Re: Privilege escalation on Windows using BinaryPlanting

["Thor (Hammer of God)" <thor () hammerofgod com>]

You'd have to be admin to install as a service, and the service would obviously need to then be running as local system 
to be of benefit (beyond what a normal user could do anyway) AND the installer would have to grant a normal user rights 
to overwrite it.

Certainly possible, but the developer would have to go out of their way to screw that up. And if they did, it still 
wouldn't be because of the OS...

T


On Sep 25, 2011, at 6:18 PM, "Travis Biehn" <tbiehn () gmail com<mailto:tbiehn () gmail com>> wrote:

GloW: there's a lot of 3rd party software that installs itself as windows services.

-Travis

On Sun, Sep 25, 2011 at 9:15 PM, GloW - XD <<mailto:doomxd () gmail com>doomxd () gmail com<mailto:doomxd () gmail 
com>> wrote:
Haha , too good and too true thor !


Maybe he can trick the user into installing on a FAT32 partition first, and THEN get the to execute from a remote share!

Rofl x10.

Agreed , this kind of attack, is NOT deasible in 2011, try maybe, 2006.

Anyhow it has been a pleasure, ending this BS i think once and for all, lookup how winlogon works for one thing, then 
look at how windows creates and maintains a service_table, and then at the dlls, wich are protected ofc, you cannot 
touch msgina.dll,without ALOT of help from a rootkit or something similar, in wich case, why would you need to ?
You could add an admin, hidden, and in simple batfile script (yes i do have my own code but no it is not for kids..), 
this is 10seconds and hidden, so when you have gotten that far, why would you bother to hijack a dll ?

You CANNOT do crap,without complete ADMIN not SYSTEm, ADMIN$ share, and total axcs to all sockets, meaning, all pipe 
control and thats where half of windows exchanges smb shares for one thing, you guys dont seem to know CRAP about 
windows to start with, then have the gall to raise such a frigging ridiculous topic about a non happening, YOUTUBE ONE 
'real' event, of this being useful, or, even just working, and i would look but, you wont, cannot, and will never be 
able to, especially on newer systems of windows7-8.
As i said earlier, enjoy your bs DFLL hijacking, but ms, dont care for it, and whatever patches they instilled, dont 
touch even service_table.. so, they have not given it a high prio,and why shuld they.

This is simply a case of a secteam gaining notoriety, to try and make this a 'big bug!!' , to try and gain brownie 
points from MS. Even tho, i dont believe in many things MS, I know windows system, and how to break it, better than 
many people, and i can tell you now, this whole DLL hijack, is a complete and utter waste of your times.
But... keep on going, maybe MS will send you another 'thankyou' email ;)
xd / <http://crazycoders.com> crazycoders.com<http://crazycoders.com> / #haxnet@Ef





On 26 September 2011 10:52, Thor (Hammer of God) <<mailto:thor () hammerofgod com>thor () hammerofgod com<mailto:thor 
() hammerofgod com>> wrote:
Maybe he can trick the user into installing on a FAT32 partition first, and THEN get the to execute from a remote share!

On Sep 25, 2011, at 5:30 PM, "Travis Biehn" <<mailto:tbiehn () gmail com>tbiehn () gmail com<mailto:tbiehn () gmail 
com>> wrote:

It might be a fun experiment to see what DLLs they're looking for :.)


-Travis

On Sun, Sep 25, 2011 at 2:57 PM, <<mailto:kz20fl () googlemail com><mailto:kz20fl () googlemail com>kz20fl () 
googlemail com<mailto:kz20fl () googlemail com>> wrote:
To replace a service executable you usually need administrator access anyway.


------Original Message------
From: Madhur Ahuja
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full-disclosure-bounces () lists grok org uk<mailto:full-disclosure-bounces () lists grok org uk>
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securityfocus com<mailto:security-basics () securityfocus com>
To: <mailto:full-disclosure () lists grok org uk> <mailto:full-disclosure () lists grok org uk> full-disclosure () 
lists grok org uk<mailto:full-disclosure () lists grok org uk>
Subject: [Full-disclosure] Privilege escalation on Windows using BinaryPlanting
Sent: 25 Sep 2011 19:31

Imagine a situation where I have a Windows system with the restricted
user access and want to get the Administrator access.

There are many services in Windows which run with SYSTEM account.

If there exists even one such service whose executable is not
protected by Windows File Protection, isn't it possible to execute
malicious code (such as gaining Administrator access) simply by
replacing the service executable with malicious one and then
restarting the service.

As a restricted user, what's stopping me to do this ?

Is there any integrity check performed by services.msc or service
itself before executing with SYSTEM account ?

Madhur

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