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Text File  |  2003-01-06  |  2KB  |  29 lines
  1. Hello,
  2. Lets get to the point which is cracking.
  3.  
  4. Run Bin.exe and give any serial eg:7777777
  5. don't hit OK yet.
  6. Press Ctrl+D and place a bpx hmemcpy and then hit F5
  7. Now hit OK and you are back to SICE.Press F10 or F12 untill you are in the program's code
  8. You must see this:
  9. -------------------------------------------------------------------Cut here----------------------------------------------------
  10.  
  11. :00401068 833E00                  cmp dword ptr [esi], 00000000 <-------- We are here
  12. :0040106B 7504                    jne 00401071 <-------------------------------- The key is wrong, jump
  13. :0040106D EB0E                    jmp 0040107D <----------------------------- The key is right, jump
  14. :0040106F EB0C                    jmp 0040107D <------------------------------ The same
  15. :00401071 8B1E                    mov ebx, dword ptr [esi] <----------------- Don't let this fool you
  16. :00401073 E897000000              call 0040110F <--------------------------- I think this does nothing but fooling us
  17. :00401078 83C604                  add esi, 00000004 <------------------------ This one too
  18. :0040107B EBEB                    jmp 00401068 <------------------------------ Jump to the first line again
  19. :0040107D 3DBF96287A              cmp eax, 7A2896BF <----------------- Compare our serial with the right one
  20. :00401082 7514                    jne 00401098 <--------------------------------- Jump if not good
  21. :00401084 6A40                    push 00000040 <------------------------------ Keep going
  22. ...
  23. :0040108B 683B354000              push 0040353B <------------------------- Push the good boy message
  24. :00401090 FF7508                  push [ebp+08]
  25.  
  26. -------------------------------------------------------------------Cut here----------------------------------------------------
  27.  
  28. Now we see that our serial is being compared to 7A2896BF.So you can do an evaluation of it in SICE  (? 7A2896BF) or you can convert it in calc.exe to decimal and you will see this number: 2049480383 which is
  29. our good serial.