Genshin Impact Full release .blk Encryption

Extraction and unpacking of game archives and compression, encryption, obfuscation, decoding of unknown files
HumbleG
Posts: 3
Joined: Sun Sep 27, 2020 7:08 pm

Genshin Impact Full release .blk Encryption

Post by HumbleG »

Hi people today is the Genshin Impact worldwide release.
The game use Unity3D but the usual tools (UABE, AssetStudio) don't work with .blk files cause encryption.
There is an old topic viewtopic.php?f=9&t=13317 that found a solution but the game now has a more security I guess and the old decryption tool isn't working anymore. So I wanted to start a new topic wishing to find a new solution to this matter.
Mysticus
Posts: 182
Joined: Sat Mar 02, 2019 3:24 pm

Re: Genshin Impact Full release .blk Encryption

Post by Mysticus »

I got your back, HumbleG.
I uploaded .blk samples here.
https://drive.google.com/file/d/1enr71V ... IcskJnVtX9
Toko
Posts: 2
Joined: Wed Sep 30, 2020 2:21 pm

Re: Genshin Impact Full release .blk Encryption

Post by Toko »

Are these blks decrypted? I still can't open them with asset studio
Mysticus
Posts: 182
Joined: Sat Mar 02, 2019 3:24 pm

Re: Genshin Impact Full release .blk Encryption

Post by Mysticus »

Unfortunately yes.
We must wait for the uncryption tool for this game.
Toko
Posts: 2
Joined: Wed Sep 30, 2020 2:21 pm

Re: Genshin Impact Full release .blk Encryption

Post by Toko »

Is there a link to the CBT2 Files?
HumbleG
Posts: 3
Joined: Sun Sep 27, 2020 7:08 pm

Re: Genshin Impact Full release .blk Encryption

Post by HumbleG »

Mysticus do you have CBT2 files? In theory those files can be decrypted with Blue efie Decryption tool.
Btw I found this web https://www.twblogs.net/a/5d11f8ecbd9eee1e5c821fba?lang=zh-cn very old but can give us hints on how is encrypted Genshin impact.
TheyCallMeAnon
Posts: 4
Joined: Thu Oct 01, 2020 8:09 pm

Re: Genshin Impact Full release .blk Encryption

Post by TheyCallMeAnon »

Hey, first post on this forum, I just wanted to point out that there is in fact an assets bundle on the previous thread that you linked, a Google drive link:

jovehong wrote:
aluigi wrote:Please just limit yourself to provide only the requested files for analysis.
If it's a closed beta probably you are not allowed to share the whole game (not sure how it works but check by yourself).
So, jovehong, I guess it's better if you edit your links.


this closed beta needs invited account to play game
isn't it ok to share?

whatever, currently upload zip to google drive


*edit*
https://drive.google.com/drive/folders/ ... sp=sharing
2 assets .blk zip, 1 localge.pak


I already downloaded the 4GB assets zip and decrypted using this tool:

BlueEffie wrote:Genshin CB2 Decryption tool download path
After decryption, please use AssetStudio fixed in the compressed package
https://mega.nz/file/Bx1Q3K5a#_CXIyHIuf ... 1FbCHnj7Ak


I can confirm it decrypts everything without a fail but AssetStudio fail to load a lot of stuff, I am trying VERY HARD to get Amber's clothes textures and went tru almost every single file but I don't think it is there or perhaps AssetStudio is skipping it with an error, if someone can find that texture in the bundle I WOULD VERY HIGHLY GRATEFUL FOR THE REST OF MY LIFE.
Rampage21
Posts: 4
Joined: Fri Oct 02, 2020 2:31 pm

Re: Genshin Impact Full release .blk Encryption

Post by Rampage21 »

"Avatar_Girl_Bow_Ambor_Tex_Body_Diffuse" that the name of asset
To view it in asset studio u have to toggle alpha channel (ctrl + A)

Image
Image
TheyCallMeAnon
Posts: 4
Joined: Thu Oct 01, 2020 8:09 pm

Re: Genshin Impact Full release .blk Encryption

Post by TheyCallMeAnon »

Thank you so much!, I can confirm turning the Alpha channel on those "Avatar_" textures that are 1024x1024 and have nothing but a little circular icon in them, contain the whole clothing textures of characters, go to your exporting options and select BMP instead of PNG and you can save the whole thing and not just the little icon.

