When you purchase an IonCube-encoded script, the license agreement explicitly forbids reverse engineering, decompiling, or decoding. Breaking this clause voids your license, and the developer can pursue legal action.

If you are stuck with an encoded file and cannot decode it, you have better options than risking malware or legal action.

There is no universal IonCube decoder. Period. The IonCube team actively updates their encryption algorithms and anti-debugging techniques. When a vulnerability is found, they patch it within weeks. A tool that works on files encoded today will almost certainly fail on files encoded with the latest version.