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Glitching Ruby Script

Urabe Shyouhei
September 19, 2017
Technology
2
760

Glitching Ruby Script

A #rubykaigi 2017 Lightning Talk

Urabe Shyouhei

September 19, 2017
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Transcript

  1. Glitching Ruby Script using American Fuzzy Lop @shyouhei

  2. None

  3. In short, AFL is a tool to glitch something.

  4. Why not use it to glitch our ruby script.

  5. Steps:

  6. 1: patch ruby.

  7. None

  8. OK That was too difficult.

  9. Steps revised:

  10. 1: docker pull.

  11. That’s all ;)

  12. None
  13. None

  14. Outputs

  15. None

  16. *OQVU (MJUDIFE

  17. *OQVU (MJUDIFE

  18. *OQVU (MJUDIFE

  19. N o w , R u b y comes with

    many tests.

  20. What if we glitch those tests?

  21. None
  22. None
  23. None
  24. None
  25. None
  26. None
  27. None

  28. It’s fun that AFL automatically finds bugs.

  29. Let AFL work for you today!