Merge branch 'main' into mssql-improv

main
XiaoliChan 2024-02-28 09:14:02 +08:00 committed by GitHub
commit 387538a979
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5 changed files with 254 additions and 81 deletions

107
nxc/helpers/ntlm_parser.py Normal file
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@ -0,0 +1,107 @@
# Original from here: https://github.com/nopfor/ntlm_challenger
import datetime
from impacket.smb3 import WIN_VERSIONS
def decoder(byte_string, decode_type):
if decode_type == "byte":
return byte_string.decode("UTF-8").replace("\x00", "")
else:
return int.from_bytes(byte_string, "little")
def parse_version(version_bytes):
major_version = version_bytes[0]
minor_version = version_bytes[1]
product_build = decoder(version_bytes[2:4], "int")
if product_build in WIN_VERSIONS:
return f"{WIN_VERSIONS[product_build]} Build {product_build}"
else:
return f"Windows {major_version}.{minor_version} Build {product_build}"
def parse_target_info(target_info_bytes):
MsvAvEOL = 0x0000
MsvAvNbComputerName = 0x0001
MsvAvNbDomainName = 0x0002
MsvAvDnsComputerName = 0x0003
MsvAvDnsDomainName = 0x0004
MsvAvDnsTreeName = 0x0005
MsvAvFlags = 0x0006
MsvAvTimestamp = 0x0007
MsvAvSingleHost = 0x0008
MsvAvTargetName = 0x0009
MsvAvChannelBindings = 0x000A
target_info = {
"MsvAvNbComputerName": None,
"MsvAvDnsDomainName": None,
}
info_offset = 0
while info_offset < len(target_info_bytes):
av_id = decoder(target_info_bytes[info_offset:info_offset + 2], "int")
av_len = decoder(target_info_bytes[info_offset + 2:info_offset + 4], "int")
av_value = target_info_bytes[info_offset + 4:info_offset + 4 + av_len]
info_offset = info_offset + 4 + av_len
if av_id == MsvAvEOL:
pass
elif av_id == MsvAvNbComputerName:
target_info["MsvAvNbComputerName"] = decoder(av_value, "byte")
elif av_id == MsvAvNbDomainName:
target_info["MsvAvNbDomainName"] = decoder(av_value, "byte")
elif av_id == MsvAvDnsComputerName:
target_info["MsvAvDnsComputerName"] = decoder(av_value, "byte")
elif av_id == MsvAvDnsDomainName:
target_info["MsvAvDnsDomainName"] = decoder(av_value, "byte")
elif av_id == MsvAvDnsTreeName:
target_info["MsvAvDnsTreeName"] = decoder(av_value, "byte")
elif av_id == MsvAvFlags:
pass
elif av_id == MsvAvTimestamp:
filetime = decoder(av_value, "int")
microseconds = (filetime - 116444736000000000) / 10
time = datetime.datetime(1970, 1, 1) + datetime.timedelta(microseconds=microseconds)
target_info["MsvAvTimestamp"] = time.strftime("%b %d, %Y %H:%M:%S.%f")
elif av_id == MsvAvSingleHost:
target_info["MsvAvSingleHost"] = decoder(av_value, "byte")
elif av_id == MsvAvTargetName:
target_info["MsvAvTargetName"] = decoder(av_value, "byte")
elif av_id == MsvAvChannelBindings:
target_info["MsvAvChannelBindings"] = av_value
return target_info
def parse_challenge(challenge_message):
# TargetNameFields
target_name_fields = challenge_message[12:20]
target_name_len = decoder(target_name_fields[0:2], "int")
target_name_offset = decoder(target_name_fields[4:8], "int")
# TargetInfoFields
target_info_fields = challenge_message[40:48]
target_info_len = decoder(target_info_fields[0:2], "int")
target_info_offset = decoder(target_info_fields[4:8], "int")
# Version
version = None
version_bytes = challenge_message[48:56]
version = parse_version(version_bytes)
# TargetName
target_name = challenge_message[target_name_offset:target_name_offset + target_name_len]
target_name = decoder(target_name, "byte")
