1. How to build Big Brother
With blackjack and h--kers
Yunusov Timur,
Senior expert, Head of dept

2. How to build Big Brother
With blackjack and h--kers
With 3G modems and hackers
Yunusov Timur,
Senior expert, Head of dept

3. How to build Big Brother
When/Who/Where/And why???
• 2014-2015

4. How to build Big Brother
When/Who/Where/And why???
• 2014-2015
• «root via SMS» SCADA Strange Love
https://youtu.be/T9AFFIVpCa8
• Russia and the whole world

5. How to build Big Brother
When/Who/Where/And why???
• 2014-2015
• «root via SMS» SCADA Strange Love
https://youtu.be/T9AFFIVpCa8
• Russia and the whole world
• Cause nobody cares(((

6. How to build Big Brother
Boring numbers

7. How to build Big Brother
Boring numbers
• >10 (8 diff) 3G/4G modems/routers
• 75% vulns to RCE/fw modification
• 60% RCE are 0days

8. How to build Big Brother
Boring numbers
• ~60 000 devices/1M/Telco
• 5000 devices/1W/SecurityLab
• 100% vulns to RCE/fw modification

9. How to build Big Brother
How?

10. How to build Big Brother
How?
+

11. How to build Big Brother
How?
1. Identification
2. Code injection
3. Data interception
4. SIM cloning / GSM Attacks
5. Host Infection
6. APT
7. Return to 1.

12. How to build Big Brother
Identification

13. How to build Big Brother
Identification
• WHOIS?

14. How to build Big Brother
Identification
<img src="http://192.168.0.1/img/1.png"
style="height:0;width:0;" onload="set('1')">
<img src="http://192.168.0.1/img/2.jpg"
style="height:0;width:0;" onload="set('2')">
<img src="http://hostname/img/3.png"
style="height:0;width:0;" onload="set('3')">
<img src="http://127.0.0.1:5000/request"
style="height:0;width:0;" onload="set('4')">

15. How to build Big Brother
Identification
• GeoIP?

16. How to build Big Brother
Code Injection
• Public exploits + old FW
• Blackbox
• FW Access + FW RE + IDA
• FW modification + Arbitrary upload

17. How to build Big Brother
Code Injection
• Public exploits + old FW

18. How to build Big Brother
Code Injection
• Blackbox
• ?action=ping||shutdown –r 0||
• ?date=;ping blahblah.com;

19. How to build Big Brother
Code Injection
• Blackbox

20. How to build Big Brother
Code Injection
• FW Access + FW RE + IDA
• Greetings:
• Kirill Nesterov,
• Dmitry Sklyarov

21. How to build Big Brother
Code Injection
• FW modification + Arbitrary upload

22. How to build Big Brother
Code Injection
• FW modification + Arbitrary upload
• Integrity attacks

23. How to build Big Brother
Code Injection
• FW modification + Arbitrary upload
• Integrity attacks
• Remote upload (CSRF/XSS)

24. How to build Big Brother
Code Injection
• FW modification + Arbitrary upload
• Integrity attacks
• Remote upload (CSRF/XSS)
• Local upload (diag mode)

25. How to build Big Brother
Code Injection
• FW modification + Arbitrary upload
• Integrity attacks

26. How to build Big Brother
FW Integrity Control
• FW encrypted via RC4
• RSA Digital Signature +SHA1

27. How to build Big Brother
FW Integrity Control

28. How to build Big Brother
FW Integrity Control
• FW encrypted via RC4

29. How to build Big Brother
FW Integrity Control
• FW encrypted via RC4
• Constant keystream FAIL
• Part1 XOR Part2 FAIL
• FW1 XOR FW2 FAIL
• Lot of plaintext (CDROM) FAIL

30. How to build Big Brother
FW Integrity Control
• FW encrypted via RC4 FAIL

31. How to build Big Brother
FW Integrity Control
• RSA Digital Signature +SHA1
• AR: !<arch>:
• FW
• pkginfo: <7742526>
• Sign=RSA(SHA1(FW[0..7742526]))

32. How to build Big Brother
FW Integrity Control
• RSA Digital Signature +SHA1

33. How to build Big Brother
FW Integrity Control
• RSA Digital Signature +SHA1
• ar --add data.tar.gz
• ar -v
• data.tar.gz
• sign
• pkginfo
• data.tar.gz

34. How to build Big Brother
FW Integrity Control
• RSA Digital Signature +SHA1 FAIL
• ar --add data.tar.gz
• ar -v
• data.tar.gz
• sign
• pkginfo
• data.tar.gz

35. How to build Big Brother
FW upload/CSRF
http://blog.kotowicz.net/2011/04/
how-to-upload-arbitrary-file-contents.html

36. How to build Big Brother
FW upload/ XSS
• HUAWEI PSIRT 436642 (2015-05-29)
http://www1.huawei.com/en/security/psirt/security-
bulletins/security-notices/archive/hw-436642.htm

37. How to build Big Brother
Data interception
• Cell ID
• WiFi
• SMS
• HTTP
• SSL

38. How to build Big Brother
Data interception
• Cell ID
• http://opencellid.org/ + XSS

39. How to build Big Brother
Data interception
• WiFi

40. How to build Big Brother
Data interception
• SMS

41. How to build Big Brother
Data interception
• HTTP
• ARP-spoofing
• DNS-spoofing

42. How to build Big Brother
Data interception
• SSL
• Host RCE

43. How to build Big Brother
SIM Cloning
• Fake BTS + Binary SMS
• GEO(!)
• IMSI
https://media.blackhat.com/us-13/us-13-Nohl-Rooting-
SIM-cards-Slides.pdf

44. How to build Big Brother
SIM Cloning
• Use The Force

45. How to build Big Brother
SIM Cloning
• Diag mode

46. How to build Big Brother
SIM Cloning
• Send AT commands
• AT+CMGF=0

47. How to build Big Brother
GSM Attacks
• Huawei: Remote(!) osmocomm for beggars
• VxWorks on baseband hi6920
― Loaded by Linux
― Packed on flash
― dmesg => load vxworks ok, entey 0x50d10000
― Cshell
• OS communication
• Builtin debuger
― Nearly all names of objects/functions
― POSIX + documentation

48. How to build Big Brother
Host Infection
• BadUSB
• Fake diagnostic tools/CDROM
• HTML Injection + 0day
• Even real diagnostic tools =))

49. How to build Big Brother
Host Infection
• BadUSB
• Android gadget driver
(supported_functions patching)
• HID Gadget onboard!
• Lots of boring stuff

50. How to build Big Brother
Host Infection
• Drive By Download
• CDROM

51. How to build Big Brother
Host Infection
• HTML Injection + 0day

52. How to build Big Brother
Host Infection
• Kudos to @cyberpunkych
• Lots of other stuff at yota.hlsec.ru
• But nobody cares(((

53. How to build Big Brother
APT

54. How to build Big Brother
APT

55. How to build Big Brother
APT
• Subscribers attacks Subscribers
• LISTEN 0.0.0.0:80
• Firewalls

56. How to build Big Brother
Boring numbers

57. How to build Big Brother
Fun numbers
• Remote Code Execution via WEB: 5 dev
• Arbitrary FW modification (rem/loc): 6 dev
• CSRF: 5 dev
• XSS: 4 dev

58. How to build Big Brother
DEMO

59. How to build Big Brother
Kudos
• @cyberpunkych
• D. Sklyarov
• K. Nesterov
• Al. Osipov
• @SCADASL

60. Stay secure!
Questions?