Penetration Tester's Open Source Toolkit / Edition 2

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Overview

Penetration testing a network requires a delicate balance of art and science. A penetration tester must be creative enough to think outside of the box to determine the best attack vector into his own network, and also be expert in using the literally hundreds of tools required to execute the plan. This second volume adds over 300 new pentesting applications included with BackTrack 2 to the pen tester's toolkit. It includes the latest information on Snort, Nessus, Wireshark, Metasploit, Kismet and all of the other major Open Source platforms.

• Perform Network Reconnaissance Master the objectives, methodology, and tools of the least understood aspect of a penetration test.
• Demystify Enumeration and Scanning Identify the purpose and type of the target systems, obtain specific information about the versions of the services that are running on the systems, and list the targets and services.
• Hack Database Services Understand and identify common database service vulnerabilities, discover database services, attack database authentication mechanisms, analyze the contents of the database, and use the database to obtain access to the host operating system.
• Test Web Servers and Applications Compromise the Web server due to vulnerabilities on the server daemon itself, its unhardened state, or vulnerabilities within the Web applications.
• Test Wireless Networks and Devices Understand WLAN vulnerabilities, attack WLAN encryption, master information gathering tools, and deploy exploitation tools.
• Examine Vulnerabilities on Network Routers and Switches Use Traceroute, Nmap, ike-scan, Cisco Torch, Finger, Nessus, onesixtyone, Hydra, Ettercap, and more to attack your network devices.
• Customize BackTrack 2
Torque BackTrack 2 for your specialized needs through module management, unique hard drive installations, and USB installations.
• Perform Forensic Discovery and Analysis with BackTrack 2
Use BackTrack in the field for forensic analysis, image acquisition, and file carving.
• Build Your Own PenTesting Lab Everything you need to build your own fully functional attack lab.

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Editorial Reviews

From the Publisher

"Jeremy Faircloth continues to write about computer and network security in ways that help the InfoSec community. In Penetration Tester's Open Source Toolkit, Third Edition he combines his sharp insight into a wide variety of technologies, diverse penetration testing approaches and several penetration testing tools (then showcases these tools in action in the case study in each chapter) so the student of penetration testing can go out and get it done. This is just the kind of writing we should be expecting from our front runners in IT to be doing to support our Enterprise."--Tim Hoffman, President, Alida Connection

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Product Details

  • ISBN-13: 9781597492133
  • Publisher: Elsevier Science
  • Publication date: 11/30/2007
  • Edition number: 2
  • Pages: 592
  • Sales rank: 1,002,853
  • Product dimensions: 7.30 (w) x 9.00 (h) x 1.70 (d)

Meet the Author

Jeremy Faircloth (Security+, CCNA, MCSE, MCP+I, A+) is a Senior Principal IT Technologist for Medtronic, Inc., where he and his team architect and maintain enterprise-wide client/server and Web-based technologies. He is a member of the Society for Technical Communication and frequently acts as a technical resource for other IT professionals through teaching and writing, using his expertise to help others expand their knowledge. As a systems engineer with over 19 years of real-world IT experience, he has become an expert in many areas including Web development, database administration, enterprise security, network design, large enterprise applications and project management. Jeremy is also a contributing author to over a dozen technical books covering a variety of topics.

Chris Hurley is a Senior Penetration Tester in the Washington, DC area. He has more than 10 years of experience performing penetration testing, vulnerability assessments, and general INFOSEC grunt work. He is the founder of the WorldWide WarDrive, a four-year project to assess the security posture of wireless networks deployed throughout the world. Chris was also the original organizer of the DEF CON WarDriving contest. He is the lead author of WarDriving: Drive, Detect, Defend (Syngress Publishing, ISBN: 19318360305). He has contributed to several other Syngress publications, including Penetration Tester's Open Source Toolkit (ISBN: 1-5974490210), Stealing the Network: How to Own an Identity (ISBN: 1597490067), InfoSec Career Hacking (ISBN: 1597490113), and OS X for Hackers at Heart (ISBN: 1597490407). He has a BS from Angelo State University in Computer Science and a whole bunch of certifications to make himself feel important.

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Read an Excerpt

Penetration Tester's Open Source Toolkit


By Jeremy Faircloth

SYNGRESS

Copyright © 2011 Elsevier Inc.
All right reserved.

ISBN: 978-1-59749-628-5


Chapter One

Tools of the trade

INFORMATION IN THIS CHAPTER:

• Objectives

• Approach

• Core Technologies

• Open Source Tools

• Case Study: The Tools in Action

• Hands-On Challenge

The quality of the tools that we use as penetration testers is part of what determines the quality of work that we perform. Other parts are, of course, skill, experience, and imagination. By building an excellent toolkit, we can better perform our penetration testing work and do a better, faster, and higher quality job. While the rest of this book will be focusing on individual tools and how to use them, in this chapter we will be talking about toolkits which contain a number of the tools we'll be discussing later and more.

