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
840

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
680
The send-pop optimisation
Avatar for Urabe Shyouhei shyouhei
2
6.9k
Ruby 2.5 What's New
Avatar for Urabe Shyouhei shyouhei
0
1.3k
Being an Open Source Developer, at work
Avatar for Urabe Shyouhei shyouhei
11
6.8k
Optimizing Ruby
Avatar for Urabe Shyouhei shyouhei
7
2.6k
Ruby and its evaluation
Avatar for Urabe Shyouhei shyouhei
10
3.1k
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
仕様書駆動AI開発の実践： Issue→Skill→PRテンプレで 再現性を作る
Avatar for 西岡 賢一郎 (Kenichiro Nishioka) knishioka
2
640
データ民主化のための LLM 活用状況と課題紹介（IVRy の場合）
Avatar for 和田 悠佑 wxyzzz
2
700
Digitization部 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
1
6.8k
Amazon Bedrock Knowledge Basesチャンキング解説！
Avatar for 野口碧生 aoinoguchi
0
130
30万人の同時アクセスに耐えたい！新サービスの盤石なリリースを支える負荷試験 / SRE Kaigi 2026
Avatar for GENDA genda
4
1.2k
広告の効果検証を題材にした因果推論の精度検証について
Avatar for ZOZO Developers zozotech
PRO
0
160
外部キー制約の知っておいて欲しいこと - RDBMSを正しく使うために必要なこと / FOREIGN KEY Night
Avatar for soudai sone soudai
PRO
12
5.3k
Data Hubグループ 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
0
2.7k
レガシー共有バッチ基盤への挑戦 - SREドリブンなリアーキテクチャリングの取り組み
Avatar for Konishi tatsuhiro tatsukoni
0
210
2026年、サーバーレスの現在地 -「制約と戦う技術」から「当たり前の実行基盤」へ- /serverless2026
Avatar for Serverless Operations slsops
2
240
ブロックテーマでサイトをリニューアルした話 / 2026-01-31 Kansai WordPress Meetup
Avatar for Toro_Unit (Hiroshi Urabe) torounit
0
460
AzureでのIaC - Bicep? Terraform? それ早く言ってよ会議
Avatar for Toru Makabe torumakabe
1
520

Featured

See All Featured
sira's awesome portfolio website redesign presentation
Avatar for ElsiraPls elsirapls
0
150
Art, The Web, and Tiny UX
Avatar for Lynn Fisher lynnandtonic
304
21k
Organizational Design Perspectives: An Ontology of Organizational Design Elements
Avatar for Dr. Kim W Petersen kimpetersen
PRO
1
190
Digital Projects Gone Horribly Wrong (And the UX Pros Who Still Save the Day) - Dean Schuster
Avatar for UX Y'all uxyall
0
340
Skip the Path - Find Your Career Trail
Avatar for Mark Kilby mkilby
0
54
Let's Do A Bunch of Simple Stuff to Make Websites Faster
Avatar for Chris Coyier chriscoyier
508
140k
Making Projects Easy
Avatar for Brett Harned brettharned
120
6.6k
How to Talk to Developers About Accessibility
Avatar for Jason CranfordTeague jct
2
130
How STYLIGHT went responsive
Avatar for nonsquared nonsquared
100
6k
Helping Users Find Their Own Way: Creating Modern Search Experiences
Avatar for Dan Newman danielanewman
31
3.1k
BBQ
Avatar for Matthew Crist matthewcrist
89
10k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
Avatar for soudai sone soudai
PRO
196
71k

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!