[HELP] Yu gi oh 5D XBLA

[pureIso]

Hey

I am trying to make a mod tool for this game but I think it has a checksum. I have an offset and I am sure its a correct offset but every time I change anything the file is automatically corrupted.

@&H0 = 58 41 0A 03 00 23 9D 10 00 00 21 9D

on every file but I don't know if this is the checksum.

Here is 3 game saves Save Set (http://www.megaupload.com/?d=SCVSSMXA)

I just need to know the checksum and how to fix it. I am still learn so take it easy on me.

[DJ XHUNTER]

Yeah Game has a security

[JizzaBeez]

Hey

I am trying to make a mod tool for this game but I think it has a checksum. I have an offset and I am sure its a correct offset but every time I change anything the file is automatically corrupted.

@&H0 = 58 41 0A 03 00 23 9D 10 00 00 21 9D

on every file but I don't know if this is the checksum.

Here is 3 game saves Save Set (http://www.megaupload.com/?d=SCVSSMXA)

I just need to know the checksum and how to fix it. I am still learn so take it easy on me.

Those aren't checksums... A checksum would not be the same in every file. "58410A03" is the game's Title ID, "0000219D" is the File-Size.

[DJ XHUNTER]

Those aren't checksums... A checksum would not be the same in every file. "58410A03" is the game's Title ID, "0000219D" is the File-Size.

exactly........

[Renegade]

The game does have a CRC32 checksum though.

[pureIso]

Ok Thanks.

I have plenty of save and offset keeps changing @&HC and I can't seem to find any pattens

B13C1D05 00 00 00 01
7A04FBF0 00 00 00 02
---------------------
8A3C5B9C 00 00 00 03
3704305B 00 00 00 04
C73C9037 00 00 00 05
---------------------
8A3C5B9C 00 00 00 03
0B5C6FA0 00 00 00 04
EC7782B8 00 00 00 05
85542F7E 00 00 00 07
CBB39101 00 00 00 08
361C5134 00 00 00 09

[JizzaBeez]

The game does have a CRC32 checksum though.

It must be a custom one because I've tried Brute-Forcing 50+ different algos including CRC32 on the gamesave, or either I just didn't start at the right spot with the right digest...

[pureIso]

Looks like this game would be a pain in back side.

[pureIso]

Ok after hours upon hours of comparing files. This 2 set of files has all the cards in the game it also has the least replaced files I have come across so far. Here is the link if anyone want to try find the checksum which I am doing myself. Save Set (http://www.megaupload.com/?d=KU76ZBMQ)

[pureIso]

Using JizzaBeez and Algorithm Tool and data mining to search for static hex, which I presume would be the Length of the covered data.

-The CRC32 checksum is at (?)
-------------------------------------------
Posibilities
-------------------------------------------
-The Length of the covered data is at (38682) search(0000971A) -The data covered is at (344)
-The Length of the covered data is at (1) search(00000001) -The data covered is at (840)
-The Length of the covered data is at (2) search(00000002) -The data covered is at (844)
-The Length of the covered data is at (589239203) search(231f13a3) -The data covered is at (856)
-The Length of the covered data is at (2333968) search(00239D10) -The data covered is at (53256)

----------------------------------------------------------------------------
All the Algorithm I got back could not be found in the savegame.

[Renegade]

Just remember the check calculates until the EOF, Even the slightest change will damage the save, So just keep looking and studying the xex through IDA ;)

[pureIso]

Here is a link to the default.xex (http://www.megaupload.com/?d=7SGZ8216) if anyone wants to take a crack at it.

Pass :- thekrustykrabs
search for crc or savegame