We will also be talking about some of the technologies used to make carrying around your toolkit easier and safer. A good set of tools should always be stored in a good toolbox. In addition, we'll touch on some of the tools that you can use to build target systems for penetration testing. In Chapter 10, we'll talk about building a test lab, but here we'll talk about some of the kits that you can use within that lab.

This chapter may not be quite as interesting as the remaining chapters in this book since we will not be doing any actual penetration testing examples here. However, it is very important to have a solid foundation in the general tools available to you as a penetration tester prior to learning how to use those tools in real-world scenarios. You'll find that it saves you a lot of time later when we demonstrate using a tool if you already have a toolkit which contains it.

1.1 OBJECTIVES

Our objectives for this chapter are to learn which toolkits exist in the open source world for penetration testing, learn how those toolkits are built and how to modify them, and discuss some of the kits which exist to build target systems. To meet these objectives, we'll go over the general approach of how and why these kits are made, then move into the core technologies of how they work. We'll then go over some open source toolkits, which exist today, and talk about how each applies to your work in penetration testing. Lastly, we'll do a case study using one of the available toolkits and give you a chance to show what you've learned in a hands-on challenge.

Many open source penetration testing toolkits exist today and are built to reduce your work. In the past, performing a penetration test meant that every penetration tester built up a set of tools that they prefer using, kept them updated manually, maintained master copies in case of corruption, and had to manually research how to integrate new tools as they became available. This was where a great deal of the penetration tester's time was spent versus getting into the "real" work of testing a client's security. This was generally not considered billable time and was a real challenge.

1.2 APPROACH

The general approach to building penetration testing toolkits is to minimize the amount of work spent maintaining tools and maximize the amount of time spent performing penetration testing. To do this, you generally start with a list of tools that are commonly used for either the specific type(s) of penetration testing that you are performing or a list of tools that can be used for a wide variety of purposes. This is akin to either selecting a knife custom designed for a specific purpose (e.g., a thin bladed knife for filleting) or grabbing a Swiss Army knife to cover a variety of situations.

Generally if you're building your own penetration testing toolkit from scratch, you'll take the approach of selecting your favorite or most commonly used tools. If you are building a toolkit for public use, it's usually best to include a wider variety of tools so that more general penetration testing needs can be met. This is the approach used by most of the people who put together these kits today.

The next decision that you have is the type of operating system that you'd like to use. There are a number of penetration testing tools which are built to run under Windows, but there are typically more tools available under the Linux platform. The challenge there is to determine which Linux distribution to use since there are such a wide variety to choose from. Some examples of popular Linux distributions are:

• Ubuntu

• Fedora

• openSUSE

• Debian GNU/Linux

• Mandriva Linux

• Slackware Linux

• Gentoo Linux

Many of these have served as the foundation for penetration testing toolkits over the years and your choice will often be driven by personal preference as much as any technical reasoning. Each distribution has their own unique release schedule and goals, which may play a part in your decision as well.

With the list of tools and the operating system choice out of the way, now it's time to determine how your penetration test toolkit will execute. Do you want to install the operating system and all tools on a desktop/laptop/etc. permanently or within a virtual machine? Would you prefer to boot off of an optical disk (CD/ DVD)? Or maybe booting and running off of a flash drive or SD card is your preference. Whichever of these options works best for your needs is obviously the direction that you should go. Each has its own pros and cons.

For example, if you choose to do an on-disk installation, you should be aware that any corruption from a bad tool install or an erroneous command could mean reinstalling everything from scratch or restoring from a backup. On the other hand, you can make changes to your toolkit easily and know that those changes will be available for you the next time that you go to use the system. This tends to be a less portable solution, but takes advantage of the speed of the disk and makes saving changes easy.

Booting off of a CD or DVD works great for some toolkits, however, not all operating systems support running in this manner. In addition, you need to be sure that the machine you'll be using has a compatible drive and ensure that your disk doesn't get scratched or otherwise damaged. The risk of corruption is lower since changes are wiped out after the machine using the CD/DVD is powered off, but that also limits your ability to save changes that you actually want to keep such as tool updates.

Using a USB drive or SD card is another option similar to using a CD/DVD, but there are some additional advantages and disadvantages here. Not all systems support booting off of a USB drive and even fewer support booting off of an SD card so compatibility can be a problem. However, with correct partitioning, you can build a USB/SD penetration testing toolkit which supports persistent changes, meaning that all modifications that you make to the booted OS are saved to a special partition and reapplied the next time the toolkit is booted up. This is considered a "persistent Live USB" build and has the advantage of being able to be returned to a baseline state by removing the persistence partition. Alternately, you can build an operating system on the USB drive that is read/write like a normal hard disk.

Whether you're installing on a drive or building a bootable image, your next step is to install your tools. Many of the open source tools available share dependencies and in some cases conflict on the version of those dependencies that they support. While you may want to use the latest version of a specific driver, for example, there may be something new in that version that your chosen tools don't support. Always keep this in mind when doing your tool installations. The process of resolving incompatibilities and ensuring that the correct dependencies are there is very time consuming and requires a lot of effort.

