Local Privilege Escalation Vulnerability in Cisco VPN Client

Recently a local privilege escalation vulnerability was found in Cisco’s VPN Client. When Cisco VPN Client is installed, a windows service “Cisco Systems, Inc. VPN Service” is created. The service runs the binary C:\Program Files\Cisco Systems\VPN Client\cvpnd.exe as Local System. Therefore, if you replace cvpnd.exe with another executable, then that program will be ran at startup with root privileges! I fond this vulnerability interesting because it is used at my college to authenticate students when they connect to the wireless network. For that reason, almost every student with a laptop has this software installed, and students are allowed to borrow school laptops from the student center to use the wireless internet. Consequently, anyone could borrow a laptop, gain root access thought the vulnerability, and install a keylogger that sends every keystroke to the attacker’s email! Its been 5 days seen this vulnerability was discovered, and Cisco has already issued a patched version. However, how long will it take for the school to update all their computers? This is just another reason why you should be careful when using school computers!

Video Demonstration: (shows how to gain root access and change the Admin password with this vulnerability)

Read More......

Hacking Basics - Backtrack

On the forums, there has been many questions concerning Backtrack. Therefore, we decided to make a video that tries to answer as many as these question as possible. In this episode we cover: Where to get Backtrack 2, How to burn an .ISO file, How to boot Backtrack 2, How to login, and start the GUI interface. Also, we illustrate basic Linux commands, and how to set up your Network Interfaces.

Download video here (Right Click -> Save Link as)

Read More......

Exploit Hacking

Since Infinity Exists hasn’t had time to release a new episode, I decided to revamp a two part series, Exploit Hacking and Exploit Hacking 2 - Privilege Escalation, that I made a year before Infinity Exists was created. It may be a little dated, but it provides great information on how a hacker can find an vulnerability on a remote computer and exploit it to gain remote access. Also, the video shows how a hacker can raise their privileges on the remote machine to administrator. I added text throughout the video to make it easier to understand. Furthermore, Infinity Exists plans to do a more up-to-date and more detailed series of episodes on “exploit hacking.”


Full Scale Video Here
Download Here

Read More......

Singing Tesla Coil

This weekend was UIUC’s annual Engineer Open House, and last night there was a Singing Tesla Coil show. The Tesla coils were built by Steve Ward, a EE student at UIUC. “Steven has developed Tesla Coils with high levels of control allowing audio modulation of their lightning-like display. Interfacing the Continuum Fingerboard with this technology will generate a musically expressive and highly energetic, multi-voiced performace” (EOH Exhibit Guide).

Full Scale Video Here
Download Here

Read More......

Tapping a 66 Block Telephone Network Interface

Awhile ago I was asked to rewiring a company’s 66 Block, a type of punchdown block used to connect sets of wires in a telephone system, because they wanted to replace their plain old telephone service (POTS) with multiple VoIP telephone lines. I had little knowledge on the 66 Block before doing this job, so I got out my trusty Beige Box to figure out how it was wired. Here’s a short video on how to tap a 66 Block. (Watch Episode 6 if you need help making a Beige Box)

Full Scale Video Here
Download Here

Read More......

Beer Pong Table

The last few days I’ve been helping my friend Charlie construct his Illinois State University (ISU) Beer Pong Table. The legs and supports of the table are made from his roommate Brandon’s hockey sticks, and the table top is made of plywood with a 1/8″ sheet of Acrylic on top. Our friend Tyler etched ISU’s mascot, Red Bird, into the Acrylic; it was done free-hand with a dremel (Compare his etching to image). Tyler also did the text on the table: “ISU” and ” What you call Addiction … We call Dedication”. I did the LED array and the wiring; when the LEDs are lit, the light catches the etching in the acrylic. The LED controller I made allows you to switch between the LEDs being constantly on or controlled by an audio input. However, the LEDs we used are only lit at a specific voltage, so it doesn’t work very well. Full Scale Video Here
Download Here
Pre-Amp Schematic

Read More......

Password Phishing

Phishing is a method of obtaining sensitive information such as usernames and passwords by pretending to be a trusted website. Tehdead shows us a variety of password phishing techniques that enable an attacker to trick a user into giving up their login information. The first step is to create a fake login identical to the login on the trusted website. In order to not raise suspicion, Tehdead explains two methods to capture the victim’s password and then transfer them to the real website. One method is to sumbit the information to a php page that is disguised as a pop-up advertisment, and the other is to send the username and password to a simular php page that is contained in an iframe. Lastly, Tehdead describes how to use link manipulation with BBcode to social engineer a victim into going to the fraudulent website. Full Scale Video Here
Download Here

Read More......

Bypass Cisco Clean Access & Cisco NAC Appliance

Cisco NAC Appliance (formerly Cisco Clean Access) is a Network Admission Control (NAC) product that is uses to enforce security policy on computers seeking to access network resources. Therefore, an administrator can force users to comply to a policy that requires the user to install or remove programs. For example, a university I previously attended required students to install McAfee Antivirus Software and remove Peer-to-Peer programs before they were allowed to access the internet.

To bypass Cisco Clean Access a user can simply change their browser’s User Agent to an Operating System that does not require this program [ex. Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.7.8) Gecko/20050511]. An easy way to change your User Agent in Firefox is to download User Agent Switcher.

With Cisco NAC Appliance, Cisco added additional detection mechanisms such as TCP fingerprinting and JavaScript OS detection, so the User Agent trick will not work. However, by changing the default parameters of the Windows TCP/IP stack the user can still connect to the network without running any host-based checks. You can do this with Kevin.

Video Demonstration:

Full Scale Video Here
Download Here

Read More......

Manipulating Windows User Accounts

Xauthzx’s Underground video describes how to Create, Delete, and Manipulate Windows user accounts from the command line. Although it is a relatively simple procedure, knowing how to use the Windows net command can be very helpful in many situations.

User Commands
net user – Display User Accounts
net user [Username] * – Change a User’s Password
net user [Username] /del – Delete a User
net user [Username] /add – Add a User
net localgroup – Display Local Groups
net localgroup [Group] [Username] /add – Add User to Local Group

Other Useful Commands
net start – Display Services
net start [Service] – Start Service
net stop [Service] – Stop Service
net share – Manage Shared Folders
net view – Display Network Computers
net view \\[Computer Name] - Display Network Computer’s Shared Folders
net use * \\[Computer Name]\[Shared Folder] – Mount Network Shared Folder

Full Scale Video Here
Download Here

Read More......

Episode 12 - Hacking Basics - Backtrack

On the forums, there has been many questions concerning Backtrack. Therefore, we decided to make a video that tries to answer as many as these question as possible. In this episode we cover: Where to get Backtrack 2, How to burn an .ISO file, How to boot Backtrack 2, How to login, and start the GUI interface. Also, we illustrate basic Linux commands, and how to set up your Network Interfaces.

Download video here (Right Click -> Save Link as)

Read More......