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How do I find the parameter used in a function call?
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m_miro
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Joined: 31 Jul 2019
Posts: 19
PostPosted: Sun Aug 04, 2019 12:52 am    Post subject: Reply with quote
You're right fopen/fopen_s are not used instead CreateFileA and ReadFile are, placing breakpoints on those functions do result in breaks.
But I looked at the disassembly in ghidra and I do see uses of both fopen and CreateFileA.
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m_miro
Newbie cheater
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Joined: 31 Jul 2019
Posts: 19
PostPosted: Tue Aug 06, 2019 10:35 am    Post subject: Reply with quote
I am able to find the parameters of a function call now, but I've run into another problem.

There's a lot of files that are being read with the function ReadFile during the start of the game, so I wrote a lua script to automate finding the file I want so I don't have to read at each breakpoint.

Here is the script
Code:
debug_removeBreakpoint("ReadFile")
debug_setBreakpoint("ReadFile")
debug_continueFromBreakpoint("co_run")

function debugger_onBreakpoint()
stackValue = readInteger(ESP+0xc)
if(stackValue == 40960)then
speak("Match Found for hex value "..string.format('%x',stackValue))
else
speak("no dice ")
debug_continueFromBreakpoint("co_run")
doKeyPress(13)
end
end


The problem I'm having is the game needs focus or it pauses and when the script runs a form pops up that says "Sh*t Happened" and requires me to close the form before the scripts runs again shifting the focus away form the game.

I tried fixing it by simulating an enter key press, but the focus is still on cheat engine instead of the game. What causes this form to popup, is there a way to disable it and is there a way to shift focus back to the game if I can't disable it?
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