Mask fix about diggleshdmod HOT 6 OPEN

Hi @cech12 !

1. As I know, old version of the game is packed using UPX. If you want to support old versions, you need to unpack .exe first. There will be c7 44 24 18 00 10 00 00 byte sequence.
2. In my opinion, the generic way to find patch place in .exe is to:
   1. Find string literal "ground/Msk_%c%c%c%c01.tga".
   2. There will be one direct reference to this string from function, that mixes landscape tiles. Also in this function will be direct references to string literals "ground/Gnd_%c%c%c.tga" and "ground/Gnd_%c%02d.tga".
   3. In this function must be only one 0x1000 value which is what we need.

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I need some guidance

@cech12 please send me the updated .exe file.
I will try to write more detailed instructions and sample code.
You use C# for game patching/modding, are I'm right?

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@cech12 here is small script written in Python 3 + pefile library:
https://gist.github.com/aspadm/49428db7e171bce092854ecab83a01c1
For this two files address will be the same: 0x4cd3a1 (5034913).

Example of script output:

Found string A "ground/Msk_%c%c%c%c01.tga" at VA 0x724898
Found string B "ground/Gnd_%c%c%c.tga" at VA 0x7248b4
Found string C "ground/Gnd_%c%02d.tga" at VA 0x7248cc
Found XREF to string A at VA 0x4cd17f
Found XREF to string B at VA 0x4cd271 and 0x4cdad0
Found XREF to string C at VA 0x4cd2e9
Keep XREF to string B from VA 0x4cd271
Found 177 places with b'\x00\x10\x00\x00'
Finally chose value place as VA 0x4cd3a1

Replace 4 bytes at position 0x4cd3a1 (5034913) in file "Diggles_gog.exe"

Script also trying to detect UPX packing and must work with old game version (as example, Wiggles version from 2000).

If you'll be rewrite this to C#, you can take a look at PeNet library as replace of pefile.

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Unfortunately, the game was updated and the sequence was changed.
I never hacked/changed an exe file on byte level. I have found the string literals on byte level but they are located at another position as the code/bytes I want to change. But I don't know how to get the references of these strings.

I think, I need some guidance. xD

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That would be really nice, thanks a lot! :D
Yes, I am using C#, but I can also convert code of other languages to C# ;)

Diggles-gog-exe.zip

Diggles-steam-exe.zip

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Thanks a lot! I will look i to this :)

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