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Abusing Exchange Web Service - Part 1

Outlook Web Access (OWA) has been one of the consistently viable attack vectors for pentesters and bad guys alike for many years. Frequently, an attacker will obtain valid credentials by brute forcing OWA portals exposed to the internet. Once credentials are obtained an attacker can then access the target network via any other single factor […]

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Why Security Awareness Training Fails

First, let's talk about what "failure" is and is not in the context of Security Awareness Training (SAT). Failure is not when a company gets breached due to social engineering. Wait, what?? All the outstanding training in the world does not guarantee that an individual will follow it when the moment of testing occurs. Soldiers are trained […]

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Assisted directory brute forcing

Very frequently during a web application assessment a pentester may begin by fingerprinting what web frameworks and libraries are used by a given application.  Possibly by running a tool such as blindelephant or whatweb.  Commonly though the tester may just notice a unique identifier in the web traffic or URL.  Consider the following: So simply […]

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crEAP - Harvesting Users on Enterprise Wireless Networks

With the demands of a mobile workforce, wireless networks in enterprise environments are quite common.  Typically, enterprise wireless networks employ WPA-Enterprise security features, which removes the need for preshared keys (WPA2-PSK) that float around between employees creating security concerns of sharing or unauthorized access upon termination, etc. These WPA-Enterprise (802.1x) wireless networks often make use of […]

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[UPDATE] Creating your own private botnet for scanning.

This is an update to an older post that can be found here.  Since createProxy's initial release, we've received some great feedback and, as a result, we made some improvements.   There were several shortcomings with the previous version, all of which rested on the use of ProxyChains.  ProxyChains is old, outdated, and failed to […]

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Drone Code Execution (Part 1)

Recently some of us here at shellntel have been building quadcopters and autonomous vehicles for fun.  We are big fans of the Pixhawk flight controller for its awesome autonomous capabilities.  We are also big fans of privacy.  As much as we like to build and fly these drones, we realize doing so in an irresponsible […]

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PowerShell Memory Scraping for Credit Cards

During the post exploitation phase of a penetration test, I like to provide the client with examples of what could happen if a breach were to take place.  One of the most common examples of this is credit card theft. To demonstrate this threat, I created a PowerShell memory scraper against whatever application (many times […]

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Intro To Active Directory Delegation

One of the most frequent questions I get from my CircleCityCon/DerbyCon Active Directory talk goes something like "You recommend that we delegate permissions in AD (as opposed to just dropping everything in Domain Admins), but I just inherited this domain and have no idea what delegation is. Help?" Well good news: 1) Delegation in AD isn't […]

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Using PowerShell & Unicorn to Get Persistence

Recently I was on an engagement where I received a meterpreter shell only to have it die within minutes before I could establish persistence. Talk about frustration! I've never had the best of luck with Metasploit's s4u_persistence module. Just to make sure, I did a quick test. I established a shell over tcp/53 on my Windows 7 […]

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Creating your own private botnet for scanning.

[ UPDATE]  The tool has been re-written.  New details can be found here: http://www.shellntel.com/blog/2015/9/9/update-creating-your-own-private-botnet-for-scanning Often while scanning a network with nmap or other similar tools, at some point a NIDS or firewall will detect and block me.  This is irritating.  I wondered, what would happen if I could route my scans/attacks through a series of proxy […]

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