Contribute to stevelorenz/Security-and-Networking-eBooks-Collection development by creating an account on GitHub. Get Instant Access to PDF File: #1ca How To Hack: Hacking Secrets Exposed : A Beginner's Guide By Srikanth Ramesh [KINDLE PDF. Want to Learn Hacking But Don't Know Where to Start..? If so, this book is specially designed for you. Hacking Secrets Exposed is an easy-to-follow, complete.

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hacking secrets exposed a beginners guide (HOW TO HACK HACKING SECRETS EXPOSED A BEGINNER'S GUIDE By:) Download PDF. Full text of "How To Hack: Hacking Secrets Exposed (A Beginner's Guide)" The word “Hack” or “Hacking” used extensively throughout this book shall be. Recommendation in selecting the most effective book How To Hack: Hacking Secrets Exposed: A. Beginner's Guide By Srikanth Ramesh to.

A Beginner's Guide. But don't know where to start? If so, this book is specially designed for you.

Hacking Secrets Exposed is an easy-to-follow, complete course on ethical hacking that takes readers right from the basics to some of the highly advanced concepts.

The book starts with basic concepts like footprinting, scanning, network reconnaissance, OS fingerprinting etc. The following are some of the highlighting features of the book: Learn Hacking from the Basics. Extremely Easy to Follow.

No Prior Knowledge of Hacking is Required. Most of the popular books that are currently available in the market are suitable only for those who have a considerable amount of background knowledge in the field.

Also, these books may dive too much into the theoretical part and use a lot technical jargon making it hard for beginners to follow and comprehend. This book lays the foundation required to start off your career as an ethical hacker where you can begin to apply the knowledge and skills in your profession. This book will cover the concepts of computer hacking for both Windows and Linuxoperating systems.

For Windows based practical examples and illustrations, I have usedmy Windows 8. For Linux based examples I have used Kali Linux 1. Since most examples are not specific of the operating system version, you canimplement them on any version of Windows and Linux installed on your computer.

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Each chapter including all the concepts presented in this book are laid out in a hierarchical. This may not be true forevery chapter but in many cases the concepts discussed in the earlier part of the book mayseem to form the key elements in understanding the subsequent concepts.

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Therefore, Irecommend reading this book in an orderly manner and not skip the concepts or chaptersin between. Throughout this book, you will be presented with many illustrative examples, analogiesand eye-catching diagrams that will not only make the whole understanding processeasier, but also makes the learning process a fun!

I hope you like this book and enjoy theconcepts presented in it. Chapter 1 - Introduction I bet most of you are really excited to get started. But, before we actually move on tolearning how to hack, let us begin to understand what hacking really means. In the field of computer security, hacking simply refers to the act of exploiting theweakness that exists in a computer system or a computer network.

In other works, a hacker is someone who has developed a deeper interest in understandinghow the computer system or the software program works, so that he can take control of thecomputer by exploiting any of the existing vulnerabilities in it. White Hat Hacker: A white hat hacker also known as ethical hacker is someone who uses his skills only for defensive purposes such as penetration testing.

These type of hackers are often hired by many organizations in order to ensure the security of their information systems. Black Hat Hacker: A black hat hacker also known as cracker is someone who always uses his skills for offensive purposes.

The intention of black hat hackers is to gain money or take personal revenge by causing damage to information systems. Grey Hat Hacker: A grey hat hacker is someone who falls in between the white hat and black hat category.

This type of hacker may use his skills both for defensive and offensive purposes. Script Kiddie: A script kiddie is a wannabe hacker. These are the ones who lack the knowledge of how a computer system really works but use ready-made programs, tools and scripts to break into computers. A vulnerability is an existing weakness that can allow the attacker to compromise the security of the system. An exploit is a defined way piece of software, set of commands etc. A threat is a possible danger that can exploit an existing vulnerability to cause possible harm.

An attack is any action that violates the security of the system. In other words, it is an assault on the system security that is derived from an existing threat. How long does it take to become a hacker? Hacking is not something that can be mastered overnight.

So, for anyone who is wanting to become a hacker, all it takes is some creativity,willingness to learn and perseverance. What skills do I need to become a hacker? In order to become a hacker, it is essential to have a basic understanding of how acomputer system works. For example, you may start off with basics of operating system,computer networks and some programming.

At this point in time, you need not worry much about this question as this book will takeyou through all those necessary concepts to establish the skills that you need to possess asa hacker. What is the best way to learn hacking? As said earlier, the best way to learn hacking is to start off with the basics.

