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How to specify a static address + address offset in script?

 
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kaosnye
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Joined: 29 Apr 2014
Posts: 35
PostPosted: Tue Dec 13, 2022 6:53 pm    Post subject: How to specify a static address + address offset in script? Reply with quote
Hello.

I'm currently trying to use cheat engine to set up some very basic scripts for a PS2 game running on PCSX2.

I have two scripts currently, one which will store a user symbol for a base address.

Code:
[ENABLE]
alloc(pBase, 4096)

registersymbol(pBase)

pBase:
dq 258B7140000

[DISABLE]
dealloc(pBase)
unregistersymbol(pBase)


and the second that I'm having an issue with is trying get a script to modify an address utilizing that base address + the PS2 address (raw).


Code:
[ENABLE]

pBase + 0x204D8BB0: // <-- Unable to be processed?
//0x20394533218: <-- This will work if I comment out the above
  db 5

[DISABLE]

pBase + 0x204D8BB0:
//0x20394533218:
  db 3


If I set the pBase + aplOffset directly to the address I am trying to modify such as 0x258d7313217, then everything works fine. It seems I am unable to add addresses together in the assembler script?

The second script is a child of the first.

Any insight would be appreciated.
Thanks.

P.s., I manually search for the pBase address by subtracting a scanned address by the known address, and I'll figure out how to make that a pointer/aob at a later time.
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ParkourPenguin
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Joined: 06 Jul 2014
Posts: 4661
PostPosted: Tue Dec 13, 2022 8:36 pm    Post subject: This post has 1 review(s) Reply with quote
I'm not sure of what you're trying to do. Where did 0x20394533218 come from?

`pbase` is some address CE allocated.
`[pbase]` is the value stored at that address- i.e. the quadword 258B7140000.

Maybe `[pBase]+204D8BB0` is what you're looking for? It's definitely not 0x20394533218, though...
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kaosnye
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Joined: 29 Apr 2014
Posts: 35
PostPosted: Tue Dec 13, 2022 9:00 pm    Post subject: Reply with quote
Interestingly, I thought I had tried wrapping [pBase] but it didn't activate the script when I tried, perhaps something else was going on.

However, doing that was the solution, thanks.

The 0x20394533218 was a different pBase value + the offset (just kept for personal reference mostly)

Thanks!


Solution for reference:
Code:
[ENABLE]


[pBase] + 0x201D3218:
  db 5

[DISABLE]

[pBase] + 0x201D3218:
  db 3
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