[Doom] Looking for a way to find encryption key

[adol365]

Hi, is there a way to retrieve encryption "key" from exe file?
Here is the exe file. https://drive.google.com/file/d/0B8JGJb ... sp=sharing
And here is the encrypted lang files. https://drive.google.com/file/d/0B8JGJb ... sp=sharing

It seems that exe file contains encryption "key" for lang files.

[Sir Kane]

Open the exe in disassembler then look for references the the debug/log strings.

[adol365]

Open the exe in disassembler then look for references the the debug/log strings.

Uhm.. Ollydbg can't load 64-bit exe file.

[atom0s]

Removed.

[adol365]

http://x64dbg.com/#start

Thank you.

[Ekey]

Unfortunately, encryption key is dynamic.

[adol365]

Unfortunately, encryption key is dynamic.

Oh my god.. Though the result is bad news, thanks for your research.
Hmm.. I have one question. Would the game read decrypted text which is extracted from dump file?
I mean extract text from dump file and rearrange it to original script form and replace it to encrytped game script.

Here is dump text section from Doom demo version(free).
https://drive.google.com/file/d/0B8JGJb ... sp=sharing

And here is the original dump file from Doom demo version[English mode].
https://drive.google.com/file/d/0B8JGJb ... sp=sharing