# TargetInfo
target_info_bytes = challenge_message[target_info_offset:target_info_offset + target_info_len]
target_info = parse_target_info(target_info_bytes)
return {
"target_name": target_name,
"version": version,
"target_info": target_info
}

106
nxc/modules/enum_ca.py Normal file
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@ -0,0 +1,106 @@
from impacket.dcerpc.v5 import transport, epm
from impacket.http import AUTH_NTLM
from impacket.dcerpc.v5.rpch import RPC_PROXY_INVALID_RPC_PORT_ERR, \
RPC_PROXY_CONN_A1_0X6BA_ERR, RPC_PROXY_CONN_A1_404_ERR, \
RPC_PROXY_RPC_OUT_DATA_404_ERR
from impacket import uuid
import requests
class NXCModule:
"""
-------
Module by @0xjbb, original code from Impacket rpcdump.py
"""
KNOWN_PROTOCOLS = {
135: {"bindstr": r"ncacn_ip_tcp:%s[135]"},
139: {"bindstr": r"ncacn_np:%s[\pipe\epmapper]"},
443: {"bindstr": r"ncacn_http:[593,RpcProxy=%s:443]"},
445: {"bindstr": r"ncacn_np:%s[\pipe\epmapper]"},
593: {"bindstr": r"ncacn_http:%s"}
}
name = "enum_ca"
description = "Anonymously uses RPC endpoints to hunt for ADCS CAs"
supported_protocols = ["smb"] # Example: ['smb', 'mssql']
opsec_safe = True # Does the module touch disk?
multiple_hosts = True # Does it make sense to run this module on multiple hosts at a time?
def __init__(self, context=None, module_options=None):
self.context = context
self.module_options = module_options
def options(self, context, module_options):
pass
def on_login(self, context, connection):
self.__username = connection.username
self.__password = connection.password
self.__domain = connection.domain
self.__lmhash = ""
self.__nthash = ""
self.__port = 135.
self.__stringbinding = ""
if context.hash and ":" in context.hash[0]:
hashList = context.hash[0].split(":")
self.__nthash = hashList[-1]
self.__lmhash = hashList[0]
elif context.hash and ":" not in context.hash[0]:
self.__nthash = context.hash[0]
self.__lmhash = "00000000000000000000000000000000"
self.__stringbinding = self.KNOWN_PROTOCOLS[self.__port]["bindstr"] % connection.host
context.log.debug(f"StringBinding {self.__stringbinding}")
rpctransport = transport.DCERPCTransportFactory(self.__stringbinding)
if self.__port in [139, 445]:
# Setting credentials for SMB
rpctransport.set_credentials(self.__username, self.__password, self.__domain, self.__lmhash, self.__nthash)
rpctransport.setRemoteHost(connection.host)
rpctransport.set_dport(self.__port)
elif self.__port in [443]:
# Setting credentials only for RPC Proxy, but not for the MSRPC level
rpctransport.set_credentials(self.__username, self.__password, self.__domain, self.__lmhash, self.__nthash)
rpctransport.set_auth_type(AUTH_NTLM)
else:
pass
try:
entries = self.__fetchList(rpctransport)
except Exception as e:
error_text = f"Protocol failed: {e}"
context.log.fail(error_text)
if RPC_PROXY_INVALID_RPC_PORT_ERR in error_text or \
RPC_PROXY_RPC_OUT_DATA_404_ERR in error_text or \
RPC_PROXY_CONN_A1_404_ERR in error_text or \
RPC_PROXY_CONN_A1_0X6BA_ERR in error_text:
context.log.fail("This usually means the target does not allow "
"to connect to its epmapper using RpcProxy.")
return
for entry in entries:
tmpUUID = str(entry["tower"]["Floors"][0])
if uuid.uuidtup_to_bin(uuid.string_to_uuidtup(tmpUUID))[:18] in epm.KNOWN_UUIDS:
exename = epm.KNOWN_UUIDS[uuid.uuidtup_to_bin(uuid.string_to_uuidtup(tmpUUID))[:18]]
context.log.debug("EXEs %s" % exename)
if exename == "certsrv.exe":
context.log.highlight("Active Directory Certificate Services Found.")
