Hak5 - Technolust since 2005 » XP

Episode 605 – Three VPN Servers and a Kindle Console

Darren — Wed, 16 Sep 2009 12:38:50 +0000

This week Shannon taps into a hidden Kindle serial port using a inty bitsy ribbon cable, a USB to Serial TTL cable and some jumpers in an attempt to hack root and finds herself upon the bootloader and nearly at a bash prompt. Darren guides you through the installation of VPN servers on Windows XP, Windows Server and Linux so you can keep your traffic secure in an encrypted tunnel while on untrusted networks.

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Hacking into the Kindle Bootloader Part 1

This week, I’m introducing the bootloader Kindle 1st gen hack.

Equipment:
Kindle 1st Generation
A computah!
USB to Serial TTL Cable
20 pin 0.5 mm flat cable
1 pin Jumper cables

Programs:
Putty

Igor Skochinsky explains how to hack into the bootloader of the Kindle very nicely on his blog, Reverse Everything. He includes screenshots, photos, and descriptions of everything you need to know to do this hack.
Part 1
Part 2

If you have any questions, you can email me at snubs@hak5.org!

Windows VPN Servers

In this segment I demonstrate setting up a VPN server in Windows XP which is rather limited at 1 concurrent connection. I also demonstrate building a Routing and Remote Access VPN server in Windows Server 2003.

Open Source VPN Server

I’m a big fan of open source. I’m also an overwhelmed systems administrator that likes easy. And when it comes to VPNs in Linux, OpenVPN is the go to solution. That’s why I’m excited about OpenVPN Access Server — an set of installation and configuration tools that simplifies rapid deployment of a VPN solution.

In this segment I demonstrate setting up this nifty, lightweight and powerful server in a typical home user scenario. I also speak to the fact that it can integrate with Active Directory via LDAP or even a RADIUS server for authentication. The web based backend makes administration a breeze and the web frontend makes client setup even easier. All the clients have to do is login to a website and download a prepackaged and configured connection app for Windows, Mac or Linux.

This package makes it incredibly easy to deploy a VPN server. But it comes at a cost. OpenVPN-AS requires a license key for each concurrent connection. Two are provided for free and additional licenses are $10 ea. Still a far cry from a windows Client Access License!

In future segments we’ll be getting our hands dirty with OpenVPN standard as well as some other interesting VPN technologies so be sure to send your feedback, requests and flames to darren@hak5.org

Episode 419 — GPU accelerated MD5 Brute Forcing, Easy Windows Password Recovery with Ophcrack live USB and Dave Randolph

Darren — Wed, 07 Jan 2009 17:43:08 +0000

In this first episode of ‘09 Dave Randolph joins us to geek out about all things video. Darren whips up a Password Cracking Cocktail and shows off a wicked fast MD5 brute force tool that harnesses the power of your Nvidia graphics card. Shannon saves the day by recovering her sisters Windows password with Ophcrack Live. And Evil Server gets his evil on while we were away on holiday.

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Show Notes

MD5 Brute Forcing with your graphics card

Since Nvidia released the CUDA API for Windows, Mac and Linux a number of advances have taken place in the world of brute forcing. In this episode I feature a tool by Svarychevski Michail Aleksandrovich that claims to be the world’s fastest MD5 cracker — BarsWF

Using the brute forcer with a couple Nvidia 8 series or newer graphics cards you’re able to achieve unprecidented speeds. I’ve seen claims of nearly 4 billion hashes per second with quad SLI.

CUDA has also spurred other developments, such as this NTLM brute forcer for Linux.

In my segment I go into the very basics of password cracking theory and MD5 hashes with some simple scenarios. My aim is to provide a fundamental understanding of the concepts. If you’re interested in reading more I suggest starting here.

–Darren Kitchen

Windows Password Recovery with Ophcrack Live USB

Recovering Windows Passwords coulnd’t be easier with Ophcrack Live on USB. Whether it’s your sister’s forgotten XP account or [insert other legit reason] a little USB booting and Rainbow Table loving’s got you covered.

Preparing an Ophcrack USB key is as simple as formatting your drive for FAT32 with the HP USB format tool. Downloading and launching USBOphcrack.exe and running the included batch file. The program will download a small set of rainbow tables and prepare your USB drive.

For even higher password recovering accuracy I recommend finding a larger set of Ophcrack compatible rainbow tables. Or if you’re feeling adventerous why not try out the Hak5 community rainbow tables — a whopping 120GB of NTLM goodness.

–Shannon Morse

Be sure to follow one of us on Twitter if you’ll be at CES this week. We’ll be there finding all the best hackable gadgets!

Season 1 Episode 4

Darren — Sat, 05 Nov 2005 18:08:25 +0000

In this episode of Hak.5 Wess builds a mini arcade cabinet for under $100, Harrison attacks SSL with Whoppix, Darren defends himself by setting up a VPN server on XP, and Jon & Harrison take on buffer overflows with beer. Plus an interview with a Goldeneye Source developer, exclusive in-game video, and more Microshaft than you can wave a rounded IDE cable at. Special guest intro by Jenn Cutter from OpenAlpha and new theme music by Ashley Witt.

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Length: 34:30

Season 1 Episode 2

Darren — Mon, 05 Sep 2005 17:17:33 +0000

In this episode of Hak.5 we show you how to install a 12-volt accessory outlet in your case, add a webcam to the light script, keep your taskbar clean with a free utility, manage the Windows XP firewall from the command line, create a leet external hard drive case, and install a unix-like disk image over a network. Plus a special interview with an Internet Icon.