This explanation assumes prior knowledge of the smart contracts in this challenge and will focus exclusively on the vulnerability analysis. There’s a contract that incentivizes users to deploy Safe…

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The post discusses a vulnerability in the Wallet Mining challenge related to the AuthorizerUpgradeable contract's upgrade mechanism. It allows re-initialization of proxy contracts, posing a security risk. The attacker can exploit this flaw using CREATE2 address calculation to deploy Safe wallets to targeted addresses holding tokens. The solution involves a detailed step-by-step attack, including re-initializing the contract and executing transactions to recover tokens. Prevention mechanisms, such as proper initialization controls, are highlighted.

Damn Vulnerable DeFi V4 Solutions — #13. Wallet Mining