url = f"http://{connection.host}/certsrv/certfnsh.asp"
context.log.highlight(url)
try:
response = requests.get(url, timeout=5)
if response.status_code == 401 and "WWW-Authenticate" in response.headers and "ntlm" in response.headers["WWW-Authenticate"].lower():
context.log.highlight("Web enrollment found on HTTP (ESC8).")
except requests.RequestException as e:
context.log.debug(e)
return
def __fetchList(self, rpctransport):
dce = rpctransport.get_dce_rpc()
dce.connect()
resp = epm.hept_lookup(None, dce=dce)
dce.disconnect()
return resp

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@ -399,7 +399,7 @@ class ldap(connection):
return False
except (KeyError, KerberosException, OSError) as e:
self.logger.fail(
f"{self.domain}\\{self.username}{' from ccache' if useCache else ':%s' % (kerb_pass if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8)} {e!s}",
f"{self.domain}\\{self.username}{' from ccache' if useCache else ':%s' % (process_secret(kerb_pass))} {e!s}",
color="red",
)
return False
@ -442,21 +442,21 @@ class ldap(connection):
except SessionError as e:
error, desc = e.getErrorString()
self.logger.fail(
f"{self.domain}\\{self.username}{' from ccache' if useCache else ':%s' % (kerb_pass if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8)} {error!s}",
f"{self.domain}\\{self.username}{' from ccache' if useCache else ':%s' % (process_secret(kerb_pass))} {error!s}",
color="magenta" if error in ldap_error_status else "red",
)
return False
except Exception as e:
error_code = str(e).split()[-2][:-1]
self.logger.fail(
f"{self.domain}\\{self.username}:{self.password if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
f"{self.domain}\\{self.username}:{process_secret(self.password)} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
color="magenta" if error_code in ldap_error_status else "red",
)
return False
else:
error_code = str(e).split()[-2][:-1]
self.logger.fail(
f"{self.domain}\\{self.username}{' from ccache' if useCache else ':%s' % (kerb_pass if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8)} {error_code!s}",
f"{self.domain}\\{self.username}{' from ccache' if useCache else ':%s' % (process_secret(kerb_pass))} {error_code!s}",
color="magenta" if error_code in ldap_error_status else "red",
)
return False
@ -526,18 +526,18 @@ class ldap(connection):
except Exception as e:
error_code = str(e).split()[-2][:-1]
self.logger.fail(
f"{self.domain}\\{self.username}:{self.password if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
f"{self.domain}\\{self.username}:{process_secret(self.password)} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
color="magenta" if (error_code in ldap_error_status and error_code != 1) else "red",
)
else:
error_code = str(e).split()[-2][:-1]
self.logger.fail(
f"{self.domain}\\{self.username}:{self.password if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
f"{self.domain}\\{self.username}:{process_secret(self.password)} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
color="magenta" if (error_code in ldap_error_status and error_code != 1) else "red",
)
return False
except OSError as e:
self.logger.fail(f"{self.domain}\\{self.username}:{self.password if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {'Error connecting to the domain, are you sure LDAP service is running on the target?'} \nError: {e}")
self.logger.fail(f"{self.domain}\\{self.username}:{process_secret(self.password)} {'Error connecting to the domain, are you sure LDAP service is running on the target?'} \nError: {e}")
return False
def hash_login(self, domain, username, ntlm_hash):
@ -619,18 +619,18 @@ class ldap(connection):
except ldap_impacket.LDAPSessionError as e:
error_code = str(e).split()[-2][:-1]
self.logger.fail(
f"{self.domain}\\{self.username}:{nthash if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
f"{self.domain}\\{self.username}:{process_secret(nthash)} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
color="magenta" if (error_code in ldap_error_status and error_code != 1) else "red",
)
else:
error_code = str(e).split()[-2][:-1]
