STFS

STFS (Secure Transacted File System) is the file system used by the Xbox 360 for all packages created and downloaded by the system. It is protected using a series of SHA1 hashes and a RSA signature. There are three different kinds of STFS packages, CON packages which are signed by consoles and LIVE/PIRS packages which are signed by Microsoft.

STFS MetaData

Offset	Length	Type	Information
0x22C	0x100	license entries (see below)	Licensing Data (used to check package owner)
0x32C	0x14	bytes	Content ID / Header SHA1 Hash
0x340	0x4	unsigned int	Entry ID
0x344	0x4	signed int	Content Type (see below)
0x348	0x4	signed int	Metadata Version (see below)
0x34C	0x8	signed long	Content Size
0x354	0x4	unsigned int	Media ID
0x358	0x4	signed int	Version (system/title updates)
0x35C	0x4	signed int	Base Version (system/title updates)
0x360	0x4	unsigned int	Title ID
0x364	0x1	byte	Platform (xbox/gfwl?)
0x365	0x1	byte	Executable Type
0x366	0x1	byte	Disc Number
0x367	0x1	byte	Disc In Set
0x368	0x4	unsigned int	Save Game ID
0x36C	0x5	bytes	Console ID
0x371	0x8	bytes	Profile ID
0x379	0x1	byte	Volume Descriptor Struct Size
0x37A	0x1	byte	Reserved
0x37B	0x1	byte	Block Seperation
0x37C	0x2	signed short	File Table Block Count
0x37E	0x3	signed int24	File Table Block Number
0x381	0x14	bytes	Top Hash Table Hash
0x395	0x4	signed int	Total Allocated Block Count
0x399	0x4	signed int	Total Unallocated Block Count
0x39D	0x4	signed int	Data File Count
0x3A1	0x8	signed long	Data File Combined Size
0x3A9	0x8	bytes	Reserved
0x3B1	0x4C	bytes	Padding
0x3FD	0x14	bytes	Device ID
0x411	0x900 (each 0x80 = different locale)	unicode string	Display Name
0xD11	0x900 (each 0x80 = different locale)	unicode string	Display Description
0x1611	0x80	unicode string	Publisher Name
0x1691	0x80	unicode string	Title Name
0x1711	0x1	byte	Transfer Flags (see below)
0x1712	0x4	signed int	Thumbnail Image Size
0x1716	0x4	signed int	Title Thumbnail Image Size
0x171A	0x4000 (thumbnail size)	image	Thumbnail Image
0x571A	0x4000 (title thumbnail size)	image	Title Thumbnail Image

Metadata version 2

If the Metadata Version field is set to 2, the format is slightly changed:

Offset	Length	Type	Information
0x3B1	0x10	bytes	Series ID
0x3C1	0x10	bytes	Season ID
0x3D1	0x2	signed short	Season Number
0x3D5	0x2	signed short	Episode Number
0x3D5	0x28	bytes	Padding
0x171A	0x3D00 (thumbnail size)	image	Thumbnail Image
0x541A	0x300 (each 0x80 = different locale)	image	Additional Display Names
0x571A	0x3D00 (title thumbnail size)	image	Title Thumbnail Image
0x941A	0x300 (each 0x80 = different locale)	image	Additional Display Descriptions

License Entries

For every entry in the license data field:

Offset	Length	Type	Information
0x0	0x8	signed long	License ID (XUID / PUID / console id)
0x8	0x4	signed int	License Bits
0xC	0x4	signed int	License Flags

Content Types

Value	Description
0xD0000	Arcade Title
0x9000	Avatar Item
0x40000	Cache File
0x2000000	Community Game
0x80000	Game Demo
0x20000	Gamer Picture
0xA0000	Game Title
0xC0000	Game Trailer
0x400000	Game Video
0x4000	Installed Game
0xB0000	Installer
0x2000	IPTV Pause Buffer
0xF0000	License Store
0x2	Marketplace Content
0x100000	Movie
0x300000	Music Video
0x500000	Podcast Video
0x10000	Profile
0x3	Publisher
0x1	Saved Game
0x50000	Storage Download
0x30000	Theme
0x200000	TV
0x90000	Video
0x600000	Viral Video
0x70000	Xbox Download
0x5000	Xbox Original Game
0x60000	Xbox Saved Game
0x1000	Xbox 360 Title
0x5000	Xbox Title
0xE0000	XNA

Transfer Flags

Value	Description
0x00	DeviceID and ProfileID Transfer
0x20	Move Only Transfer
0x40	DeviceID Transfer
0x80	ProfileID Transfer
0xC0	None