CrackMe® Practices for Newbies
PROJECT 5: zipfile.exe

Re: An workable solution. But difficult.
Wednesday, 10-Feb-99 16:39:26
    207.210.4.80 writes:

    Hi Mushy


    I have a thought on breaking it (may work, may not ??)
    I have noticed that at 40530C the file CRC is loaded into eax
    it is shifted and compared with ecx.
    Ecx has been manipulated up to this point with our password.
    That seems to indicate the file will make a CRC check # of the password we enter possibly using an encrypted form of the CRC to encrypt or decrypt the file. If we could find this location we might jump around the whole process and use the files CRC number to unlock the file either as it is by loading it in at a certain location or encrypting it in a simpler process before using it.

    Like I said it might not work, but its a thought.

    Princess

    Princess


Message thread:

The Mushy thread (mushy) (09-Feb-99 16:31:15)

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