74 lines
1.9 KiB
Ruby
74 lines
1.9 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::Smtp
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include Msf::Auxiliary::Scanner
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include Msf::Auxiliary::Report
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def initialize
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super(
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'Name' => 'SMTP Open Relay Detection',
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'Description' => %q{
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This module tests if an SMTP server will accept (via a code 250)
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an e-mail from the provided FROM: address. If successful, a random
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e-mail message may be sent to the named RCPT: address.
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},
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'References' =>
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[
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['URL', 'http://www.ietf.org/rfc/rfc2821.txt'],
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],
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'Author' => 'Campbell Murray',
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'License' => MSF_LICENSE
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)
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end
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def peer
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"#{rhost}:#{rport}"
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end
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def run_host(ip)
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begin
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connect
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rescue
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print_error("#{peer} - Unable to establish an SMTP session")
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return
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end
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banner_sanitized = Rex::Text.to_hex_ascii(banner.to_s)
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print_status("#{peer} - SMTP #{banner_sanitized}")
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report_service(:host => rhost, :port => rport, :name => "smtp", :info => banner)
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do_test_relay
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end
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def do_test_relay
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res = raw_send_recv("EHLO X\r\n")
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vprint_status("#{peer} - #{res.inspect}")
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res = raw_send_recv("MAIL FROM: #{datastore['MAILFROM']}\r\n")
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vprint_status("#{peer} - #{res.inspect}")
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res = raw_send_recv("RCPT TO: #{datastore['MAILTO']}\r\n")
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vprint_status("#{peer} - #{res.inspect}")
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res = raw_send_recv("DATA\r\n")
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vprint_status("#{peer} - #{res.inspect}")
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res = raw_send_recv("#{Rex::Text.rand_text_alpha(rand(10)+5)}\r\n.\r\n")
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vprint_status("#{peer} - #{res.inspect}")
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if res =~ /250/
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print_good("#{peer} - Potential open SMTP relay detected")
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else
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print_status "#{peer} - No relay detected"
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end
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end
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end
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