Dark-Souls-II-Archive-Dump

A partial dump of the encrypted game archives (PC Version 1.0.7) for those that are interested in examining the game assets.

This repository should contain all the files that are required to load a savegame at the Majula bonfire. Most of the files are stored in the following archives (Some files aren't packed and can be found in the sub-directories of the /Game/ directory):

• GameDataEbl
• HqChrEbl
• HqMapEbl
• HqObjEbl
• HqPartsEbl

The following archive file formats are used:

Name	Description
.anibnd	Animation archive
.bdt	General purpose archive (headerless)
.bhd	General purpose archive header
.bnd	General purpose archive
.commonbnd	General purpose archive
.dclbnd	Decal archive
.dcx	Compressed file archive
.envbnd	Map environment archive
.febnd	Frontend archive
.fetexbnd	Frontend texture archive
.ffxbnd	SFX archive
.fltbnd	Filter archive
.fontbnd	Font archive
.gibhd	Model archive header
.hkxbhd	Havok Engine archive header
.mapbhd	Map archive header
.texbnd	Texture archive
.tpfbdt	Texture archive (headerless)
.tpfbhd	Texture archive header

The following file formats are used in the archives:

Name	Description
.acb	Unknown (Map model/texture related)
.bin	Word filter
.bmp	Bitmap
.breakobj	Destructible map objects
.btao	Unknown (Map/Light related)
.btl	Unknown (Map related)
.btof	Unknown (Map/Light related)
.btpb	Unknown (Map/Point could related)
.btpo	Unknown (Map/Light related)
.ccm	Font glyph definition file (sans the font bitmap)
.clm	Unknown (Cloth related)
.ctl	FaceGen Control
.dds	Direct Draw Surface
.egt	FaceGen Statistical Texture
.emevd	Special effect table
.esd	AI state machine
.fev	Audio
.fltparam	Filter settings
.flvpwv	Unknown (Model related)
.fmg	String table
.fpo	Fragment shader
.fsb	Sound
.fxo	HLSLShader
.hkt	Unknown (Havok/Model related)
.hkx	Unknown (Havok related)
.hkxpwv	Unknown (Havok related)
.ini	Settings
.itl	Sound
.list	Map id and name table
.msb	Map layout
.mtd	Material
.mte	Unknown (Map related)
.mte	Unknown (Model related)
.ngp	Unknown (Map related)
.nmb	Unknown (Animation related)
.nsa	Animation
.param	General purpose lookup-table
.pem	RSA public key container
.pfbbin	Unknown (Model related)
.pxt	Unknown (Texture related)
.sib	Unknown (Model related)
.sfxparam	Sound settings
.tae	Animation listings and events
.tga	Truevision TGA
.tpf	Texture
.vpo	Vertex shader
.vsd	Voice synchronization
.xml	Shader information
.xpu	GUI HLSL Shader
.xvu	GUI HLSL Shader

Additional notes

There are 3 file formats that are used for many purposes.

• BND4 or Binder 4 is the most used archive format. It contains a table of all the files that it contains, their ASCII or UNICODE file names and sometimes even the full path from when they were packed.
• PARAM is a game archive that is is used to store easy accessible settings for many aspects of the game. Each map has its own set of param files that contain information about events, spawnpoints and objects. Most param files are stored in the file regulation.bnd. This file contains the so called calibrations (i.a. the stats of items, enemies and NPCs). It can be found in the /Game/ directory and is encrypted with AES-128. Each PARAM file consists of a lookup-table and a set of values of the same size. The size of each value depends on which param type is used (Each file contains the name of the type in its header).
• DCX is a format that is used to contain compressed data. e.g. the DEFLATE algorithm is used to compress the aforementioned calibration file. Judging from the DFLT signature in the header of each file it could be possible that other compression algorithms can be used.

In Dark Souls II each map has its own id. Majula for example has the id 10040000. FROM formats the map id like this mXX_XX_XX_XX. That means e.g. that files that are related to Majula have m10_04_00_00 in their name. Valid map ids can be found in WorldMapList.list or MapName.fmg.

Encryption

Regulation

Encryption	AES-128 CTR
Key	40178130DF0A94543309E171ECBF254C
IV	80B41AAA156D20001435434E00000001 (Valid for calibration 1.0.13

Savegames

Encryption	AES-128 CBC
Key	B7FD463E4A9C1102DF1739E5F3B2A50F
IV	First 16 bytes in the USER_DATA000-USER_DATA022 files
Checksum	Second 16 bytes in the USER_DATA000-USER_DATA022 files (Unknown algorithm)

Savegames SotFS

Encryption	Unknown
Key	Unknown
IV	First 16 bytes in the USER_DATA000-USER_DATA022 files
Checksum	Second 16 bytes in the USER_DATA000-USER_DATA022 files (Unknown algorithm)

Archive headers

Encryption	RSA 2048
Key	Public keys are stored in PKCS#1 PEM files
Remarks	The game uses OpenSSL and Eric Young's PKCS#1 RSA_eay_public_decrypt function

Archive data

Encryption	AES-128 ECB
Key	Keys are stored in the header file
Hash	SHA-256
Salt	Stored in the header file (e.g. FRPG2_STEAM_GAME_DATA_EBL_SALT for GameDataEbl.bhd)

Hashing

File name hash algorithm

1. Remove the prefix
2. Find the first occurrence of ':' * Abort if no ':' was found * Continue with the substring after ':'
3. Initialize the hash with 0
4. Iterate through the substring
5. If the character is uppercase then convert it to lowercase
6. If the character is '' then replace it with '/'
7. Multiply the hash with 37
8. Add the numeric representation of the character to the hash

File name hash example

File name	Archive	Hash
map:/param/GeneratorParam_m10_02_00_00.param	GameDataEbl	2779221649