460 lines
20 KiB
Python
460 lines
20 KiB
Python
import os
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import struct
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import logging
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from io import StringIO
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from six import indexbytes
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from datetime import datetime
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from nxc.config import process_secret
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from nxc.connection import connection, dcom_FirewallChecker, requires_admin
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from nxc.logger import NXCAdapter
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from nxc.protocols.wmi import wmiexec, wmiexec_event
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from impacket import ntlm
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from impacket.uuid import uuidtup_to_bin
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from impacket.krb5.ccache import CCache
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from impacket.dcerpc.v5.dtypes import NULL
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from impacket.dcerpc.v5 import transport, epm
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from impacket.dcerpc.v5.rpcrt import RPC_C_AUTHN_LEVEL_PKT_PRIVACY, RPC_C_AUTHN_WINNT, RPC_C_AUTHN_GSS_NEGOTIATE, RPC_C_AUTHN_LEVEL_PKT_INTEGRITY, MSRPC_BIND, MSRPCBind, CtxItem, MSRPCHeader, SEC_TRAILER, MSRPCBindAck
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from impacket.dcerpc.v5.dcomrt import DCOMConnection
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from impacket.dcerpc.v5.dcom.wmi import CLSID_WbemLevel1Login, IID_IWbemLevel1Login, IWbemLevel1Login
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import contextlib
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MSRPC_UUID_PORTMAP = uuidtup_to_bin(("E1AF8308-5D1F-11C9-91A4-08002B14A0FA", "3.0"))
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class wmi(connection):
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def __init__(self, args, db, host):
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self.domain = None
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self.hash = ""
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self.lmhash = ""
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self.nthash = ""
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self.fqdn = ""
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self.remoteName = ""
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self.server_os = None
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self.doKerberos = False
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self.stringBinding = None
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# from: https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/18d8fbe8-a967-4f1c-ae50-99ca8e491d2d
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self.rpc_error_status = {
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"0000052F": "STATUS_ACCOUNT_RESTRICTION",
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"00000533": "STATUS_ACCOUNT_DISABLED",
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"00000775": "STATUS_ACCOUNT_LOCKED_OUT",
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"00000701": "STATUS_ACCOUNT_EXPIRED",
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"00000532": "STATUS_PASSWORD_EXPIRED",
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"00000530": "STATUS_INVALID_LOGON_HOURS",
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"00000531": "STATUS_INVALID_WORKSTATION",
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"00000569": "STATUS_LOGON_TYPE_NOT_GRANTED",
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"00000773": "STATUS_PASSWORD_MUST_CHANGE",
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"00000005": "STATUS_ACCESS_DENIED",
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"0000052E": "STATUS_LOGON_FAILURE",
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"0000052B": "STATUS_WRONG_PASSWORD",
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"00000721": "RPC_S_SEC_PKG_ERROR"
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}
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connection.__init__(self, args, db, host)
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def proto_logger(self):
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self.logger = NXCAdapter(
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extra={
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"protocol": "WMI",
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"host": self.host,
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"port": self.args.port,
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"hostname": self.hostname
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}
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)
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def create_conn_obj(self):
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if self.remoteName == "":
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self.remoteName = self.host
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try:
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rpctansport = transport.DCERPCTransportFactory(fr"ncacn_ip_tcp:{self.remoteName}[{self.args.port!s}]")
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rpctansport.set_credentials(username="", password="", domain="", lmhash="", nthash="", aesKey="")
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rpctansport.setRemoteHost(self.host)
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rpctansport.set_connect_timeout(self.args.rpc_timeout)
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dce = rpctansport.get_dce_rpc()
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dce.set_auth_type(RPC_C_AUTHN_WINNT)
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dce.connect()
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dce.bind(MSRPC_UUID_PORTMAP)
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dce.disconnect()
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except Exception as e:
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self.logger.debug(str(e))
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return False
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else:
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self.conn = rpctansport
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return True
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def enum_host_info(self):
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# All code pick from DumpNTLNInfo.py
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# https://github.com/fortra/impacket/blob/master/examples/DumpNTLMInfo.py
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ntlmChallenge = None
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bind = MSRPCBind()
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item = CtxItem()
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item["AbstractSyntax"] = epm.MSRPC_UUID_PORTMAP
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item["TransferSyntax"] = uuidtup_to_bin(("8a885d04-1ceb-11c9-9fe8-08002b104860", "2.0"))
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item["ContextID"] = 0
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item["TransItems"] = 1
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bind.addCtxItem(item)
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packet = MSRPCHeader()
