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Monster Hunters Riders Unknown Model Firmat

Post questions about game models here, or help out others!
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Darkhowlings
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Monster Hunters Riders Unknown Model Firmat

Post by Darkhowlings »

I was surprised the data of game it is not rooted on the phone, so I give a look at it for see the data is easy to access, but it has no format or clue to what format could it be.

So, I come here for see what can you guys find out, of course with two examples:

https://drive.google.com/file/d/1W44cag ... sp=sharing

One character and monster folder of what I think it could be the model.

Hope anyone got luck with it.
Silvris
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Re: Monster Hunters Riders Unknown Model Firmat

Post by Silvris »

It's encrypted Unity asset bundles, not sure on the decryption method but I know someone was able to decrypt it. The encryption is actually rather recent, used to be unencrypted.
Spiritovod
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Re: Monster Hunters Riders Unknown Model Firmat

Post by Spiritovod »

It's simple xor on header part of model and atlas files (the rest is not encrypted). Key is dynamic for every file, probably derived from hash128 value, included in manifests. Here is workaround, which should work fine too. Tested on a few assets from 2.03 version of the game.
MHR_decrypt.zip
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Darkhowlings
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Re: Monster Hunters Riders Unknown Model Firmat

Post by Darkhowlings »

Wow! It actually works!! Thank so much!!
CuchiPol
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Re: Monster Hunters Riders Unknown Model Firmat

Post by CuchiPol »

Hello, how do I open the file after using quickbms?

it only gives me a "filename_decrypted" file. Thanks
Spiritovod
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Re: Monster Hunters Riders Unknown Model Firmat

Post by Spiritovod »

They are unity bundles, so they're compatible with any unity tools like AssetStudio.
CuchiPol
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Re: Monster Hunters Riders Unknown Model Firmat

Post by CuchiPol »

Hello again, I've managed to extract the bundle using uTinyRipper but it only gives me a a bunch of .asset, .meta, and .prefab files. Just want to get some 3d models. I also got the texture from TinyRipper
Darkhowlings
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Re: Monster Hunters Riders Unknown Model Firmat

Post by Darkhowlings »

CuchiPol wrote: Mon Dec 07, 2020 2:22 pm Hello again, I've managed to extract the bundle using uTinyRipper but it only gives me a a bunch of .asset, .meta, and .prefab files. Just want to get some 3d models. I also got the texture from TinyRipper
Use:
Spiritovod wrote: Sat Dec 05, 2020 2:05 pm They are unity bundles, so they're compatible with any unity tools like AssetStudio.


Did that way and I was able to unpack models with textures and bones.
CuchiPol
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Re: Monster Hunters Riders Unknown Model Firmat

Post by CuchiPol »

Nice! I've managed to get the 3d models with that is fbx - with bones. Thanks! Another question. What program do I need to use in order to open the obb/data folder of MHRiders game? I tried winrar but its giving me an error.
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