Commandos2&3 PCK File Structure Table
Commandos2&3 PCK File Structure Table
written by F.R.C.
|
Data Area |
Data Block |
Data |
Data Type |
Length |
Description |
Sample Data |
|
Header DA |
File DB |
Name |
String |
36 |
File Name |
44415441(DATA) |
|
Type |
Int32 |
4 |
0 for files, 1 for directories, 0xFF for directory tails |
00000000/01000000/FF000000 |
||
|
Length |
Int32 |
4 |
0xFFFFFFFF for directories |
DA2E0000 |
||
|
Address |
Int32 |
4 |
File data address. for directories, it's the address of the first File DB in the directory |
|
||
|
There's many File DBs. For directories, they are matched by the directories' File DBs and their tail File DBs where File DB and Name is null, Type is 0xFF and Length and Address is 0xFFFFFFFF |
||||||
|
Data DA |
Data DB |
|
|
|
File data, aligned with the unit of 2048 bytes. This part in Comm3 is encoded with a simple XOR method. |
|
|
There's many Data DBs |
||||||
Notice:
1. All numerical data types are in little-endian.
2.The directory File DB match pattern: directories and directory tails match in a way like the multiple brackets, which is different from DIR file of Comm1, namely:
DATA{
PARGLOBAL.DAT
VAR.DAT
ANIMS{
ACTIVADOR.AN2
...
ABI{
...
}
}
...
}
3.The XOR method of Comm3:
Comm3 Xor a key for every first byte of every 16 bytes in each file. The first key for each file is calculated as follows:
The 4 high digits is the second hex number in the right of the offset, the 4 low digits is the result of the offset mod by 7 and translated with the following table.
0-0 1-4 2-9 3-D 4-2 5-6 6-B
Then every key is the result of the previous key added by 1 for high and low digits respectively. And the low digits should be added an extra 1 if it's 7 or 0xF. And we assume that for either high or low digits, 0xF + 1 = 0.
Then Xor the first byte of each line with the key, you'll get the original file.
Appendix:
The analysis process for the XOR method in Comm3
Take DATA.PCK as example.
Comm3 did some XOR stuff to the first byte of each line. (We come out in the first place.)
Suppose the key is x, the original byte is s, the coded byte is t, then
t = s Xor x
s = t Xor x
So we can use
x = s Xor t
to get the key.
First,
|
Offset |
Guessed original bytes |
Coded bytes |
Keys |
|
00026000h |
5B |
56 |
0D |
|
00026010h |
20 |
3E |
1E |
|
000260B0h |
20 |
|
BA |
|
|
42 |
42 |
00 |
|
|
42 |
40 |
02 |
|
0002AAD0h |
74 |
A1 |
D5 |
|
0002AAE0h |
00 |
E6 |
E6 |
|
0002AAF0h |
61 |
99 |
F8 |
|
0002AB00h |
72 |
7B |
09 |
|
0002AB10h |
2E |
34 |
|
|
0002AB20h |
|
44 |
2B |
|
0002AB30h |
35 |
09 |
|
|
0002AB40h |
74 |
39 |
4D |
|
0002AB50h |
66 |
38 |
5E |
|
0002AB60h |
61 |
01 |
60 |
|
0002AB70h |
61 |
10 |
71 |
|
0002AB80h |
62 |
E0 |
82 |
|
|
|
|
|
|
00026000h |
5B |
56 |
0D |
|
00026010h |
20 |
3E |
1E |
|
00026020h |
|
|
20 |
|
00026030h |
09 |
38 |
31 |
|
00026040h |
|
1D |
42 |
|
00026050h |
|
|
53 |
|
00026060h |
20 |
44 |
64 |
|
00026070h |
50 |
25 |
75 |
|
00026080h |
20 |
A6 |
86 |
|
00026090h |
4E |
D6 |
98 |
|
|
28 |
89 |
A9 |
|
|
|
|
|
|
00029800h |
20 |
2E |
0D |
|
00029810h |
2D |
33 |
1E |
|
00029820h |
2D |
0D |
20 |
|
00029830h |
2D |
|
31 |
|
00029840h |
2D |
|
42 |
|
00029850h |
2D |
7E |
53 |
|
|
|
|
|
|
|
42 |
42 |
00 |
|
|
42 |
40 |
02 |
|
0002B000h |
42 |
46 |
04 |
We can know that the high digits is the second hex number in the right of the offset. And every key is the result of the previous key added by 1 for high and low digits respectively. And the low digits should be added an extra 1 if it's 7 or 0xF. And we assume that for either high or low digits, 0xF + 1 = 0.
