ReEntrancy Exercise 1

Intro

In the following exercise, you will have to hack a Bank dApp and steal all the deposited money. The bank is implemented using the code in the smart contract EtherBank.sol.

Accounts

• 0 - Deployer & Owner
• 1 - User 1
• 2 - User 2
• 3 - User 3
• 4 - User 4
• 5 - Attacker (You)

Tasks

Task 1

Steal all the ETH that is stored in the bank smart contract (of ALL the accounts). Send the stolen ETH to your attacker's account.

Task 2

Protect the EtherBank.sol smart contract so your attack wouldn't succeed.

Task 3

Find two additional ways to protect the smart contract.