EvoMaster

EvoMaster is one of the oldest (2016) Web API fuzzer that is still actively maintained (see its GitHub repository).

This is not a re-write of EvoMaster from Kotlin into Python, but rather a wrapper distributed via PyPi. As a CLI application, PyPi gives to EvoMaster a better user experience compared to the cumbersome ways of distributing JDK programs.

Via PyPi, EvoMaster can be installed using:

pip install evomaster

or using pip3 if on a Mac. Once the wrapper is installed, it can be executed on the command line with:

evomaster <args>

For a list of available args options, see documentation on its GitHub repository.

One the first run, evomaster will do:

1. download the latest evomaster.jar release from the GitHub EvoMaster' release page.
2. download a suitable JDK for the host OS and architecture (e.g., Amazon Corretto).

These files are downloaded under ~/.evomaster folder. Those files take a few hundreds MBs in space.

WARNING: executing pip uninstall evomaster unfortunately does not delete the content of ~/.evomaster. You will need to delete it manually.

When evomaster Python script is executed, it simply calls something like:

~/.evomaster/jdk/bin/java -jar ~/.evomaster/evomaster/<version>/evomaster.jar <args>

To upgrade to latest release, use:

pip install --upgrade evomaster

If you are using a Mac, some users found calling pip install directly to be unreliable, and recommend should rather use:

python3 -m pip install --upgrade evomaster