Book Image

Mastering Kali Linux for Advanced Penetration Testing - Third Edition

By : Vijay Kumar Velu, Robert Beggs
Book Image

Mastering Kali Linux for Advanced Penetration Testing - Third Edition

By: Vijay Kumar Velu, Robert Beggs

Overview of this book

This book takes you, as a tester or security practitioner, through the reconnaissance, vulnerability assessment, exploitation, privilege escalation, and post-exploitation activities used by pentesters. To start with, you'll use a laboratory environment to validate tools and techniques, along with an application that supports a collaborative approach for pentesting. You'll then progress to passive reconnaissance with open source intelligence and active reconnaissance of the external and internal infrastructure. You'll also focus on how to select, use, customize, and interpret the results from different vulnerability scanners, followed by examining specific routes to the target, which include bypassing physical security and the exfiltration of data using a variety of techniques. You'll discover concepts such as social engineering, attacking wireless networks, web services, and embedded devices. Once you are confident with these topics, you'll learn the practical aspects of attacking user client systems by backdooring with fileless techniques, followed by focusing on the most vulnerable part of the network – directly attacking the end user. By the end of this book, you'll have explored approaches for carrying out advanced pentesting in tightly secured environments, understood pentesting and hacking techniques employed on embedded peripheral devices.
Table of Contents (21 chapters)
Title Page
About Packt

Chapter 3. Active Reconnaissance of External and Internal Networks

The main goal of the active reconnaissance phase is to collect and weaponize information about the target as much as possible in order to facilitate the exploitation phase of the kill chain methodology.

We have seen in the last chapter how to perform passive reconnaissance using OSINT, which is almost undetectable and can yield a significant amount of information about the target organization and its users.

Active reconnaissance builds on the results of OSINT and passive reconnaissance and emphasizes more focused probes to identify the path to the target and the exposed attack surface of the target. In general, complex systems have a greater attack surface, and each surface may be exploited and then leveraged to support additional attacks.

Although active reconnaissance produces more useful information, interactions with the target system may be logged, triggering alarms by protective devices, such as firewalls, Intrusion Detection...