And for the low digits of the key for the first line of each file, we get as follows:
The key is highly suspected to be involved with the file address or the file length.
There are many files started with "BSMB". (We know it because we can find many in the Comm2 files.) We find out all files with the start of "*SMB", and the we assume the "*" is "B", then we get the key (* Xor 4216). Sort it, and we get the first two columns of the following table.
We can then find out there's only 7 kinds of key. So we do mod 7 for each file address and length, and get the following table. Then we can know the address mod 7 is exactly mapped one on one, namely
0-0 1-4 2-9 3-D 4-2 5-6 6-B
Then we finished the analysis.
|
Offset |
Key |
File Address mod 7 |
File Address mod 7 |
|
0002A000h |
00 |
00 |
05 |
|
00042800h |
00 |
00 |
06 |
|
00049800h |
00 |
00 |
05 |
|
0004D000h |
00 |
00 |
01 |
|
00050800h |
00 |
00 |
02 |
|
00054000h |
00 |
00 |
03 |
|
00057800h |
00 |
00 |
04 |
|
0005B000h |
00 |
00 |
02 |
|
00062000h |
00 |
00 |
04 |
|
00065800h |
00 |
00 |
02 |
|
00069000h |
00 |
00 |
00 |
|
0007E000h |
00 |
00 |
02 |
|
00081800h |
00 |
00 |
02 |
|
0009D800h |
00 |
00 |
02 |
|
000AF000h |
00 |
00 |
06 |
|
000B2800h |
00 |
00 |
04 |
|
000B6000h |
00 |
00 |
02 |
|
000B9800h |
00 |
00 |
06 |
|
000BD000h |
00 |
00 |
03 |
|
000C0800h |
00 |
00 |
06 |
|
000C4000h |
00 |
00 |
03 |
|
000D5800h |
00 |
00 |
01 |
|
000D9000h |
00 |
00 |
03 |
|
000DC800h |
00 |
00 |
00 |
|
000E0000h |
00 |
00 |
02 |
|
000E3800h |
00 |
00 |
03 |
|
000E7000h |
00 |
00 |
00 |
|
000EA800h |
00 |
00 |
05 |
|
000EE000h |
00 |
00 |
01 |
|
000FF800h |
00 |
00 |
05 |
|
0010A000h |
00 |
00 |
05 |
|
0010D800h |
00 |
00 |
06 |
|
00111000h |
00 |
00 |
06 |
|
00114800h |
00 |
00 |
00 |
|
00118000h |
00 |
00 |
02 |
|
0011B800h |
00 |
00 |
00 |
|
0011F000h |
00 |
00 |
00 |
|
00145800h |
00 |
00 |
03 |
|
02418000h |
00 |
00 |
02 |
|
0241F000h |
00 |
00 |
03 |
|
02429800h |
00 |
00 |
00 |
|
03C39800h |
00 |
00 |
04 |
|
08E76000h |
00 |
00 |
04 |
|
08ECA000h |
00 |
00 |
03 |
|
09771800h |
00 |
00 |
03 |
|
09FF6000h |
00 |
00 |
00 |
|
0BBE1000h |
00 |
00 |
00 |
|
0D9FC000h |
00 |
00 |
03 |
|
1CAD7800h |
00 |
00 |
04 |
|
1CAF0000h |
00 |
00 |
04 |
|