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packet["type"] = MSRPC_BIND
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packet["pduData"] = bind.getData()
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packet["call_id"] = 1
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auth = ntlm.getNTLMSSPType1("", "", signingRequired=True, use_ntlmv2=True)
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sec_trailer = SEC_TRAILER()
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sec_trailer["auth_type"] = RPC_C_AUTHN_WINNT
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sec_trailer["auth_level"] = RPC_C_AUTHN_LEVEL_PKT_INTEGRITY
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sec_trailer["auth_ctx_id"] = 0 + 79231
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pad = (4 - (len(packet.get_packet()) % 4)) % 4
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if pad != 0:
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packet["pduData"] += b"\xFF" * pad
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sec_trailer["auth_pad_len"] = pad
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packet["sec_trailer"] = sec_trailer
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packet["auth_data"] = auth
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try:
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self.conn.connect()
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self.conn.send(packet.get_packet())
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buffer = self.conn.recv()
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except Exception:
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buffer = 0
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if buffer != 0:
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response = MSRPCHeader(buffer)
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bindResp = MSRPCBindAck(response.getData())
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ntlmChallenge = ntlm.NTLMAuthChallenge(bindResp["auth_data"])
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if ntlmChallenge["TargetInfoFields_len"] > 0:
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av_pairs = ntlm.AV_PAIRS(ntlmChallenge["TargetInfoFields"][: ntlmChallenge["TargetInfoFields_len"]])
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if av_pairs[ntlm.NTLMSSP_AV_HOSTNAME][1] is not None:
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try:
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self.hostname = av_pairs[ntlm.NTLMSSP_AV_HOSTNAME][1].decode("utf-16le")
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except Exception:
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self.hostname = self.host
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if av_pairs[ntlm.NTLMSSP_AV_DNS_DOMAINNAME][1] is not None:
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try:
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self.domain = av_pairs[ntlm.NTLMSSP_AV_DNS_DOMAINNAME][1].decode("utf-16le")
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except Exception:
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self.domain = self.args.domain
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if av_pairs[ntlm.NTLMSSP_AV_DNS_HOSTNAME][1] is not None:
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with contextlib.suppress(Exception):
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self.fqdn = av_pairs[ntlm.NTLMSSP_AV_DNS_HOSTNAME][1].decode("utf-16le")
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if "Version" in ntlmChallenge.fields:
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version = ntlmChallenge["Version"]
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if len(version) >= 4:
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self.server_os = "Windows NT %d.%d Build %d" % (indexbytes(version, 0), indexbytes(version, 1), struct.unpack("<H", version[2:4])[0])
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else:
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self.hostname = self.host
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if self.args.local_auth:
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self.domain = self.hostname
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if self.args.domain:
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self.domain = self.args.domain
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self.fqdn = f"{self.hostname}.{self.domain}"
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self.logger.extra["hostname"] = self.hostname
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self.output_filename = os.path.expanduser(f"~/.nxc/logs/{self.hostname}_{self.host}_{datetime.now().strftime('%Y-%m-%d_%H%M%S')}".replace(":", "-"))
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def print_host_info(self):
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self.logger.extra["protocol"] = "RPC"
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self.logger.extra["port"] = "135"
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self.logger.display(f"{self.server_os} (name:{self.hostname}) (domain:{self.domain})")
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return True
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def check_if_admin(self):
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try:
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dcom = DCOMConnection(self.conn.getRemoteName(), self.username, self.password, self.domain, self.lmhash, self.nthash, oxidResolver=True, doKerberos=self.doKerberos, kdcHost=self.kdcHost, aesKey=self.aesKey)
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iInterface = dcom.CoCreateInstanceEx(CLSID_WbemLevel1Login, IID_IWbemLevel1Login)
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flag, self.stringBinding = dcom_FirewallChecker(iInterface, self.args.rpc_timeout)
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except Exception as e:
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if "dcom" in locals():
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dcom.disconnect()
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if "access_denied" not in str(e).lower():
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self.logger.fail(str(e))
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else:
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if not flag or not self.stringBinding:
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dcom.disconnect()
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error_msg = f'Check admin error: dcom initialization failed with stringbinding: "{self.stringBinding}", please try "--rpc-timeout" option. (probably is admin)'
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if not self.stringBinding:
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error_msg = "Check admin error: dcom initialization failed: can't get target stringbinding, maybe cause by IPv6 or any other issues, please check your target again"
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self.logger.fail(error_msg) if not flag else self.logger.debug(error_msg)
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else:
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try:
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iWbemLevel1Login = IWbemLevel1Login(iInterface)
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iWbemServices = iWbemLevel1Login.NTLMLogin("//./root/cimv2", NULL, NULL)
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except Exception as e:
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dcom.disconnect()
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if "access_denied" not in str(e).lower():
