----------Who What When Where----------
A 4am crack                  2015-08-23
---------------------------------------

Name: Who What When Where
Version: 05.22.84
Genre: educational
Year: 1984
Publisher: Hartley Courseware
Media: single-sided 5.25-inch floppy
OS: Diversi-DOS (T02,S02 has the string
  "C1983 DSR" backwards)
Previous cracks: none
Identical cracks:
  Home Row (crack no. 351)
  Reading for Meaning Level 2 (no. 154)
  many other Hartley Courseware titles

                   ~

               Chapter 0
 In Which Various Automated Tools Fail
          In Interesting Ways


COPYA
  immediate disk read error

Locksmith Fast Disk Backup
  unable to read any track

EDD 4 bit copy (no sync, no count)
  works

Copy ][+ nibble editor
  modified address and data epilogues
  ("DA AA EB" instead of "DE AA EB")

Disk Fixer
  ["O" -> "Input/Output Control"]
    set Address Epilogue to "DA AA EB"
    set Data Epilogue to "DA AA EB"
  all tracks readable
  T00 -> looks like a DOS 3.3 RWTS
  T11 -> DOS 3.3 disk catalog
  T01,S09 -> startup program is "HELLO"

Why didn't COPYA work?
  modified epilogue bytes (every track)

Why didn't Locksmith FDB work?
  modified epilogue bytes (every track)

EDD worked. What does that tell us?
  no half or quarter tracks
  almost certainly no nibble check
  (just structural changes to epilogue)

Next steps:

  1. capture RWTS with AUTOTRACE
  2. convert disk to standard format
     with Advanced Demuffin
  3. patch RWTS to read standard format

                   ~

               Chapter 1
In Which We Attempt To Use The Original
    Disk As A Weapon Against Itself


[S6,D1=original disk]
[S6,D2=blank disk]
[S5,D1=my work disk]

]PR#5
CAPTURING BOOT0
...reboots slot 6...
...reboots slot 5...
SAVING BOOT0
CAPTURING BOOT1
...reboots slot 6...
...reboots slot 5...
SAVING BOOT1
SAVING RWTS

]BRUN ADVANCED DEMUFFIN 1.5

["5" to switch to slot 5]

["R" to load a new RWTS module]
  --> At $B8, load "RWTS" from drive 1

["6" to switch to slot 6]

["C" to convert disk]

                 --v--

ADVANCED DEMUFFIN 1.5    (C) 1983, 2014
ORIGINAL BY THE STACK    UPDATES BY 4AM
=======PRESS ANY KEY TO CONTINUE=======
TRK:...................................
+.5:
    0123456789ABCDEF0123456789ABCDEF012
SC0:...................................
SC1:...................................
SC2:...................................
SC3:...................................
SC4:...................................
SC5:...................................
SC6:...................................
SC7:...................................
SC8:...................................
SC9:...................................
SCA:...................................
SCB:...................................
SCC:...................................
SCD:...................................
SCE:...................................
SCF:...................................
=======================================
16SC $00,$00-$22,$0F BY1.0 S6,D1->S6,D2

                 --^--

]PR#5
...
]CATALOG,S6,D2

C1983 DSR^C#254
210 FREE

*A 002 HELLO
*A 005 CREDITS
*A 007 MENU
*A 023 CREATE WORDLIST
*A 026 CHANGE WORDLIST
*A 015 STUDENT PLANNING
*A 036 NEW WHO
*B 010 LARGE CHARS
*B 003 SMILES
*B 003 HR
*T 044 RESPONSES.F
*T 001

         = COPYRIGHT (C)  1983  =
*T 001   HARTLEY COURSEWARE, INC.
*T 001   = ALL RIGHTS RESERVED  =


 T 007 WW1
 T 007 WW2
 T 007 WW3
 T 007 WW4
 T 008 WW5
 T 007 WW6
 T 007 WW7
 T 007 WW8
 T 007 WW9
 T 008 WW10
 T 009 WW11
 T 009 WW12
 T 009 WW13
 T 010 WW14

]RUN HELLO
...works...

[S6,D1=demuffin'd copy]

]PR#6
...grinds...

My copy can't read itself yet. This is
not unusual.

                   ~

               Chapter 2
 In Which We Remove All Traces Of Copy
Protection Using An Automated Tool That
   I Wrote For Just Such An Occasion


[S6,D1=demuffin'd copy]
[S5,D1=my work disk]

]PR#5
]BRUN PDP

T00,S03,$91 change DA to DE
T00,S03,$35 change DA to DE
T00,S02,$9E change DA to DE

Quod erat liberandum.

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A 4am crack                     No. 419
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