題目
Mr Robot CTF
通關條件
Can you root this Mr. Robot styled machine? This is a virtual machine meant for beginners/intermediate users. There are 3 hidden keys located on the machine, can you find them?
提示
key 1
Robots
題目
Dex Two
通關條件
This level will ask you to break DexTwo, a subtlely modified Dex contract from the previous level, in a different way.
You need to drain all balances of token1 and token2 from the DexTwo contract to succeed in this level.
You will still start with 10 tokens of token1 and 10 of token2. The DEX contract still starts with 100 of each token.
提示
How has the swap method been modified?
題目
Dex
通關條件
The goal of this level is for you to hack the basic DEX contract below and steal the funds by price manipulation.
You will start with 10 tokens of token1 and 10 of token2. The DEX contract starts with 100 of each token.
You will be successful in this level if you manage to drain all of at least 1 of the 2 tokens from the contract, and allow the contract to report a "bad" price of the assets.
題目
Gatekeeper One
通關條件
跨越守衛的守衛並且註冊成為參賽者吧
提示
回憶一下你在 Telephone 和 Token 關卡學到了什麼
可以去翻翻 Solidity 文件,更深入的了解一下 gasleft() 函式的資訊(參見 Units and Global Variables 和 External Function Calls)