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HACKING & INFORMATION SECURITY Presents: With TechNext

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Page 1: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

HACKING & INFORMATION SECURITY Presents:

-­‐With  TechNext  

Page 2: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

We  Are…The  Speakers…  

Sudarshan  Pawar    Cer.fied  Security  Expert(C.S.E.)  Cer.fied  Informa.on  Security  Specialist  (C.I.S.S.)  Security  Xplained  (TechNext  Speaker)  Computer  Engg.  &  a  Security  Professional  

   Prakashchandra  Suthar  Security  Enthusiast  

Cisco  Cer.fied  Network  Associate  Red  Hat  Linux  Cer.fied  

Security  Xplained  (TechNext  Speaker)  Computer  Engg  

Security  Researcher.    

Page 3: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))
Page 4: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Topics  to  be  covered  

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools    We  are  not  including  stats,  history,  who  did  what/when/why-­‐>  Bcoz  it’s  Booooring….!!!  U  can  

google  them  later….!    

Page 5: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Current  Genera.on  

Page 6: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

   

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 7: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Wifi  Basics    

•  WiFi(Wireless  Fidelity)-­‐>Wireless  networks(commonly  referred  as  WLAN  

•  Developed  on  IEEE  802.11  standards  •  Wireless  networks  include:  Bluetooth,  Infrared  communica.on,  Radio  Signal  etc.  

•  Components  used:    o Wireless  Client  Receiver  o Access  Point  o Antennas  

Page 8: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 9: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Extension  to  a  wired  network    

(BROADBAND  ROUTER)  

(ACCESS  POINT)  

(EXTENSION  POINT)  

Page 10: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Mul.ple  Access  points    

(BROADBAND  ROUTER)  

(ACCESS  POINT-­‐1)  

(ACCESS  POINT-­‐2)  

Page 11: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

LAN  -­‐2-­‐LAN      

LAN-­‐1   LAN-­‐2  

Page 12: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

3g  Hotspot  

   GPRS          3G          4G  

Internet  

Page 13: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 14: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

How  many  of  you  have  tried  this???  

Page 15: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WiFi  Standards  Points   802.11b   802.11a   802.11g   802.11n  

Extension  to   802.11   802.11   802.11a   802.11g  

Bandwidth  (Mhz)   20  (11Mbps)   20  (54Mbps)   20  (54Mbps)   20  (54Mbps)  40  (150Mbps)  

Frequency(Ghz)   2.4    5    2.4   2.4,  5  

Pros   Lowest  cost;  signal  range  is  good  and  not  easily  obstructed    

fast  maximum  speed;  regulated  frequencies  prevent  signal  interference  from  other  devices    

fast  maximum  speed;  signal  range  is  good  and  not  easily  obstructed      

fastest  maximum  speed  and  best  signal  range;  more  resistant  to  signal  interference  from  outside  sources    

Cons   slowest  maximum  speed  

 highest  cost;  shorter  range  signal  that  is  more  easily  obstructed  

costs  more  than  802.11b;  appliances  may  interfere  on  the  unregulated  signal  frequency  

standard  is  not  yet  finalized;  

Page 16: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Are  u  seriously  concerned  about  wifi  security?????  Be  honest!  

Page 17: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 18: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WEP(Wired  Equivalence  Privacy)  

•  The  first  encryp.on  scheme  made  available  for  Wi-­‐Fi.  

•  Uses    24  bit  ini.aliza.on  vector  for  cipher  stream  RC4  for  confiden.ality  

•  CRC-­‐32  bit  checksum  for  integrity.  •  Typically  used  by  home  users.  •  Uses  64,128,  256  bit  keys  •  Flawed  from  the  get  go.    

Page 19: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WEP  Working  

KEY  STORE   WEP  Key   IV  

RC4  CIPHER   KEYSTREAM  

DATA   ICV  

PAD   KID   CIPHERTEXT  IV  

WEP  ENCRYPTED  PACKET(MAC  FRAME)  

CRC  32  CHECKSUM  

XOR  ALGO.  

Page 20: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

 WEP  Weakness  

1.  Key  management  and  key  size  2.  24  bit  IV  size  is  less.  3.  The  ICV  algorithm  is  not  appropriate  4.  Use  of  RC4  algorithm  is  weak  5.  Authen.ca.on  messages  can  be  easily  forged  

Page 21: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Wep  Broken  beyond  repair  

Page 22: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WPA  (Wi-­‐Fi  Protected  Access)  •  Data  Encryp.on  for  WLAN  based  on  802.11  std.  •  Improved  Encryp.on  &  Authen.ca.on  Method.  •  Uses  TKIP  

–  Based  on  WEP  – Michael  algorithm  

•  Hardware  changes  not  required  •  Firmware  update    Types  1.  Personal        2.  Enterprise                      PSK        802.1x  +  RADIUS    

Page 23: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WPA  Working  Temporary    EncrypUon  key  

Transmit  Address  

T.S.C.  