1.3 CORE TECHNOLOGIES

There are a few core technologies that you need to be aware of when building your penetration testing toolkit. In this section, we'll talk about LiveCDs and how they work as well as some basics on how to build or modify a LiveCD. We'll talk about International Organization for Standardization (ISO) images and how to use those as well. Next, we'll go over how to make a bootable USB drive and then finish up by talking about how to make a persistent LiveCD environment.

1.3.1 LiveCDs

A LiveCD is basically a CD or DVD that is written with a bootable version of an operating system modified so that there is no need to write files to the disk the system is booted from. This allows you to use read-only media to boot a system into a fully functional operating system, leaving no data written to the hard disks of the system that you're using. It isn't even required for the system to have a hard disk since everything it needs will be coming off of the optical media.

LiveCDs started becoming popular in the early to mid 1990s and it's now common to find LiveCDs that support a majority of the common operating systems or distributions. Since most operating systems do need a place for temporary files, LiveCDs are built to create this temporary file area in memory or (less commonly) use an existing location on the system's hard disk. Files created while using the LiveCD that the user wants to keep can usually be written to a USB drive or a hard disk partition as well.

1.3.1.1 Creating a LiveCD

Depending on the operating system that you're using, a number of options exist on how to create your LiveCD. For Windows, one of the most popular methods of creating a LiveCD is to use Bart's Preinstalled Environment (BartPE) Builder to create a Windows-based bootable CD or DVD. This is free software and is available at http://www.nu2.nu/pebuilder/. Using BartPE in combination with an original licensed Microsoft Windows DVD allows you to generate a bootable image very quickly and easily. We'll demonstrate the use of this tool in the Open source tools section of this chapter.

Creating a LiveCD with Linux is a little more complex and can vary depending on distribution. For Ubuntu, this involves creating a number of directories and installing some packages on an existing Linux system, creating a copy of the operating system, modifying it to work properly, building out the appropriate directory structures, then finally burning the CD or DVD. All of the steps and a detailed tutorial on this process can be found at http://ubuntuforums.org/showthread.php?t=688872.

Using Fedora, the process is a little more streamlined. There is a LiveCD-tools package available which includes a tool called LiveCD-creator. This tool effectively goes through the following steps:

• Sets up a file for the ext3 file system that will contain all the data comprising the LiveCD

• Loopback mounts that file into the file system so there is an installation root

• Bind mounts certain kernel file systems (/dev, /dev/pts, /proc, /sys, /selinux) inside the installation root

• Uses a configuration file to define the requested packages and default configuration options. The format of this file is the same as is used for installing a system via kickstart.

• Installs, using yum, the requested packages into the installation using the given repositories in the kickstart file

• Optionally runs scripts as specified by the LiveCD configuration file

• Relabels the entire installation root (for SELinux)

• Creates a LiveCD-specific initramfs that matches the installed kernel

• Unmounts the kernel file systems mounted inside the installation root

• Unmounts the installation root

• Creates asquashfs file system containing only the defaultext3/4file (compression)

• Configures the boot loader

• Creates an iso9660 bootable CD/DVD

This greatly simplifies the LiveCD creation process if Fedora is the distribution that you are using. Full documentation on this process is available at http:// fedoraproject.org/wiki/How_to_create_and_use_Fedora_Live_CD.

1.3.1.2 Modifying LiveCDs

Modifying LiveCDs is very similar to creating a LiveCD from scratch except that you have an easier foundation to work from. Basically, the contents of the LiveCD are extracted into a working area and modified as needed. This can include the addition of new files, modification of existing files, or deletion of files as required. Where this becomes complex is when you need to perform installations of packages and then build a new LiveCD using the updated versions.

To do this, there are a couple of methods that you can use. First, you can perform an install of the operating system to a machine, update all of the files or packages necessary, and then rebundle that modified version as a new LiveCD. Alternately, you can take the compressed images created when building some types of LiveCDs, mount those images, update them, and then use the updated images to create a new LiveCD. This is generally the method used with Knoppix as an example. An example of a similar method for Ubuntu can be found at https://help .ubuntu.com/community/LiveCDCustomization.

(Continues...)



Excerpted from Penetration Tester's Open Source Toolkit by Jeremy Faircloth Copyright © 2011 by Elsevier Inc.. Excerpted by permission of SYNGRESS. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.
Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

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Table of Contents

Defining the Scope ISSAF and OSSTMM Metasploit v3
BackTrack v2
Kismet IDS Toolkits: WireShark, Snort, Nessus Tools: Bluebugger, Wyd, SIPcrack Fuzzing Tools Testing Web Applications Botnets
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  • Anonymous

    Posted May 27, 2008

    A reviewer

    This book with the CD enclosed is great, the book gives you BackTrack 2 lve cd which includes all of the needed tools to conduct your own pen testing. The only draw back is that the book does not go into detail about how to use alot of the 'goodies' on the cd, but its up to you to try out! I have read many books on the subject and nothing beats it yet!

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