• 标 题:初学者作品(5) (788字)
  • 作 者:liutong
  • 时 间:2000-5-4 13:04:03
  • 链 接:http://bbs.pediy.com

Turbo browser

like explore and add web function.
no place to input name and serial number.
first try to use "bpx showwindow" interrupt when time expired screen
display. But it is difficult for me.
So i try to use W32dasm.
After disassemble, i find one item "your turbo browser will expired
soon". I guess that expire determine maybe near it.
Double click.
Yes find some jnz and jz.
One of them is jump to display the above item.
others was jump to a place where use "xor ax,ax"
and the final jump is to a place where use" push 1, pop ax"
Ok, nomally the ax is used as flag for registered/not register.
So use WinHex edit exe file.
83 E8 00
74 35  -->90 90
48    -->90   
74 32  -->90 90
48    -->90
74 05  -->90 90
48    -->90 90
75 2C  -->90 90
EB 25