self.logger.fail(
f"{self.domain}\\{self.username}:{nthash if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
f"{self.domain}\\{self.username}:{process_secret(nthash)} {ldap_error_status[error_code] if error_code in ldap_error_status else ''}",
color="magenta" if (error_code in ldap_error_status and error_code != 1) else "red",
)
return False
except OSError as e:
self.logger.fail(f"{self.domain}\\{self.username}:{self.password if not self.config.get('nxc', 'audit_mode') else self.config.get('nxc', 'audit_mode') * 8} {'Error connecting to the domain, are you sure LDAP service is running on the target?'} \nError: {e}")
self.logger.fail(f"{self.domain}\\{self.username}:{process_secret(self.password)} {'Error connecting to the domain, are you sure LDAP service is running on the target?'} \nError: {e}")
return False
def create_smbv1_conn(self):

View File

@ -1,7 +1,7 @@
import os
import base64
import requests
import urllib3
import contextlib
import logging
import xml.etree.ElementTree as ET
@ -10,13 +10,13 @@ from datetime import datetime
from pypsrp.wsman import NAMESPACES
from pypsrp.client import Client
from impacket.smbconnection import SMBConnection
from impacket.examples.secretsdump import LocalOperations, LSASecrets, SAMHashes
from nxc.config import process_secret
from nxc.connection import connection
from nxc.helpers.bloodhound import add_user_bh
from nxc.helpers.misc import gen_random_string
from nxc.helpers.ntlm_parser import parse_challenge
from nxc.logger import NXCAdapter
@ -33,57 +33,32 @@ class winrm(connection):
self.lmhash = ""
self.nthash = ""
self.ssl = False
self.auth_type = None
self.challenge_header = None
connection.__init__(self, args, db, host)
def proto_logger(self):
# Reason why default is SMB/445, because default is enumerate over SMB.
# For more details, please check the function "print_host_info"
logging.getLogger("pypsrp").disabled = True
logging.getLogger("pypsrp.wsman").disabled = True
self.logger = NXCAdapter(
extra={
"protocol": "SMB",
"protocol": "WINRM",
"host": self.host,
"port": "445",
"port": "5985",
"hostname": self.hostname,
}
)
def enum_host_info(self):
# smb no open, specify the domain
if self.args.no_smb:
self.domain = self.args.domain
else:
try:
smb_conn = SMBConnection(self.host, self.host, None, timeout=5)
no_ntlm = False
except Exception as e:
self.logger.fail(f"Error retrieving host domain: {e} specify one manually with the '-d' flag")
else:
try:
smb_conn.login("", "")
except BrokenPipeError:
self.logger.fail("Broken Pipe Error while attempting to login")
except Exception as e:
if "STATUS_NOT_SUPPORTED" in str(e):
# no ntlm supported
no_ntlm = True
self.domain = smb_conn.getServerDNSDomainName() if not no_ntlm else self.args.domain
self.hostname = smb_conn.getServerName() if not no_ntlm else self.host
self.server_os = smb_conn.getServerOS()
if isinstance(self.server_os.lower(), bytes):
self.server_os = self.server_os.decode("utf-8")
ntlm_info = parse_challenge(base64.b64decode(self.challenge_header.split(" ")[1].replace(",", "")))
self.domain = ntlm_info["target_info"]["MsvAvDnsDomainName"]
self.hostname = ntlm_info["target_info"]["MsvAvNbComputerName"]
self.server_os = ntlm_info["version"]
self.logger.extra["hostname"] = self.hostname
self.output_filename = os.path.expanduser(f"~/.nxc/logs/{self.hostname}_{self.host}_{datetime.now().strftime('%Y-%m-%d_%H%M%S')}")
with contextlib.suppress(Exception):
smb_conn.logoff()
self.db.add_host(self.host, self.port, self.hostname, self.domain, self.server_os)
if self.args.domain:
@ -98,16 +73,10 @@ class winrm(connection):
self.output_filename = os.path.expanduser(f"~/.nxc/logs/{self.hostname}_{self.host}_{datetime.now().strftime('%Y-%m-%d_%H%M%S')}".replace(":", "-"))
def print_host_info(self):
if self.args.no_smb:
self.logger.extra["protocol"] = "WINRM-SSL" if self.ssl else "WINRM"
self.logger.extra["port"] = self.port
self.logger.display(f"{self.server_os} (name:{self.hostname}) (domain:{self.domain})")
else:
self.logger.display(f"{self.server_os} (name:{self.hostname}) (domain:{self.domain})")
