Installation Guide for Kali Linux

MakeThingsEasy

Introducing Kali Linux

The creators of BackTrack have released a new, advanced penetration testing Linux distribution named Kali Linux. BackTrack 5 was the last major version of the BackTrack distribution. The creators of BackTrack decided that to move forward with the challenges of cyber security and modern testing a new foundation was needed. Kali Linux was born and released March 13th 2013. Kali Linux is based on Debian and an FHS-Compliant file system.

Kali has many advantages over the BackTrack. It comes with many more updated tools. The tools and streamlined with Debian repositories and synchronized four times a day. That means users have the latest package updates and security fixes. The new compliant file systems translate into running most tools from anywhere on the system. Kali has also made customization, unattended installation, and flexible desktop environments and strong feature in Kali Linux.

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How to Fix the SIOCSIFFLAGS Error in Kali Linux

I recently rebuilt my laptop and reloaded the applications I use for pentesting including Virtualbox and Kali Linux. If you need help setting up Kali Linux in Virtualbox here is a great link that walks through the setup process.

Once I had Kali up and running in my virtual environment I plugged in my ALFA wireless adapter and made sure the USB device was running in the virtual environment.

I ran iwconfig to verify the wireless interface.

iwconfig

So far so good and I ran ifconfig to verify the interface was up, but the only interface returned was the loopback.

loopback

After discovering the wireless interface was not up and I ran ifconfig wlan0 up to bring it up and got the SIOCSIFFLAGS error.

siocsifflags

I wrote about this error a while back when I was running Backtrack 5 and I first started using the Fern WiFi Cracker. I decided to expand on that post plus I was asked about creating a script to run all the commands at one time instead of typing them individually. The script should be run every time Kali is booted, but after your adapter is plugged in and recognized.

First open a text editor and type in the script shown in the screen shot below. I prefer the gedit text editor and since that is not loaded in Kali I used Leafpad and coming from the Windows world it reminds me of Notepad.

script

Name the file and save it to the Root directory.

saveas2

Open the Terminal window and do a quick ls command to verify the file is present.

lscommand

To run the script type ./<file name>

filepremissions

You’ll probably get an error message about permissions denied and running the chmod 755 <file name> command will adjust the permissions on the file as needed.

chmodalfa

Rerun the script ./<file name>

runscript

If there are no errors you are good to go and can run ifconfig to verify the wireless interface is up.

ifconfig

I will run the script every time I boot Kali whether or not the interface shows as being up in the ifconfig results.

Trouble shooting wireless issues in Kali Linux can be a frustrating process, but use your Google Fu skills and you’ll find a lot of good links and people offering up advice. Good Luck!

Changing Your MAC Address Using Macchanger

Macchanger is a free utility used to change the MAC address of the network adapter. Macchanger can randomly assign a MAC address or assign a specific MAC address of your choosing.

Usage

There are several instances changing the MAC address is necessary, but I use the utility while pentesting a wireless network with MAC filtering enabled and have to assign an approved MAC address to the wireless adapter.

Install

The Macchanger utility is included with Kali Linux, but to install the application, update it, or verify your using the most up to date version run the following command. In the screen shot that follows the install command confirms that the newest version is already installed.

#apt-get install macchanger

macchangeinstall

Help

Help with Macchanger can be accessed by running the following two commands.

#macchanger --help

#man macchanger

Assign a Random MAC Address

I’m using an Alfa USB wireless adapter and I will run the following commands to verify the adapters interface and the permanent MAC address.

#ifconfig

#ifconfig wlan1

Macchanger can also be used to verify the manufacture burned in MAC address by running the following command.

#macchanger--show wlan1

Change the MAC address using one of the following commands.

#macchanger -r wlan1

#macchanger -A wlan1

Error Message

If you get an error message the MAC address can’t be changed and the adapter is busy take the adapter down and then rerun Macchanger. (Only the OUI portion of the MAC address is shown in the screen shot and the last 3 octets are blocked out)

adapterbusy

#ifconfig wlan1 down 

#macchanger -A wlan1

changemac

Bring the interface back up and verify the MAC address is changed.

#ifconfig wlan1 up 

#macchanger --show wlan1

changemac2

To return the MAC address to the vendor burned in address run the following command. You may have to take the interface down first.

#ifconfig wlan1 down

#macchanger --permanent wlan1

Assign a Specific MAC Address

The following command will assign a specific MAC address.

#macchanger --mac=aa:bb:cc:11:22:33 wlan1

macspec

Using the Macchanger GUI

If you’re not comfortable running commands there is a Macchanger GUI. A couple of commands will have to be run from the terminal window. One to install the Macchanger GUI application and the second to start the GUI application.

#apt-get install macchanger-gtk

#macchanger-gtk

macchangegtk

After the GUI opens select the options to change the MAC address and click the Change MAC button.

As you can see Macchanger is a great utility to change the MAC address and is simple to use and offers a GUI application as well. Let me know any questions in the comments section below or share any commands you find easier to use with Macchanger, or pass along any other utilities you use to change the MAC address.

Thanks for visiting my blog and happy pentesting!

Kali Linux Overview

CYBER ARMS - Computer Security

Kali Linux

The moment we have been waiting for has finally arrived, Kali Linux has been released!

This is huge news for Backtrack Linux fans. Kali is, in essence, Backtrack 6. All you have come to expect from Backtrack is present, and more, but the tool has been reworked from the ground up. Hence the name change to Kali.

One of the biggest things you will notice when installing is that Kali is based off of Debian Linux, instead of Ubuntu. The install routine is slightly more involved than Backtrack 5.

The desktop still uses Gnome, but it does seem to have a different look/ feel to it:

Kali Linux Menu

A quick peek at the menu shows a very good addition. A “Top Ten Security Tools” menu has been added so you can get into your favorite tools faster.

Metasploit, Aircrack, Burpsuite, Nmap, Wireshark and several other top programs are now right at your…

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