Once you haveestablished the basic skills, you can take it even further by going through the books thatdiscuss individual topics in a much detailed fashion. Do not forget the power of Internetwhen it comes to acquiring and expanding your knowledge.

Chapter 2 - Essential Concepts Now, let us begin to understand some of the basic concepts that are essential in laying thegroundwork for our journey of learning how to hack.

Before actually jumping into thehands-on approach, it is highly necessary for one to have a thorough understanding of thebasics of computer network and their working model. In this chapter you will find a briefdescription of various concepts and terminologies related to computer networks,encryption and security. Some of the commontypes of computer network include: Local Area Network LAN This is a type of computer network where interconnected computers are situated veryclose to each other say for example, inside the same building.

Wide Area Network WAN This is a type of computer network where interconnected computers are separated by alarge distance a few km to few hundreds of km and are connected using telephone linesor radio waves. It is aglobal system of various interconnected computer networks belonging to government orprivate organizations. This computer can be a terminal or a web serveroffering services to its clients.

For example, twocomputers on a network can communicate only if they agree to follow the protocols. The following are some of the most widely referred network protocols: Internet Protocol IP Address An Internet Protocol address IP address is a unique number assigned to each computeror device such as printer so that each of them can be uniquely identified on the network. Types of IP Address: Private IP Address: A typical example of private IP address would be somethinglike: A public IP address is the one that is assigned to a computerconnected to the Internet.

An example public IP address would be something like: Once acomputer is on the ISP network it will be assigned a public IP address using which thecommunication with the Internet is made possible. Finding your public IP is extremely simple. Figure 2. It is one of the most widely used protocol on the Internet forrequesting documents such as web pages and images.

Most e-mail systems that send mail over the Internet use SMTP toexchange messages between the server. TelnetTelnet is a network protocol that allows you to connect to remote hosts on the Internet oron a local network.

It requires a telnet client software to implement the protocol usingwhich the connection is established with the remote computer. In most cases telnet requires you to have a username and a password to establishconnection with the remote host.

Occasionally, some hosts also allow users to make. After the connection is made, one can use text based commands to communicate with theremote host. The syntax for using the telnet command is as follows: However, SSH has an upper hand over telnet in terms of security. Telnetwas primarily designed to operate within the local network and hence does not take care ofsecurity.

On the other hand SSH manages to offer total security while connecting toremote hosts on a remote network or Internet. Akin to telnet SSH also uses a client software and requires a username and password toestablish connection with the remote host.

Each of these services are uniquely identified by a number called network port or simply referred to as port.

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If a computer wants to avail a specific service from anothercomputer, it has to establish a connection to it on the exact port number where theintended service is running. For example, if a terminal is to request a web document from a remote server using HTTP,it has to first establish a connection with the remote server on port 80 HTTP service runson port 80 before placing the request. In simple words, port numbers can be compared to door numbers where each door grantsaccess to a specific service on a computer.

The following table shows a list of popularservices and their default port numbers: When data such as a mail, message or afile has to be transmitted between two hosts, it is fragmented into small structures calledpackets and are reassembled at the destination to make the original data chunk. Since Internet is the mother of millions of computers each having a unique IP address, itbecomes impossible for people to remember the IP address of each and every computerthey want to access. So, in order to make this process simpler the concept of domainnames was introduced.

However, since the network protocol understands only the IP address and not the domainnames, it is necessary to translate the domain name back to its corresponding IP addressbefore establishing a connection with the target server. This is where DNS comes inhandy. All this processwill happen in a split second behind the scenes and hence goes unnoticed. How DNS Works?

Let us understand the working of Domain Name System using the following example: This request is oftenreferred to as a DNS query. The local name server will receive the query to find out whether it contains the matchingname and IP address in its database. If found, the corresponding IP address response isreturned. This process continues until the query reaches theDNS server that contains the matching name and IP address. The IP address response then flows back the chain in the reverse order to your computer.

The following figure 2. A firewall can be simply compared to a security guard who stands at theentrance of your house and filters the visitors coming to your place. He may allow somevisitors to enter while deny others whom he suspects of being intruders.

Similarly afirewall is a software program or a hardware device that filters the information packets coming through the Internet to your personal computer or a computer network.

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How Firewall Works? Firewalls may decide to allow or block network traffic between devices based on the rulesthat are pre-configured or set by the firewall administrator. Most personal firewalls such asWindows firewall operate on a set of pre-configured rules which are most suitable undernormal circumstances, so that the user need not worry much about configuring thefirewall.

