Damn Vulnerable DeFi Challenge #1 Solution — Unstoppable

Challenge #1 — Unstoppable

There’s a lending pool with a million DVT tokens in balance, offering flash loans for free.
If only there was a way to attack and stop the pool from offering flash loans …You start with 100 DVT tokens in balance.

The attacker end goal

Study the contracts

Contracts can behave erroneously when they strictly assume a specific Ether balance. It is always possible to forcibly send ether to a contract (without triggering its fallback function), using selfdestruct, or by mining to the account. In the worst case scenario this could lead to DOS conditions that might render the contract unusable.

Solution code




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