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kurama371
How do I cheat?
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 Posted: Tue Jun 14, 2022 10:54 am Post subject: Code filter causing game to crash |
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the game im working on is 32 bit so i have to load the address list from disassembler and fix the broken addresses myself as mentioned in 2 diff threads i found here about crashes (cant post links), tho how would i actually find the correct address in the list?
I saved the addresslist to a file and all the addresses are in mygame.exe however when i set the debug to break on exception and hit start, the memory viewer opens a location in a dll and not the game executable
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Dark Byte
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| Posted: Tue Jun 14, 2022 9:33 pm Post subject: |
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use the option to break on unexpected exceptions.
with some luck it'll show you an instruction with an invalid cc in it and then remove that from the list and restart the game and try again
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kurama371
How do I cheat?
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Joined: 02 Aug 2018
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| Posted: Wed Jun 15, 2022 5:13 am Post subject: |
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| Dark Byte wrote: | use the option to break on unexpected exceptions.
with some luck it'll show you an instruction with an invalid cc in it and then remove that from the list and restart the game and try again |
Exactly that is the problem, when it breaks at unexpected exceptions, the disassembler opens an address that is not in the module i selected (being the game's .exe). eg. the saved list that was loaded from disassembler are all in mygame.exe, and the break on unhandled exception opens the disassembler somewhere in somedll.dll, which are not included in the list.
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Dark Byte
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| Posted: Wed Jun 15, 2022 5:41 am Post subject: |
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check the stacktrace
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kurama371
How do I cheat?
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Joined: 02 Aug 2018
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| Posted: Wed Jun 15, 2022 8:47 am Post subject: |
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| Dark Byte wrote: | | check the stacktrace |
looking through the stacktrace in a few cases brought me to addresses of the game's exe, though im stuck at a point where i went through all the addresses in the stacktrace and even got rid of all the function calls that are even remotely close to the one shown in the stacktrace, but it still gets an exception at the same place (memory viewer shows "C000001D EXCEPTION_ILLEGAL_INSTRUCTION) opcode being "lea eax,[edi*4+0000000]"
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Dark Byte
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| Posted: Wed Jun 15, 2022 9:12 am Post subject: |
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look anywhere in the game's .exe for a misplaced CC byte (likely near the last call, but it's of course possible it affected a jump destination which makes it a lot more difficult)
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kurama371
How do I cheat?
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Joined: 02 Aug 2018
Posts: 4
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| Posted: Wed Jun 15, 2022 9:46 am Post subject: |
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| Dark Byte wrote: | | look anywhere in the game's .exe for a misplaced CC byte (likely near the last call, but it's of course possible it affected a jump destination which makes it a lot more difficult) |
i did find CC bytes at the bottom of the stacktrace in a dll but not in the game exe being
call
int3 (CC)
push 30
the stacktrace at the top for example is a
mov [00000000],00000000
with a jump being the instruction before, how do i handle that
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