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Attacking and Exploiting Modern Web Applications

You're reading from   Attacking and Exploiting Modern Web Applications Discover the mindset, techniques, and tools to perform modern web attacks and exploitation

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Product type Paperback
Published in Aug 2023
Publisher Packt
ISBN-13 9781801816298
Length 338 pages
Edition 1st Edition
Languages
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Authors (2):
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Simone Onofri Simone Onofri
Author Profile Icon Simone Onofri
Simone Onofri
Donato Onofri Donato Onofri
Author Profile Icon Donato Onofri
Donato Onofri
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Toc

Table of Contents (14) Chapters Close

Preface 1. Part 1: Attack Preparation
2. Chapter 1: Mindset and Methodologies FREE CHAPTER 3. Chapter 2: Toolset for Web Attacks and Exploitation 4. Part 2: Evergreen Attacks
5. Chapter 3: Attacking the Authentication Layer – a SAML Use Case 6. Chapter 4: Attacking Internet-Facing Web Applications – SQL Injection and Cross-Site Scripting (XSS) on WordPress 7. Chapter 5: Attacking IoT Devices – Command Injection and Path Traversal 8. Part 3: Novel Attacks
9. Chapter 6: Attacking Electron JavaScript Applications – from Cross-Site Scripting (XSS) to Remote Command Execution (RCE) 10. Chapter 7: Attacking Ethereum Smart Contracts – Reentrancy, Weak Sources of Randomness, and Business Logic 11. Chapter 8: Continuing the Journey of Vulnerability Discovery 12. Index 13. Other Books You May Enjoy

Attacking Ethereum Smart Contracts – Reentrancy, Weak Sources of Randomness, and Business Logic

“What Ethereum intends to provide is a blockchain with a built-in fully fledged Turing-complete programming language that can be used to create “contracts” that can be used to encode arbitrary state transition functions [...]. The code in Ethereum contracts is written in a low-level, stack-based bytecode language, referred to as “Ethereum virtual machine code” or “EVM code”. The code consists of a series of bytes, where each byte represents an operation.”

Vitalik Buterin [1]

Welcome to the seventh chapter of this book, where we’ll analyze our vulnerable application with a Capture the Flag (CTF) on Ethereum Smart Contracts.

The epigraph features words from Vitalik Buterin, who, in 2014, examined Bitcoin – the digital currency first introduced through a white paper in 2009 [2]. His analysis expanded the idea...

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