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
Remove the prefix
Find the first occurrence of ':'
* Abort if no ':' was found
* Continue with the substring after ':'
Initialize the hash with 0
Iterate through the substring
If the character is uppercase then convert it to lowercase
If the character is '' then replace it with '/'
Multiply the hash with 37
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
About
Dark Souls II archive file information with examples