BNBSHPK (File Format)

BNBSHPK (Binary NX Bezel SHader PacKage) is an archive format used to store BFSHA files.

File Format

Header

The file starts with the following header:

Offset	Type	Description
0x00	Char[8]	File magic. Always BEZSHAPK in ASCII.
0x08	UInt32	Version number.
0x0C	UInt16	Byte-order-mark. FE FF for big endian, FF FE for little endian.
0x0E	Byte	Alignment shift. 2 raised by this value is the alignment required by this file when loaded into memory.
0x0F	Byte	Target address size. Size of a pointer in bits. Never set and there remains 0.
0x10	UInt32	Dummy value.
0x14	UInt16	A flag which is only used on runtime. One bit sets wether the file is relocated.
0x16	UInt16	Offset to the first section.
0x18	UInt32	Relocation table offset.
0x1C	UInt32	Size of the file in bytes.
0x20	Int64	File entry array offset.
0x28	UInt32	Number of file entries in this archive.
0x3C	Byte[4]	Padding?

File Entry

Offset	Type	Description
0x00	Int64	BFSHA file data offset.
0x08	?	More data? It is currently unknown how this structure looks since the only file seen only has one file entry.

String Table

The string table is a table where all strings are stored. Each string has first the length written, which is a 16-bit integer, and then the string is stored as a null-terminated string. The string length does not include the null byte, and the 16-bit string length value is always aligned by 2. The string sorting algorithm is unknown.

Offset	Type	Description
0x00	Char[4]	Section magic. Always _STR in ASCII.
0x04	UInt32	Next section offset.
0x08	UInt32	Size of this section in bytes.
0x0C	Byte[4]	Reserved.
0x10	Int32	Number of strings stored in the string table. The first string is always an empty string ("") and is not included in this count.

Relocation Table

Offset	Type	Description
0x00	Char[4]	Section magic. Always _RLT in ASCII.
0x04	UInt32	Table offset. The offset where this table starts.
0x08	Int32	Number of sections.
0x0C	Byte[4]	Padding.

Offset	Type	Description
0x00	Int64	Section pointer, set on runtime.
0x08	UInt32	Section offset.
0x0C	UInt32	Section size.
0x10	UInt32	Entry ID.
0x14	UInt32	Number of entries.

Offset	Type	Description
0x00	UInt32	Entry offset.
0x04	UInt16	Array count.
0x06	Byte	Offset count.
0x07	Byte	Padding size.

Version List

Version	Found in
1.0.0	Clubhouse Games: 51 Worldwide Classics Dr Kawashima's Brain Training for Nintendo Switch Everybody 1-2-Switch! Nintendo World Championships: NES Edition Super Mario Party Jamboree Tetris 99

Tools

The following tools can handle BNBSHPK files:

• (none)