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

Hiding evidence of an attack

Once a system has been exploited, the attacker must cover their tracks to avoid detection, or at least make reconstruction of the event more difficult for the defender.

An attacker may completely delete the Windows event logs (if they are being actively retained on the compromised server). This can be done via a command shell to the system, using the following command:

C:\> del %WINDIR%\*.log /a/s/q/f

The command directs for all of the logs to be deleted (/a), including all files from subfolders (/s). The /q option disables all of the queries, asking for a yes or no response, and the /f option forcibly removes the files, making recovery more difficult.

To wipe out specific recorded files, attackers must keep track of all the activities that have been performed on the compromised system.

This can also be done from the Meterpreter prompt by using clearev. As shown in the following screenshot, this will clear the application, system, and security logs from the target...