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how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 12:48 am
by bazarach
as per title. below is the instruction that updates the minutes passed in the game im making a table for. how do i save the address of ecx+10 to my table?
i tried doing it using LEA and using MOV to store it into a symbol, but im getting the address for the allocated memory for _minutes and not for ecx+10. what am i doing wrong? is there another way to get the address?
Code: Select all
[ENABLE]
aobscan(minAddy,89 41 10 8D 45 D4) // should be unique
alloc(_minutes,04)
alloc(newmem,$1000)
registersymbol(_minutes)
label(code)
label(return)
newmem:
lea eax,[ecx+10] //calculate address
mov [_minutes],eax //store in symbol
code:
mov [ecx+10],eax
lea eax,[ebp-2C]
jmp return
minAddy:
jmp newmem
nop
return:
registersymbol(minAddy)
[DISABLE]
minAddy:
db 89 41 10 8D 45 D4
dealloc(_minutes)
unregistersymbol(_minutes)
unregistersymbol(minAddy)
dealloc(newmem)
Re: how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 2:59 am
by aSwedishMagyar
_minutes is a pointer. You need to setup your memory record as a pointer or de-reference it in the address bar (use brackets i.e. [_minutes])
Think of it this way:
_minutes is the address
when you do mov [_minutes],eax you are storing the value in eax at the memory location _minutes.
Re: how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 4:41 am
by bazarach
aSwedishMagyar wrote: ↑Fri Sep 23, 2022 2:59 am
You need to setup your memory record as a pointer
how do i do this?
haven't modified the script yet, but i tried changing the address to include brackets but i got zeroes instead. the address im looking for is the 25B93FFC or whatever it is for each run of the game.
cheat off
cheat on
Re: how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 4:54 am
by aSwedishMagyar
mov [ecx+10],eax should be before you overwrite eax with the effective address of ecx+10.
You can also try just writing ecx to _minutes and then setting the memory record as a pointer with an offset.
To do that, double-click on the address of your record and tick the checkbox for 'pointer'. Set the address to '_minutes' and the offset to '10'.
Re: how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 5:16 am
by bazarach
aSwedishMagyar wrote: ↑Fri Sep 23, 2022 4:54 am
You can also try just writing ecx to _minutes and then setting the memory record as a pointer with an offset.
To do that, double-click on the address of your record and tick the checkbox for 'pointer'. Set the address to '_minutes' and the offset to '10'.
somehow the value of ecx isnt being stored in _minutes. changed this part of the script and made the memory record a pointer with an offset of 10 and im getting 10 as an address. the timer in the game still works tho so the mov [ecx+10], eax still works.
Code: Select all
newmem:
//lea eax,[ecx+10]
mov [_minutes],ecx
code:
mov [ecx+10],eax
lea eax,[ebp-2C]
jmp return
Re: how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 5:47 am
by aSwedishMagyar
I guess my last questions are:
When does that instruction get run?
Can you set a break point on it?
Re: how do i save memorylocation from instruction to table?
Posted: Fri Sep 23, 2022 5:54 am
by bazarach
aSwedishMagyar wrote: ↑Fri Sep 23, 2022 5:47 am
I guess my last questions are:
When does that instruction get run?
Can you set a break point on it?
ecx is written to _minutes just before the game updates the minutes passed. anyway, i added a break and trace on the mov [_minutes],ecx instruction in the disassembler to check the value of ecx and it started working after that. i have a feeling it's just me being an idiot and not letting the game run unpaused long enough for the values to be updated properly.