Timisoara Wireless Survey

TIMISOARA WIRELESS SURVEY

About me• Cristian Vat• @deathy

• Java developer

• Random interests in networking/security.

WIRELESSIt’s everywhere

Wireless Security?

Encryption• Open is Open

• WEP is broken since a long time, yet still somewhat used

• WPS is usually broken

WPA/WPA2 saves us ?• Algorithm is sound• Still could be bad implementations• PSK is widest used, same problem as with any password:

• Dictionaries• Bruteforce

• Just capture one 4-way handshake passively• Everything else offline• No forward secrecy

Economics of GPU-based cracking• DEFCON19, Robert "Hackajar" Imhoff-Dousharm, SanDisk Corporation,

“Economics of Password Cracking in the GPU Era”• Personal benchmarks:

• old MacBook Pro i7: 3700 hashes/s (on all 4 cores)• old GPU Nvidia GeForce GTX 560: 29K hashes/s• new GPU Nvidia GeForce GTX 980 Ti: 265K hashes/s

• With recently released oclHashCat2: 282K hashes/s

• Or you can use online services...

10 characters minimum• On my personal consumer GPU:

• 8 characters lower-case: 8.5 days• 10 characters lower-case: 15.8 years

WHY CARE?

From China to Auchan with Love

Secure but leaking information• Phones• Mobile hotspots• *-PC_Network• Printers• TVs (who thought this was a good idea?)

• Where can I find myself a nice 40” Samsung TV?

HP Printers, oh my• Saw 156 HP Printers with wireless enabled.

• 93 of them had completely open wireless networks. That’s 60% completely open.• But it’s just a printer.

• No. It’s a linux device on or near your network.• Print/Scan/Fax logs• Maybe joined to your domain• It can probably run DOOM• DEFCON 19: From Printer To Pwnd: Leveraging Multifunction Printers During

Penetration Testing

Wardriving like it’s 2004

https://www.flickr.com/photos/shawnville/2114500402/

Warwalking in 2015

https://www.flickr.com/photos/robino/543890501/

Warwalking in 2015• Hardware needed: Android phone• Software needed: there are lots of apps for that• Wigle:

• https://wigle.net/• https://play.google.com/store/apps/details?id=net.wigle.wigleandroid• Website and android app. • Website currently holds 227,870,055 networks• Global stats: https://wigle.net/stats• Android app saves to a SQLite database

Data set• Gathered almost only in Timisoara during 2015• Wireless Networks (APs) seen: 36 184• Location database records: 170 712

• BSSID, SSID, GPS coordinates (best and all), signal strength, network advertised capabilities

• Have good ideas? Talk to me.

Current Stats

•https://maiebanatulfruncea.com/TimisoaraWirelessSurvey/

QUESTIONS?