You think your WiFi is safe?
0 likes•1,493 views
This document summarizes a presentation on wireless security testing and attacks. It describes tools like airodump-ng for packet sniffing, aireplay-ng for packet injection, and aircrack-ng for cracking wireless encryption keys. It demonstrates attacks like cracking WEP encryption, exploiting vulnerabilities in WPS, and performing man-in-the-middle attacks. The presentation emphasizes that these attacks would be illegal to perform without permission and stresses the importance of responsible disclosure.
You think your WiFi is safe?
- 1. You think your Wifi is Safe? Rob Gillen @argodev
- 2. CodeStock is proudly partnered with: RecruitWise and Staff with Excellence - www.recruitwise.jobs Send instant feedback on this session via Twitter: Send a direct message with the room number to @CodeStock d codestock 406 This session is great! For more information on sending feedback using Twitter while at CodeStock, please see the “CodeStock README” in your CodeStock guide.
- 3. what we do consulting training design debugging who we are Founded by top experts on Microsoft – Jeffrey Richter, Jeff Prosise, and John Robbins – our mission is to help our customers achieve their goals through advanced software-based consulting and training solutions. how we do it Training • On-site instructor-led training Consulting & Debugging • Virtual instructor-led training • Architecture, analysis, and design services • Devscovery conferences • Full lifecycle custom software development • Content creation Design • Project management • User Experience Design • Debugging & performance tuning • Visual & Content Design • Video & Animation Production wintellect.com
- 4. Don’t Be Stupid The following presentation describes real attacks on real systems. Please note that most of the attacks described would be considered ILLEGAL if attempted on systems that you do not have explicit permission to test and attack. I assume no responsibility for any actions you perform based on the content of this presentation or subsequent conversations. Please remember this basic guideline: With knowledge comes responsibility.
- 5. Disclaimer The content of this presentation represents my personal views and thoughts at the present time. This content is not endorsed by, or representative in any way of my employer nor is it intended to be a view into my work or a reflection on the type of work that I or my group performs. It is simply a hobby and personal interest and should be considered as such.
- 6. Overview • Pre-Requisite Knowledge • Various Security Approaches • Tools and Attacks
- 7. Required Gear • Network Adapter that supports “Monitor” mode. – Equivalent to promiscuous mode on a normal NIC • Windows, MAC, or Linux – Linux tools tend to be more readily available
- 8. Wireless Packet Frames • Management Frames • Control Frames – Authentication – Request to Send – De-authentication (RTS) – Association Request – Clear to Send (CTS) – Association Response – Acknowledgment (AWK) – Re-association • Data Frames Request – Re-association Response – Disassociation – Beacon – Probe Request – Probe Response
- 9. Packet Sniffing • Filters: – wlan.fc.type • == 0 (mgmt frames) • == 1 (control frames) • == 2 (data frames) – wlan.fc.subtype • == 8 (beacons) • (wlan.fc.type == 0) && (wlan.fc.subtype == 8)
- 10. Packet Sniffing • Determine the channel of the network we are interested in – required for sniffing data packets – airodump-ng • iwconfig mon0 channel 11 (demo pre/post)
- 11. Packet Injection • aireplay-ng – Inject packets onto a specific wireless network without specific association to that network – Can target specific channels, mask MAC addresses, etc. – Does not require association
- 12. Regulatory Issues • Available Channels • Radio Power Levels – iw reg set US – iw reg set BO
- 14. DEMO: Hidden SSID • Show packet capture with the SSID • Hide SSID • Prove it is now hidden • Solve for X – Passive (wait for valid client) – wireshark filter – Use aireplay-ng to send deauth packet to force the discovery • Probe Request/Probe Response packets
- 16. DEMO: MAC Filters • Enable MAC Filtering on the WAP • Prove that a client cannot connect • Use airodump-ng to show associated clients • Use macchanger to spoof the whitelisted address and connect.
- 18. DEMO: Shared Key Authentication • Illustration (steal picture from Wikipedia/netgear?) • Configured AP for Shared Key/Update Client • Use airodump-ng to capture/log the authentication scheme + keystream – Wait for valid client or send deauth pkt • Use aireplay-ng to pass back the captured auth pkt • TIP: DOS by filling up AP tables (wrapper around airreplay-ng)
- 20. DEMO: WEP Encryption • Capture data packets (ARP) from a known/trusted client (airodump-ng) • Replay them/re-inject between 10- 100,000 times (aireplay-ng) • Crack them (aircrack-ng) • “Guaranteed” crack
- 22. DEMO: WPA/2 Encryption • Vulnerable to dictionary attacks • Collect authentication handshake • Select dictionary file and run the cracker • Works for WPA, WPA2, AES, TKIP
- 23. Tools
- 24. Tools • Jasegar (Pineapple IV) • I can be anything you want me to be
- 29. Tools • Reaver Pro (WPS Exploit) • 4-10 hours and your network is mine
- 30. What is Safe? • Stop using Wi-Fi • Avoid open Wi-Fi networks • Always use SSL • Use VPN • Disable Auto-Connect… on *all* devices • Hard/complex network keys • WPA-Enterprise / RADIUS / PEAP / EAP-TTLS • Disable WPS!
- 31. Equipment List • Two Laptops • Any Wireless Access Point • Alfa Card http://www.amazon.com/gp/product/B002BFMZR8 • Yagi Antenna http://www.amazon.com/gp/product/B004L0TKW4 • Reaver Kit http://hakshop.myshopify.com/products/reaver -pro • WiFi Pinapple http://hakshop.myshopify.com/collections/fro ntpage/products/wifi-pineapple
- 32. Learning More • http://www.securityfocus.com • http://www.aircrack-ng.org • http://raulsiles.com/resources/wif i.html • http://www.willhackforsushi.com