PinnedReversing and debugging EVM Smart contracts: First steps in assembly (part 1)▶ 0. Introduction In this series of tutorials, we will learn how to debug and reverse EVM (Ethereum Virtual Machine) smart contracts. You may already know that, when a smart contract is not verified in a blockchain, you CANNOT read it’s solidity code, only the byte-code is displayed. The issue is that it’s…Solidity15 min readSolidity15 min read
May 15Practice Smart contract hacking. (now)To learn hacking and securing smart contract, you need to practice. But unfortunately, there are a sheer number of resources in the web to learn and master the field of web3 security. That’s why I’ve created a website which will help you practice smart contract hacking through multiple challenges. Here…Smart Contract2 min readSmart Contract2 min read
Apr 8Hacking an Ethereum Node (really)What (really) happen when you’re sending the transaction bellow with metamask? (Okay, this transaction is from before the London fork, but that doesn’t matter here.) { "from": "0x8900987a0654d979bB7cD8aaADd19Cf032B51D2e", "to": "0xAaBbCcDdEeFf00112233", "value": "2500000000000000000", "gas": 21000, "gasPrice": "50000000000", "nonce": 5 } This transaction is submitted to the blockchain right? Yes, maybe but…Ethereum5 min readEthereum5 min read
Jan 16IS CRYPTO really DYING ?The majority of people criticizing crypto lack basic knowledge crypto. They are: Repeating thoughtlessly opinion of journalists (or others “experts”) and/or reacting emotionally to the recent events. In this article, I’ll share my opinion about the crypto space by going through the different critics. As I have a web2 background…Crypto6 min readCrypto6 min read
Jan 1Is HACKING good for BLOCKCHAIN ?There isn’t any day when you don’t hear about a new 100s Millions $ hack happening on the blockchain space. Although when it happens, thousands of people loose a chunk of their saving and protocols (or crypto as whole) loose part of their trust. There are still some positive aspects…Blockchain4 min readBlockchain4 min read
Dec 29, 2022Basics of MEV in WEB3 securityHello, It’s been a bit moth than a month I’ve not written any articles about blockchain and security. Don’t worry, I work on a new crypto project, so I lack the time to write articles. In this article, we will skim through the MEV on the blockchain. Why I’m talking…Web3 Security4 min readWeb3 Security4 min read
Nov 26, 2022WEB3 security, is actually VERY EASY to LEARN.In this article, I will explain you why web3 security is actually very easy to learn by comparing it with website security (web2) and pointing out the main differences. What are the main differences between web2 and web3 security? Should you learn web2 or web3 security? …Blockchain5 min readBlockchain5 min read
Nov 6, 2022CREATE a CONTRACT with 2 SAME addresses on 2 DIFFERENT chainsDid you know that it was possible to create 2 smart contract on different blockchains with the same address? In this article we will see how it’s possible and how to do that. 2 different ways of creating a smart contract. To understand how it’s possible you need to know how addresses are calculated when you deploy a…Solidit3 min readSolidit3 min read
Oct 25, 2022FULL Smart contract audit Methodology [2023]In this article, I’ll show you the different steps in how to audit a smart contract. Contrary to beliefs, auditing smart contracts is not that hard. (not harder than auditing simple web2 websites) This is due to the fact that solidity is very easy to learn and is very limited…Blockchain3 min readBlockchain3 min read
Oct 7, 2022Is Ethereum centralized ? (The lifecycle of a transaction)There are a lot of regulations going on these times… Maybe you think that: “My ETH is safe, it can’t be frozen” “No one can prevent me from sending a transaction” “No one can steal my ETH, unless they have my private key” But are these statements true ? Is…Ethereum6 min readEthereum6 min read
