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Cracking WPA/WPA2 with Non-Dictionary Attacks

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n|u - The Open Security Community
n|u - The Open Security Community

null Pune Chapter - September 2012 Meet

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By Swaroop YermalkaR
Changing the world through Wireless Communication!
Dj Akhil Talreja
Dlink BT5 r3 laptop with wifi router Galaxy card pop
Simple WPA/2 Cracking Technique Brute-Force attack Understanding WPS [ Wi-Fi Protected Setup ] Exploring Reaver
1. Start Sniffing 2. Capture WPA Handshake 3. Apply Dictionary 4. Crack the password!
Supplicant Authenticator Probe req,resp Authentication RR, Association RR Pre-shared key 256bit Pre-shared key 256bit Snounce PTK PTK Message 2 Snounce + MIC Message 4 Key install Acknowledgement Source: securitytube.net
Step 1 Step 2
Step 3 Step 4
1. Monitor air for a new client trying to associate with the access point (passive)
2. De-authentication one or all clients and monitor reconnection (active) Legitimate client AP De-authentication Packet
Source: http://lastbit.com/pswcalc.asp
Wi-Fi Protected Setup (WPS; originally Wi-Fi Simple Config) is a computing standard that attempts to allow easy establishment of a secure wireless home network. Created by the Wi-Fi Alliance and introduced in 2007, the goal of the protocol is to allow home users who know little of wireless security and may be intimidated by the available security options to set up Wi-Fi Protected Access, as well as making it easy to add new devices to an existing network without entering long passphrases. Source: wikipedia
Reaver is fantastic tool to crack this WPS pin written by Craig Heffner. It performs a brute force attack against the AP, attempting every possible combination in order to guess the AP's 8 digit pin number. Since the pin numbers are all numeric, there are 10^8 (100,000,000) possible values for any given pin number. Source: Tactical Network Solutions articles
…use pin as master key! n0nEc@nhaCkthi$pa$sw0rd!!!
Keep non-dictionary, combination of symbols, digits and numbers. Ex: R0ck$t@R
1. Tactical Network Solutions 2. WiFi Security Megaprimer by Vivek Ramchandran
Feedback, questions and suggestions: swaroop.wireless@gmail.com Swaroop D. YermalkaR

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Cracking WPA/WPA2 with Non-Dictionary Attacks

  • 2. Changing the world through Wireless Communication!
  • 4.
  • 5.
  • 6. Dlink BT5 r3 laptop with wifi router Galaxy card pop
  • 7. Simple WPA/2 Cracking Technique Brute-Force attack Understanding WPS [ Wi-Fi Protected Setup ] Exploring Reaver
  • 8. 1. Start Sniffing 2. Capture WPA Handshake 3. Apply Dictionary 4. Crack the password!
  • 9.
  • 10. Supplicant Authenticator Probe req,resp Authentication RR, Association RR Pre-shared key 256bit Pre-shared key 256bit Snounce PTK PTK Message 2 Snounce + MIC Message 4 Key install Acknowledgement Source: securitytube.net
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  • 13. Step 3 Step 4
  • 14. 1. Monitor air for a new client trying to associate with the access point (passive)
  • 15. 2. De-authentication one or all clients and monitor reconnection (active) Legitimate client AP De-authentication Packet
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  • 20. Wi-Fi Protected Setup (WPS; originally Wi-Fi Simple Config) is a computing standard that attempts to allow easy establishment of a secure wireless home network. Created by the Wi-Fi Alliance and introduced in 2007, the goal of the protocol is to allow home users who know little of wireless security and may be intimidated by the available security options to set up Wi-Fi Protected Access, as well as making it easy to add new devices to an existing network without entering long passphrases. Source: wikipedia
  • 21.
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  • 23. Reaver is fantastic tool to crack this WPS pin written by Craig Heffner. It performs a brute force attack against the AP, attempting every possible combination in order to guess the AP's 8 digit pin number. Since the pin numbers are all numeric, there are 10^8 (100,000,000) possible values for any given pin number. Source: Tactical Network Solutions articles
  • 24.
  • 25. …use pin as master key! n0nEc@nhaCkthi$pa$sw0rd!!!
  • 26.
  • 27. Keep non-dictionary, combination of symbols, digits and numbers. Ex: R0ck$t@R
  • 28. 1. Tactical Network Solutions 2. WiFi Security Megaprimer by Vivek Ramchandran
  • 29. Feedback, questions and suggestions: swaroop.wireless@gmail.com Swaroop D. YermalkaR