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self.logger.fail(str(e))
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else:
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dcom.disconnect()
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self.logger.extra["protocol"] = "WMI"
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self.admin_privs = True
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def kerberos_login(self, domain, username, password="", ntlm_hash="", aesKey="", kdcHost="", useCache=False):
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logging.getLogger("impacket").disabled = True
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lmhash = ""
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nthash = ""
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self.password = password
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self.username = username
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self.domain = domain
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self.remoteName = self.fqdn
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self.create_conn_obj()
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if password == "":
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if ntlm_hash.find(":") != -1:
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lmhash, nthash = ntlm_hash.split(":")
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else:
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nthash = ntlm_hash
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self.nthash = nthash
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self.lmhash = lmhash
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kerb_pass = next(s for s in [nthash, password, aesKey] if s) if not all(s == "" for s in [nthash, password, aesKey]) else ""
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if useCache and kerb_pass == "":
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ccache = CCache.loadFile(os.getenv("KRB5CCNAME"))
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username = ccache.credentials[0].header["client"].prettyPrint().decode().split("@")[0]
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self.username = username
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used_ccache = " from ccache" if useCache else f":{process_secret(kerb_pass)}"
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try:
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self.conn.set_credentials(username=username, password=password, domain=domain, lmhash=lmhash, nthash=nthash, aesKey=self.aesKey)
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self.conn.set_kerberos(True, kdcHost)
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dce = self.conn.get_dce_rpc()
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dce.set_auth_type(RPC_C_AUTHN_GSS_NEGOTIATE)
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dce.set_auth_level(RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
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dce.connect()
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dce.bind(MSRPC_UUID_PORTMAP)
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except Exception as e:
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dce.disconnect()
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error_msg = str(e).lower()
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self.logger.debug(error_msg)
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if "unpack requires a buffer of 4 bytes" in error_msg:
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error_msg = "Kerberos authentication failure"
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out = f"{self.domain}\\{self.username}{used_ccache} {error_msg}"
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self.logger.fail(out)
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elif "kerberos sessionerror" in str(e).lower():
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out = f"{self.domain}\\{self.username}{used_ccache} {next(iter(e.getErrorString()))}"
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self.logger.fail(out, color="magenta")
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return False
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else:
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out = f"{self.domain}\\{self.username}{used_ccache} {e!s}"
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self.logger.fail(out, color="red")
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return False
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else:
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try:
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# Get data from rpc connection if got vaild creds
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entry_handle = epm.ept_lookup_handle_t()
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request = epm.ept_lookup()
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request["inquiry_type"] = 0x0
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request["object"] = NULL
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request["Ifid"] = NULL
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request["vers_option"] = 0x1
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request["entry_handle"] = entry_handle
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request["max_ents"] = 1
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dce.request(request)
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except Exception as e:
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dce.disconnect()
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error_msg = str(e).lower()
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self.logger.debug(error_msg)
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for code in self.rpc_error_status:
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if code in error_msg:
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error_msg = self.rpc_error_status[code]
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out = f"{self.domain}\\{self.username}{used_ccache} {error_msg.upper()}"
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self.logger.fail(out, color=("red" if "access_denied" in error_msg else "magenta"))
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return False
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else:
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self.doKerberos = True
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self.check_if_admin()
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dce.disconnect()
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out = f"{self.domain}\\{self.username}{used_ccache} {self.mark_pwned()}"
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self.logger.success(out)
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return True
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def plaintext_login(self, domain, username, password):
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self.password = password
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self.username = username
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self.domain = domain
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try:
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self.conn.set_credentials(username=self.username, password=self.password, domain=self.domain, lmhash=self.lmhash, nthash=self.nthash)
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dce = self.conn.get_dce_rpc()
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dce.set_auth_type(RPC_C_AUTHN_WINNT)
