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AA beginner look for help.

 
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Montycarlo
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Joined: 10 Jan 2007
Posts: 124
PostPosted: Fri Mar 21, 2008 12:04 am    Post subject: AA beginner look for help. Reply with quote
Hey,

Today I wanted to start learning some AA, and stuff that associates with it.
So, I took the CE tutorial, and got up to the bit with multiple pointers. I couldn't be bothered learning them, and I thought I could experiment with what I had learned. So, I opened up Minesweeper, targetted it, and then found the addresses for the Flag count and the timer. Easy.

Then I tried injecting something to each.
The Flag count:
Code:
alloc(newmem,2048) //2kb should be enough
label(returnhere)
label(originalcode)
label(exit)

0100346E:
jmp newmem
nop
returnhere:

newmem: //this is allocated memory, you have read,write,execute access
add [01005194],10


originalcode:
//add [01005194],eax

exit:
jmp returnhere


Which adds 10 to the flag count every time you use one, so you have infinite, really.

The Timer:
Code:
alloc(newmem,2048) //2kb should be enough
label(returnhere)
label(originalcode)
label(exit)

01002FF5:
jmp newmem
nop
returnhere:

newmem: //this is allocated memory, you have read,write,execute access
dec [0100579c]


originalcode:
//inc [0100579c]

exit:
jmp returnhere


Which would decrease the timer instead of adding to it.

So to check on something, I needed to make the original code a comment so the new code I inputted would actualy work? Or doesnt the originalcode work when you inject something?

1 last thing:
I've been reading samuri25404's AA tutorial and ive come down to 'Label'.
Here's his code:
Code:
label(AutoAssembler)
label(Continue)
label(SayWhat)

AutoAssembler:
mov eax,02
cmp eax,03
jne Continue
je SayWhat

His explination of it was:
Quote:
What it does is allows the variable that you "label" to be used in your script


So, it labels a variable for you. But he hasn't specified what variable or anything, just named something that doesn't exist to 'AutoAssembler' or 'Continue' and 'Saywhat'.

Am I missing something?

Any help is greatly appreciated.
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Dark Byte
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Joined: 09 May 2003
Posts: 25974
Location: The netherlands
PostPosted: Fri Mar 21, 2008 7:02 am    Post subject: Reply with quote
samuri25404's script you posted here is incomplete and will not function properly (even though it might execute)

here's how the AA algorithm does it:

Code:

alloc(newmem,2048) //2kb should be enough

Create a variable newmem that gets a specific address

Code:

label(returnhere)
label(originalcode)
label(exit)

Tell the autoassembler to expect a variable definition named returnhere, originalcode and exit

Code:

01002FF5:

Set the current code write pointer to address 01002ff5

Code:

jmp newmem
nop

Assemble this code at address 01002ff5 and further and increase the current write pointer

Code:

returnhere:

Variable definition, returnhere gets the value of the current write pointer

Code:

newmem: //this is allocated memory, you have read,write,execute access

Not a label but a alloc, meaning, change the current write pointer to the allocated memory

Code:

dec [0100579c]

Write at the current write pointer this code and increase the write pointer with this size

Code:

originalcode:

Variable definition, originalcode gets here the address of the current write pointer

Code:

//inc [0100579c]

Ignored

Code:

exit:

Variable definition, exit gets here the address of the current write pointer

Code:

jmp returnhere

jmp to the address returnhere gotassemble this instruction at the current write pointer. Set returnhere to the address it got from the variable definition
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Montycarlo
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Joined: 10 Jan 2007
Posts: 124
PostPosted: Sun Mar 23, 2008 1:32 am    Post subject: Thanks Darkbyte! :D Reply with quote
Thanks for that.

It's a real help knowing how it goes through and does things, and you've explained it in a very informative way, however, i'm going to have to look up 'nop' and learn some more about it.

Thanks again!

-I've got my minesweeper scripts working now!
Backwards Timer:
Code:

[enable]
//Script by Montycarlo! :D
alloc(newmem,2048) //2kb should be enough
label(returnhere)
label(originalcode)
label(exit)

01002FF5:
jmp newmem
nop
returnhere:

newmem: //this is allocated memory, you have read,write,execute access
//place your code here


originalcode:
dec [0100579c]

exit:
jmp returnhere


[disable]
dealloc(newmem)
01002FF5:
inc [0100579c]

Infinite Flags:
Code:

[enable]
//Script by Montycarlo! :D
alloc(newmem,2048) //2kb should be enough
label(returnhere)
label(originalcode)
label(exit)

0100346E:
jmp newmem
nop
returnhere:

newmem: //this is allocated memory, you have read,write,execute access
add eax,A


originalcode:
add [01005194],eax

exit:
jmp returnhere
[Disable]
dealloc(newmem)
0100346E:
add [01005194],eax


I played around with the injection, looked at some scripts from other people and eventruly compiled my own. Have I got any errors in my script?

Thanks again!
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24653187
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PostPosted: Tue Mar 25, 2008 11:17 pm    Post subject: Re: Thanks Darkbyte! :D Reply with quote
Montycarlo wrote:
Thanks for that.

It's a real help knowing how it goes through and does things, and you've explained it in a very informative way, however, i'm going to have to look up 'nop' and learn some more about it.

Thanks again!

-I've got my minesweeper scripts working now!
Backwards Timer:
Code:

[enable]
//Script by Montycarlo! :D
alloc(newmem,2048) //2kb should be enough
label(returnhere)
label(originalcode)
label(exit)

01002FF5:
jmp newmem
nop
returnhere:

newmem: //this is allocated memory, you have read,write,execute access
//place your code here


originalcode:
dec [0100579c]

exit:
jmp returnhere


[disable]
dealloc(newmem)
01002FF5:
inc [0100579c]

Infinite Flags:
Code:

[enable]
//Script by Montycarlo! :D
alloc(newmem,2048) //2kb should be enough
label(returnhere)
label(originalcode)
label(exit)

0100346E:
jmp newmem
nop
returnhere:

newmem: //this is allocated memory, you have read,write,execute access
add eax,A


originalcode:
add [01005194],eax

exit:
jmp returnhere
[Disable]
dealloc(newmem)
0100346E:
add [01005194],eax


I played around with the injection, looked at some scripts from other people and eventruly compiled my own. Have I got any errors in my script?

Thanks again!


oh yeah, flags isn't really important for minefield, because it doesn't count
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asaface123
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PostPosted: Sun Mar 30, 2008 7:33 pm    Post subject: Ritzmann Hufano Reply with quote
nice one ^^
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Labyrnth
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PostPosted: Sun Mar 30, 2008 7:40 pm    Post subject: Re: Thanks Darkbyte! :D Reply with quote
24653187 wrote:

oh yeah, flags isn't really important for minefield, because it doesn't count


Doesnt matter he is learning how to use the AA scripting. Pay attention, and read the topic.
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samuri25404
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PostPosted: Fri Apr 04, 2008 6:26 pm    Post subject: Reply with quote
@DarkByte:

Yes, thanks for telling him that. I know that it's wrong, and I've known for a while; I wrote it when I didn't know as much as I know now, and at the moment I'm just too lazy to fix it.

Eventually (and probably soon, if boredom consumes me), I'll go back and fix it.
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