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Can someone help me with AoB injections for a RPG Maker game

 
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qmhu
How do I cheat?
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Joined: 02 Jun 2019
Posts: 1

PostPosted: Sun Jun 02, 2019 1:58 pm    Post subject: Can someone help me with AoB injections for a RPG Maker game Reply with quote

I am trying to add a script pointer to a RPGVX game through CE 6.8 but I am not familiar Assemblers.

I can do something simple with templates but this one has multiple lines and I am not sure what should I do. This is currently what I have. The address returned to res is not correct, for sure.


Code:

[ENABLE]
aobscanmodule(attrRes,RGSS301.dll,8B 04 B8 5F 5E) // should be unique
alloc(newmem,$1000)

label(code)
label(return)
alloc(res,4)
registersymbol(res)

newmem:
  mov [res],eax

code:
  mov eax,[eax+edi*4]
  pop edi
  pop esi
  jmp return

INJECT:
  jmp newmem
return:
registersymbol(attrRes)

[DISABLE]

INJECT:
  db 8B 04 B8 5F 5E

unregistersymbol(attrRes)
dealloc(newmem)

{
// ORIGINAL CODE - INJECTION POINT: "RGSS301.dll"+89B72

"RGSS301.dll"+89B59: C1 E8 0F              -  shr eax,0F
"RGSS301.dll"+89B5C: 83 E0 03              -  and eax,03
"RGSS301.dll"+89B5F: EB 03                 -  jmp RGSS301.dll+89B64
"RGSS301.dll"+89B61: 8B 42 08              -  mov eax,[edx+08]
"RGSS301.dll"+89B64: 3B C7                 -  cmp eax,edi
"RGSS301.dll"+89B66: 7E 10                 -  jle RGSS301.dll+89B78
"RGSS301.dll"+89B68: 8D 42 08              -  lea eax,[edx+08]
"RGSS301.dll"+89B6B: 85 F6                 -  test esi,esi
"RGSS301.dll"+89B6D: 75 03                 -  jne RGSS301.dll+89B72
"RGSS301.dll"+89B6F: 8B 42 10              -  mov eax,[edx+10]
// ---------- INJECTING HERE ----------
"RGSS301.dll"+89B72: 8B 04 B8              -  mov eax,[eax+edi*4]
"RGSS301.dll"+89B75: 5F                    -  pop edi
"RGSS301.dll"+89B76: 5E                    -  pop esi
// ---------- DONE INJECTING  ----------
"RGSS301.dll"+89B77: C3                    -  ret
"RGSS301.dll"+89B78: 5F                    -  pop edi
"RGSS301.dll"+89B79: B8 04 00 00 00        -  mov eax,00000004
"RGSS301.dll"+89B7E: 5E                    -  pop esi
"RGSS301.dll"+89B7F: C3                    -  ret
"RGSS301.dll"+89B80: 53                    -  push ebx
"RGSS301.dll"+89B81: 57                    -  push edi
"RGSS301.dll"+89B82: 8B 7C 24 0C           -  mov edi,[esp+0C]
"RGSS301.dll"+89B86: 8B 07                 -  mov eax,[edi]
"RGSS301.dll"+89B88: 8B D0                 -  mov edx,eax
}


Thanks all of you who would be of help.
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OldCheatEngineUser
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Joined: 01 Feb 2016
Posts: 1480

PostPosted: Sun Jun 02, 2019 8:54 pm    Post subject: Reply with quote

Code:
newmem:
lea esi,[eax++edi*4]
mov [res],esi

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