Adobe Flash CS6 is proprietary software. Using a portable, cracked version violates Adobe’s End User License Agreement (EULA). While the software is legacy, the copyright remains active. Using unauthorized versions deprives developers of compensation and leaves the user with no technical support or legal recourse if something goes wrong.
A "portable" version of Adobe Flash CS6 is a non-standard, unofficial package designed to run without a traditional installation. While it may seem convenient for legacy projects, it carries significant legal and security baggage.
Today, despite Flash Player being officially dead, there is still a lingering demand for the tools that built the era. A specific search term continues to pop up in forums and search engines: