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Land #6375, Active Directory Managed Groups Enumeration
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commit
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modules/post/windows/gather/enum_ad_managedby_groups.rb
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111
modules/post/windows/gather/enum_ad_managedby_groups.rb
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'rex'
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require 'msf/core'
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class Metasploit3 < Msf::Post
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include Msf::Auxiliary::Report
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include Msf::Post::Windows::LDAP
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USER_FIELDS = ['cn',
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'distinguishedname',
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'managedBy',
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'description'].freeze
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def initialize(info = {})
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super(update_info(
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info,
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'Name' => 'Windows Gather Active Directory Managed Groups',
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'Description' => %{
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This module will enumerate AD groups on the specified domain which are specifically managed.
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It cannot at the moment identify whether the 'Manager can update membership list' option
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option set; if so, it would allow that member to update the contents of that group. This
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could either be used as a persistence mechanism (for example, set your user as the 'Domain
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Admins' group manager) or could be used to detect privilege escalation opportunities
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without having domain admin privileges.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'Stuart Morgan <stuart.morgan[at]mwrinfosecurity.com>'
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],
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'Platform' => [ 'win' ],
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'SessionTypes' => [ 'meterpreter' ]
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))
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register_options([
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OptString.new('ADDITIONAL_FIELDS', [false, 'Additional group fields to retrieve, comma separated.', nil]),
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OptBool.new('RESOLVE_MANAGERS', [true, 'Query LDAP to get the account name of group managers.', TRUE]),
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OptBool.new('SECURITY_GROUPS_ONLY', [true, 'Only include security groups.', TRUE])
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], self.class)
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end
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def run
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@user_fields = USER_FIELDS.dup
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if datastore['ADDITIONAL_FIELDS']
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additional_fields = datastore['ADDITIONAL_FIELDS'].gsub(/\s+/, "").split(',')
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@user_fields.push(*additional_fields)
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end
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max_search = datastore['MAX_SEARCH']
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begin
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qs = '(&(objectClass=group)(managedBy=*))'
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if datastore['SECURITY_GROUPS_ONLY']
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qs = '(&(objectClass=group)(managedBy=*)(groupType:1.2.840.113556.1.4.803:=2147483648))'
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end
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q = query(qs, max_search, @user_fields)
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rescue ::RuntimeError, ::Rex::Post::Meterpreter::RequestError => e
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# Can't bind or in a network w/ limited accounts
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print_error(e.message)
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return
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end
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if q.nil? || q[:results].empty?
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print_status('No results returned.')
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else
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@user_fields << 'Manager Account Name' if datastore['RESOLVE_MANAGERS']
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results_table = parse_results(q[:results])
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print_line results_table.to_s
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end
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end
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# Takes the results of LDAP query, parses them into a table
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def parse_results(results)
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results_table = Rex::Ui::Text::Table.new(
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'Header' => "Groups with Managers",
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'Indent' => 1,
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'SortIndex' => -1,
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'Columns' => @user_fields
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)
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results.each do |result|
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row = []
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result.each do |field|
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if field.nil?
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row << ""
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else
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row << field[:value]
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end
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end
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if datastore['RESOLVE_MANAGERS']
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begin
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m = query("(distinguishedName=#{result[2][:value]})", 1, ['sAMAccountName'])
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if !m.nil? && !m[:results].empty?
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row << m[:results][0][0][:value]
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else
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row << ""
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end
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rescue
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row << ""
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end
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end
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results_table << row
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end
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results_table
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end
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end
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