BlackSheep – Detect Users Of FireSheep On The Network

Use Netsparker


As you surely know, things blew up recently at Toorcon 12 with the release of the much talked about Firefox plugin called Firesheep.

There were various discussions about how to mitigate against it like using Firefox plug-ins to force SSL connections (where available). Microsoft also tried to secure Hotmail with SSL but kinda b0rked that too.

For the 1 person in the World left that doesn’t know, Firesheep allowed any user to seamlessly hijack the web session of another user on the same local network. Although such attacks are not new, the ease of use presented by Firesheep brought session hijacking to the masses.

BlackSheep, also a Firefox plugin is designed to combat Firesheep. BlackSheep does this by dropping ‘fake’ session ID information on the wire and then monitors traffic to see if it has been hijacked. While Firesheep is largely passive, once it identifies session information for a targeted domain, it then makes a subsequent request to that same domain, using the hijacked session information in order to obtain the name of the hijacked user along with an image of the person, if available. It is this request that BlackSheep identifies in order to detect the presence of Firesheep on the network. When identified, the user will be receive the following warning message:


BlackSheep - Detect FireSheep

It should be noted that Firesheep and BlackSheep cannot be installed on the same Firefox instance as they share much of the same code base. If you want to run both Firesheep and BlackSheep on the same machine, they should be installed in separate Firefox profiles.

Requirements

In order to install BlackSheep, you need:

  • Mac OS X: 10.5 or newer on an Intel processor.
  • Windows: XP or newer. Install Winpcap first!
  • Firefox: 3.5 or newer. 32-bit only.
  • Linux : details here

You can download BlackSheep here:

blacksheep-latest.xpi

Or read more here.

Posted in: Countermeasures, Forensics, Networking Hacking, Security Software

, , , ,


Latest Posts:


BDFProxy - Patch Binaries via MITM - BackdoorFactory + mitmProxy BDFProxy – Patch Binaries via MiTM – BackdoorFactory + mitmproxy
BDFProxy allows you to patch binaries via MiTM with The Backdoor Factory combined with mitmproxy enabling on the fly patching of binary downloads
Domained - Multi Tool Subdomain Enumeration Domained – Multi Tool Subdomain Enumeration
Domained is a multi tool subdomain enumeration tool that uses several subdomain enumeration tools and wordlists to create a unique list of subdomains.
Acunetix Vulnerability Scanner For Linux Now Available Acunetix Vulnerability Scanner For Linux Now Available
Acunetix Vulnerability Scanner For Linux is now available, now you get all of the functionality of Acunetix, with all of the dependability of Linux.
Gerix WiFi Cracker - Wireless 802.11 Hacking Tool With GUI Gerix WiFi Cracker – Wireless 802.11 Hacking Tool With GUI
Gerix WiFi cracker is an easy to use Wireless 802.11 Hacking Tool with a GUI, it was originally made to run on BackTrack and this version has been updated for Kali (2018.1).
Malcom - Malware Communication Analyzer Malcom – Malware Communication Analyzer
Malcom is a Malware Communication Analyzer designed to analyze a system's network communication using graphical representations of network traffic.
WepAttack - WLAN 802.11 WEP Key Hacking Tool WepAttack – WLAN 802.11 WEP Key Hacking Tool
WepAttack is a WLAN open source Linux WEP key hacking tool for breaking 802.11 WEP keys using a wordlist based dictionary attack.


5 Responses to BlackSheep – Detect Users Of FireSheep On The Network

  1. mpg November 25, 2010 at 12:34 pm #

    Sadly, the same protection against Firesheep can also be used to defeat Blacksheep. Set Firesheep to sniff on your wireless interface, but set all of your traffic to use an encrypted tunnel.

  2. Fred November 26, 2010 at 7:10 am #

    If i understand :

    To use BlackSheep, the client’s networkcard must accept promiscuous mode and the reply of the hijack must be on the same network access ?

    If it doesn’t accept promiscuous mode and you use TOR to replay, i think blacksheep can’t see anything…

    • Darknet November 27, 2010 at 9:30 am #

      Yes to both, you gotta be on same LAN (connected via same AP) and your card must be able to enter promiscuous mode to pull the traffic off the wire.

      • Bogwitch November 30, 2010 at 9:39 am #

        Fred,

        If you’re using TOR to log in to sites, the exit node operator can view all your traffic (and there’s a history of them doing so)

  3. Gorindor December 1, 2010 at 8:56 pm #

    If you are running Windows 7 and have User Access Control (UAC) enable one must go to “Start > All Programs > Mozilla” and then right-click on “Firefox” and select “Run as administrator…” in order for the BlackSheep plugin to see your network adapter.