Showing posts with label Session Hijacking. Show all posts

HOW TO HACK FACEBOOK PASSWORD USING HTTP SESSION HIJACKING (Cookie Stealing)

This method is a bit less known but in recent months it has become widely popular due to the introduction of the software 'FIRESHEEP'.When you log in to your account at a website, your web browser sends your username and password to the website server. The password is first encrypted and then send over the network. Then the server checks the username and password against the database and if they both match then sends to the user's browser a "cookie" (a text which the browser uses for further requests to the web server) but unlike the password the cookies are not encrypted and are sent as it is over the network, this cookies can be easily captured as they travel through the network or a busy WI-FI. The newly released Firefox extension "FIRESHEEP" makes it more easy. Actually so easy that even a total nube can capture this cookies.



FIRESHEEP TUTORIAL (Http Session Hijacking)
Firesheep a Firefox addon has recently become very popular for easily carrying out a HTTP session hijacking attack. Http session hijacking attack can't be considered as a very sophisticated attack but needs some technical knowlegde to be performed . But Firesheep makes the attack a child's play. Firesheep was developed by Eric butler for Firefox, it was released at Toorcon 12 to demonstrate how serious cookie stealing can be.
Now lets understand how Firesheep actually works. When you provide your username and password in login forms of different website and submit it, the browser first encrypts the password and then sends it over the network. The corresponding website compares the information against its internal database and if they match, it sends a cookie(a small text file) to your browser. The browser saves this cookie and uses it to authenticate the user on the website every time the user opens a different page of the website. When the user logs out of his account the browser just deletes the cookie. Now the problem is that this cookies are not encrypted before sending over the network, due to this a hacker can capture this cookies and using them authenticate himself as the user from whom the cookie was stolen.
Now lets see how to use Firesheep.

Step 1)
First download and install WinPcap (WinPcap in Windows is used for capturing network traffic.)
You can use Pcap in libPcap library for unix like systems.
DOWNLOAD WinPcap

Step 2)
Download and open Firesheep in Firefox, it will automatically install it. Or just drag it and place it
over Firefox shortcut (Firesheep at this instant is not supporting Firefox 4 ).
DOWNLOAD Firesheep.

Step 3)
After it is installed, in Firefox go to View -->Sidebar --> Firesheep. A side bar will appear in the browser with a button "start capturing", press it and sit back. In few seconds you will see account details with photos of the target. Click on one of it and you will directly enter in his account. Simple as that.

(Note:- Using Firesheep to hijack others account is illegal under wiretapping Act.)

Nirvan Champ

Session Hijacking 2nd Tutorial

First of all, before going any further you have to understand what a cookie is. So what is a cookie? a cookie is a small piece of information that is stored in the user's client (browser) when a user visits a website. It is generated by the web server and sent to the browser for authentication purpose.  Lets say you login to your facebook account, when you login a session data is being created in the facebook's server and it sends a cookie file to your browser. when you do some activity in facebook, these two things are compared and matched everytime. So if we manage to steal this cookie file from someone we will access to their account. In this tutorial i will show you how to do this in LAN. (this method will not work if the victim is not connected to your network.)


So in this tutorial you will be using a tool called Wire Shark ( Download From Here ) and a firefox add on called Add N Edit Cookies. (Download From Here ).

When done this process, just minimize Cain And Abel.

Wire shark is a tool used to sniff packets from the network clients. we will be using this to steal our cookies.
Add N Edit Cookies add on is to inject the stolen cookie into firefox browser.

Download and install wireshark, open it up and click on "Capture" from menu bar. select your interface and click Start. this will start to capture all the packets from your network.

Now find the packets using ther filterer http.cookie.
Look for packets which has POST and GET in it. this is the http information sent to server.


Now once you found the cookie, copy its value like this:

Paste it and save it in a notepad file. Now the final thing to do is, open firefox and start the Add N Edit Cookies Add on from tools menu. Now Insert the stolen cookie here, and you're done! you should be having access to the victim's account now!

