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potentialunexplored
How do I cheat?
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Joined: 06 Mar 2023
Posts: 8
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 Posted: Sat Nov 02, 2024 1:08 pm Post subject: Writing a string into a register |
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Hi, I'm not well versed in Lua at all so forgive me if this is an obvious question.
Here's a script that writes a string into a specific address (2A639EA8). That's the address stored in ecx and it changes every time, so obviously not very convenient.
How do I write it into ecx directly?
| Code: | [ENABLE]
{$lua}
local str = "teststring"
local bytes = {}
for i = 1, #str do
local codepoint = string.byte(str:sub(i, i))
if codepoint < 128 then
table.insert(bytes, codepoint)
elseif codepoint < 2048 then
table.insert(bytes, 0xC0 + math.floor(codepoint / 64))
table.insert(bytes, 0x80 + (codepoint % 64))
else
table.insert(bytes, 0xE0 + math.floor(codepoint / 4096))
table.insert(bytes, 0x80 + math.floor((codepoint % 4096) / 64))
table.insert(bytes, 0x80 + (codepoint % 64))
end
end
writeBytes(0x2A639EA8, bytes)
{$asm}
aobscanmodule(INJECT,Game.dll,8D 41 02 89 44 24 14 8D 64) // should be unique
alloc(newmem,$1000)
label(code)
label(return)
newmem:
code:
lea eax,[ecx+02]
mov [esp+14],eax
jmp return
INJECT:
jmp newmem
nop 2
return:
registersymbol(INJECT)
[DISABLE]
//code from here till the end of the code will be used to disable the cheat
INJECT:
db 8D 41 02 89 44 24 14
unregistersymbol(INJECT)
dealloc(newmem) |
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xxhehe
Expert Cheater
![]() Reputation: 0
Joined: 11 Mar 2015
Posts: 154
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| Posted: Thu Nov 14, 2024 7:40 pm Post subject: Re: Writing a string into a register |
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| potentialunexplored wrote: | Hi, I'm not well versed in Lua at all so forgive me if this is an obvious question.
Here's a script that writes a string into a specific address (2A639EA8). That's the address stored in ecx and it changes every time, so obviously not very convenient.
How do I write it into ecx directly?
| Code: | [ENABLE]
{$lua}
local str = "teststring"
local bytes = {}
for i = 1, #str do
local codepoint = string.byte(str:sub(i, i))
if codepoint < 128 then
table.insert(bytes, codepoint)
elseif codepoint < 2048 then
table.insert(bytes, 0xC0 + math.floor(codepoint / 64))
table.insert(bytes, 0x80 + (codepoint % 64))
else
table.insert(bytes, 0xE0 + math.floor(codepoint / 4096))
table.insert(bytes, 0x80 + math.floor((codepoint % 4096) / 64))
table.insert(bytes, 0x80 + (codepoint % 64))
end
end
writeBytes(0x2A639EA8, bytes)
{$asm}
aobscanmodule(INJECT,Game.dll,8D 41 02 89 44 24 14 8D 64) // should be unique
alloc(newmem,$1000)
label(code)
label(return)
newmem:
code:
lea eax,[ecx+02]
mov [esp+14],eax
jmp return
INJECT:
jmp newmem
nop 2
return:
registersymbol(INJECT)
[DISABLE]
//code from here till the end of the code will be used to disable the cheat
INJECT:
db 8D 41 02 89 44 24 14
unregistersymbol(INJECT)
dealloc(newmem) |
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Write it into to ECX directly
{$asm}
aobscanmodule(INJECT,Game.dll,8D 41 02 89 44 24 14 8D 64) // should be unique
alloc(newmem,$1000)
label(code)
label(return)
newmem:
mov ecx, [esp+4]
writeBytes(ecx, bytes)
jmp return
INJECT:
jmp newmem
nop 2
return:
registersymbol(INJECT)
[DISABLE]
// code from here till the end of the code will be used to disable the cheat
INJECT:
db 8D 41 02 89 44 24 14
unregistersymbol(INJECT)
dealloc(newmem)
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