YPF: Difference between revisions
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| 4Bytes|| Unknown1 || Static? | | 4Bytes|| Unknown1 || Static? | ||
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| 4Bytes|| | | 4Bytes|| File Count || Number of Files in archive | ||
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| 4Bytes|| | | 4Bytes|| Index Size || Size of Index | ||
|- | |- | ||
| 16Bytes|| | | 16Bytes|| Padding || | ||
|- | |- | ||
!colspan="15"|Index Entry | !colspan="15"|Index Entry | ||
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| ?Bytes|| Filename || | | ?Bytes|| Filename || | ||
|- | |- | ||
| | | 2Bytes|| Unknown || | ||
|- | |- | ||
| 4Bytes|| | | 4Bytes|| FileSize1 || Possible File size1 | ||
|- | |- | ||
| | | 4Bytes|| FileSize2 || Possible File size2 (compression?) | ||
|- | |||
| 4Bytes|| File Offset || | |||
|- | |||
| 4Bytes|| Unknown || | |||
|} | |} | ||
Revision as of 21:34, 13 March 2015
Used in the following games:
- Eroge! ~Sex and Games Make Sexy Games~
Structure
| Header | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Content | Description | ||||||||||||
| 4Bytes | Magic/ID | "YPF/0" | ||||||||||||
| 4Bytes | Unknown1 | Static? | ||||||||||||
| 4Bytes | File Count | Number of Files in archive | ||||||||||||
| 4Bytes | Index Size | Size of Index | ||||||||||||
| 16Bytes | Padding | |||||||||||||
| Index Entry | ||||||||||||||
| Size | Content | Description | ||||||||||||
| 4Bytes | Unknown1 | |||||||||||||
| 1Bytes | Unknown2 | Possible filename length | ||||||||||||
| ?Bytes | Filename | |||||||||||||
| 2Bytes | Unknown | |||||||||||||
| 4Bytes | FileSize1 | Possible File size1 | ||||||||||||
| 4Bytes | FileSize2 | Possible File size2 (compression?) | ||||||||||||
| 4Bytes | File Offset | |||||||||||||
| 4Bytes | Unknown | |||||||||||||
Research
sn 30,869,553 18 716
# EntrySize First 5bytes Filename size
01 36 22 03 5B AA 53 13+1
02 36 E3 48 2B 9A 53 13+1
03 36 92 2A 3B 9753 13+1
04 53 E0 81 A7 8D 5D 29+1
05 42 E9 AB B7 ED 42 19+1
06 33 8B D9 C2 E4 4A 10+1
07 36 83 1B EB E0 53 13+1
08 36 33 32 8B DD 53 13+1
09 51 50 1F C2 CE 5E 28+1
10 36 F3 94 0B 28 53 13+1
Hints:
B8 should be 00
53 should be 13 or 14
Comments
Index data may be protected.
XOR by FF then XOR by 40 may work.