Posts Tagged ‘Elcomsoft Wireless Security Auditor’

Breaking Wi-Fi Passwords: Exploiting the Human Factor

Thursday, March 8th, 2012

Attacking Wi-Fi passwords is near hopeless if a wireless hotspot is properly secured. Today’s wireless security algorithms such as WPA are using cryptographically sound encryption with long passwords. The standard enforces the use of passwords that are at least 8 characters long. Encryption used to protect wireless communications is tough and very slow to break. Brute-forcing WPA/WPA2 PSK passwords remains a hopeless enterprise even if a horde of GPU’s is employed. Which is, in general, good for security – but may as well inspire a false sense of security if a weak, easy to guess password is selected.

Elcomsoft Wireless Security Auditor is one tool to test how strong the company’s Wi-Fi passwords are. After checking the obvious vulnerabilities such as open wireless access points and the use of obsolete WEP encryption, system administrators  will use Wireless Security Auditor that tries to ‘guess’ passwords protecting the company’s wireless traffic. In previous versions, the guessing was limited to certain dictionary attacks with permutations. The new version gets smarter, employing most of the same guessing techniques that are likely to be used by an intruder.

Humans are the weakest link in wireless security. Selecting a weak, easy to guess password easily overcomes all the benefits provided by extensive security measures implemented in WPA/WPA2 protection. In many companies, employees are likely to choose simple, easy to remember passwords, thus compromising their entire corporate network.

The New Attacks
The new attacks help Elcomsoft Wireless Security Auditor recover weak passwords, revealing existing weaknesses and vulnerabilities in companies’ wireless network infrastructure.

Word Attack
If it’s known that a password consists of a certain word, the Word attack will attempt to recover that password by trying heavily modified versions of that word. This attack only has two options: you can set the source word and you can disable all permutations except changing the letter case. In addition, we can apply permutations to the source word first, forming a small dictionary; then perform a full dictionary attack, applying various permutations to all words from the newly formed list.

Mask Attack
Certain passwords or password ranges may be known. The mask attack allows creating a flexible mask, brute-forcing the resulting limited combination of passwords very quickly. The masks can be very flexible. One can specify placeholders for static characters, letter case, as well as full or limited range of special characters, digits or letters. Think of the Mask attack as an easy (and very flexible) way to check all obvious passwords from Password000 to Password999.

Combination Attack
You have two dictionaries. We combine each word from one dictionary with every word from another. By default, the words are combined as is, but you can increase the number of possible combinations by allowing delimiters (such as space, underscore and other signs), checking upper/lower case combinations or using extra mutations.

Hybrid Attack
This is one of the more interesting attacks out there. In a sense, Hybrid attacks come very close to how real human intruders think. The Hybrid attacks integrates ElcomSoft’s experience in dealing with password recovery. We’ve seen many (think thousands) weak passwords, and were able to generalize ways people are making them. Dates, names, dictionary words, phrases and simple character substitutions are the most common things folks do to make their passwords ‘hard to guess’. The new Hybrid attack will handle the ‘hard’ part.

Technically, the Hybrid attack uses one or more dictionaries with common words, and one or more .rul files specifying mutation rules. We’re supplying a few files with the most commonly used mutation rules:

Common.rul – integrates the most commonly used mutations. In a word, we’ve seen those types of passwords a lot, so we were able to generalize and derive these rules.
Dates.rul – pretty much what it says. Combines dictionary words with dates in various formats. This is a pretty common way to construct weak passwords.
L33t.rul – the “leet” lingo. Uses various combinations of ASCII characters to replace Latin letters. C001 hackers make super-strong passwords with these… It takes minutes to try them all.
Numbers.rul – mixes dictionary words with various number combinations.

Hacking For Dummies, 3rd Edition by Kevin Beaver

Tuesday, November 2nd, 2010

Although this new book is on sale from January this year, we are happy to officially say our words of gratitude to Kevin Beaver and advise it to you.

In his book Kevin insists that the best way to really understand how to protect your systems and assess their security is to think from a hacker’s viewpoint, get involved, learn how systems can be attacked, find and eliminate their vulnerabilities.  It all practically amounts to being inquisitive and focusing on real problems as in contrast to blindly following common security requirements without understanding what it’s all about.

Kevin extensively writes on the questions of cracking passwords and weak encryption implementations in widely used operating systems, applications and networks. He also suggests Elcomsoft software, in particular Advanced Archive Password Recovery, Elcomsoft Distributed Password Recovery, Elcomsoft System Recovery, Proactive Password Auditor, and Elcomsoft Wireless Security Auditor, as effective tools to regularly audit system security and close detected holes.

In this guide Kevin communicates the gravity of ethical hacking in very plain and clear words and gives step –by- step instructions to follow. He easily combines theory and praxis providing valuable tips and recommendations to assess and then improve security weaknesses in your systems.

We want to thank Kevin for testing and including our software in his very “digestible” beginner guide to hacking and recommend our readers this book as a helpful tool to get all facts in order. :)

ElcomSoft News

Wednesday, July 22nd, 2009

 As the second summer month is coming to an end, it’s time to sum up our news and updates that you might have missed because of vacation in some tropical heaven. Last two weeks brought us really hot days, not only because of the temperature in Moscow City but also due to hard work on program updates. Here is the news:

  • We released the new version of Distributed Password Recovery. It features support for TheBat! and TheBat! Voyager mail clients master passwords (masterkey.dat) and passwords to TheBat! backup files (*.tbk). The GPU acceleration has been extended and now works for Domain Cached Credentials (DCC), as well as Office 2007, Adobe PDF 9, Windows logon passwords (LM and NTLM), WPA/WPA2, and MD5 hashes.
  • A new version of Elcomsoft Wireless Security Auditor was released. EWSA 1.03 is able to extract WPA-PSK password hashes from local systems when Wireless Zero Configuration is used.
  • Our website is now available in Spanish, Italian, and Polish. We promise to add more languages soon to bring our customers information in their native tongues.
  • Follow us on Twitter to be the first to receive our news or become a fan on our brand-new Facebook page. You can also subscribe to our newsletter.

ATI’s Hall of Fame

Thursday, June 18th, 2009

ATI Stream Developer Showcase enrolled our Elcomsoft Wireless Security Auditor in its security section, among other “notable applications” that use ATI Stream technology:

http://developer.amd.com/SAMPLES/STREAMSHOWCASE/Pages/default.aspx#security

Yet another pleasant morning news :)

 

Living to the 64-bit rhythms

Tuesday, May 26th, 2009

All modern AMD and Intel processors are 64-bit and corresponding Windows versions are also on the market. It is highly recommended to use 64-bit systems (though 32-bit systems perfectly work on 64-bit processors) because in this case more than 3 Gb RAM can be employed, and today we have lots and lots of 64-bit systems, so it’s getting more and more critical. (more…)

Too much security won’t spoil the router, will it make it better?

Monday, May 18th, 2009

A number of D-link routers are now equipped with captcha feature. Sounds interesting. 

Chief technology officer in D-link says: "We are excited to be the first in the market to implement captcha into our routers, providing yet another layer of security to our customers".

No doubt, captcha is a wonderful spam filter for mails and a reliable obstacle to unauthorized access in the web, but is it as good for routers as for the web? (more…)