0002A800h |
02 |
04 |
03 |
|
0003F800h |
02 |
04 |
00 |
|
00046800h |
02 |
04 |
05 |
|
0004A000h |
02 |
04 |
05 |
|
0004D800h |
02 |
04 |
01 |
|
00051000h |
02 |
04 |
04 |
|
00054800h |
02 |
04 |
00 |
|
00058000h |
02 |
04 |
01 |
|
0005B800h |
02 |
04 |
01 |
|
00062800h |
02 |
04 |
00 |
|
00066000h |
02 |
04 |
05 |
|
0007E800h |
02 |
04 |
02 |
|
00082000h |
02 |
04 |
01 |
|
0009E000h |
02 |
04 |
01 |
|
000AF800h |
02 |
04 |
01 |
|
000B3000h |
02 |
04 |
04 |
|
000B6800h |
02 |
04 |
02 |
|
000BA000h |
02 |
04 |
06 |
|
000BD800h |
02 |
04 |
00 |
|
000C1000h |
02 |
04 |
01 |
|
000C4800h |
02 |
04 |
04 |
|
000D6000h |
02 |
04 |
06 |
|
000D9800h |
02 |
04 |
05 |
|
000DD000h |
02 |
04 |
04 |
|
000E0800h |
02 |
04 |
03 |
|
000E4000h |
02 |
04 |
06 |
|
000E7800h |
02 |
04 |
02 |
|
000EB000h |
02 |
04 |
01 |
|
000EE800h |
02 |
04 |
02 |
|
00100000h |
02 |
04 |
01 |
|
00103800h |
02 |
04 |
05 |
|
00107000h |
02 |
04 |
01 |
|
0010A800h |
02 |
04 |
03 |
|
0010E000h |
02 |
04 |
01 |
|
00111800h |
02 |
04 |
01 |
|
00115000h |
02 |
04 |
02 |
|
00118800h |
02 |
04 |
02 |
|
0011C000h |
02 |
04 |
00 |
|
02423000h |
02 |
04 |
01 |
|
02426800h |
02 |
04 |
01 |
|
08490800h |
02 |
04 |
06 |
|
08E81000h |
02 |
04 |
02 |
|
097A3000h |
02 |
04 |
04 |
|
0CD73000h |
02 |
04 |
01 |
|
0E1CB000h |
02 |
04 |
03 |
|
0E59B800h |
02 |
04 |
01 |
|
0E5A6000h |
02 |
04 |
03 |
|
0002B000h |
04 |
01 |
00 |
|
0003C800h |
04 |
01 |
03 |
|
00043800h |
04 |
01 |
06 |
|
00047000h |
04 |
01 |
05 |
|
0004A800h |
04 |
01 |
06 |
|
0004E000h |
04 |
01 |
01 |
|
00051800h |
04 |
01 |
03 |
|
00055000h |
04 |
01 |
04 |
|
00058800h |
04 |
01 |
06 |
|
0005C000h |
04 |
01 |
01 |
|
00063000h |
04 |
01 |
04 |
|
00066800h |
04 |
01 |
04 |
|
0007B800h |
04 |
01 |
06 |
|
0007F000h |
04 |
01 |
03 |
|
0009E800h |
04 |
01 |
05 |
|
000B0000h |
04 |
01 |
06 |
|
000B3800h |
04 |
01 |
05 |
|
000B7000h |
04 |
01 |
02 |
|
000BA800h |
04 |
01 |
03 |
|
000BE000h |
04 |
01 |
02 |
|
000C1800h |
04 |
01 |
00 |
|
000D6800h |
04 |
01 |
04 |
|
000DA000h |
04 |
01 |
06 |
|
000E1000h |
04 |
01 |
04 |
|
000E4800h |
04 |
01 |
00 |
|
000E8000h |
04 |
01 |
06 |
|
000EB800h |
04 |
01 |
03 |
|
000EF000h |
04 |
01 |
01 |
|
00100800h |
04 |
01 |
06 |
|
00104000h |
04 |
01 |
01 |