Thank you!
Last edited by TheyCallMeAnon on Sat Oct 03, 2020 4:09 am, edited 1 time in total.
Yes
Posts: 1
Joined: Fri Oct 02, 2020 10:23 pm

Re: Genshin Impact Full release .blk Encryption

Post by Yes »

Any info on the Full Release decryption? Mainly commenting to see updates :D
Balyuva17
Posts: 1
Joined: Sun Oct 04, 2020 6:34 pm

Re: Genshin Impact Full release .blk Encryption

Post by Balyuva17 »

If you're like me and can't find the right faces in that mess, you can get some of the character models in .pmx (MMD) format at https://ys.biligame.com/gczj/?spm_id_fr ... 766f7465.1 (scroll down a bit)
Iggybank
Posts: 1
Joined: Mon Oct 05, 2020 9:13 am

Re: Genshin Impact Full release .blk Encryption

Post by Iggybank »

anyone have any luck getting avatar meshes from the cbt2 or full release files?
Giordyman
Posts: 2
Joined: Mon Oct 05, 2020 9:57 pm

Re: Genshin Impact Full release .blk Encryption

Post by Giordyman »

Is anyone capable of getting animations files?
alaula1
Posts: 4
Joined: Tue Oct 06, 2020 5:06 am

Re: Genshin Impact Full release .blk Encryption

Post by alaula1 »

Rampage21 wrote:"Avatar_Girl_Bow_Ambor_Tex_Body_Diffuse" that the name of asset
To view it in asset studio u have to toggle alpha channel (ctrl + A)

Image
Image



CB2 4GB assets zip AssetStudio fail to load a lot of stuff,I can't find mesh ˃̣̣̥⌓˂̣̣̥,Can you teach me?
alaula1
Posts: 4
Joined: Tue Oct 06, 2020 5:06 am

Re: Genshin Impact Full release .blk Encryption

Post by alaula1 »

Image

I can't find the model, Can anyone help me? :mrgreen:
alaula1
Posts: 4
Joined: Tue Oct 06, 2020 5:06 am

Re: Genshin Impact Full release .blk Encryption

Post by alaula1 »

These mesh!! :shock:
Image
Rampage21
Posts: 4
Joined: Fri Oct 02, 2020 2:31 pm

Re: Genshin Impact Full release .blk Encryption

Post by Rampage21 »

U need to find right "Body" because they have the same name.
Image
Teapot
Posts: 9
Joined: Wed Mar 25, 2020 7:41 pm

Re: Genshin Impact Full release .blk Encryption

Post by Teapot »

Keep it on topic guys. We're here to talk about the decryption of the final release.

I got some friends working on it, yet will need to see if they can do it. They said it's a pretty hard encryption and safety method they are using.
alaula1
Posts: 4
Joined: Tue Oct 06, 2020 5:06 am

Re: Genshin Impact Full release .blk Encryption

Post by alaula1 »

Rampage21 wrote:U need to find right "Body" because they have the same name.
Image


I don't know what's wrong ˃̣̣̥⌓˂̣̣̥ ,I put these unity3d(83797 4.14GB) Import all

But no Mesh was found,Please help me.˃̣̣̥⌓˂̣̣̥

Image
Image
Image
chrrox
Posts: 388
Joined: Thu Aug 07, 2014 10:28 pm

Re: Genshin Impact Full release .blk Encryption

Post by chrrox »

I just need to find how BH3Key.DynamicKey is generated then I should be able to decrypt the retail files.