Introduction We are given a PE file: Click here to download it: Oscur.exe Initial Analysis Let’s start by analyzing the main function: There’s a bunch of puts and sleep calls that aren’t ver...

Introduction The Sublocku challenge shows how Sudoku validation works on the Ethereum blockchain. This challenge mixes blockchain development, storage handling, and puzzle-solving code. What makes...

Looking at the Contract Let’s check out this smart contract challenge. The contract uses Solidity version 0.8.26, which means it has built-in safety features that prevent overflows and handle erro...

Introduction The Insomni’hack 2025 challenge presented a unique problem centered around regex (regular expressions). The task was to identify specific characters and emojis from a given file that m...