KEY  MIXING  

WEP  SEED  

RC4  CIPHER   KEYSTREAM  

MAC  HEADER  

 IV   KID   EIV   CIPHER  TEXT  

MSDU  

MIC  KEY  MPDU   ICV  MICHAELS  

ALGORITHM   MSDU  +  MIC  KEY  

(  PACKET  TO  BE  TRANSMITTED  )  

Page 24: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WPA2  •  Long  Term  Solu.on  (802.11)  •  Stronger  Data  protec.on  &  Network  access  control  

•  Used  CCMP  –  Based  on  AES  

•  Hardware  changes  required  

   Types  1.  Personal  Pre  Shared  Key  2.  Enterprise  802.1x  +  RADIUS  

Page 25: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WPA2  Working  

Source:  EC  Council  

Page 26: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Source:  someecards  

Page 27: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Breaking  WPA/WPA2  

•  Dic.onary  Akacks(Not  so  successful,  but  yeah  some  .me…)  

•  Brute  Force(tools  like:  Kismac,  Aireplay  etc)  •  WPA  PSK    

Page 28: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 29: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Security  breaching  sequence  Find the network

Study its traffic  

Study Security mechanisms

 

ATTACK!!!!!!!! (i.e. Decrypt the

packets)

Page 30: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 31: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

BEFORE  ATTACK  

DOS

Page 32: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Access  point  is  busy  handling  akackers  request  

AFTER  ATTACK  

Page 33: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Man  In  The  Middle  Akack(MITM)  

•  Before  

Page 34: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Aler…    

Page 35: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

ARP  Poisoning/Spoofing  

Source:  h3p://securitymusings.com/wp-­‐content/uploads/2008/12/arp-­‐spoofing.png  

Page 36: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WiFi  JAMMING….  

Page 37: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

WiFi  JAMMING….  

Page 38: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Fake  Access  Points  

SSID:  XYZ  Bank    

Page 39: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))
Page 40: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Fake  Access  Points  

SSID:  XYZ  Bank    

Page 41: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

•  Basics  of  Wifi  •  Types  of  wireless  networks  •  Wireless  Standards(802.11  series)  •  Encryp.on  Algorithms  •  Wireless  hacking  methodology  •  ATTACKS(commonly  encountered)  •  Staying  secure(Defense)  •  Security  Tools  

Page 42: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Defense  against  WPA  /  WPA2  akacks  

•  Extremely  Complicated  keys  can  help  •  Passphrase  should  not  one  from  dic.onary,  so  use  uncommon-­‐senseless  words.  

•  Key  should  be  more  than  20  chars  with  combina.on  of  special  chars,  numbers,  alphabets.  Change  them  at  regular  intervals.  

Page 43: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

 #eY,t#!$c@/\/_B-­‐gUd0n3?@$sW0rD  

 

Page 44: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

1.  WPA  instead  of  WEP  2.  WPA2  Enterprise  implementa.on  3.  Place  AP  at  secured  loca.on.  4.  Centralized  authen.ca.on  &  Update  Drivers  

regularly.  5.  Changing  default  SSID  aler  Configuring  

WLAN  6.  Firewall  policies  &  Router  access  Password  

Security  Checkboxes  

Page 45: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

1.  MAC  add.  Filtering  2.  Encryp.on  at  Access  Point    3.  Packet  Filtering  between  AP  4.  Network  Strength  configura.on.  5.  Use  Ipsec’s  for  encryp.on  on  WLANS  6.  Check  out  for  Rogue  Access  Points  

Security  Checkboxes(contd…)  

Page 46: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Wi-­‐Fi  Security  Audi.ng  Tools  

•  AirMagnet  Wifi  Analyzer  •  AirDefense  •  Adap.ve  wireless  IPS  •  ARUBA  RF  Protect  WIPS  •  And  many  others…  

Page 47: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))
Page 48: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

Ques.ons?  

•  What  you  want  to  ask,  many  already  have  that  same  ques.on  on  their  mind.  Be  bold  and  lead  

•  OK,  if  you  don’t  want  to  speak  and  keep  shut  and  keep  thinking  about  it  in  your  mind  and  take  those  ques.ons  home,  make  sure  you  email  those  to  us  and  sleep  well  at  night!  

Page 49: HACKING & INFORMATION SECURITY Presentsfiles.meetup.com/7108012/Wifi Security - Attack and Defense.pdf · • Basics)of)Wifi) • Types)of)wireless)networks) • Wireless)Standards(802.11)series))

What  should  be  our  topic  for  the  next  meet?    I  hate  to  ask  but,  how  can  we  make  this  beker?    


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