Encrypted strings in software

Question

I am new to reverse engineering. I am using immunity debugger, x64 dbg, ollydbg. Softwares like Winzip we can't able to read it's strings because it is obfuscated (encrypted). I have watched some tutorials on YouTube, but those softwares ( power iso) strings were unencrypted. I need to know is there any way to deobfuscate (decrypt), it's strings to reverse engineer

Answer 1

Obfuscation should not be confused with Encryption, semantics aside, Encryption is strong protection against capable attackers, Obfuscation is not.

With regard to your question, the theoretical approach is:

1. Identify cryptographic primitive being employed
2. Identify mode of operation, cryptographic trap-door function
3. Execute best known attack on cipher-text