name'])
attributes['lastlogon'] = str()
break
# It's a domain member
else:
attributes['isdomain'] = True
if self._ldap_connection is not None:
try:
ad_object = self.get_adobject(queried_sid=member_sid)[0]
member_dn = ad_object.distinguishedname
member_domain = member_dn[member_dn.index('DC='):].replace('DC=', '').replace(',', '.')
try:
attributes['name'] = '{}\\{}'.format(member_domain, ad_object.samaccountname)
except AttributeError:
# Here, the member is a foreign security principal
# TODO: resolve it properly
self._logger.warning('The member is a foreign security principal, SID will not be resolved')
attributes['name'] = '{}\\{}'.format(member_domain, ad_object.objectsid)
attributes['isgroup'] = 'group' in ad_object.objectclass
try:
attributes['lastlogon'] = ad_object.lastlogon
except AttributeError:
self._logger.warning('lastlogon is not set, falling back to empty string')
attributes['lastlogon'] = str()
except IndexError:
# We did not manage to resolve this SID against the DC
self._logger.warning('We did not manage to resolve this SID ({}) against the DC'.format(member_sid))
attributes['isdomain'] = False
attributes['isgroup'] = False
attributes['name'] = attributes['sid']
attributes['lastlogon'] = str()
else:
attributes['isgroup'] = False
attributes['name'] = str()
attributes['lastlogon'] = str()
results.append(rpcobj.RPCObject(attributes))
# If we recurse and the member is a domain group, we query every member
# TODO: implement check on self._domain_controller here?
if self._ldap_connection and self._domain_controller and recurse and attributes['isdomain'] and attributes['isgroup']:
for domain_member in self.get_netgroupmember(full_data=True, recurse=True, queried_sid=attributes['sid']):
domain_member_attributes = dict()
domain_member_attributes['isdomain'] = True
member_dn = domain_member.distinguishedname
member_domain = member_dn[member_dn.index('DC='):].replace('DC=', '').replace(',', '.')
domain_member_attributes['name'] = '{}\\{}'.format(member_domain, domain_member.samaccountname)
domain_member_attributes['isgroup'] = domain_member.isgroup
domain_member_attributes['isdomain'] = True
# TODO: Nope, maybe here we can call get-netdomaincontroller ?
# Need to check in powerview
domain_member_attributes['server'] = attributes['name']
domain_member_attributes['sid'] = domain_member.objectsid
try:
domain_member_attributes['lastlogin'] = ad_object.lastlogon
except AttributeError:
self._logger.warning('lastlogon is not set, falling back to empty string')
domain_member_attributes['lastlogin'] = str()
results.append(rpcobj.RPCObject(domain_member_attributes))
return results
@LDAPRPCRequester._wmi_connection_init()
def get_netprocess(self):
wmi_enum_process = self._wmi_connection.ExecQuery('SELECT * from Win32_Process',
lFlags=WBEM_FLAG_FORWARD_ONLY)
while True:
try:
# TODO: do we have to get them one by one?
wmi_process = wmi_enum_process.Next(0xffffffff, 1)[0]
wmi_process_owner = wmi_process.GetOwner()
# Sometimes GetOwner() returns None but the list is not over
if wmi_process_owner != None:
attributes = {'computername': self._target_computer,
'processname': wmi_process.Name,
'processid': wmi_process.ProcessId,
'user': wmi_process_owner.User,
'domain': wmi_process_owner.Domain}
result_process = rpcobj.Process(attributes)
yield result_process
except Exception as e:
if str(e).find('S_FALSE') < 0:
raise e
else:
break
@LDAPRPCRequester._wmi_connection_init()
def get_userevent(self, event_type=['logon', 'tgt'], date_start=5):
limit_date = (datetime.today() - timedelta(days=date_start)).strftime('%Y%m%d%H%M%S.%f-000')
if event_type == ['logon']:
where_clause = 'EventCode=4624'
elif event_type == ['tgt']:
where_clause = 'EventCode=4768'
else:
where_clause = '(EventCode=4624 OR EventCode=4768)'
wmi_enum_event = self._wmi_connection.ExecQuery('SELECT * from Win32_NTLogEvent where {}'\
'and TimeGenerated >= \'{}\''.format(where_clause, limit_date),
lFlags=WBEM_FLAG_FORWARD_ONLY)
while True:
try:
# TODO: do we have to get them one by one?
wmi_event = wmi_enum_event.Next(0xffffffff, 1)[0]
wmi_event_type = wmi_event.EventIdentifier
wmi_event_info = wmi_event.InsertionStrings