ExeFS

ExeFS or Executable Filesystem, is the part of the CXI, which is executed when the CXI is run. And contains:

• .code Contains the code binary, which can be optionally reverse-LZSS compressed via an exheader flag.
• logo Contains distribution licensing Binary data.
• banner Contains the banner which homemenu uses for this CXI.
• icon Contains the icon which homemenu displays for this CXI.

AFTER DECRYPTION

The ExeFS header is 0x200 bytes long and follows this structure:

START	SIZE	DESCRIPTION
0x00	0x05	Always '.code'
0x05	0x03	Reserved
0x08	0x04	ARM Code Offset*
0x0C	0x04	ARM Code Length
0x10	0x06	Always 'banner'
0x16	0x02	Reserved
0x18	0x04	Banner Offset*
0x1C	0x04	Banner Length
0x20	0x04	Always 'icon'
0x24	0x04	Reserved
0x28	0x04	Icon Offset
0x2C	0x04	Icon Length
0x30	0x04	Always 'logo'**
0x34	0x04	Reserved
0x38	0x04	Logo Offset* **
0x3C	0x04	Logo Length**
0x40	0x140	Reserved
0x180	0x20	Logo Hash**
0x1A0	0x20	Icon Hash
0x1C0	0x20	Banner Hash
0x1E0	0x20	ARM Code Hash

* Offsets are non-inclusive of the header's size(0x200 bytes).

** The 'Logo' is not a compulsory part of ExeFS, so an ExeFS without a 'Logo', will have these entries of the header filled with zeros. .