Thursday, October 31, 2013



I. Man in the middle - Concept

The man-in-the-middle attack (often abbreviated MITM, MitM, MIM, MiM, MITMA) in cryptography and computer security is a form of active eavesdropping in which the attacker makes independent connections with the victims and relays messages between them, making them believe that they are talking directly to each other over a private connection, when in fact the entire conversation is controlled by the attacker.


Also Read: Full Concept of Man in the Middle Attack

 
II. Scenario.

We will use this IP's:

Victim IP address : 192.168.8.90
Attacker network interface : eth0; with IP address : 192.168.8.93
Router IP address : 192.168.8.8


III. Requirements:

1. Arpspoof
2. Driftnet
3. Urlsnarf




Also read:Best Hacker OS Free Download
 
IV. Step by step: Kali Linux Man in the Middle Attack.


1. Open your terminal (CTRL + ALT + T kali shortcut) and configure our Kali Linux machine to allow packet forwarding, because act as man in the middle attacker, Kali Linux must act as router between "real router" and the victim. If you don't know how to set up packet forwarding in linux - let me know in the comment

2. You can change your terminal interface to make the view much more friendly and easy to monitor by splitting kali linux terminal window.

3. The next step is setting up arpspoof between victim and router:

arpspoof -i eth0 -t 192.168.8.90 192.168.8.8

4. And then setting up arpspoof from to capture all packet from router to victim:

arpspoof -i eth0 192.168.8.8 192.168.8.90

5. After step three and four, now all the packet sent or received by victim should be going through attacker machine.

6. Now we can try to use driftnet to monitor all victim image traffic. To do this we will base on this website:
http://www.ex-parrot.com/~chris/driftnet/

Driftnet is a program which listens to network traffic and picks out images from TCP streams it observes. Fun to run on a host which sees lots of web traffic.

7. To run driftnet, we just run this:

driftnet -i eth0

When victim browse a website with image, driftnet will capture all image traffic.
To stop driftnet, just close the driftnet window or press CTRL + C in the terminal

8. For the next step we will try to capture the website information/data by using urlsnarf. To use urlsnarf, just run this code:

urlsnarf -i eth0

...and urlsnarf will start capturing all website address visited by victim machine.

9. When victim browse a website, attacker will know the address victim visited.








Also read:How to Hack Wifi For Free?


V. Conclusion:

Hope you enjoyed! Remember - this article is only for educational purposes.

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Driftnet or Urlsnarf is hard to detect, but you can try to find the device in your network with promiscious mode which have possibliity to sniff the network traffic.

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