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In the first part of this project , we completed all the prerequisites needed to build an offline independent phone network. We are now ready to finalize, launch, and use the network, which I will demonstrate in this post. Note that this post is best viewed on a PC as the code snippets are too large for smartphone displays.

In the series of wifi hacking, I have already covered WPA handshake capture and social engineering . In this post I present to you yet another attack using a novel approach for gaining access to a network: it is based on the WPS protocol and is known as the Pixie-Dust attack. You will find a step-by-step guide after a short explanation of the theory behind the security flaw hereby discussed.

In many rural regions across the world, cellular signals are very weak or inexistent at all, rendering any communication other than face-to-face impossible. This constitutes a big obstacle in most situations where a group of people needs to exchange information. Fortunately, there exists a way to overcome this problem. Setting up your own mobile network might seem out of reach at first glance, but it is in fact very attainable with a Raspberry Pi and some specific tools. Of course, the resulting network will be limited in range as the configuration lacks any relay antenna, but it will allow you and your hypothetic team to communicate with your smartphones, either by text messages or by voice. Being able to build such a network is a tremendously valuable skill that will prove to be useful in several situations: natural disasters, large-scale protests, trips to secluded areas with no coverage… In this post and the next one, I will describe the process of creating a Wifi access point,

It is possible to obtain a Wifi password without the need for a powerful processor or a lengthy brute-force attack. Do you know how thieves steal cars and jewelry? They can also steal your password in a comparable manner: this is what will be described in this post. Meet social engineering, a fancy designation for "phishing". This type of attack is commonly used for stealing sensitive data, such as credit card details or account credentials. The popularity and spread of this method come down to one single characteristic: ease of use. Perpetrators don't need any background knowledge in coding, cyber security, or computer science, and the technique doesn't require advanced hardware. Today's attack is the art of fooling the user into thinking you're the legitimate manufacturer of his router: you then pretend that a firmware update is required and prompt the user for his password. You thus gain access to the Wifi network effortlessly, without using any brute-fo

The Raspberry Pi is an ideally versatile platform for pentesting, as you would have guessed by reading my previous posts since it is my device of choice. I wrote about several attacks performed with Kali Linux running on a Pi 3, but I didn't mention the different setups possible: lab or headless. The lab setup This is the config you have probably used while installing Kali Linux on the Pi. Here, you are interacting with the Pi directly and not through an intermediate device (more on that later): this is why you need to use a keyboard, mouse and monitor connected to the USB and HDMI ports respectively. The Pi is powered with a 5V/2A adapter plugged in a wall socket. I made a diagram to illustrate the setup: Fig.1 - Lab setup (click to enlarge) This is called a "lab" setup for two reasons. First, it is meant to be rather permanent, in a fixed place, rather than portable. Second, this is usually the "laboratory" of the pentester, where he searches for new

A text editor is where a script coder or hacker spends most of his time. Choosing one that we master and feel comfortable with is therefore a crucial factor affecting productivity and speed. A common mistake is made by new hackers: they find a text editor with a GUI and jump towards it because it's simple and similar to standard editors. This is a bad practice because they'll find only later that the capabilities of such editors are limited. It is recommended to start with a more advanced text editor since day one, even if this requires more effort, time and dedication to master. Today we'll talk about Vim, short for Vi Improved, a text editor that has earned the reputation of the most powerful editor out there. Vim, the friendly beast that scared newbies The very first thing we notice about Vim is that it doesn't have a GUI. Instead, it runs entirely in a terminal window. Add to this the lack of functionality for the mouse -- all interaction is done through the ke

Perhaps the most important skill a hacker should master is programming. This is what makes the true difference between "hackers" and "script kiddies". The latter lacks the knowledge to write his own script: he rather uses programs made by others to attack his target. In contrast, a worthy hacker builds his own program tailored to his needs in order to exploit a specific vulnerability. Does that mean that a hacker never uses material written by others? Of course not. As most of the exploits (i.e. scripts that exploit a flaw) written by/for the Linux community are open-source, hackers often reverse-engineer these programs to understand how they work and potentially modify them to suit their own needs. What's more, when building his own script, a hacker very often integrates some tool from a fellow hacker. This is precisely how malware evolves on a daily basis: a programmer uses his know-how to combine multiple exploits in an effective way. Writing your firs