enter/return problem

flat assembler
Message board for the users of flat assembler.

Index > Windows > enter/return problem

Author

Thread

mimas

Joined: 21 Jul 2003
Posts: 10

mimas

Hi there,
I'm writing a fasm skeleton for PEiD's plugin (DLLs), and I've got problem with macro enter/return

Here is the code of the exported procedure

Code:

proc DoMyJob, hMainDlg, szFname, lpReserved, lpParam
     enter
     invoke MessageBox, [hMainDlg], [szFname], szTitle, MB_ICONWARNING+MB_OK
     mov eax, 2
     return

The plugin makes an error when it returns to the caller. Normaly the stack is "cleaned" in the PEiD code but the enter & leave combo cleans the stack before with a "ret 10" making the EIP to be lose in strange and deeper memory address. So, where is a way to not clean the stack, just a leave & ret not a leave & ret 10 ?

Thanks

14 Jan 2004, 16:54

comrade

Joined: 16 Jun 2003
Posts: 1140
Location: Russian Federation

comrade

use cproc, include cdecl.inc

_________________
comrade (comrade64@live.com; http://comrade.ownz.com/)

15 Jan 2004, 01:10

Kevin_Zheng

Joined: 04 Jul 2003
Posts: 125
Location: China

Kevin_Zheng

It's another method:
using the belowing code to replace the "return" macro instruction.

Code:

leave
ret

15 Jan 2004, 04:34

mimas

Joined: 21 Jul 2003
Posts: 10

mimas

Thanks, I had missed the cdecl.inc.

18 Jan 2004, 21:25

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum