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Hacking Decrypting Wii VC nfs files

  • Thread starter Thread starter JaGoTu10
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I did some comparisons between wii and wiiu format. I have some python code too for reassembling files. Anyone with coding skills wanna team up (C or python whatever)?
 
OK, played around a bit

http://pastebin.com/74xxYt4p

This code is a terrible pain in the ass. The reason for this is that I'm not a dev. I have a theoretical understanding of coding, but practically no experiences. What does this code do? Well, you compile it, place it in the content folder of a decrypted WiiVC game and run it. It will combine the nfs files, removes EGGS header, decrypts and moves around certain parts of the file as instructed here:

http://gbatemp.net/threads/decrypting-wii-vc-nfs-files.452426/page-4#post-6925186

However it places the game partition at 0x50000 and not at 0xF800000. This seems to be the normal location for it (at least for SMG2). If you want that data in 0xF800000, remove the commentary in lines 199 and 200. For anything further, I need your help @Falo . Any hint how I encrypt/decrypt the game partition? I want to recreate what you have described in your post before I try to revert it. Would be nice, if you could give some hints. :)
 
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Actually here's all the information needed:

http://wiibrew.org/wiki/Wii_Disc

Actually all thats left to do, is to encrypt the game partition. But for this the partition key is needed and I have no idea to get that.

"Partition data is encrypted using a key, which can be obtained from the partition header and the master key."

If anyone knows how to construct this key I might be able to finish the nfs to iso program and can start on trying to revert it. I don't really have the time to spend 20+ hours figuring out this stuff. :/ So any help would be appreciated.
 
sabykos said:
This code is a terrible pain in the ass. The reason for this is that I'm not a dev. I have a theoretical understanding of coding, but practically no experiences.
Click to expand...
You don't have to be a dev, you just need experience.

Your code is good, but writing it in Python would be cleaner.
sabykos said:
Any hint how I encrypt/decrypt the game partition? I want to recreate what you have described in your post before I try to revert it. Would be nice, if you could give some hints. :)
Click to expand...
Use the game's title key to decrypt/encrypt the game partitions, the title key itself is encrypted, so you need to decrypt it using the Wii common key.

I can help you later if you want, right now I'm in a vacation. That's why I didn't make a tool myself.

The encrypted title key is inside the game's partition, I don't know how tools like Dolphin or Wiiscrubber obtain it before decrypting the partition first.
 
Last edited by AboodXD,
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sabykos said:
OK, played around a bit

http://pastebin.com/74xxYt4p

This code is a terrible pain in the ass. The reason for this is that I'm not a dev. I have a theoretical understanding of coding, but practically no experiences. What does this code do? Well, you compile it, place it in the content folder of a decrypted WiiVC game and run it. It will combine the nfs files, removes EGGS header, decrypts and moves around certain parts of the file as instructed here:

http://gbatemp.net/threads/decrypting-wii-vc-nfs-files.452426/page-4#post-6925186

However it places the game partition at 0x50000 and not at 0xF800000. This seems to be the normal location for it (at least for SMG2). If you want that data in 0xF800000, remove the commentary in lines 199 and 200. For anything further, I need your help @Falo . Any hint how I encrypt/decrypt the game partition? I want to recreate what you have described in your post before I try to revert it. Would be nice, if you could give some hints. :)
Click to expand...
In what language is written your code?
I tried to rename it to .Bat but nothing...
Bye!
 
Irastris said:
Oh boy...

If you can't recognize when something isn't batch code, I feel sorry for you.
Click to expand...
When i saw the beginning of the file slowly, i saw that it was C, but Chakratos replied me after this
I don't know if this will work, but if you don't know the key to encrypt/decrypt and you will inject it into an existing Wii VC game, use the same key that the original game, maybe...
Bye
 
Guys, the code isnt finished anyway. It just combines the nfs files, removes EGGS header, decrypts and moves around some stuff. The result is NOT a usable iso file, since the partition table points to the wrong place and the game partition is decrypted. All iso loaders expect encrypted game partitions.
 

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