Bayonetta 2 Binary XML (bxm files) - Kerilk/bayonetta_tools GitHub Wiki

bxm files present in Bayonetta 2. They are especially interesting as they give an XML representation of some files rather then a binary representation. The XML data is compressed. They can be decoded using Bayonetta 2 bxm.bt or for xml output: bxm_decoder.rb

Header

bxm files start with a 16 byte header.

offset	size	c type	description
0x00	4	char[4]	"XML\x00" or "BXM\x00"
0x04	4	uint32_t	seems to be flags
0x08	2	uint16_t	node count
0x0A	2	uint16_t	data count
0x0C	4	uint32_t	data size

Node Info

Directly following the header (at offset 0x10) is the node info. This is a list of structures of 8 bytes, one for each node, densely packed.

offset	size	c type	description
0x00	2	uint16_t	child count
0x02	2	uint16_t	first child index or next sibling list index
0x04	2	uint16_t	attribute count.
0x06	2	uint16_t	data index. Offset inside the data offset table, for node data and attributes.

Data Offsets

Directly following the node info (offset: 0x10 + 8 * nodeCount). This is a list of structures of 4 bytes, one for each data, densely packed.

offset	size	c type	description
0x00	2	uint16_t	name offset
0x02	2	uint16_t	value offset

Data

A list of zero terminated C strings (offset: 0x10 + 8 * nodeCount + 4 * dataCount). Its size is given in the header. Offsets inside this blob are given in the previous table.