Hacking For Dummies, 3rd Edition by Beaver Kevin

Author:Beaver, Kevin [Beaver, Kevin]
Language: eng
Format: mobi, epub
Published: 0101-01-01T00:00:00+00:00

Chapter 9: Wireless LANs

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WLAN analyzer supports this format), load the capture file into the program, and shortly thereafter you have the PSK. EWSA is a little different because it can crack WPA and WPA2 PSKs in a fraction of the time it would normally take, but there’s a caveat. You have to have a computer with a supported NVIDIA or ATI video card. Yep, EWSA doesn’t just use the processing power of your CPU — it also harnesses the power and mammoth acceleration capabilities of the video card’s graphical processor unit (GPU). Now that’s innovation!

The main EWSA interface is shown in Figure 9-7.

Figure 9-7:

Using

Elcomsoft

Wireless

Security

Auditor to

crack WPA

pre-shared

keys.

Using EWSA, you can try to crack your WPA/WPA2 PSKs at a rate of up to 50,000 WPA/WPA2 pre-shared keys per second. Compare that to the lowly few hundred keys per second using just the CPU and you can see the value in a tool like this. I always say you get what you pay for.

If you need to use your WLAN analyzer to view traffic as part of your security assessment, you won’t see any traffic if WEP is enabled unless you know the WEP key associated with the network. You can enter the key into your analyzer, but just remember that hackers can do the same thing if they’re able to crack your WEP key by using one of the tools I mention earlier.

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