---------Library & Media Skills-------- A 4am crack 2015-09-23 --------------------------------------- Name: Library & Media Skills Genre: educational Year: 1983 Authors: Activity Records, Inc. Publisher: Educational Activities, Inc. Media: single-sided 5.25-inch floppy OS: DOS 3.3 Previous cracks: none Identical cracks: #461 Geometry Alive! Fundamentals of Geometry ~ 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 data epilogue ("BF AA EB" instead of "DE AA EB") Disk Fixer ["O" -> "Input/Output Control"] set Data Epilogue to "BF AA EB" all tracks readable T00 -> looks like a DOS 3.3 RWTS T11 -> DOS 3.3 disk catalog T01,S09 -> startup program is "LOADER" 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#254 150 FREE A 003 LOADER A 032 MGMT T 025 STUDFIL A 040 MEDIA3.0 A 037 MEDIA3.1 A 032 MEDIA3.2 A 032 MEDIA3.3 A 020 MEDIA3.4 A 035 MEDIA3.5 B 004 BASE2 B 002 PRNT B 005 TABLE B 004 PLOT.BIN A 011 EA MENU A 003 GRAFX A 007 ENDER B 034 PIC A 010 MEA MENU B 002 UNPACKIT2 B 005 LOGO.PACK A 003 NLOADER ]RUN LOADER ...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,$35 change BF to DE T00,S02,$9E change BF to DE Quod erat liberandum. ~ Epilogue Entering a first name of "SCORES" will take you to an administrative screen to show student records. Entering a first name of "PURGE" will allow you to purge student records. There is no administrative password. --------------------------------------- A 4am crack No. 462 ------------------EOF------------------