KP

Session Hijacking Tutorial

SessionHijack Session Hijacking TutorialRecently, there has been a lot of talk about the Firesheep plugin for Mozilla Firefox that allows users to easily perform a session hijacking against victims on the same LAN. The news spread fast and wide, and reporters were deeming Firesheep extremely dangerous.  I am not going to play down the fact that this does pose a serious threat to people’s privacy; however, this is nothing more than an old trick with a new face. Session hijacking has been around for ages, and performing a session hijack is actually quite simple. Today I will demonstrate one way to perform a simple session hijack without Firesheep!


What is Session Hijacking?

I am not going to waste time trying to explain session hijacking; instead I will just give you a blurb from Wikipedia:
In computer science, session hijacking refers to the exploitation of a valid computer session—sometimes also called a session key—to gain unauthorized access to information or services in a computer system. In particular, it is used to refer to the theft of a magic cookie used to authenticate a user to a remote server. It has particular relevance to web developers, as the HTTP cookies used to maintain a session on many web sites can be easily stolen by an attacker using an intermediary computer or with access to the saved cookies on the victim’s computer (see HTTP cookie theft).

How to Perform a Session Hijack

For this simple example using Windows, I am going to target Twitter (as this seems to be one of the two big targets of Firesheep, and since I refuse to use Facebook). Here are the following things that will be needed for this example:
  1. LAN with Internet connection.
  2. Two computers (technically you could just use one, but it’s more fun to see it work with two).
  3. Wireshark
  4. Mozilla Firefox
  5. Add N’ Edit Cookie Editor add-on (or another cookie editor of your choice)
The first step I am going to take is to start Wireshark and sniffing traffic. Depending on the LAN you may need to perform ARP Spoofing to successfully pull this attack off; if you need to know how to perform an ARP Spoofing attack I would suggest search Google or ping us on FB 
While sniffing traffic, log into Twitter on the other computer. After you have logged into Twitter, you can stop sniffing traffic and perform a find packet (Ctrl-F or Edit–>Find Packet). For the criteria, set the “By:” option to “String” and the “Search In” option to “Packet details”, and search for “Set-Cookie:” in the text field.
FindPacket Session Hijacking Tutorial
Find Packet options
Once you search, a packet, with the word Set-Cookie, will be highlighted; right-click the packet and select “Follow TCP Stream.” This will make it easier to read, when looking at the TCP Stream you will see “Set-Cookie: _twitter_sess=” and then a long string of characters. This is the session cookie that you are going to hijack.
Cookie Session Hijacking Tutorial
Session Cookie Found from TCP Stream
Since we now have the cookie, open Mozilla Firefox and open our Cookie Editor (Tools –> Cookie Editor). Once the Cookie Editor is open, select the Add button under Cookie. For the parameters enter the following:
  • Name: _twitter_sess
  • Content: copy paste the information from the TCP Stream (see the red box in the Session Cookie Found from TCP Stream picture)
  • Domain: .twitter.com
  • Path: /
NewCookie Session Hijacking Tutorial
Entering a New Cookie
After all this information is entered, save the cookie. The next step is to go to the address bar and go to Twitter.com, and just like that you have hijacked another users’ session.

Quick and Dirty Instructions:

  1. Sniff traffic
  2. Log into Twitter with another computer (or same computer)
  3. Stop sniffing traffic
  4. Find a packet that contains Set-Cookie
  5. Open Firefox
  6. Start Cookie Editor add-on
  7. Paste in cookie
  8. Go to Twitter
  9. No need to log in!!

Conclusion

As stated earlier this was a simple example; but as you can see, the same steps can be applied to hijack sessions from other websites. I will give credit to Firesheep, as it made this very easy process even easier and has even made people more aware of the dangers of surfing the web on public networks.

KP

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