Websites like SerialShack or DamSen offers lists of serials. You will try 50 serials. None will work. Why? Because Adobe moved to online activation in CS5. You need to either:
For professionals, using pirated software can lead to: adobe illustrator cs5 for mac free download full version
Adobe Illustrator CS5 was never released as free software. It remains copyrighted material, and using "cracked" or "full version free" downloads is considered software piracy. Adobe’s Policy: Websites like SerialShack or DamSen offers lists of serials