Version 1.2-NX replaced ResMapPb.bytes with ResPackerInfoSet.bin

[yretenai]

Version 1.2.1.1 replaced ResMapPb.bytes with ResPackerInfoSet.bin, this is encrypted with the same method as ResMapPb using the filename "ResPackerInfoSet.bin" as salt.

However, the protobuf schema changed format, and is undecypherable by standard protobuf introversion. Considering the extension changed from .bytes to .bin, it could be that they are no longer using protobuf and instead using Unity Serialization which requires il2cpp introspection.

global-metadata.bin remains unmodified and parsable by conventional il2cpp processors.

1.1.1.6 ResMapPb lead-in bytes: 1A 07 31 2E 31 2E 31 2E 36 20 AB CF -> protobuf tag 0x1A + string 1.1.1.6 + protobuf tag 0x36 + leb128 305067
1.2.1.3 ResPackerInfoSet lead-in bytes: 07 31 2E 32 2E 31 2E 33 C4 A5 28 -> string 1.2.1.3 + protobuf tag 0x33 + leb128 660164

[MissingNOFan]

Also the case in Mobile. This NEEDS to be resolved so the Halloween menu music can be extracted!

[EoF-1141]

Sounds are a whole different ballgame.
But as for most of the archive type files it's purely Filename as Salt to derive a key from Switch Masterkey (also for mobile) and then decrypt&decompress.
As for @yretenai is there any way to contact you directly?

[yretenai]

The manfiest and asset bundles still decrypt with the old functions, although the filenames changed completely the encryption methods and keys have not. I do believe the new manifest remains to be protobuf or some derivitation of it.

You can contact me on twitter with the same handle (yretenai) but I am not very experienced with reverse engineering cryptography, mobile or switch games. Unite has already proved itself to me to be a bit over my head.

[hurdurivan]

@EoF-1141 Hi EoF! I know you helped around ProtoUnite and here, so I'm gonna try my luck!
After building the latest untie project from that fork and extracting, I get the assetbundles but they no longer work on AssetStudio (errors every single file). Is there a work around this or am I doing something wrong?
I've gone too far searching for an answer and couldnt come out with anything 👎

[KillerBOSS2019]

me too. I am am getting error on every file using AssetStudio with V1.2.1 Pokemon Unite

[SF-Cody]

Any updates on this one? I managed to get the data for the Android version of the game, altho I still need to decrypt the files itself to actually access it. Anyone know any workarounds that can be applied?

[EoF-1141]

@hurdurivan @KillerBOSS2019 @SF-Cody
The AssetBundle Encryption has changed.
Some Bundles (flag 0x400) now have a SecurityKey which is used in place of the AES and SM4 Keys

Updated the Fork to take care of it

[HolunderP]

So is there any way to get this work currently?

[EoF-1141]

By adapting it to solve the new crypto of the BlockInfo and adding zstd decompression for the blocks

[PokemonUnite129]

I don't know, if this conversation is still going on or not?