This is a piece of software that tries to login to Magento administrative panels using a list of websites, logins, and passwords. Written in C++.
You can download it from the following link: https://packetstormsecurity.com/files/download/139834/magentobruteforce.tar.gz
Source: https://packetstormsecurity.com/files/139834/Magento-Bruteforcer.html