Denial Of Service Exercise 1

Intro

The TokenSale.sol is an ICO smart contract, users can invest in the token by sending ETH to the contract, once the sale is over, the admin calls the distributeTokens() function and the investors will get the token. 1 ETH = 5 Tokens. You goal is to break the contract so investors will never be able to get their tokens.

Accounts

• 0 - Deployer & Owner
• 1 - User1
• 2 - User2
• 3 - User3
• 4 - Attacker (You)

Tasks

Task 1

Break the TokenSale.sol so investors won't be able to receive their tokens.

Pro Tip: You can use the timeout() function to extend the timeout of Hardhat Tests. Example: it('Exploit', async function () {}).timeout(100000000)