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Tutorial: How To Crack Any type of registration protection.

Discussion in 'PC General' started by vettacossx-alpha, May 24, 2011.

Thread Status:
This thread is more than 180 days old.
  1. vettacossx-alpha

    vettacossx-alpha Midnight Mage Member


    [​IMG]

    In This Tutorial I'll Explain to you How To Crack
    Any type of registration protection.
    First of all.Use Softice cause i don't like Live Approch.
    Ok
    Run Your target program and go on the registration dialog,then put
    in the dialog any name and any serial number but DON'T press OK
    before press "control+d" to pops up softice and in softice sets some
    Break points.......for approching with a registration routine we must
    breakpoint on api(windows functions) used to read Your name and Your
    Sn.
    They are
    Getwindowtext
    GetwindowtextA
    Getdlgitemtext
    GetdlgitemtextA
    Hmemcpy (that's not an api but it's the best)

    Well the "A" after the api means 32 bit so if your program is 32 bit
    put the A if not don't.Easy!
    I always use only Hmemcpy cause it runs 99,9% of the times.
    Well now exit from softice by pressing control+d and press ok,if you have set
    a working bpx softice will pops up.

    Now start the real cracking.....
    Press F12 until you can read on the bottom line of SoftIce the name
    of the file of the program you're cracking....
    then if before your location there's a call ok,if not press again F12 until you find it.
    Then you must step into the code.....(by pressing F10),if in your stepping you find some
    condictional jumps have a look at them......btw step until you find a call that prompt you
    something like a messagebox or something else that prompt you the "You entered a Wrong code",
    well before that call you noticed a condictional jump that jumped on that call or dindn't jump
    over that call....if yes try to inverse the jump (change a jz into a jnz)
    or (a better way) change the value of the eip in order to make that jump to jump or not.
    Doing this if you find the good jump the program must prompt you "Thank for Registering this
    fucked program",
    now the crack is near to the end...
    Often cracking this way you will only prompt the "You Are Regged" but the program still continue
    to be unregged so in order to crack it 100% and easly there are 2 ways

    1) trace into the call BEFORE our important condictional jump and try to understand the code,
    in order to find the real compare instrucion that often is kept in this call not out....if
    you find out our real compare instruction,and change the below condictional jump in order to
    make it jump or not(it depends if it before jumped or not,do the reverse).
    Ok now the program should be fully cracked!

    2) this is a worse way than the first but it works!This way is easier for beginners
    You must trace into the call before our important codictional jmp,and then put a bpx in its first line,then press "x" and exit from softice and use the program in all its functions,create new,open,about,save, and when softice pops up press "f12" in order to get out that call and look for a near condictional jump and try to inverse it and look if the program looks like regged,
    you must sign up all these condictional jump and inverse it,and your program is cracked!

    And now that we know how this is done, you can now better protect your programs from being cracked. Take extra precaution when creating them as to how you arrange your functions which determine when and how you fully unlock the program to the user.
  2. dns

    dns Active Member Admin

    Very nice vetta! Thanks for this, a very good tutorial and something alot of people didn't know. +1 bro :thumbsup:
  3. vettacossx-alpha

    vettacossx-alpha Midnight Mage Member

    Yeah Lotta folks ask me about this so i keep a rich text of this put up imma post net tools 5 next that should save them from dl 175 apps separately
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