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dce.set_auth_level(RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
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dce.connect()
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dce.bind(MSRPC_UUID_PORTMAP)
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except Exception as e:
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dce.disconnect()
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self.logger.debug(str(e))
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out = f"{self.domain}\\{self.username}:{process_secret(self.password)} {e!s}"
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self.logger.fail(out, color="red")
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else:
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try:
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# Get data from rpc connection if got vaild creds
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entry_handle = epm.ept_lookup_handle_t()
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request = epm.ept_lookup()
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request["inquiry_type"] = 0x0
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request["object"] = NULL
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request["Ifid"] = NULL
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request["vers_option"] = 0x1
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request["entry_handle"] = entry_handle
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request["max_ents"] = 1
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dce.request(request)
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except Exception as e:
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dce.disconnect()
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error_msg = str(e).lower()
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self.logger.debug(error_msg)
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for code in self.rpc_error_status:
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if code in error_msg:
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error_msg = self.rpc_error_status[code]
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self.logger.fail((f"{self.domain}\\{self.username}:{process_secret(self.password)} ({error_msg.upper()})"), color=("red" if "access_denied" in error_msg else "magenta"))
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return False
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else:
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self.check_if_admin()
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dce.disconnect()
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out = f"{domain}\\{self.username}:{process_secret(self.password)} {self.mark_pwned()}"
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if self.username == "" and self.password == "":
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out += "(Default allow anonymous login)"
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self.logger.success(out)
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return True
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def hash_login(self, domain, username, ntlm_hash):
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self.username = username
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lmhash = ""
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nthash = ""
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if ntlm_hash.find(":") != -1:
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self.lmhash, self.nthash = ntlm_hash.split(":")
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else:
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lmhash = ""
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nthash = ntlm_hash
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self.nthash = nthash
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self.lmhash = lmhash
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try:
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self.conn.set_credentials(username=self.username, password=self.password, domain=self.domain, lmhash=lmhash, nthash=nthash)
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dce = self.conn.get_dce_rpc()
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dce.set_auth_type(RPC_C_AUTHN_WINNT)
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dce.set_auth_level(RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
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dce.connect()
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dce.bind(MSRPC_UUID_PORTMAP)
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except Exception as e:
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dce.disconnect()
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self.logger.debug(str(e))
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out = f"{domain}\\{self.username}:{process_secret(self.nthash)} {e!s}"
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self.logger.fail(out, color="red")
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else:
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try:
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# Get data from rpc connection if got vaild creds
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entry_handle = epm.ept_lookup_handle_t()
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request = epm.ept_lookup()
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request["inquiry_type"] = 0x0
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request["object"] = NULL
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request["Ifid"] = NULL
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request["vers_option"] = 0x1
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request["entry_handle"] = entry_handle
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request["max_ents"] = 1
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dce.request(request)
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except Exception as e:
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dce.disconnect()
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error_msg = str(e).lower()
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self.logger.debug(error_msg)
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for code in self.rpc_error_status:
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if code in error_msg:
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error_msg = self.rpc_error_status[code]
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self.logger.fail((f"{self.domain}\\{self.username}:{process_secret(self.nthash)} ({error_msg.upper()})"), color=("red" if "access_denied" in error_msg else "magenta"))
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return False
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else:
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self.check_if_admin()
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dce.disconnect()
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out = f"{domain}\\{self.username}:{process_secret(self.nthash)} {self.mark_pwned()}"
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if self.username == "" and self.password == "":
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out += "(Default allow anonymous login)"
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self.logger.success(out)
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return True
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# It's very complex to use wmi from rpctansport "convert" to dcom, so let we use dcom directly.
