Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Glitching Ruby Script

Avatar for Urabe Shyouhei Urabe Shyouhei
September 19, 2017
Technology
2
820

Glitching Ruby Script

A #rubykaigi 2017 Lightning Talk

Avatar for Urabe Shyouhei

Urabe Shyouhei

September 19, 2017
Tweet

More Decks by Urabe Shyouhei

See All by Urabe Shyouhei
On sending methods
Avatar for Urabe Shyouhei shyouhei
0
670
The send-pop optimisation
Avatar for Urabe Shyouhei shyouhei
2
6.8k
Ruby 2.5 What's New
Avatar for Urabe Shyouhei shyouhei
0
1.2k
Being an Open Source Developer, at work
Avatar for Urabe Shyouhei shyouhei
11
6.7k
Optimizing Ruby
Avatar for Urabe Shyouhei shyouhei
7
2.5k
Ruby and its evaluation
Avatar for Urabe Shyouhei shyouhei
10
3k
Deeper look at RFC7159 the JSON
Avatar for Urabe Shyouhei shyouhei
4
1.7k
What's New in Ruby 2.0
Avatar for Urabe Shyouhei shyouhei
71
25k

Other Decks in Technology

See All in Technology
レガシーシステム刷新における TypeSpec スキーマ駆動開発のすゝめ
Avatar for karacoro / からころ tsukuha
0
160
AI駆動開発を実現するためのアーキテクチャと取り組み
Avatar for Yuichiro Yamashita baseballyama
13
7.6k
【M3】攻めのセキュリティの実践！プロアクティブなセキュリティ対策の実践事例
Avatar for mizu axelmizu
0
170
ZOZOTOWNカート決済リプレイス ── モジュラモノリスという過渡期戦略
Avatar for ZOZO Developers zozotech
PRO
0
490
レガシーで硬直したテーブル設計から変更容易で柔軟なテーブル設計にする
Avatar for Red Frasco red_frasco
4
430
Greenは本当にGreenか？ - B/GデプロイとAPI自動テストで安心デプロイ
Avatar for Kaz Watanabe kaz29
0
100
大規模プロダクトで実践するAI活用の仕組みづくり
Avatar for daiki k1tikurisu
5
1.7k
Post-AIコーディング時代のエンジニア生存戦略
Avatar for shinoyu shinoyu
0
300
持続可能なアクセシビリティ開発
Avatar for azukiazusa azukiazusa1
6
280
巨大モノリスのリプレイス──機能整理とハイブリッドアーキテクチャで挑んだ再構築戦略
Avatar for ZOZO Developers zozotech
PRO
0
210
Quarkusで作るInteractive Stream Application
Avatar for Tomohiro Hashidate joker1007
0
160
Tomcatが起動しない！？SecureRandomと乱数デバイスの罠​
Avatar for k.fujikawa8 fujikawa8
1
110

Featured

See All Featured
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
16
1.8k
Easily Structure & Communicate Ideas using Wireframe
Avatar for Afnizar Nur Ghifari afnizarnur
194
17k
10 Git Anti Patterns You Should be Aware of
Avatar for Lemi Orhan Ergin lemiorhan
PRO
658
61k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
Avatar for Joe Casabona jcasabona
34
2.5k
Bootstrapping a Software Product
Avatar for Garrett Dimon garrettdimon
PRO
307
110k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
Avatar for Tammy Everts tammyeverts
10
680
Fireside Chat
Avatar for paigeccino paigeccino
41
3.7k
Java REST API Framework Comparison - PWX 2021
Avatar for Matt Raible mraible
34
9k
Automating Front-end Workflow
Avatar for Addy Osmani addyosmani
1371
200k
Save Time (by Creating Custom Rails Generators)
Avatar for Garrett Dimon garrettdimon
PRO
32
1.8k
The Web Performance Landscape in 2024 [PerfNow 2024]
Avatar for Tammy Everts tammyeverts
11
940
The Invisible Side of Design
Avatar for Vitaly Friedman smashingmag
302
51k

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!