Virtual block and macro.

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Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 15 Jun 2024, 08:00

Fasmw 1.73

Code:

Virtual at 0
Code1:: 
        mov ecx,"!"
.1:     call proc1   
        dec ecx
        jnz .1
.data  
end virtual

;in code
macro MutblC ka,e { repeat ka#.data 
                 load dc byte from ka:%-1
                 if dc = "!"
                    dc = e
                 end if
                 db dc
                 end repeat
      }
MutblC Code1,40

I can do one byte.
But how do, if i want ecx = 200000 or ecx=[from data] ?

15 Jun 2024, 08:00

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20451
Location: In your JS exploiting you and your system

revolution 15 Jun 2024, 09:55

Code:

load dc dword from ...

15 Jun 2024, 09:55

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 15 Jun 2024, 10:01

But how about code virtual block size ?
I thinked must be byte, but not load dword.

15 Jun 2024, 10:01

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20451
Location: In your JS exploiting you and your system

revolution 15 Jun 2024, 10:05

Code:

repeat ka#.data - 3

15 Jun 2024, 10:05

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