I wanted to verify this, but Firefox said firesheep wasn't compatible with this version and blablabla... I gave up easy:) Maybe someone else could confirm this is true by actually capturing such packets being sent to/from their phone.
You may be wondering what these mysterious cookies are. Basically, a cookie is a short block of characters. The cookie consists of a name (e.g. "datr") and a value (e.g. "QKvHTCbufakBOZi5FOI8RTXQ"). For a login cookie, the website makes up a unique value each time someone logs in and sends it to the browser. Every time you load a new page, your browser sends the value back to the website and the website knows that you're the person who logged on. This assumes a couple things: first, that a bad guy can't guess the cookie (which would be pretty hard for a long string of random characters), and second, that nobody has stolen your cookie.Web pages usually use https for login pages, which means SSL (Secure Socket Layer) is used to encrypt the data. When using SSL, anyone snooping will get gibberish and can't get your userid and password. However, because https is slower than regular http (because all that encryption takes time), websites often only use the secure https for login, and use insecure http after that. Banking sites and other high-security sites typically use https for everything, but most websites do not.The consequence is that if you're using unencrypted Wi-Fi, and the website uses insecure http, it's very easy for anyone else on the Wi-Fi network to see all that data going to and from your computer, including the cookies. Once they have your cookie for a website, they can impersonate you on that website.This insecurity has been known for a long time, and it's easy for moderately knowledgeable people to use a program such as tcpdump or wireshark to see your network traffic. What Firesheep does is makes this snooping so easy anyone can do it. (I would recommend you don't do it, though.)The detailed explanationA few things about Firesheep still puzzled me. In particular, how do other people's network packets get into your browser for Firesheep to steal?To get more information on how Firesheep works, I took a look at the source code. Since it's open source, anyone can look at the code at packet sniffing code is in the firesheep/backend/src directory. This code implements a little program called "firesheep-backend" that uses the pcap library to sniff network traffic and output packets as JSON.pcap is a commonly-used packet capture library that will capture data packets from your network interface. Normally, a network interface ignores network packets that aren't intended to be received by your computer, but network interfaces can be put into "promiscuous mode" (note: I didn't invent this name) and they will accept any incoming network data. Normally packet capture is used for testing and debugging, but it can also be used for evil snooping. (As an aside, the unique MAC address - the number such as 00:1D:72:BF:C9:55 on the back of a network card - is used by the network interface to determine if the packet is meant for it or not.)Going back to the code, the http_sniffer.cpp gets a data packet from the pcap library, looks for TCP packets (normal internet data packets), and then http_packet.cpp uses http-parser to parse the packet if it's an HTTP packet. This breaks a HTTP packet into its relevant pieces including the cookies. Finally, the relevant pieces of the packet are output in JSON format (a JavaScript-based data format that can be easily used by the JavaScript plugin in the browser).That explains how the packets get captured and converted into a format usable by the Firefox add-on. Next I will show how Firesheep knows how to deal with the cookies for a particular website.The xpi/handlers directory has a short piece of JavaScript code for each website it knows how to snoop. For instance, for Flickr:// Authors:// Ian Gallagher register({ name: 'Flickr', url: ' ', domains: [ 'flickr.com' ], sessionCookieNames: [ 'cookie_session' ], identifyUser: function () { var resp = this.httpGet(this.siteUrl); var path = resp.request.channel.URI.path; this.userName = path.split('/')[2]; this.userAvatar = resp.body.querySelector('.Buddy img').src; }});This code gives the name of the website (Flickr), the URL to access, the domain of the website, and the name of the session cookie. The session cookie is the target of the attack, so this is a key line. Next is a four line function that is used to fetch the user's name and avatar (i.e. picture) from the website once the cookie is obtained.Firesheep currently has handlers for about 25 different websites. By writing a short handler similar to the above, new websites can easily be hacked (if their cookie is accessible).The visible part of the extension that appears in the browser is in firesheep/xpi/chrome. The most interesting parts are in the content subdirectory. ff-sidebar.js implements the actual sidebar and displays accounts as they are sniffed.The "meat" of the JavaScript plugin is in firesheep/xpi/modules. Firesheep.js implements the high-level operations such as startCapture() and stopCapture(). FiresheepSession.js is the glue between the plugin and the firesheep-backend binary that does the actual packet collection. Finally FiresheepWorker.js does the work of reading the packet summary from firesheep-backend (via JSON) and processing it by checking the appropriate website-specific handler and seeing if the desired cookie is present. Finally, how do the pieces all get put together into the add-on that you can download? Firefox extensions are explained on the developer website. The install.rdf file (in firesheep/xpi) gives the Firefox browser the main information about the extension.Well, that summarizes how the Firesheep plugin works based on my analysis of the code. Hopefully this will help you realize the risk of using unsecured Wi-Fi networks!Email ThisBlogThis!Share to TwitterShare to FacebookShare to PinterestLabels:random,reverse-engineering6 comments:tribesaid...Does Firesheep only work on open wifi networks?
Or does it also work on WEP and WPA2-PSK password protected wifi hotspots?
An example: My local coffee shop has a password protected hotspot, but they give the password to anyone who asks. So if you were logged into the hotspot would someone else in the coffeshop who is also logged in and running firesheep be able to sniff your cookies?
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None of the WordPress plugins above protect you at all from firesheep or session hijacking at all, and yes SSL is the only way that you can be relatively assured that your connection is secure and also that you are talking to the site that you think you are. SSL validates the identity of the server as well as encrypting the connection.
The easiest way to do this would be to follow our guide on how to clone a website to make an exact copy of the facebook login page. Then you'll just need to tweak the submit form to copy / store / email the login details a victim enters. If you need help with the exact steps, there are detailed instructions available by Alex Long here on Null Byte. Users are very careful now with logging into Facebook through other links, though, and email phishing filters are getting better every day, so that only adds to this already difficult process. But, it's still possible, especially if you clone the entire Facebook website.
Everybody please stop commenting here about "hacking into you'r friends facebook." We're not going to help you or something. Just google it and you'll find out how it works. you could also use My post if that helps you further, but STOP posting here. This is a comment section not a asking section!
I also see you on youtube, anonymous. Well, with pleasure, I am Htag, from anon, nice to meet you. Also, we are sharing and caring about other, may I know your facebook name or any contact email. It will be pleasure.
anyone wants to help me out here?? i was wondering what if i try to hack a profile and facebook notify that person that someone is trying to hack his profile from a specific country. he would automatically understand that its me :(
this is srijith from india.Guys someone hacked my facebook account by using phishing method. i don't know how to recover my account. he also hacked my facebook linked all sites and accounts also, pls grant me and pls help me out.
My facebook account was hacked about a month ago & the hacker added their email, changed the phone number, and added 2 step verification. I have reset the password but cannot get pass the code generator. I tried to go through the Facebook Help Center but I cannot even submit an ID recovery. Please, I need help accessing this Facebook account. Any advice or help is appreciated. Can I regain access without spending money on software?
The two key attacks it mitigates are sslstrip and MITM attacks with self signed certificates (such as the one by the Syrian government against Facebook). It can also help mitigate HTTPS implementation problems that could lead to firesheep style attacks.
One of the things that could be in play here is the "man in the middle" scheme or something akin to firesheep. I'm not the right person to help with issues like this but you are experiencing an unusual situation. Googling these terms might help.
Unfortunately, when I originally signed up for Facebook, I used the same low security password as well. While I quickly changed my facebook password, I found it very difficult verifying that the password was the source of the exploit. be457b7860
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