Re: Privilege escalation on Windows using BinaryPlanting

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

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 () 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>kz20fl () googlemail com<mailto:kz20fl () googlemail 
com>> wrote:
To replace a service executable you usually need administrator access anyway.


------Original Message------
From: Madhur Ahuja
Sender: <mailto:full-disclosure-bounces () lists grok org uk> full-disclosure-bounces () lists grok org 
uk<mailto:full-disclosure-bounces () lists grok org uk>
To: <mailto:security-basics () securityfocus com> security-basics () securityfocus com<mailto:security-basics () 
securityfocus com>
To: <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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