The operation of firewall is illustrated in the below figure 2. However, in order to meet customized needs large networks andcompanies prefer those firewalls that have plenty of options to configure. For example, a company may set up different firewall rules for FTP servers, telnetservers and web servers. In addition, the company can even control how the employeesconnect to the Internet by blocking access to certain websites and restricting the transfer offiles to other networks.

Thus, in addition to security, a firewall can give the company atremendous control over how people use their network. Firewalls use one or more of the following methods to control the incoming and outgoingtraffic in a network: Packet Filtering: In this method, packets small chunks of data are analyzed against a set of filters. Packet filters has a set of rules that come with accept and deny actions which are pre-configured or can be configured manually by the firewall administrator.

If the packet manages to make it through these filters then it is allowed to reach the destination; otherwise it is discarded. Stateful Inspection: Instead, it compares certain key aspects of each packet to a database of trusted source. Both incoming and outgoing packets are compared against this database and if the comparison yields a reasonable match, then the packets are allowed to travel further.

Otherwise they are discarded. Firewall Configuration: Firewalls can be configured by adding one or more filters based on several conditions asmentioned below: IP addresses: In any case, if an IP address outside the network is said to be unfavourable, then it is possible to set filter to block all the traffic to and from that IP address.

For example, if a certain IP address is found to be making too many connections to a server, the administrator may decide to block traffic from this IP using the firewall. Domain names: Since it is difficult to remember the IP addresses, it is an easier and smarter way to configure the firewalls by adding filters based on domain names.

By setting up a domain filter, a company may decide to block all access to certain domain names, or may provide access only to a list of selected domain names. If the services running on a given port is intended for the public or network users, they are usually kept open. Otherwise they are blocked using the firewall so as to prevent intruders from using the open ports for making unauthorized connections.

Specific words or phrases: A firewall can be configured to filter one or more specific words or phrases so that both the incoming and outgoing packets are scanned for the words in the filter.

Hacking Secrets Exposed - A Beginner's Guide - January 1

For example, you may set up a firewall rule to filter any packet that contains an offensive term or a phrase that you may decide to block from entering or leaving your network. Hardware vs. Software Firewall: Hardware firewalls provide higher level of security and hence preferred for servers wheresecurity has the top most priority.

The software firewalls on the other hand are lessexpensive and hence preferred in home computers and laptops. Hardware firewalls usually come as an in-built unit of a router and provide maximumsecurity as it filters each packet at the hardware level itself even before it manages to enteryour computer. In the presence of a proxy server, there is no direct communication between the client andthe server.

Instead, the client connects to the proxy server and sends requests for resourcessuch as a document, web page or a file that resides on a remote server. The proxy serverhandles this request by fetching the required resources from the remote server andforwarding the same to the client.

How Proxy Server Works? An illustration of how a proxy server works is shown in the Figure 2. An example of client can be a user operated computer that is connected to the Internet. Since it the proxy server which handles the requests betweenthe client and the target, only the IP address of the proxy server is exposed to the outsideworld and not the actual one.

Therefore, most hackers use a proxy server during theattacks on their target so that it would be hard to trace back to them.

Compared to Windows operating system Linux is more secure, stable, reliable,multi-user capable and compatible with both server and desktop usage. This makes it oneof the most popular operating system next to Windows. As an ethical hacker, it is most essential to have a sound understanding of the Linuxplatform, its usage and commands. Since it is a freeware, highly secure and stable operating system, millions of servers on the Internet runs on Linux. Some of the best hacking scripts and programs are designed only for Linux.

LINUXIt is no doubt that Windows is the most popular desktop operating system known for itsuser friendliness and graphical user interface. As a result, most computer users across theworld are familiar with the Windows operating system but are new to Linux. Known for its security, stability, flexibility and portability. Widely used for desktop usage by home and office Widely used for server usage by enterprise and corporations.

The operating system is mainly based on graphical The operating system is mainly based on command useruser interface GUI. Designed to operate with only one user at a time. Designed to support simultaneous multi-user operation.Image: Intel KrebsOnSecurity began this research after reading a new academic paper on the challenges involved in dismantling or disrupting bulletproof hosting services, which are so called because they can be depended upon to ignore abuse complaints and subpoenas from law enforcement organizations.

Extremely Easy to Follow. To delete a file use thecommand as shown below: Jul 22, Yousef is currently reading it. So, if you are a beginner with a little or no prior background of hacking but looking to take off, Hacking Secrets Exposed is for you!

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