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Script injection is jumping to inaccessible memory

 
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violaboy13
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PostPosted: Sun Dec 17, 2017 4:06 pm    Post subject: Script injection is jumping to inaccessible memory Reply with quote

After updating to Windows 10 64bit Fall Creator's Update (1709) we are having issues over at footballidiots with Madden 08. For some reason one of my code injections is jumping into inaccessible memory, which causes a crash. See attached photos for proof of what I'm talking about. I'm guessing that this a weird problem between CE and Windows 10 update 1709. Is there any way around this problem? Would putting an address into the 3rd parameter for alloc force the jmp to a different address? And if so what address should I use?


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OldCheatEngineUser
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PostPosted: Sun Dec 17, 2017 4:31 pm    Post subject: Reply with quote

jumping to "F3", seems CE is getting sick lol.

try the 3rd parameter, use the same address you are hooking.

in your case:

global - OR - alloc(symbol,$100,"mainapp.exe"+11105D)

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Dark Byte
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PostPosted: Sun Dec 17, 2017 5:08 pm    Post subject: Reply with quote

are you using kernelmode memory access options ?
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violaboy13
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PostPosted: Sun Dec 17, 2017 7:09 pm    Post subject: Reply with quote

Dark Byte wrote:
are you using kernelmode memory access options ?


Not to my knowledge. The kernel tools is grayed out, I'm not using any CE kernel routines, and I'm not using DBVM.

Using the 3rd parameter with alloc or globalloc didn't work either. I ended up changing the address that I'm injecting on to 1110D9 and that worked without any issue. So, I'm not sure what the problem is with the code injection with that one address.
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Dark Byte
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PostPosted: Mon Dec 18, 2017 7:17 am    Post subject: Reply with quote

is this build a pre-release build of windows ? (insider builds tend to have weird memory issues)

anyhow, do
Code:

alloc(something,1000)
registersymbol(something)

something:
db 90
db 90
db 90

and check where something ends up

also check your script, don't name your labels to existing windows symbols

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violaboy13
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PostPosted: Mon Dec 18, 2017 12:22 pm    Post subject: Reply with quote

OK, I figured this out; it was not a CE problem. Rather I had address 1110D6 being written to from the GUI so it was messing up the jump. Sorry I didn't figure this out earlier and waste your time. Thanks for you help.
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