Sorry, I can't offer any more help than uploading an example archive, but I suspect people will want this more than your normal custom archive format because of the game's popularity.

they'll do the same stupid shit they always do. rip models and textures, rip sounds, translate to another language.

what "modding" comes down to these days

Actually, My personal idea was to find a decent David Hayter Impersonator and do a Classic Snake Voice Pack..

Or give Arin Hanson a Million dollars for METAL GEAR AWESOME V..

That's just a WMV file



Well I've modded new maps in metal gear online and such, there's a lot that can be done with metal gear games, I do dislike how people assume just because a games on pc now it will be modded, like they don't think of the fact that someone puts effort in to actually reverse the file formats etc.

Indeed, Data0 is a renamed WMV file.

Data1 and Data2, However, seem to be encrypted formats:

(From cra0kalo on ZenHAX)

And theres something wrong with that?

If a game requires modding to be a good game, then its obviously not a good game in the first place.

Some games suit the modding scene and others don't.

A game like skyrim isn't story centric its gameplay centric, modding improves the gameplay elements, and its built with modding in mind, its easier for people to make entirely new things, more than just textures and models. Other games, like lets say MGSV, are story centric, most people are going to simply translate, swap out audio, maybe a model swap or 2, thats it, not all games improve with mods, and to be honest from my perspective, most of the mods seem pointless anyway.

Theres this whole 'high and mighty' attitude around modding games, I can't stand this, some people mod, some don't, thats all there is to it, if someones such a fantastic modder, go off and actually design original games.

_________________
"Lemons are people nice hardworking & honest people too..."

The archive format is easy the file table is at the end and its very easy format.
The file names are hashes.
And the files are encrypted like every other metal gear game so someone will have to reverse it to make a proper extractor.
Also someone will need to dump the file names to match the file name hashes.

You can make temporary script for dump encrypted data's? I'll look what I can do with this.

it might be a 64bit string instead of 32bit not sure.

Hm strange hashes.

Hash is 64 bit. First two bytes is an extention ID, rest is calculated from name string (without extention if id != 0). Same was in previous MGS games except it was 32 bit and only 1 byte for an extention ID.

The original names of data_01.g0s and data_02.g0s are texture.qar and data.qar respectively. In PS3 version there was no data.qar file, instead files were unpacked and the game was using pathid_list_ps3.bin to match hashes and filenames.
In MgsGroundZeroes.exe I have found a reference to pathid_list_win64_stm.bin and when I created an empty file with that name the game crashed. So I guess the game's still using it and if we find a way to extract data.qar (data_02.g0s) there will be no need for repacking it.

What a hash algorithm they used for previous game versions? I see CRC64 in this game with ecma tab.

I have discovered the encryption/decryption method! The tool is coming up shortly.


I don't know the name of the algorythm (and it probably doesn't have one) but here's the code I have reversed from MGS 3 a long time ago. Same code was used for MGS 2 and MGS 4 as well.

Nice, I was trying to figure this out for MGS4 for quite a while.

Ok here's the tool.
link