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Help with db on Auto Assembler

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Reclaimer Shawn
Advanced Cheater

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Joined: 09 Jun 2015
Posts: 77

Posted: Sat Apr 25, 2020 12:02 pm Post subject: Help with db on Auto Assembler

So, this is a script that I'll be using:

Code:

[ENABLE]
aobscan(JotaroAddr, 63 3E ?? ?? ?? FF FF FF FF 00 00 00)
label(_JotaroAddr)
registersymbol(_JotaroAddr)

JotaroAddr:
_JotaroAddr:

[DISABLE]
JotaroAddr:
_JotaroAddr:
db 63 3E 73 CF 3D FF FF FF FF 00 00 01
unregistersymbol(_JotaroAddr)

In the above code, I make the signature different by setting the last 00 to 01 in the disable script. I do this because the game actually keeps several copies of the same data, so I just enable and disable the script until I get to the copy that actually affects the game. The problem is that I'd like to leave the other values untouched, as the three bytes after 3E can vary. I'd just like to set the last byte to 01 and not even touch the rest of the signature. Thanks for reading!

ParkourPenguin
I post too much

Reputation: 140

Joined: 06 Jul 2014
Posts: 4309

Posted: Sat Apr 25, 2020 12:41 pm Post subject:

Either add more bytes to the signature or pick a different method for finding an address that isn't terrible (i.e. injection copy and/or pointers). _________________ I don't know where I'm going, but I'll figure it out when I get there.

Reclaimer Shawn
Advanced Cheater

Reputation: 0

Joined: 09 Jun 2015
Posts: 77

Posted: Sat Apr 25, 2020 1:05 pm Post subject:

ParkourPenguin wrote:

Either add more bytes to the signature or pick a different method for finding an address that isn't terrible (i.e. injection copy and/or pointers).

I can add bytes behind the value, but I'm not sure if it'll cause crashes or not. I'll try that. I would work with an injection copy, but I'm dealing with a MEM_MAPPED area of an emulator, so I'm not able to get proper x86 instructions. Bytes behind the value aren't unique either, as they're the same as the other copies, so writing a different byte is needed to invalid each signature.

panraven
Grandmaster Cheater

Reputation: 55

Joined: 01 Oct 2008
Posts: 943

Posted: Sat Apr 25, 2020 1:33 pm Post subject:

May try this method, it need not over write memory.
Make a script record

Code:

[ENABLE]
label(AobSearchStart)
1:
AobSearchStart:
registersymbol(AobSearchStart)

[DISABLE]
unregistersymbol(AobSearchStart)

Then make another record for your search using aobscanRegion, with
start address : AobSearchStart
end address : -1 (may think as short cut for max address, or if not work try 7f...ff)

Code:

[ENABLE]
aobscanRegion(JotaroAddr, AobSearchStart, -1, 63 3E ?? ?? ?? FF FF FF FF 00 00 00)
registersymbol(JotaroAddr) /// not don't need auxiliary symbol _JotaroAddr

[DISABLE]
unregistersymbol(AobSearchStart)
label(AobSearchStart)
JotaroAddr+1:
AobSearchStart:
registersymbol(AobSearchStart)
unregistersymbol(JotaroAddr)

The idea is to update the beginning address of a new search on [DISABLE],
the first code/record is need to initial/reset AobSearchStart to 1.
_________________

- Retarded.

Reclaimer Shawn
Advanced Cheater

Reputation: 0

Joined: 09 Jun 2015
Posts: 77

Posted: Sat Apr 25, 2020 4:08 pm Post subject:

panraven wrote:

Code:

JotaroAddr+1:

I didn't use your code, but your code gave me an idea. I know it seems intuitive, but I didn't know you could perform math with the AOB Label.

This did what I needed to do:

Code:

_JotaroAddr+B:
db 01

Thanks for the help!

panraven
Grandmaster Cheater

Reputation: 55

Joined: 01 Oct 2008
Posts: 943

Posted: Sat Apr 25, 2020 10:35 pm Post subject:

Reclaimer dawnn wrote:

...
I didn't use your code, but your code gave me an idea. I know it seems intuitive, but I didn't know you could perform math with the AOB Label.
...

Not exactly perform math, it just can 'align' an undefined label with a defined address label, kind of an one-time-off assignment.
_________________

- Retarded.

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