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Snejk47



Joined: 04 Aug 2011
Posts: 2
Snejk47
Hi all, I'm new here Smile

I have C++ source file (SDK header) and i wanna convert it to FASM.
C++ file and what i now have done. I wanna rewrite all but i don't know how to convert for example this:
Code:
struct TPluginInfo
{
     int cbSize;
 wchar_t* ShortName;
 int Version;
        wchar_t* Description;
       wchar_t* Author;
    wchar_t* AuthorMail;
        wchar_t* Copyright;
 wchar_t* Homepage;
  char Flag;      
    int ReplaceDefaultModule;
};    


How can I check what I have to insert instead of an "int" or "unsigned int" or "wchar_t *"?

Snejk.
Post 04 Aug 2011, 14:47
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edfed



Joined: 20 Feb 2006
Posts: 4240
Location: 2018
edfed
only char flag is a byte value inside the struct

all others, like wchar_t* ShortName are just pointers to char strings containing the name in ascii.

i note that you omited to end the file names by a 0 bytes.
you should end all individual file names with a null char other wize, you will have problems to exploit them.

int can be 16 or 32 bits
depend on the application you want to do.
Post 04 Aug 2011, 15:54
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AsmGuru62



Joined: 28 Jan 2004
Posts: 1413
Location: Toronto, Canada
AsmGuru62
Also, different structure packing options in C++ may cause a misalignment of last field in a structure in FASM.
Post 04 Aug 2011, 17:22
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addes3



Joined: 09 May 2011
Posts: 29
addes3
You should change the DB's to EQU's.

And the L"" are wide (unicode) strings, so just wrapping them in single quotes may not work.
Post 04 Aug 2011, 22:08
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rain_storm



Joined: 05 Apr 2007
Posts: 67
Location: Ireland
rain_storm
The FASM equivelent would look something like this
Code:
struct TPluginInfo
    cbSize               dd ?
    ShortName            dd ?
    Version              dd ?
    Description          dd ?
    Author               dd ?
    AuthorMail           dd ?
    Copyright            dd ?
    Homepage             dd ?
    Flag                 dd ? ; assumes that char is padded to dword alignment
    ReplaceDefaultModule dd ? 
ends
    
Post 06 Aug 2011, 02:28
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addes3



Joined: 09 May 2011
Posts: 29
addes3
Post 12 Aug 2011, 20:45
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Overflowz



Joined: 03 Sep 2010
Posts: 1046
Overflowz
rain_storm
maybe this would be better ?
Code:
struct TPluginInfo 
    .cbSize               dd ? 
    .ShortName            dd ? 
    .Version              dd ? 
    .Description          dd ? 
    .Author               dd ? 
    .AuthorMail           dd ? 
    .Copyright            dd ? 
    .Homepage             dd ? 
    .Flag                 dd ? ; assumes that char is padded to dword alignment 
    .ReplaceDefaultModule dd ?  
ends    
Post 12 Aug 2011, 23:02
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Snejk47



Joined: 04 Aug 2011
Posts: 2
Snejk47
Thank you very much for all Wink
Post 13 Aug 2011, 16:04
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