FoxPro 2.6 - Dos - Date Expiration
 

one prog in DOS that writen by FoxPro 2.6 work until 12-9-2008 (m/d/y)
but when I try to repair it I can't find the way becuse I search these instruction

mov ah,a2h
int 21h ; Get date

mov ah,4ch
int 21h ; Terminate prog

but this prog don't get date with above Dos Servive

Now I don't know what do I do ? Search for what ?
even after nop all ( 2 times ) terminate code then the prog terminate after
expiration date .

anyone have any Idea ?

other things what Debuger let me to run program in dos insteruction by instruction ?
( Debuger with right version for dos )

upload your executable somewhere like rapidshare, put the link to the download here and then we can help you

As I know Fox apps are not native codes
There is a stub running and then it runs something like VB PCode
So you can't find what you are looking for in a disassembler or debugger

You should try a foxpro decompiler (I don't know the exact name)

Hi,

Decompile it using Refox, then change the code and compile it again.

ReFox XI
ReFox X

Thanks for your help

you can get target from below link .

target link :
hxxp://rapidshare.de/files/40054382/Prog.rar.html

And other question is what is right disassembler and debuger for work on FoxPro?

Unfortunatlly Derefox , Croso 6 and ... can't unprotect and decompile this target .