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beagle
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Joined: 27 Aug 2014
Posts: 36
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 Posted: Tue Feb 07, 2017 8:52 pm Post subject: Confused about readbytes and readstring |
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I'm trying to get a string from 4 bytes which correspond to an address that i can find using AOBScan, but i can't figure out how to get Lua to read the string at that address.
| Code: |
-- mov cl,[eax+A676CF8] -- A676CF8 is the address that holds the string i want.
AOBtarget = AOBScan("?? ?? ?? ?? 88 4C 04 24 83 C0 01 84 C9 75 EF 8D 4C 24 24 51")
-- ?? ?? ?? ?? corresponds to A676CF8 in mov cl,[eax+A676CF8]
if AOBtarget ~= nil then
target2 = readBytes(AOBtarget[0], 4, true)
-- set target2 as the first 4 bytes found at the address of the AOBScan, which should turn it into the target address
--writeBytes(testaddress, target2)
-- writes F8 C6 A7 00 to the test address so i know that at least works
target3 = readString(target2, 16, false)
-- read the string at the target address
--print(tostring(target3)) -- returns nil
end
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Clearly i'm doing something wrong with target3 because it is returning nil when it should be reading the string at the target address.
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Zanzer
I post too much
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Joined: 09 Jun 2013
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| Posted: Tue Feb 07, 2017 8:58 pm Post subject: |
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Sounds like you're trying to use it as a pointer.
Use readPointer() not readBytes() | Code: | target2 = readPointer(AOBtarget[0])
target3 = readString(target2, 16, false)
print(target3) |
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beagle
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| Posted: Tue Feb 07, 2017 9:02 pm Post subject: |
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works flawlessly!
thank you very much :)
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beagle
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Joined: 27 Aug 2014
Posts: 36
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| Posted: Sat Feb 11, 2017 10:23 pm Post subject: |
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How do i readPointer with AutoAssemble?
I'm trying to get the integer values stored in test.exe+672338, from AoBScan.
test.exe+4d330 - 8B 15 3823A700 - mov edx,[test.exe+672338]
Here's what im trying:
| Code: |
1. aobscan to find test.exe+4d330
2.
test:
readmem(test.exe+4d330+2,4) // set the value of test to the address 00a72338
3.
mov ecx,[test] // move the value at the target address into ecx
mov [store],ecx //put the value in "store"
4. result
test = A72338
store = A72338 // it's supposed to be the value at address A72338
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The problem is "store" just ends up with the address, not the value at the address. I feel like i am making a very simple mistake.
The same happens if i use readmem twice and then try and store it, like:
| Code: |
test:
readmem(test.exe+4d330+2,4)
test1:
readmem(test,4)
mov ecx,[test1]
mov [store],ecx
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*Edit: Ah i got it, i knew i was missing something simple, this seems to work:
test:
readmem(test.exe+4d330+2,4)
test1:
mov ecx,[test]
mov eax,ecx
mov ecx,[eax]
mov [store],ecx
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Zanzer
I post too much
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Joined: 09 Jun 2013
Posts: 3278
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| Posted: Sat Feb 11, 2017 11:34 pm Post subject: |
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| Code: | aobscan(myvar,8B 15 ?? ?? ?? ?? {more bytes for uniqueness})
mov ecx,[myvar+2] |
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beagle
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Joined: 27 Aug 2014
Posts: 36
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| Posted: Sun Feb 12, 2017 2:03 am Post subject: |
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| Zanzer wrote: | | Code: | aobscan(myvar,8B 15 ?? ?? ?? ?? {more bytes for uniqueness})
mov ecx,[myvar+2] |
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Ah i got it after a while, thanks :) I ended up using readmem instead of [myvar+2] because it kept giving me an error. I'll have to go back and look at it some time.
To get it to work i had to make it:
1. aobscan(myvar,8B 15 ?? etc) -> Find Address(A)
2. mov ecx,[myvar+2] -> Value of Address(A) (which is address B) to ecx
3. mov eax, [ecx] -> Value of Address(B) to eax
4. mov [x],eax -> Value of Address(B) to x
i hate pointers lol
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