Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Glitching Ruby Script
Search
Urabe Shyouhei
September 19, 2017
Technology
2
810
Glitching Ruby Script
A #rubykaigi 2017 Lightning Talk
Urabe Shyouhei
September 19, 2017
Tweet
Share
More Decks by Urabe Shyouhei
See All by Urabe Shyouhei
On sending methods
shyouhei
0
660
The send-pop optimisation
shyouhei
2
6.8k
Ruby 2.5 What's New
shyouhei
0
1.2k
Being an Open Source Developer, at work
shyouhei
11
6.7k
Optimizing Ruby
shyouhei
7
2.5k
Ruby and its evaluation
shyouhei
10
3k
Deeper look at RFC7159 the JSON
shyouhei
4
1.7k
What's New in Ruby 2.0
shyouhei
71
25k
Other Decks in Technology
See All in Technology
SREとソフトウェア開発者の合同チームはどのようにS3のコストを削減したか?
muziyoshiz
1
100
Goに育てられ開発者向けセキュリティ事業を立ち上げた僕が今向き合う、AI × セキュリティの最前線 / Go Conference 2025
flatt_security
0
350
KAGのLT会 #8 - 東京リージョンでGAしたAmazon Q in QuickSightを使って、報告用の資料を作ってみた
0air
0
200
Why React!?? Next.jsそしてReactを改めてイチから選ぶ
ypresto
10
4.4k
SOC2取得の全体像
shonansurvivors
1
370
KMP の Swift export
kokihirokawa
0
330
How to achieve interoperable digital identity across Asian countries
fujie
0
110
Oracle Base Database Service 技術詳細
oracle4engineer
PRO
11
77k
それでも私はContextに値を詰めたい | Go Conference 2025 / go conference 2025 fill context
budougumi0617
4
1.2k
extension 現場で使えるXcodeショートカット一覧
ktombow
0
210
Pythonによる契約プログラミング入門 / PyCon JP 2025
7pairs
5
2.5k
LLMアプリケーション開発におけるセキュリティリスクと対策 / LLM Application Security
flatt_security
7
1.8k
Featured
See All Featured
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Unsuck your backbone
ammeep
671
58k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
Testing 201, or: Great Expectations
jmmastey
45
7.7k
Side Projects
sachag
455
43k
The Language of Interfaces
destraynor
162
25k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
BBQ
matthewcrist
89
9.8k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
46
7.6k
Building Better People: How to give real-time feedback that sticks.
wjessup
368
20k
Transcript
Glitching Ruby Script using American Fuzzy Lop @shyouhei
None
In short, AFL is a tool to glitch something.
Why not use it to glitch our ruby script.
Steps:
1: patch ruby.
None
OK That was too difficult.
Steps revised:
1: docker pull.
That’s all ;)
None
None
Outputs
None
*OQVU (MJUDIFE
*OQVU (MJUDIFE
*OQVU (MJUDIFE
N o w , R u b y comes with
many tests.
What if we glitch those tests?
None
None
None
None
None
None
None
It’s fun that AFL automatically finds bugs.
Let AFL work for you today!