|
00107800h |
04 |
01 |
01 |
|
0010B000h |
04 |
01 |
04 |
|
0010E800h |
04 |
01 |
00 |
|
00112000h |
04 |
01 |
04 |
|
00115800h |
04 |
01 |
02 |
|
00119000h |
04 |
01 |
06 |
|
0011C800h |
04 |
01 |
00 |
|
02415800h |
04 |
01 |
01 |
|
02419000h |
04 |
01 |
01 |
|
0241C800h |
04 |
01 |
00 |
|
02423800h |
04 |
01 |
06 |
|
02427000h |
04 |
01 |
00 |
|
07D60000h |
04 |
01 |
00 |
|
07D6E000h |
04 |
01 |
05 |
|
084A6000h |
04 |
01 |
02 |
|
097B8800h |
04 |
01 |
01 |
|
0AFB7000h |
04 |
01 |
03 |
|
0ED59000h |
04 |
01 |
06 |
|
0002B800h |
06 |
05 |
06 |
|
0003D000h |
06 |
05 |
03 |
|
00047800h |
06 |
05 |
03 |
|
0004B000h |
06 |
05 |
00 |
|
0004E800h |
06 |
05 |
02 |
|
00052000h |
06 |
05 |
01 |
|
00055800h |
06 |
05 |
01 |
|
00059000h |
06 |
05 |
01 |
|
0005C800h |
06 |
05 |
06 |
|
00063800h |
06 |
05 |
04 |
|
00067000h |
06 |
05 |
02 |
|
0007C000h |
06 |
05 |
00 |
|
0007F800h |
06 |
05 |
04 |
|
00083000h |
06 |
05 |
01 |
|
000AD000h |
06 |
05 |
01 |
|
000B0800h |
06 |
05 |
05 |
|
000B4000h |
06 |
05 |
02 |
|
000B7800h |
06 |
05 |
06 |
|
000BB000h |
06 |
05 |
02 |
|
000BE800h |
06 |
05 |
04 |
|
000C2000h |
06 |
05 |
04 |
|
000D7000h |
06 |
05 |
00 |
|
000DA800h |
06 |
05 |
00 |
|
000DE000h |
06 |
05 |
05 |
|
000E1800h |
06 |
05 |
00 |
|
000E5000h |
06 |
05 |
02 |
|
000EC000h |
06 |
05 |
02 |
|
000EF800h |
06 |
05 |
05 |
|
00101000h |
06 |
05 |
05 |
|
00104800h |
06 |
05 |
02 |
|
0010B800h |
06 |
05 |
03 |
|
0010F000h |
06 |
05 |
02 |
|
00112800h |
06 |
05 |
00 |
|
00116000h |
06 |
05 |
04 |
|
00119800h |
06 |
05 |
06 |
|
0011D000h |
06 |
05 |
04 |
|
00127800h |
06 |
05 |
06 |
|
00132000h |
06 |
05 |
00 |
|
02416000h |
06 |
05 |
02 |
|
0241D000h |
06 |
05 |
04 |
|
02420800h |
06 |
05 |
03 |
|
03C1F000h |
06 |
05 |
06 |
|
03F94800h |
06 |
05 |
06 |
|
0855C800h |
06 |
05 |
02 |
|
0AFB0800h |
06 |
05 |
01 |
|
0BB30000h |
06 |
05 |
01 |
|
0CD3C000h |
06 |
05 |
06 |
|
0CD5B800h |
06 |
05 |
06 |
|
0EB49000h |
06 |
05 |
02 |
|
0002C000h |
09 |
02 |
03 |
|
0003D800h |
09 |
02 |
00 |
|
00041000h |
09 |
02 |
05 |
|
00044800h |
09 |
02 |
04 |
|
00048000h |
09 |
02 |
01 |
|
0004B800h |
09 |
02 |
04 |
|
0004F000h |
09 |
02 |
06 |
|
00052800h |
09 |
02 |
03 |
|
00056000h |
09 |
02 |
05 |
|
00059800h |
09 |
