Message-ID: <CAJB2Jzu5fD9fL1bqgAqYbHWaPo+P87e-6YV76k8d0RrmmWOGQg@mail.gmail.com>
Date: Mon, 26 Sep 2011 10:01:36 +0200
From: Mario Vilas <mvilas@...il.com>
To: "Thor (Hammer of God)" <thor@...merofgod.com>
Cc: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: Re: Privilege escalation on Windows using
	BinaryPlanting

This is a bit old (2007) but it shows this kind of bug perfectly well.
http://securitytracker.com/id/1018588

So I can imagine one scenario in which DLL hijacking would make sense - if
the developers neglected to properly set the directory permissions and it
got reported as a vuln, the patch *could* have been to properly set the
permissions on *files* and forget to set them on the directory.

It'd be an extremely stupid way to patch. Then again, it's an extremely
stupid bug to begin with, so... :)

On Mon, Sep 26, 2011 at 3:36 AM, Thor (Hammer of God)
<thor@...merofgod.com>wrote:

>  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@...il.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 < <doomxd@...il.com>
> doomxd@...il.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 / #haxnet@Ef
>>
>>
>>
>>
>>
>> On 26 September 2011 10:52, Thor (Hammer of God) < <thor@...merofgod.com>
>> thor@...merofgod.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" < <tbiehn@...il.com>
>>> tbiehn@...il.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, < <kz20fl@...glemail.com><kz20fl@...glemail.com>
>>> kz20fl@...glemail.com> wrote:
>>>
>>>> To replace a service executable you usually need administrator access
>>>> anyway.
>>>>
>>>>
>>>> ------Original Message------
>>>> From: Madhur Ahuja
>>>> Sender:  <full-disclosure-bounces@...ts.grok.org.uk><full-disclosure-bounces@...ts.grok.org.uk>
>>>> full-disclosure-bounces@...ts.grok.org.uk
>>>> To: <security-basics@...urityfocus.com><security-basics@...urityfocus.com>
>>>> security-basics@...urityfocus.com
>>>> To: <full-disclosure@...ts.grok.org.uk><full-disclosure@...ts.grok.org.uk>
>>>> full-disclosure@...ts.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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>>>
>>>
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>>
>>
>> _______________________________________________
>> Full-Disclosure - We believe in it.
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>
>
>
>  --
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>
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-- 
“There's a reason we separate military and the police: one fights the enemy
of the state, the other serves and protects the people. When the military
becomes both, then the enemies of the state tend to become the people.”

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