Python book for beginners pdf

Now, you can write a script where you can use the class that you have just created. In this example, you will be entering votes for an online competition on the website kittenwar. Using this script, you should be able to visit the targeted website anonymously five times, which will allow you to enter five votes using the same computer: After running this script, you will be able to fetch the targeted web page using five different unique sessions, which means that you are using different cookies every time you visit.

Wireless Attack: Dnspwn Attack This attack is created by using the airpwn tool, which is a framework for packet injection for wireless This tool is created to listen to incoming packets and then injects content to the access point when the incoming data matches a pattern that is specified in the config file.

To your target, your airpwn looks and behaves like the server that he is trying to communicate to. To perform this attack, you will need to have Backtrack or Kali Linux installed in your computer, as well as a wireless card adapter. Follow these steps: 1. To do this, pull up airmon-ng from Kali Linux and then enter the following command.

Once you have a monitor up and running, you can start creating the code for your attack. Create your code. You will need to make use of the scapy module in order to perform the dnspwn attack.

Now that you have the scapy module, we can now make the function that will allow you to construe the request for the needed information and then do response injection. You can do this by working up the following layers: The scape module makes the entire process simple by removing away a lot of details that you do not need to be concerned about. Once the other details has been abstracted away by scapy, you can use the following code: At this point, you have all the flags set for your attack.

As you may have noticed, there is a certain limit when it comes to sending and receiving data through the network and your own networking interfaces. The reason for this limit is the amount of bandwidth that you have, and if other users are not hogging the bandwidth, the faster your connections will be. When all the bandwidth that should be available to you, you are experiencing a DoS Denial of Service. Once you already found that service, you can make the program behave in a way that it is not supposed to do, which will cause the remote host to take up all its available resources and then take it offline.

This will cause the host to ignore any application that are listening to that particular host and then reply with a packet that says ICMP Destination Unreachable. To do this, all you need to do is to pull up your text editor and input the following code: Save this code as udpflood. To run the code, pull up IDLE and then execute the program, which will prompt you to enter all the other information that you need.

Take note that this hack is directed to only one port, but if you want to exploit all other 65, ports that are available. Chapter 9: Hacks for the Web You may be wondering how to get past certain website protection policies in order to get a file that you want, browse anonymously, or get more information about the website that you want to penetrate to launch a massive attack.

In this chapter, you will learn how you can perform Creat hacks on a website using some programs that you can create using Python. Creating an SSH Botnet Now that you know how to create a port scanner and you are aware of how you can find vulnerable targets, you can now proceed to exploit their vulnerabilities. One of the ways to do this is to exploit the Secure Shell protocol SSH in order to get login credentials from clients.

What is a botnet? Bots, as the name implies, are incredibly useful when it comes to automating services in practically any device.

Botnets, on the other hand, is a group of bots that are joined together by a network which allows system administrators e to efficiently do automated tasks over an entire system of users that are connected together by a server or a local network. While botnets are essentially tools for easy managing of several computers, they can also be tools that you can use for unintended purposes, such as creating a DoS or DDoS Distributed Denial of Service that may cause a website to load multiple times in a session or for commenting on social media sites continuously.

Assuming that the hosts credentials are stored in a file that has this format: username hostname:port password. Now that you have these credentials, you will need to consider the functions that you need to create. This may mean that you need to run a status check to see running hosts, make an interactive shell session to communicate with a targeted host, and perform a command on selected hosts. To begin, you will need to import every member of the namespace fabric.

Once you have these setup, you will not have to enter each password for each new connection. Now that you have this setup, you can now proceed to running the commands. To be able to do this, you will need to create a menu that will enable you execute the other tasks with the specified hosts using the execute function of Fabric.

Scraping Websites that Needs Login Credentials If you want to mine data from a website, you will find that you will first need to log in before being able to access any information that you want. This means that in order to get the data that you need, you will first need to extract all the details that you need to login to your targeted website.

Since it is prompting you to supply user credentials, you are unable to go into the website and mine the information that you want. As you may have guessed, you will have to build a dictionary that will allow you to put in details for the log in. Chapter Understanding Attacks Using Python Hacking is not all about launching attacks — understanding how black hat hackers launch target and penetrate their target systems will make you understand how you can use your newfound knowledge to prevent your own system from being vulnerable to them.