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@requires_admin
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def wmi(self, wql=None, namespace=None):
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"""Execute WQL syntax via WMI
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This is done via the --wmi flag
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"""
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records = []
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if not wql:
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wql = self.args.wmi.strip("\n")
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if not namespace:
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namespace = self.args.wmi_namespace
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try:
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dcom = DCOMConnection(self.conn.getRemoteName(), self.username, self.password, self.domain, self.lmhash, self.nthash, oxidResolver=True, doKerberos=self.doKerberos, kdcHost=self.kdcHost, aesKey=self.aesKey)
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iInterface = dcom.CoCreateInstanceEx(CLSID_WbemLevel1Login, IID_IWbemLevel1Login)
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iWbemLevel1Login = IWbemLevel1Login(iInterface)
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iWbemServices = iWbemLevel1Login.NTLMLogin(namespace, NULL, NULL)
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iWbemLevel1Login.RemRelease()
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iEnumWbemClassObject = iWbemServices.ExecQuery(wql)
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except Exception as e:
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dcom.disconnect()
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self.logger.debug(str(e))
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self.logger.fail(f"Execute WQL error: {e}")
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return False
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else:
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self.logger.info(f"Executing WQL syntax: {wql}")
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try:
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while True:
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wmi_results = iEnumWbemClassObject.Next(0xFFFFFFFF, 1)[0]
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record = wmi_results.getProperties()
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records.append(record)
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for k, v in record.items():
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self.logger.highlight(f"{k} => {v['value']}")
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except Exception as e:
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if str(e).find("S_FALSE") < 0:
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self.logger.debug(e)
|
|
|
|
dcom.disconnect()
|
|
|
|
return records
|
|
|
|
@requires_admin
|
|
def execute(self, command=None, get_output=False):
|
|
output = ""
|
|
if not command:
|
|
command = self.args.execute
|
|
|
|
if not self.args.no_output:
|
|
get_output = True
|
|
|
|
if "systeminfo" in command and self.args.exec_timeout < 10:
|
|
self.logger.fail("Execute 'systeminfo' must set the interval time higher than 10 seconds")
|
|
return False
|
|
|
|
if self.server_os is not None and "NT 5" in self.server_os:
|
|
self.logger.fail("Execute command failed, not support current server os (version < NT 6)")
|
|
return False
|
|
|
|
if self.args.exec_method == "wmiexec":
|
|
exec_method = wmiexec.WMIEXEC(self.conn.getRemoteName(), self.username, self.password, self.domain, self.lmhash, self.nthash, self.doKerberos, self.kdcHost, self.aesKey, self.logger, self.args.exec_timeout, self.args.codec)
|
|
output = exec_method.execute(command, get_output)
|
|
|
|
elif self.args.exec_method == "wmiexec-event":
|
|
exec_method = wmiexec_event.WMIEXEC_EVENT(self.conn.getRemoteName(), self.username, self.password, self.domain, self.lmhash, self.nthash, self.doKerberos, self.kdcHost, self.aesKey, self.logger, self.args.exec_timeout, self.args.codec)
|
|
output = exec_method.execute(command, get_output)
|
|
|
|
self.conn.disconnect()
|
|
if output == "" and get_output:
|
|
self.logger.fail("Execute command failed, probabaly got detection by AV.")
|
|
return False
|
|
else:
|
|
self.logger.success(f'Executed command: "{command}" via {self.args.exec_method}')
|
|
buf = StringIO(output).readlines()
|
|
for line in buf:
|
|
self.logger.highlight(line.strip())
|
|
return output
|