self.logger.extra["protocol"] = "WINRM-SSL" if self.ssl else "WINRM"
self.logger.extra["port"] = self.port
self.logger.info(f"Connection information: {self.endpoint} (auth type:{self.auth_type}) (domain:{self.domain if self.args.domain else ''})")
return True
def create_conn_obj(self):
@ -117,6 +86,14 @@ class winrm(connection):
endpoints = {}
headers = {
"Content-Length": "0",
"Keep-Alive": "true",
"Content-Type": "application/soap+xml;charset=UTF-8",
"User-Agent": "Microsoft WinRM Client",
"Authorization": "Negotiate TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw=="
}
for protocol in self.args.check_proto:
endpoints[protocol] = {}
endpoints[protocol]["port"] = self.port[self.args.check_proto.index(protocol)] if len(self.port) == 2 else self.port[0]
@ -131,9 +108,12 @@ class winrm(connection):
self.port = endpoints[protocol]["port"]
try:
self.logger.debug(f"Requesting URL: {endpoints[protocol]['url']}")
res = requests.post(endpoints[protocol]["url"], verify=False, timeout=self.args.http_timeout)
res = requests.post(endpoints[protocol]["url"], headers=headers, verify=False, timeout=self.args.http_timeout)
self.logger.debug(f"Received response code: {res.status_code}")
self.auth_type = res.headers["WWW-Authenticate"] if "WWW-Authenticate" in res.headers else "NOAUTH"
self.challenge_header = res.headers["WWW-Authenticate"]
if (not self.challenge_header) or ("Negotiate" not in self.challenge_header):
self.logger.info('Failed to get NTLM challenge from target "/wsman" endpoint, maybe isn\'t winrm service.')
return False
self.endpoint = endpoints[protocol]["url"]
self.ssl = endpoints[protocol]["ssl"]
return True

View File

@ -1,6 +1,3 @@
from argparse import _StoreTrueAction
def proto_args(parser, std_parser, module_parser):
winrm_parser = parser.add_parser("winrm", help="own stuff using WINRM", parents=[std_parser, module_parser])
winrm_parser.add_argument("-H", "--hash", metavar="HASH", dest="hash", nargs="+", default=[], help="NTLM hash(es) or file(s) containing NTLM hashes")
@ -9,12 +6,10 @@ def proto_args(parser, std_parser, module_parser):
winrm_parser.add_argument("--check-proto", nargs="+", default=["http", "https"], help="Choose what prorocol you want to check, default is %(default)s, format: 'http https'(with space separated) or 'single-protocol'")
winrm_parser.add_argument("--laps", dest="laps", metavar="LAPS", type=str, help="LAPS authentification", nargs="?", const="administrator")
winrm_parser.add_argument("--http-timeout", dest="http_timeout", type=int, default=10, help="HTTP timeout for WinRM connections")
no_smb_arg = winrm_parser.add_argument("--no-smb", action=get_conditional_action(_StoreTrueAction), make_required=[], help="No smb connection")
dgroup = winrm_parser.add_mutually_exclusive_group()
domain_arg = dgroup.add_argument("-d", metavar="DOMAIN", dest="domain", type=str, default=None, help="domain to authenticate to")
dgroup.add_argument("-d", metavar="DOMAIN", dest="domain", type=str, default=None, help="domain to authenticate to")
dgroup.add_argument("--local-auth", action="store_true", help="authenticate locally to each target")
no_smb_arg.make_required = [domain_arg]
cgroup = winrm_parser.add_argument_group("Credential Gathering", "Options for gathering credentials")
cgroup.add_argument("--dump-method", action="store", default="cmd", choices={"cmd", "powershell"}, help="Select shell type in hashes dump")
@ -29,18 +24,3 @@ def proto_args(parser, std_parser, module_parser):
cgroup.add_argument("-X", metavar="PS_COMMAND", dest="ps_execute", help="execute the specified PowerShell command")
return parser
def get_conditional_action(baseAction):
class ConditionalAction(baseAction):
def __init__(self, option_strings, dest, **kwargs):
x = kwargs.pop("make_required", [])
super().__init__(option_strings, dest, **kwargs)
self.make_required = x
def __call__(self, parser, namespace, values, option_string=None):
for x in self.make_required:
x.required = True
super().__call__(parser, namespace, values, option_string)
return ConditionalAction