OD Debug Article 3-Small software hack 1

OD Debug Article 3-Small software hack 1

Request if the software needs to change 5 places, of which 1, 2 is the software is not registered and set a limited number of additions, 3, 4, 5 is the software display some unregistered information.

One

1, press 1 to run the program, add the user added a fifth when prompted, press 2 to pause, and then press 3 back to the user

2, also back to the user interface click OK

3, press F8 single Step execution

4, when the return to this program has a keyword "4", we have to do is "CMP" under the "JL" to occur jump.

5, Mouse point to 1, and then click on the space, you can change "JL short 00412DEF" to "jmp short 00412DEF"

6. Select the row to copy to the executable file, and then save

7, run the test, add users there is no limit.

Ii. modification of some dialogues

1, run the program click "M", then right click on the search input

2. Select "This was an .... "String, and then edit the Modify

Remember 0048f974.

4, click "C", in the lower left corner "ctrl+g" Input "0048f974"

5. Save

6. Run the test

Note: 2, 3, 5 are not modified with 1, 4 almost

Be aware that every modification is saved!

OD Debug Article 3-Small software hack 1