Page 2 of 2
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Mon Oct 16, 2023 9:02 am
by PoorMan
Gents,
Sorry for the confusion. I'll explain the issue in detail.
Game is big so I created an alternative sample code, were you can get the 'Correct MessageBox' if you enter "
I_Love_PB".
Code: Select all
If InputRequester("PoorMan", "Enter Password:", "") = "I_Love_PB"
MessageRequester("", "Password is Correct!")
Else
MessageRequester("", "Password is Incorrect!")
EndIf
Using a debugger, you can simply change the instruction
"or eax,eax" at
"$10BE" to
"mov al,1" to get the correct message whatever your input is, but this is Not what I want (see the picture):
https://ibb.co/jwpjghv
Actually, I need the following DLL Code to change
"eax value to 1" once the code leaves RVA $10BE":
Code: Select all
EnableExplicit
ProcedureDll DoASM() ; Procedure Name will be changed later
Protected EAX.l
! mov eax, 1
! mov dword [p.v_EAX], eax ; p.v_EAX -> pointer to variable EAX
EndProcedure
DoASM()
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Mon Oct 16, 2023 8:31 pm
by Olli
You can make a virtual machin on pureBasic :
Code: Select all
Procedure.S myVM(OpCode, arg.s)
Repeat
Select OpCode
Case 0: End
Case 1: ProcedureReturn InputRequester("", "", "")
Case 2: ProcedureReturn Str(Bool(Len(arg) )
Case 3: ProcedureReturn StringField(arg, ";", Val(StringField(arg, ";", 1) + 1) )
; etc...
EndSelect
ForEver
EndProcedure
Also, a program is a values serial (1, 2, 5, 1, 0, or whatever).
And this serial is "crypted" by a string.
factice encryption : (simple addition modulo 10)
(password = 056
program = 12510)
Code: Select all
05605 password looped
+++++
12510 program
"""""
17115 encrypted program
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Tue Oct 17, 2023 8:59 pm
by PoorMan
virtual machin .. !
Nor in my dreams, I expected to find a GENIUS same as you in this form!
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Wed Oct 18, 2023 12:02 pm
by Olli
Is this
your image ?
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Wed Oct 18, 2023 5:49 pm
by PoorMan
Forget about my image Mr. "virtual machine"
I've solved the issue by myself!
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Wed Oct 18, 2023 5:51 pm
by Olli
And this :
Code: Select all
If InputRequester("PoorMan", "Enter Password:", "") = "I_Love_PB"
MessageRequester("", "Password is Correct!")
Else
MessageRequester("", "Password is Incorrect!")
EndIf
Is this
your source code ?
Re: Using 'FileSeek' and 'Inline ASM' in Memory?
Posted: Wed Oct 18, 2023 8:26 pm
by Mijikai
PoorMan wrote: Wed Oct 18, 2023 5:49 pm
...
I've solved the issue by myself!
PG/VEH ?