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bmmlst310
How do I cheat?
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Joined: 22 Sep 2023
Posts: 8
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 Posted: Fri Mar 08, 2024 11:03 am Post subject: Confusion about Teleport Hack |
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Hello. I made a TP Hack and it worked. But I've two questions about memory alloc.
Here's the original code:
| Code: |
[ENABLE]
aobscanmodule(INJECT,Eldritch.exe,F3 0F 10 70 10 F3 0F 10)
alloc(newmem,$1000,INJECT)
alloc(coord,$40)
label(code)
label(return)
label(xPos)
label(yPos)
label(zPos)
label(eSave)
label(eLoad)
label(save)
label(load)
label(xAxis)
coord:
xPos:
dd 0
zPos:
dd 0
yPos:
dd 0
eSave:
dd 0
eLoad:
dd 0
xAxis:
dd 0
newmem:
mov [xAxis],rax
cmp [eSave],1
je save
cmp [eLoad],1
je load
jmp code
save:
mov [eSave],0
push rbx
mov rbx,[rax+10]
mov [xPos],rbx
mov rbx,[rax+14]
mov [zPos],rbx
mov rbx,[rax+18]
mov [yPos],rbx
pop rbx
jmp code
load:
mov [eLoad],0
push rbx
mov rbx,[xPos]
mov [rax+10],rbx
mov rbx,[zPos]
mov [rax+14],rbx
mov rbx,[yPos]
mov [rax+18],rbx
pop rbx
jmp code
code:
movss xmm6,[rax+10]
jmp return
INJECT:
jmp newmem
return:
registersymbol(INJECT)
registersymbol(eSave)
registersymbol(eLoad)
registersymbol(xPos)
registersymbol(yPos)
registersymbol(zPos)
registersymbol(xAxis)
[DISABLE]
INJECT:
db F3 0F 10 70 10
unregistersymbol(INJECT)
unregistersymbol(eSave)
unregistersymbol(eLoad)
unregistersymbol(xPos)
unregistersymbol(yPos)
unregistersymbol(zPos)
unregistersymbol(xAxis)
dealloc(newmem)
dealloc(coord)
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Q1: When I save the x,y,z position, the eSave value always goes from 1 to a huge number. The eLoad value never works like that(just 0 or 1). Why is that?
Q2: When I change my alloc coord memory blocks's order(xPos-zPos-yPos → xPos-yPos-zPos), the zPos value will be recorded wrong and always a small float(-2.5~2.5).
Please forgive me for my lack of proficiency in English and CE skills. And thanks for answering.
| Description: |
| x/yPos memories record the values correctly, but the zPos is wrong. |
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| Filesize: |
17.74 KB |
| Viewed: |
597 Time(s) |
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| Description: |
| Here you can see the x/z/yPos memories record the values correctly. |
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| Filesize: |
17.25 KB |
| Viewed: |
597 Time(s) |
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++METHOS
I post too much
![]() Reputation: 92
Joined: 29 Oct 2010
Posts: 4197
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| Posted: Fri Mar 08, 2024 12:54 pm Post subject: |
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| You must consider value types and sizes, especially when working with 64bit.
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ParkourPenguin
I post too much
 Reputation: 140
Joined: 06 Jul 2014
Posts: 4307
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| Posted: Fri Mar 08, 2024 1:50 pm Post subject: |
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dd = declare doubleword (4 byte data)
dq = declare quadword (8 byte data)
rax, rbx, etc. are 8 byte data
`mov [eSave],0` - the data size here is ambiguous. I think CE defaults to 4-byte data, but you should use `mov dword ptr [eSave],0` for documentation purposes anyway.
It looks like you want xPos, yPos, zPos to be floats. Floats are 4 bytes in size. Use eax, ebx, etc. instead of rax, rbx, etc.
If you use ebx, keep `push rbx` / `pop rbx`. It's important to back up and restore the entire register even if you only use part of it.
_________________
I don't know where I'm going, but I'll figure it out when I get there. |
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bmmlst310
How do I cheat?
![]() Reputation: 0
Joined: 22 Sep 2023
Posts: 8
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| Posted: Sat Mar 09, 2024 2:12 am Post subject: |
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| ParkourPenguin wrote: | dd = declare doubleword (4 byte data)
dq = declare quadword (8 byte data)
rax, rbx, etc. are 8 byte data
`mov [eSave],0` - the data size here is ambiguous. I think CE defaults to 4-byte data, but you should use `mov dword ptr [eSave],0` for documentation purposes anyway.
It looks like you want xPos, yPos, zPos to be floats. Floats are 4 bytes in size. Use eax, ebx, etc. instead of rax, rbx, etc.
If you use ebx, keep `push rbx` / `pop rbx`. It's important to back up and restore the entire register even if you only use part of it. |
I revised the code according to your advice and then the above two questions were addressed. Thanks!
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