Knowing User Locations Out of Tweets If you have been using Twitter, you may think that you are tweeting your updates from sheer randomness; however, the truth is that you are following an informal formula for the tweets that you compose. There are other data included in your tweet, which may not be visible in the body of your tweet, such as an image that you want to share or a location. To a hacker, all the information in your tweet contains something that will be important in writing an attack — when you think about it, you are giving away information about the person that you are interested in, links that you and your friend are likely to be interested in, and trends that you might want to learn about.

Your script will look like this: When your script returns with the above results, you are likely to deduce that the these teams are tweeting live from where they are. From this output, you may deduce that the Red Sox are playing in Toronto, while the Nationals are in Denver. Matching an IP Address to a Physical Location Most of the time, people are willing to post what is on their mind on social media sites, or perform attacks that they find using online tools that they can download, thinking that they will never have to face the consequences of their actions.

While most bullheaded yet inexperienced hackers and online trolls think that they can hide behind a fake account to conceal their identity, you can prove that these people are not as anonymous as they think they are.

In fact, there are several ways to use libraries and third-party modules in Python to unmask the location and identity of a user based on his or her IP address. For example, you suspect that your system is being targeted by another hacker and you notice that your open ports are being sniffed by a particular IP address. Python can help you do that using a script that is similar to what is going to be discussed in this section. Using this free database, you will aim to write a code that will match the IP addresses found on their list to cities.

Once you are able to download the GeoCityLite database, you will be able to analyze the IP addresses down to locating the country name, state, postal code, and a general longitude and latitude. To make the job easier, you can use a Python library created to analyze this database. In this hack, you will learn how to analyze a network capture, and examine the protocol layer of each packet using the tool called Dpkt.

When you run this script, you will be able to find both the source and destination IP addresses: The next thing that you will want to do is to match these IP addresses with a physical location. You can improve the script that you have just created by creating an additional function retGeoStr , which will give you a physical location for the IP address that your code is able to locate.

For this example, you will be able to find the three-digit country code and the city for each IP address and then have the code display this information. Just in any case the function prompts you with an exception, handle it by providing a message that indicates that the address is not registered. Once you are able to add the function retGeostr to the script that you were able to produce earlier, you will be able to create a good packet analysis toolkit that will allow you to view the physical destinations of packets that you want to study.

Now that you are aware that your data is possibly being routed to too many different computers, you get the idea that you need to improve your security by securing your ports. You will want to make sure that your location is untraceable, and that is because of a good number or reasons.

For the sake of practicing white hat hacking, you will want to learn how programmers are able to mask their location especially when they perform reconnaissance attacks or DoS attacks, which makes use of the Internet Protocol and see to it that you check your traffic from time to time to see if your activities are being listened to by an unknown IP address.

At the same time, you may also want to protect yourself from being targeted by black hat hackers by hiding your location. To black hat hackers, IP spoofing essentially lets them conceal their identity and location whenever they perform their attack. Doing so will also allow them to impersonate another computer system and defeat existing security measures which may require authentication based on their IP addresses.

This will allow an attacker to modify or stop all traffic, or intercept data sent over the network. Using the following code, you can catch all packets that are routed towards a targeted machine, which entails being able to see all the information that a targeted user sends out, which allows you to view private communication that is not protected by any form of encryption.

Find Information About the Targeted Machine To find out how you can hack your target, you will need to check the ARP cache on the machine that you want to attack. Take note of this to check the ARP cache while you have an ongoing attack and verify that you have changed the MAC address that corresponds to the gateway. You have also setup a packet sniffer that will capture traffic for your targeted machine.

All that is left for you to do is to write these packets out to a PCAP file that you can pull up later using the Wireshark tool, or use an image carving script. Now that you are able to setup the hack, you are now ready to code the ARP poisoning. However, being able to modify the contents of a malware will enable you to bypass antivirus detection.

In this hack, you will be able to learn how to create a malicious code using a Kali Linux component called Metasploit. This program can generate malware, but most of the antivirus companies can easily recognize content written by this software when they are released into a computer as they are written originally.

