Slither, the Solidity source analyzer
Slither is a Solidity static analysis framework written in Python 3. It runs a suite of vulnerability detectors, prints visual information about contract details, and provides an API to easily write custom analyses. Slither enables developers to find vulnerabilities, enhance their code comprehension, and quickly prototype custom analyses.
- Detects vulnerable Solidity code with low false positives
- Identifies where the error condition occurs in the source code
- Easily integrates into continuous integration and Truffle builds
- Built-in ‘printers’ quickly report crucial contract information
- Detector API to write custom analyses in Python
- Ability to analyze contracts written with Solidity >= 0.4
- Intermediate representation (SlithIR) enables simple, high-precision analyses
- Correctly parses 99.9% of all public Solidity code
- Average execution time of less than 1 second per contract
Run Slither on a Truffle/Embark/Dapp/Etherlime application:
Run Slither on a single file:
$ slither tests/uninitialized.sol
For additional configuration, see the usage documentation.
Use solc-select if your contracts require older versions of solc.
By default, all the detectors are run.
Contact us to get access to additional detectors.
To run a printer, use
|1||Export the call-graph of the contracts to a dot file|
|2||Export the CFG of each functions|
|3||Print a summary of the contracts|
|4||Print the data dependencies of the variables|
|5||Print the keccack256 signature of the functions|
|6||Print a summary of the functions|
|7||Print a human-readable summary of the contracts|
|8||Print the inheritance relations between contracts|
|9||Export the inheritance graph of each contract to a dot file|
|10||Print the modifiers called by each function|
|11||Print the require and assert calls of each function|
|12||Print the slithIR representation of the functions|
|13||Print the slithIR representation of the functions|
|14||Print the storage order of the state variables|
|15||Print the state variables written and the authorization of the functions|
How to install
Slither requires Python 3.6+ and solc, the Solidity compiler.
$ pip install slither-analyzer
$ git clone https://github.com/crytic/slither.git && cd slither $ python setup.py install
We recommend using an Python virtual environment, as detailed in the Developer Installation Instructions, if you prefer to install Slither via git.
eth-security-toolbox docker image. It includes all of our security tools and every major version of Solidity in a single image.
/home/share will be mounted to
/share in the container. Use
solc-select to switch the Solidity version.
docker pull trailofbits/eth-security-toolbox
To share a directory in the container:
docker run -it -v /home/share:/share trailofbits/eth-security-toolbox
Feel free to stop by our Slack channel (#ethereum) for help using or extending Slither.
- The Printer documentation describes the information Slither is capable of visualizing for each contract.
- The Detector documentation describes how to write a new vulnerability analyses.
- The API documentation describes the methods and objects available for custom analyses.
- The SlithIR documentation describes the SlithIR intermediate representation.
Slither is licensed and distributed under the AGPLv3 license. Contact us if you’re looking for an exception to the terms.