PSISOIMG0000
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This format is used for PSONE Classics on PS3 and PSP.
EBOOT.PBP
Contents:
- PARAM.SFO
- ICON0.PNG
- ICON1.PMF
- PIC0.PNG
- PIC1.PNG
- SND0.AT3
- DATA.PSP
- DATA.PSAR
DATA.PSAR
- Contains the ISO (usually compressed)
| Offset | Notes |
|---|---|
| 0x0 | PSISOIMG0000 |
| 0x400 | iso header (encrypted, probably ignored by ps1_netemu) |
| 0x1220 | special data (encrypted) |
| 0x100000 | start of the iso |
ISO.BIN
This file helps the PS3 to verify the content of DATA.PSAR (and maybe to decrypt the iso header). At the end of the file, there is a signature which can be used to verify the contents. All offsets are in little endian.
Patch for disabling the signature check in ps1_netemu
set search "\xE8\x7F\x01\x80\xE9\x61\x00\x00\xE8\x0B\x00\x10\x7C\x08\x03\xA6"
set replace "\x38\x60\x00\x00"
catch_die {:: patch_elf $elf $search 0 $replace} "Unable to patch self [file tail $elf]"
- tested manually (without mfw creator)
Structure
| Offset | Notes |
|---|---|
| 0x0 | PSISOIMG0000 |
| 0x400 | iso header (decrypted) |
| 0x4000 | start of entries |
Entries
- Starting at 0x4000
- Each entry represents 0x10 Sectors of the iso
- One sector has 0x930 bytes (2352 bytes)
- Sectors are compressed
- same entries can be found in the decrypted iso_header of the EBOOT.PBP
| Entry Nº | Offset | Length | Name | Example | Notes |
|---|---|---|---|---|---|
| 1 | 0x00 | 4 bytes (0x04) | offset in iso | 0 | offset relative to start of the iso inside of DATA.PSAR |
| 0x04 | 2 bytes (0x02) | size | variable | size of 0x10 sectors (compressed, if not 0x9300) | |
| 0x06 | 2 bytes (0x02) | type ? | 01 00 | usually 1... and 0 for the last entry | |
| 0x08 | 16 bytes (0x10) | sha1 | variable | first 0x10 bytes of sha1 sum of 0x10 disc sectors | |
| 0x18 | 8 bytes (0x08) | padding | |||
| Up to 32256 | same structure than the previous entry |