mythril

What it is and what it does

Mythril is a static analysis tool that examines EVM bytecode—the compiled form of smart contracts—to find security flaws before deployment. It works by simulating contract execution paths symbolically and using constraint solvers to detect vulnerabilities like unprotected self-destruct, reentrancy, and other known attack vectors. The tool supports Ethereum and other EVM-compatible blockchains (Hedera, Quorum, Vechain, Roostock, Tron).

It's designed as a command-line utility: you point it at a Solidity file or a deployed contract address, specify how many transaction sequences to explore, and it reports findings with severity levels, affected functions, and remediation guidance. The tool is part of the ConsenSys security ecosystem and feeds into the MythX platform, though Mythril itself is the open-source foundation for bytecode-level analysis.

Use it for:

• Audit a Solidity smart contract before mainnet deployment to catch high-severity vulnerabilities.
• Analyze deployed contract bytecode on-chain to verify security properties without source code access.
• Integrate into CI/CD pipelines to automatically flag security issues during contract development.
• Research EVM bytecode patterns and vulnerability detection techniques using symbolic execution.
• Verify remediation of known vulnerabilities by re-analyzing after code changes.

Worth the install?

AI-flagged interpretation of the facts on this page — verify before relying

Mythril analyzes EVM bytecode for security vulnerabilities in smart contracts using symbolic execution, SMT solving, and taint analysis.

Yes, with conditions. Mythril is actively maintained and has no known vulnerabilities. Install it if you develop or audit Ethereum smart contracts and need bytecode-level security analysis. The high install friction and alpha status mean you should expect setup complexity and test it in a controlled environment first. For production audits, consider whether MythX's optimized tools better suit your workflow.

Install

mythril on PyPI

pip install mythril

uv add mythril

poetry add mythril

Installing mythril

Before you install

Installation carries high friction: the package has no runtime dependencies listed but requires compiled components or system libraries (evidenced by the tar.gz distribution). The project is actively maintained with recent commits and a solid community presence (4259 stars), but setup complexity may require Docker or careful environment configuration.

License in practice

MIT license is permissive and poses no restrictions on use, modification, or distribution in your own projects.

Quickstart

pip install mythril
myth analyze <solidity-file>
# or analyze from blockchain:
myth analyze -a <contract-address> -t 3

Requires Python 3.7 or later; high install friction suggests Docker (mythril/myth) may be the simpler deployment path than pip on some systems.

Verify before relying

• Whether the package's compiled dependencies are available pre-built for all major platforms or require local compilation.
• Current state of SMT solver integration and whether Z3 or other solvers must be installed separately.
• Performance characteristics and typical analysis time for production-scale contracts.

Package facts

Evidence: mythril-0.24.8.tar.gz

Keywords: hacking, disassembler, security, ethereum

Tags

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Further reading