Singularity of Origin is a robust and easy-to-use tool to perform DNS rebinding attacks. It consists of a DNS and a web server, a web interface to configure and launch an attack, and sample attack payloads.
We plan to support this tool and continue to add features and payloads. Singularity is open source and is available for download on the NCC Group GitHub repository: https://github.com/nccgroup/singularity
For more information about Singulatiry of Origin, read the blog from Gerald Doussot and Roger Meyer.