In order to create an antivirus-proof malware, you will need to tweak the malware that you will create using software. Test Your Malware To see that the. Almost immediately, the antivirus installed will catch it, and detect it like this: Now, if you are going to turn off the antivirus software and run the malware, the command line will display something like this: When this happens, you can actually control the Windows machine where the malware is installed using another computer.

To stop the malware, end the shell. What you need to do is to compile this code into an. To do that, enter this command string in the Kali Linux terminal: nano shell. Add a closing parenthesis before it.

Enter to proceed saving your modified file. Compile the Malware and Run It In order to run the modified malware, you will need to compile it first. This folder will have the modified malware inside it named as shell.

To run the malware, all you need is to open the folder and double- click on the shell. Bypass that by selecting Allow Access. After doing so, pull up the command prompt and then run: netstat -an findstr This will pull up a listening port, which looks like this: To stop the listener, simply pull up the Task Manager and end the processes named shell. Check with your antivirus if the malware that you have just created can still be detected.

It should bypass most of the known antivirus programs out there. These files are marked to be erased from the hard drive, but they are not actually removed. If you empty your Recycle Bin, you may think that all the files that are moved there are completely gone. However, there are situations wherein you may want to recover files that you accidentally deleted from the Recycled Bin, or you may want to go dumpster diving and recover important documents that were deleted from a target computer.

This code will help you do all these things. Create a Module To Help Find Deleted Files Of course, you will want to write a script that will be independent of the operating system, which will make it useful to hack a different operating system. To do that, you will want to write a function that will run a test against all possible directories that contains delete files in an operating system, and then return with the information that contains the directory that exists on the operating system that you wish to exploit: Once you manage to find the targeted Recycle Bin directory, the next thing that you want to do is to look at the contents.

Take a look at the found directory: You will notice the strings S which ends with either or These strings represent the user accounts on the targeted machine. Now, you will want to identify these user accounts and find out which of the user accounts you will want to retrieve the deleted items from.

Doing so will allow you to get more useful information when you recover items that were deleted from the Recyle Bin. This function will pull up the registry to check the ProfileImagePath Key, search for the value and then send back with the name that is found right after the backslash in the target userpath.

By being able to record these key strokes, any hacker will be able to decipher how the targeted user interacts with his computer. This means that with a keylogger, you essentially have access to practically everything that the victim has typed on his keyboard, which includes sensitive data such as usernames, passwords, credit card numbers, and so on.

Despite the huge danger that keyloggers may pose to any user, they are remarkably easy to make using Python. The code that will be taught in this section is a keylogger that does not rely on hardware and will continue to run in the background, which prevents the targeted user from noticing it.

Once you are on a new script window, input the following code: Test the Created File Save the code as keylogger. The keylogger will proceed running in the background and will log the keystrokes on the keyloggeroutput. To end logging, pull up Task Manager and end all running Python tasks and programs.

Conclusion At this point, you may have had some idea on how you can make your own computer system and network more secure — simply performing some of the codes that are given in this book as an example will give you the idea that there are just too many exploits out there that are available to criminal hackers and are used to compromise targeted computers.

However, your new knowledge can prevent you from falling victim to these hackers and allow you to think ten steps ahead. This is the second edition of Think Python, which uses Python 3. It starts with basic concepts of programming, and is carefully designed to define all terms when they are first used and to develop each new concept in a logical progression.

Larger pieces, like recursion and object-oriented programming are divided into a sequence of smaller steps and introduced over the course of several chapters.

What you need to know about Python: The absolute essentials you need to get Python up and running is designed to act as a brief, practical introduction to Python. It is full of practical examples which will get you up and running quickly with the core tasks of Python. You can think of the Python programming language as your tool to Published on : April 9, Python version: TH pages. Downey 0. If you want to learn how to program, working with Python is an excellent way to start. This hands-on guide takes you through the language a step at a time, beginning with basic programming concepts Published on : Dec.

Begin by building classic games like Hangman, Guess the Number, and Tic-Tac-Toe, and then work your way up to more advanced games, like a text-based treasure hunting game and an animated collision Learn how to program in Python while making and breaking ciphers—algorithms used to create and send secret messages! Published on : Jan. The Hitchhiker's Guide to Python takes the journeyman Pythonista to true expertise.

More than any other language, Python was created with the philosophy of simplicity and parsimony. Download Now. There is also another pdf book-related web design and development. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

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