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The Metana Blog
Guides, tutorials & career tips.
Expert-written guides on Full-Stack Development, Web3, AI, Data, and Cybersecurity — built for aspiring engineers and tech professionals ready to level up.
Ethernaut WalkthroughEthernaut Level 10 Walkthrough: Re-entrancy
Understanding re-entrancy is crucial for anyone developing or auditing Ethereum smart contracts. Failure to properly handle re-entrant calls can result in the loss of funds or the manipulation of contract state by malici
Georgi PlamenovJune 7, 2024Read
Ethernaut WalkthroughEthernaut Level 9 Walkthrough: King
In this challenge, we’ll dive into smart contracts’ payment vulnerability and essential security practices to prevent such issues. By the end of ethernaut level 9, you’ll be equipped to both exploit and safeguard the sma
Vinh TranMay 20, 2024Read
Ethernaut WalkthroughEthernaut Level 8 Walkthrough: Vault
Ethernaut challenges, akin to a hacking Capture The Flag (CTF) for Web3 enthusiasts, provide an immersive platform to explore Ethereum and Solidity programming. Each challenge presents a unique smart contract puzzle, tes
Rupam RoychoudhuryMay 19, 2024Read
Ethernaut WalkthroughEthernaut Level 7 Walkthrough: Force
Being relatively new to the Web3 space and having a keen interest in Security has naturally led to me participating the Ethernaut Challenge hosted by OpenZeppelin. For those unfamiliar with these challenges, each challen
Jarrod PyneMay 8, 2024Read
Ethernaut WalkthroughEthernaut Level 6 Walkthrough: Delegation
In this level, we will familiarize ourselves with delegatecall and fallback. This serves as a preliminary step towards understanding more advanced concepts, like the proxy pattern.This article will clarify delegatecall a
Vinh TranMay 3, 2024Read
Ethernaut WalkthroughEthernaut Level 5 Walkthrough: Token
Hello Everyone! My name is Shiran Sukumar, I am a student at Metana. I wanted to share with you all a walkthrough on how to approach and solve an Ethernaut challenge. Ethernaut is a fantastic learning resource for Solidi
Shiran SukumarMay 3, 2024Read
Ethernaut WalkthroughEthernaut Level 4 Walkthrough: Telephone
This Web3/Solidity-based wargame is akin to a hacking Capture The Flag (CTF) challenge, where each level presents a smart contract puzzle waiting to be ‘hacked’. It’s an immersive and interactive way to learn about Ether
Sven DaneelMay 1, 2024Read
Ethernaut WalkthroughEthernaut Level 3 Walkthrough: Coin Flip
The Ethernaut Level 3, called “Coin Flip,” is a lesson on the weak spots in how smart contracts handle chance and prediction. This article walks you through the Coin Flip game, showing where the contract has a weak spot
Sven DaneelApril 2, 2024Read
Ethernaut WalkthroughEthernaut Level 2 Walkthrough: Fallout
The Ethernaut Level 2 offers a fascinating glimpse into the vulnerabilities that can arise from seemingly minor oversights in smart contract development. This article takes you through the challenge, revealing the misste
Marko JaureguiMarch 21, 2024Read
Ethernaut WalkthroughEthernaut Level 1 Walkthrough: Fallback
This Web3/Solidity-based wargame is akin to a hacking Capture The Flag (CTF) challenge, where each level presents a smart contract puzzle waiting to be ‘hacked’. It’s an immersive and interactive way to learn about Ether
Sven DaneelFebruary 20, 2024Read
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