However, you have the right to reverse-engineer software you own to make it interoperable or for legal repair, provided this does not violate local copyright laws or specific contracts. Conclusion
The simplest and most legal approach is to contact the original developer or company that provided the encoded files. Most commercial software vendors will provide source access to legitimate license holders, particularly if you have a valid support contract or can prove ownership. online ioncube decoder
They should offer a confidentiality agreement (NDA). However, you have the right to reverse-engineer software