02 |
06 |
|
0005D000h |
09 |
02 |
06 |
|
00064000h |
09 |
02 |
04 |
|
00067800h |
09 |
02 |
06 |
|
0007C800h |
09 |
02 |
03 |
|
00080000h |
09 |
02 |
05 |
|
00083800h |
09 |
02 |
04 |
|
0009C000h |
09 |
02 |
04 |
|
000AD800h |
09 |
02 |
05 |
|
000B1000h |
09 |
02 |
01 |
|
000B4800h |
09 |
02 |
04 |
|
000B8000h |
09 |
02 |
00 |
|
000BB800h |
09 |
02 |
01 |
|
000BF000h |
09 |
02 |
00 |
|
000C2800h |
09 |
02 |
02 |
|
000D4000h |
09 |
02 |
00 |
|
000D7800h |
09 |
02 |
06 |
|
000DB000h |
09 |
02 |
06 |
|
000DE800h |
09 |
02 |
05 |
|
000E2000h |
09 |
02 |
06 |
|
000E5800h |
09 |
02 |
01 |
|
000E9000h |
09 |
02 |
03 |
|
000EC800h |
09 |
02 |
03 |
|
00101800h |
09 |
02 |
04 |
|
00105000h |
09 |
02 |
03 |
|
00108800h |
09 |
02 |
05 |
|
0010C000h |
09 |
02 |
02 |
|
0010F800h |
09 |
02 |
02 |
|
00113000h |
09 |
02 |
02 |
|
00116800h |
09 |
02 |
01 |
|
0011A000h |
09 |
02 |
06 |
|
0011D800h |
09 |
02 |
03 |
|
02413000h |
09 |
02 |
04 |
|
0241A000h |
09 |
02 |
00 |
|
02421000h |
09 |
02 |
02 |
|
02424800h |
09 |
02 |
05 |
|
02428000h |
09 |
02 |
04 |
|
03C2A000h |
09 |
02 |
05 |
|
03E61000h |
09 |
02 |
05 |
|
05B5D000h |
09 |
02 |
01 |
|
07D53000h |
09 |
02 |
01 |
|
0B9D6000h |
09 |
02 |
02 |
|
0BA31000h |
09 |
02 |
01 |
|
0E1D3800h |
09 |
02 |
03 |
|
0E5A4000h |
09 |
02 |
04 |
|
0ED5A000h |
09 |
02 |
06 |
|
0002C800h |
0B |
06 |
01 |
|
0003E000h |
0B |
06 |
00 |
|
00048800h |
0B |
06 |
06 |
|
0004C000h |
0B |
06 |
00 |
|
0004F800h |
0B |
06 |
00 |
|
00053000h |
0B |
06 |
02 |
|
00056800h |
0B |
06 |
01 |
|
0005A000h |
0B |
06 |
05 |
|
00064800h |
0B |
06 |
03 |
|
00068000h |
0B |
06 |
03 |
|
0007D000h |
0B |
06 |
03 |
|
00084000h |
0B |
06 |
02 |
|
00095800h |
0B |
06 |
04 |
|
0009C800h |
0B |
06 |
05 |
|
000AE000h |
0B |
06 |
01 |
|
000B1800h |
0B |
06 |
01 |
|
000B5000h |
0B |
06 |
03 |
|
000B8800h |
0B |
06 |
01 |
|
000BC000h |
0B |
06 |
03 |
|
000BF800h |
0B |
06 |
01 |
|
000C3000h |
0B |
06 |
04 |
|
000D4800h |
0B |
06 |
01 |
|
000D8000h |
0B |
06 |
01 |
|
000DB800h |
0B |
06 |
00 |
|
000DF000h |
0B |
06 |
05 |
|
000E2800h |
0B |
06 |
06 |
|
000E6000h |
0B |
06 |
03 |
|
000E9800h |
0B |
06 |
06 |
|
000ED000h |
0B |
06 |
06 |
|
00105800h |
0B |
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