What is the ruling on using Photoshop 8, which is not available on the company's website, and what is the ruling on using its crack or serial key?

It is not permissible to break the protection of programs secured by their owners if they have not granted permission for copying, regardless of whether the owner is a Muslim or a non-belligerent disbeliever. This is based on the general implications of the Prophet’s (peace be upon him) saying: "Muslims are bound by their conditions," and his saying: "The wealth of a Muslim person is not lawful unless given with his willing consent," and his saying: "Whoever takes precedence to something permissible has a greater right to it."