Crackme3 Hack Tutorial

Crackme3 Hack Tutorial

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1, first use Peid to Crackme3 shell test

Click the button on the right of file to select Crackme3

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The results are as follows:

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That is, no shell.

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2. Trial run software

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   Click Register now!

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   The results are as follows:

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3. start cracking with ollydbg .

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   Open it

   Click File->open to locate Crackme3 open

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   Right-click->search For->all referenced text strings

   Right-click->search for text

   Enter the keyword "wrong"

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   Click OK

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   Double click:

   Observation:

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   Press F2 at 00440F2C to set breakpoints, press F9 to run

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   Click Register Now! , enter olldbg, press F7 to enter the commissioning

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   After analysis, the user name and registration code are: Registered user and gfx-745-ier-954

   But the 00440F2C statement will be checked, so delete the sentence

   In this sentence, press BACKSPACE.

5. Save changes

   Right-click->copt to Executable

   Pop-up window, right-click->save file

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   Press "Yes (Y)"

   Select Address, save

   Open the Saved software, enter: Registered User and gfx-745-ier-954

   Then press registered now!

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   Cracked success!

Crackme3 Hack Tutorial