What are Decompilers?
Decompilers in the web3 space are tools that translate compiled smart contract bytecode back into a higher-level, human-readable form. These tools help developers, auditors, and security researchers understand the logic and structure of deployed contracts when source code is unavailable or incomplete. Typical services in this category include bytecode analyzers, Solidity or Vyper decompilers, and reverse engineering utilities tailored for Ethereum Virtual Machine (EVM) and other blockchain environments. The primary use cases involve contract auditing, vulnerability assessment, forensic analysis, and verifying contract behavior against expected functionality. Key characteristics of decompilers include accuracy in reconstructing control flow, readability of output code, and support for multiple blockchain virtual machines. While related to debugging and monitoring tools, decompilers focus specifically on code reconstruction rather than runtime behavior. Developers should seek decompiler tools when they need to inspect or verify smart contracts without access to original source code or when performing security reviews on third-party contracts.