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Re: [Full-disclosure] Privilege escalation on Windows using BinaryPlanting
From: kz20fl () googlemail com
Date: Sun, 25 Sep 2011 18:57:28 +0000

To replace a service executable you usually need administrator access anyway.

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


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