You will need to clone the Brainflayer repository. Note that as Brainflayer was designed for Unix, you may encounter path issues.
The Definitive Guide to Running Brainflayer on Windows is a high-performance Bitcoin brainwallet cracker, originally designed by Ryan Castellucci to demonstrate the inherent insecurity of passwords used to generate private keys. While it was built natively for Linux to leverage massive Unix-based speeds, the demand for a Windows implementation has grown among security researchers and enthusiasts. brainflayer windows