Unravelling .NET with the Help of WinDBG

This blog was authored by Paul Rascagneres and Warren Mercer.Introduction.NET is an increasingly important component of the Microsoft ecosystem providing a shared framework for interoperability between different languages and hardware platforms. Many Microsoft tools, such as PowerShell, and other...

A week in security (July 10 – July 16)

Last week, we took a look at some of your malware infection stories, took a stroll through the basics of PowerShell, explored a piece of .NET malware, and shone the spotlight on the Petya ransomware family. Elsewhere, the following stories were taking place: Latest updates for Consumers...

NetworkRecon: PowerShell to Identify Network Vulnerabilities!

PenTestIT RSS Feed As PowerShell becomes more prevalent in the Windows environment, so will it's use for vulnerability assessment and penetration tests. I have covered a few of them earlier such as PowerSploit, PSAttack. However none of the ones I mentioned help you detect network vulnerabilities...

WinRM Command Runner

This module runs arbitrary Windows commands using the WinRM Service This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework require 'net/winrm/connection' class MetasploitModule 'WinRM Command Runner', 'Description' = %q This...

Virtual Apps and Desktops: Logon Duration in MonitorData.Session Table shows "Null"

Logon Duration inMonitorData.Session Table in Monitoring Database shows "Null" value for all sessions and hence Director does not report Average logon Duration for Sessions. Restarting the Monitoring Service on Delivery Controllers does not fix the issue. We used the below scripts to ensure thatO...

Skype for Business 2016 - Cross-Site Scripting Vulnerability

Exploit for windows platform in category remote exploits Exploit Title: Skype for Business 2016 XSS Injection - CVE-2017-8550 Exploit Author: @nyxgeek - TrustedSec Date: 2017-04-10 Vendor Homepage: www.microsoft.com Versions: 16.0.7830.1018 32-bit & 16.0.7927.1020 64-bit or lower Requirements:...

Windows PowerShell Remote Code Execution Vulnerability (KB4025872)

This host is missing an important security update according to Microsoft KB4025872. SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescripti...

Microsoft Windows Multiple Vulnerabilities (KB4025337)

This host is missing a critical security update according to Microsoft KB4025337 SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Skype for Business 2016 - Cross-Site Scripting

Skype for Business 2016 - Cross-Site Scripting Exploit Title: Skype for Business 2016 XSS Injection - CVE-2017-8550 Exploit Author: @nyxgeek - TrustedSec Date: 2017-04-10 Vendor Homepage: www.microsoft.com Versions: 16.0.7830.1018 32-bit & 16.0.7927.1020 64-bit or lower Requirements: Originating...

Microsoft Windows PowerShell Remote Code Execution Vulnerability

Microsoft Windows, etc. are a series of operating systems released by Microsoft, U.S.A. PowerShell is one of the command line programs. A remote code execution vulnerability exists in PowerShell in Microsoft Windows. An attacker can exploit this vulnerability to execute code in a PowerShell remot...

Skype for Business 2016 - Cross-Site Scripting

Exploit Title: Skype for Business 2016 XSS Injection - CVE-2017-8550 Exploit Author: @nyxgeek - TrustedSec Date: 2017-04-10 Vendor Homepage: www.microsoft.com Versions: 16.0.7830.1018 32-bit & 16.0.7927.1020 64-bit or lower Requirements: Originating machine needs Lync 2013 SDK installed as well a...

CVE-2017-8565

Windows PowerShell in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability when PSObject wraps a CIM Instance, aka "Windows PowerShel...

CVE-2017-8565

Windows PowerShell in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability when PSObject wraps a CIM Instance, aka "Windows PowerShel...

Remote code execution

Windows PowerShell in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability when PSObject wraps a CIM Instance, aka "Windows PowerShel...

CVE-2017-8565

CVE-2017-8565 is a Windows PowerShell remote code execution vulnerability triggered when PSObject wraps a CIM Instance. Connected sources describe in detail that deserialization via PSObject, LosFormatter, ObjectStateFormatter (and related gadget chains) can enable remote code execution in PowerS...

CVE-2017-8565

Windows PowerShell in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability when PSObject wraps a CIM Instance, aka "Windows PowerShel...

Learning PowerShell: The basics

I bet I went about learning PowerShell the wrong way, so I may need your help, readers of this blog. If only to organize my knowledge and use it for the fight against malware and not just to figure out how it was used in malware. The first serious look I had at PowerShell was when I was trying to...

Security update for the Windows PowerShell remote code execution vulnerability in Windows Server 2008: July 11, 2017

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Windows PowerShell Remote Code Execution Vulnerability

A remote code execution vulnerability exists in PowerShell when PSObject wraps a CIM Instance. An attacker who successfully exploited this vulnerability could execute malicious code on a vulnerable system. In an attack scenario, an attacker could execute malicious code in a PowerShell remote...

WinPayloads: Generate Undetectable Windows Payloads!

PenTestIT RSS Feed An older post of mine - MicroSploit dealt with generating backdoored documents for the Office platform. This post is about another open source framework, called WinPayloads which helps you create custom malicious payloads for the Microsoft Windows operating system. What is...