How secure is your network?

David Dodd

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The goal of the scanning phase is to learn more information about the target environment and discover openings by interacting with that target environment. This article will look at some of the most useful scanning tools freely available today and how to best use them. During this process we'll perform a number of scans. Scan Types Network sweeping - Basic technique used to determine which of a range of IP addresses map to live hosts. Network tracing – A facility for tracing the route of a computer that is connected to the Internet. Port scanning – software application designed to probe a network host for open ports. OS fingerprinting – analysis of the TCP/IP stack to determine target operating system. Version scanning – Interacting with different ports to determine protocols they speak and possibly the version of service listening on given port. Vulnerability sca... (more)

Malware Analysis | Part 2

In a previous article [1], I described how to obtain a memory image from a Windows computer that would allow forensic analysis. I briefly discussed using F-Response TACTICAL [2] to get the memory image, and then Volatility [3] and Mandiant Redline [4] for further investigation. In this paper, I dive more deeply into Redline and Volatility. To begin, I review a raw memory dump of a known malware variant (see the "Malware Image" box) with Mandiant Redline. After firing up Redline, I chose By Analyzing a Saved Memory File under Analyze Data and browsed to the location of the memory... (more)

Post Exploitation Using Metasploit Pivot and Port Forward

The Metasploit Framework is a penetration testing toolkit, exploit development platform, and research tool. The framework includes hundreds of working remote exploits for a variety of platforms. Payloads, encoders, and nop slide generators can be mixed and matched with exploit modules to solve almost any exploit-related task. A very nice feature in Metasploit is the ability to pivot through a Meterpreter session to the network on the other side. This tutorial walks you through how this is done once you have a Meterpreter session on a foreign box. We begin right after a client sid... (more)

Malware Analysis | Part 1

Having your network environment protected with the latest virus protection, control what software is installed and allowed to run, restrict ingress and egress network access, protect web browsing, limit user account access, update security patches, change management practices, etc. All these efforts are critical to follow in the corporate environment but all will fall short if you don't have the proper monitoring in place to detect badness on your network and to respond quickly and effectively when it happens. When your network has the proper monitoring in place and knowledgeable... (more)

Planning, Scoping and Recon Techniques

The purpose of this article is to describe some tools and techniques in performing the planning, scoping, and recon portion of a penetration test. In covering these tools and techniques the reader will learn how to use them to find vulnerabilities in their organization and help improve security posture. Some other names for this first phase of penetration testing are; OSINT (Open Source Intelligence), Footprinting, Discovery, and Cyberstalking. Introduction During reconnaissance we'll gather information from public sources to learn about the target and try to find what is importan... (more)