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Need to reduce new money value

 
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Agent_Punto
How do I cheat?
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Joined: 06 Apr 2021
Posts: 1

PostPosted: Tue Apr 06, 2021 6:16 am    Post subject: Need to reduce new money value Reply with quote

Hi everyone. I need to edit STN's Forza Motorsport 7 money script to make 150-300M instead of 999,999,999 Credits (I think the new value in the script is more than billion, but I don't know where should I look for it). Unfortunately, STN didn't answer anybody how to make less credits, so I came here

The STN's script code:

Code:

{ Game   : forzamotorsport7.exe
  Version:
  Date   : 2017-10-02
  Author : STN

  This script does blah blah blah
}

[ENABLE]

aobscanmodule(money,ForzaMotorsport7.exe,48 89 44 24 50 48 8B DA 48 8B F9 83) // should be unique
alloc(newmem,$1000,money)

label(code)
label(return)

newmem:
cmp [rdx+48], 'UpTime'
jne code
cmp [rdx+8], #1000
jna code
mov rbx, [rdx+8]
cmp rbx, 0
je code
mov [rbx], 77ACA3EB //04C494A90
code:
  mov [rsp+50],rax
  jmp return

money:
  jmp newmem
return:
registersymbol(money)

[DISABLE]

money:
  db 48 89 44 24 50

unregistersymbol(money)
dealloc(newmem)

{
// ORIGINAL CODE - INJECTION POINT: "ForzaMotorsport7.exe"+EBA602

"ForzaMotorsport7.exe"+EBA5DE: CC                                -  int 3
"ForzaMotorsport7.exe"+EBA5DF: CC                                -  int 3
"ForzaMotorsport7.exe"+EBA5E0: 48 8B C4                          -  mov rax,rsp
"ForzaMotorsport7.exe"+EBA5E3: 57                                -  push rdi
"ForzaMotorsport7.exe"+EBA5E4: 48 83 EC 60                       -  sub rsp,60
"ForzaMotorsport7.exe"+EBA5E8: 48 C7 40 C0 FE FF FF FF           -  mov [rax-40],FFFFFFFE
"ForzaMotorsport7.exe"+EBA5F0: 48 89 58 18                       -  mov [rax+18],rbx
"ForzaMotorsport7.exe"+EBA5F4: 48 89 70 20                       -  mov [rax+20],rsi
"ForzaMotorsport7.exe"+EBA5F8: 48 8B 05 11 D8 8A 06              -  mov rax,[ForzaMotorsport7.exe+7767E10]
"ForzaMotorsport7.exe"+EBA5FF: 48 33 C4                          -  xor rax,rsp
// ---------- INJECTING HERE ----------
"ForzaMotorsport7.exe"+EBA602: 48 89 44 24 50                    -  mov [rsp+50],rax
// ---------- DONE INJECTING  ----------
"ForzaMotorsport7.exe"+EBA607: 48 8B DA                          -  mov rbx,rdx
"ForzaMotorsport7.exe"+EBA60A: 48 8B F9                          -  mov rdi,rcx
"ForzaMotorsport7.exe"+EBA60D: 83 79 10 12                       -  cmp dword ptr [rcx+10],12
"ForzaMotorsport7.exe"+EBA611: 75 06                             -  jne ForzaMotorsport7.exe+EBA619
"ForzaMotorsport7.exe"+EBA613: 83 7A 10 03                       -  cmp dword ptr [rdx+10],03
"ForzaMotorsport7.exe"+EBA617: 74 08                             -  je ForzaMotorsport7.exe+EBA621
"ForzaMotorsport7.exe"+EBA619: 8B 52 10                          -  mov edx,[rdx+10]
"ForzaMotorsport7.exe"+EBA61C: E8 2F F7 00 00                    -  call ForzaMotorsport7.exe+EC9D50
"ForzaMotorsport7.exe"+EBA621: 48 63 47 10                       -  movsxd  rax,dword ptr [rdi+10]
"ForzaMotorsport7.exe"+EBA625: 83 F8 12                          -  cmp eax,12
}
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ParkourPenguin
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Joined: 06 Jul 2014
Posts: 4275

PostPosted: Tue Apr 06, 2021 11:36 am    Post subject: Reply with quote

Agent_Punto wrote:
I think the new value in the script is more than billion
0x04C494A90 is a little more than a billion (1,279,871,632).

I'd assume there's some sort of obfuscation going on between how it's stored in memory and how it's semantically used. Given that the semantic value in this script is such an odd number, perhaps STN went about this using trial-by-error (purely speculation).

Try changing 77ACA3EB a little and see what happens.

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