Linux Basics for Hackers - k1ll4-cyber.github.io

1 ASPIRING COVERS. Linux Basics . hacker ? KALI Linux . START HERE. AND PYTHON 3. FOR H ACKERS. LINU X Basics FOR Hackers . If you're getting started along the exciting path of Keep your internet activity stealthy using Tor, proxy hacking, cybersecurity, and pentesting, Linux Basics servers, VPNs, and encrypted email G E T T I N G S T A R T E D N E T W O R K I N G, W I T H. for Hackers is an excellent first step. Using Kali Linux , Write a bash script to scan open ports for potential S C R I P T I N G, A N D S E C U R I T Y I N K A L I. an advanced penetration testing distribution of Linux , targets you'll learn the Basics of using the Linux operating system and acquire the tools and techniques you'll Use and abuse services like MySQL, Apache web need to take control of a Linux environment.

2 Server, and OpenSSH OCCUPY THE WEB. First, you'll learn how to install Kali on a virtual machine Build your own hacking tools, such as a remote video and get an introduction to basic Linux concepts. Next, spy camera and a password cracker you'll tackle broader Linux topics like manipulating text, Hacking is complex, and there is no single way in. Why controlling file and directory permissions, and managing not start at the beginning with Linux Basics for Hackers ? user environment variables. You'll then focus in on foun- dational hacking concepts like security and anonymity ABOUT THE AUTHOR. and learn scripting skills with bash and Python.

3 OccupyTheWeb is an infosec consultant, forensic Practical tutorials and exercises throughout will reinforce investigator, and trainer with more than 20 years in and test your skills as you learn how to: the industry. He maintains the Hackers -Arise training site ( ) and trains US. Cover your tracks by changing your network informa- military personnel, Department of Defense contractors, tion and manipulating the rsyslog logging utility and federal employees in information security and Write a tool to scan for network connections, and hacking. connect and listen to wireless networks OCCUPYTHEWEB. T H E F I N E ST I N G E E K E N T E RTA I N M E N T.

4 W w $ ($ CDN). COMPUTERS/SECURITY. SHELVE IN: WOW! eBook WOW! eBook Linux Basics for Hackers WOW! eBook WOW! eBook Linux Basics for Hackers Getting Started with Networking, Scripting, a n d S e c u r i t y i n K a l i b y O c cu p y T h e W e b San Francisco WOW! eBook Linux Basics FOR Hackers . Copyright 2019 by OccupyTheWeb. All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. ISBN-10: 1-59327-855-1.

5 ISBN-13: 978-1-59327-855-7. Publisher: William Pollock Production Editors: Serena Yang and Meg Sneeringer Cover Illustration: Josh Ellingson Interior Design: Octopod Studios Developmental Editor: Liz Chadwick Technical Reviewer: Cliff Janzen Copyeditor: Barton D. Reed Compositors: Serena Yang and Meg Sneeringer Proofreader: Paula L. Fleming Indexer: JoAnne Burek For information on distribution, translations, or bulk sales, please contact No Starch Press, Inc. directly: No Starch Press, Inc. 245 8th Street, San Francisco, CA 94103. phone: ; Library of Congress Cataloging-in-Publication Data Names: OccupyTheWeb, author. Title: Linux Basics for Hackers : getting started with networking, scripting, and security in Kali / OccupyTheWeb.

6 Description: First edition. | San Francisco : No Starch Press, Inc., [2018]. Identifiers: LCCN 2018030544 (print) | LCCN 2018032646 (ebook) | ISBN. 9781593278564 (epub) | ISBN 159327856X (epub) | ISBN 9781593278557 (print). | ISBN 1593278551 (print) | ISBN 9781593278564 (ebook) | ISBN 159327856X. (ebook). Subjects: LCSH: Penetration testing (Computer security) | Kali Linux . |. Hackers . | Operating systems (Computers). Classification: LCC (ebook) | LCC O325 2018 (print) |. DDC LC record available at No Starch Press and the No Starch Press logo are registered trademarks of No Starch Press, Inc. Other product and company names mentioned herein may be the trademarks of their respective owners.

7 Rather than use a trademark symbol with every occurrence of a trademarked name, we are using the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The information in this book is distributed on an As Is basis, without warranty. While every precaution has been taken in the preparation of this work, neither the author nor No Starch Press, Inc. shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information contained in it. WOW! eBook I dedicate this book to my three incredible daughters.

8 You mean the world to me. WOW! eBook WOW! eBook About the Author OccupyTheWeb (OTW) is the pseudonym for the founder and primary writer for the hacker and pentester training website, He is a former college professor and has over 20 years of expe- rience in the information technology industry. He has trained Hackers throughout the US, including branches of the US military (Army, Air Force, and Navy) and the US intelligence community (CIA, NSA, and DNI). He is also an avid mountain biker and snow boarder. About the Technical Reviewer Since the early days of Commodore PET and VIC-20, technology has been a constant companion (and sometimes an obsession!)

9 To Cliff Janzen. Cliff discovered his career passion when he moved to information security in 2008 after a decade of IT operations. Since then, Cliff has had the great fortune to work with and learn from some of the best people in the industry including OccupyTheWeb and the fine people at No Starch during the production of this book. He is happily employed as a security consultant, doing everything from policy review to penetration tests. He feels lucky to have a career that is also his favorite hobby and a wife that supports him. WOW! eBook WOW! eBook Brief Contents Acknowledgments .. xix Introduction .. xxi Chapter 1: Getting Started with the Basics .

10 1. Chapter 2: Text Manipulation .. 19. Chapter 3: Analyzing and Managing Networks .. 29. Chapter 4: Adding and Removing Software .. 39. Chapter 5: Controlling File and Directory Permissions .. 49. Chapter 6: Process Management .. 61. Chapter 7: Managing User Environment Variables .. 71. Chapter 8: Bash Scripting .. 81. Chapter 9: Compressing and Archiving .. 93. Chapter 10: Filesystem and Storage Device Management .. 101. Chapter 11: The Logging System .. 111. Chapter 12: Using and Abusing Services .. 121. Chapter 13: Becoming Secure and Anonymous .. 139. Chapter 14: Understanding and Inspecting Wireless Networks .. 153. Chapter 15: Managing the Linux Kernel and Loadable Kernel Modules.