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Chimichurri Reloaded - Giving a Second Life to a 10-year old Windows Vulnerability

This is a kind of follow-up to my last post, in which I discussed a technique that can be used for elevating privileges to SYSTEM when you have impersonation capabilities. In the last part, I expla...

PrintSpoofer - Abusing Impersonation Privileges on Windows 10 and Server 2019

Over the last few years, tools such as RottenPotato, RottenPotatoNG or Juicy Potato have made the exploitation of impersonation privileges on Windows very popular among the offensive security commu...

Windows DLL Hijacking (Hopefully) Clarified

Whenever a “new” DLL hijacking / planting trick is posted on Twitter, it generates a lot of comments. “It’s not a vulnerability!” or “There is a lot of hijackable DLLs on Windows…” are the most com...

Windows Server 2008R2-2019 NetMan DLL Hijacking

What if I told you that all editions of Windows Server, from 2008R2 to 2019, are prone to a DLL Hijacking in the %PATH% directories? What if I also told you that the impacted service runs as NT AUT...

CVE-2020-0863 - An Arbitrary File Read Vulnerability in Windows Diagnostic Tracking Service

Although this vulnerability doesn’t directly result in a full elevation of privileges with code execution as NT AUTHORITY\SYSTEM, it is still quite interesting because of the exploitation “tricks” ...

CVE-2020-0787 - Windows BITS - An EoP Bug Hidden in an Undocumented RPC Function

This post is about an arbitrary file move vulnerability I found in the Background Intelligent Transfer Service. This is yet another example of a privileged file operation abuse in Windows 10. There...

CVE-2020-0668 - A Trivial Privilege Escalation Bug in Windows Service Tracing

In this post, I’ll discuss an arbitrary file move vulnerability I found in Windows Service Tracing. From my testing, it affected all versions of Windows from Vista to 10 but it’s probably even olde...

CDPSvc DLL Hijacking - From LOCAL SERVICE to SYSTEM

A DLL hijacking “vulnerability” in the CDPSvc service was reported to Microsoft at least two times this year. As per their policy though, DLL planting issues that fall into the category of PATH dir...

Give Me Back My Privileges! Please?

I want to tell you the story of a service account which lost all its powers (a.k.a. privileges). Windows world is getting increasingly ruthless and when the system considers you are not worthy, thi...

Weaponizing Privileged File Writes with the USO Service - Part 2/2

In the previous post, I showed how the USO client could be used to interact with the USO service and thus have it load the windowscoredeviceinfo.dll DLL on demand with the StartScan option. I wasn’...