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Gargule
How do I cheat?
![]() Reputation: 0
Joined: 27 Mar 2022
Posts: 2
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 Posted: Sun Mar 27, 2022 4:00 pm Post subject: [Autoassembler] I'm total idiot and don't know what to do |
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So, here's idea: i want game to crash exactly before character will receive fatal damage. I have an address of instruction that changes everyone's HP. Now i'm trying to understand how to check if HP that changed was Players HP and how to check if that damage was fatal.
There's code. (i lost my pointer to Player's HP and cannot find another right now, but even with the correct pointers game just crashes on script activation)
UPD: have a new pointer
| Code: |
[ENABLE]
define(bytes,89 91 EC 01 00 00)
define(inPoint,GameAssembly.dll+172d153)
assert(inPoint,bytes)
define(pointerStart,GameAssembly.dll+3CABB58)
alloc(newmem,$1000)
label(code)
label(return)
label(alive)
newmem:
code:
push rsi
mov rsi,pointerStart
mov rsi,[rsi+b8]
mov rsi,[rsi+20]
mov rsi,[rsi+2b0]
mov rsi,[rsi+1EC]
cmp [rcx+000001EC],rsi
pop rsi
jne alive //if isn't player
cmp edx,0
jne alive //if isn't dead
jmp 0 //We almost died. Crush
jmp return //just placeholder. Normally never executes
alive:
mov [rcx+000001EC],edx
jmp return
inPoint:
jmp newmem
return:
[DISABLE]
inPoint:
mov [rcx+000001EC],edx
dealloc(newmem)
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Also I want to know where and why my code is dumb.
And sorry if my english isn't good enough. Sadly i'm not native speaker.
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Dark Byte
Site Admin
 Reputation: 471
Joined: 09 May 2003
Posts: 25833
Location: The netherlands
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| Posted: Sun Mar 27, 2022 4:46 pm Post subject: |
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1:
the target is 64-bit, you're not using the 3th alloc parameter, and the jmp doesn't look like it's relocating 14 bytes
There is a very high chance this is going to crash
2: perhaps the pointer isn't always valid. try
| Code: |
...
push rsi
{$try}
mov rsi,pointerStart
mov rsi,[rsi+b8]
mov rsi,[rsi+20]
mov rsi,[rsi+2b0]
mov rsi,[rsi+1EC]
cmp [rcx+000001EC],rsi
pop rsi
jne alive //if isn't player
cmp edx,0
jne alive //if isn't dead
jmp 0 //We almost died. Crush
{$except}
//unreadable
pop rsi
jmp alive
alive:
...
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3: Perhaps you're dead but don't know it yet
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Gargule
How do I cheat?
![]() Reputation: 0
Joined: 27 Mar 2022
Posts: 2
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| Posted: Sun Mar 27, 2022 6:07 pm Post subject: |
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| Dark Byte wrote: | 1:
2: perhaps the pointer isn't always valid. try
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Thank you for helping.
I'm trying like this now and nothing crashes. Anyway at some point game process somewhy just skips part of the code.
| Code: |
code:
push rax
{$try}
mov rax,pointerStart //-------------------i was wrong here. This must be [pointerStart]
mov rax,[rax+8]
mov rax,[rax+2e0]
mov rax,[rax+28]----------- //it dies after this point
mov rax,[rax+660]
mov rax,[rax+118]
mov rax,[rax+30]
cmp rcx,rax
pop rax
jne alive //if isn't player
cmp edx,0
jne alive //if isn't dead
jmp 0 //We almost died. Crush
{$except}
//unreadable
nop
nop
pop rax --------------//and starts again exactly here
jmp alive
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nothing in between my markers do not react to breakpoints and idk what's going on.
UPD: i just fixed it. Thank you again. For the help and for the CE itself. ^^
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