THIS PHILE WAS DONATED BY MR. MADNESS SYSOP OF THE S H I R E MR. XEROXS BOOT TRACING

---
Master Index Current Directory Index Go to SkepticTank Go to Human Rights activist Keith Henson Go to Scientology cult

Skeptic Tank!

THIS PHILE WAS DONATED BY MR. MADNESS SYSOP OF THE <<<<<<<<< S H I R E >>>>>>>> *************************************** * * * MR. XEROX'S BOOT TRACING * * PART I * * * *************************************** NOTE: I CHOSE APPLE GALAXIN HERE BECAUS E IT IS A WIDELY DISTRIBUTED PROGRA M , AND IT ENCOMPASSES THE BASIC ID E AS IN BOOT TRACE CRACKING. FOR ALL THOSE INTRESTED PIRATES OU T THERE, YES THERE IS ANOTHER WAY TO CRA C K PROGRAMS. YOU DON'T NEED ANY RAM-CAR DS,PROM BURNERS, OR FOREIGN TO REGULAR D O S PROGRAMS, ANYBODY WHO IS NOT A CLOWN, WITH SOME MACHINE LANGUAGE PROGRAMMIN G ABILITY CAN TRACE A BOOT. THIS METHOD OF CRACKING, TRACEING THE BOOT, IS IN A TRUE SENSE, CRACKING THE CODE. YOU SEE, FOR ALL DISKS, THEY MUST FIRST BOOT UP T O START RUNNING. AFTER THE FIRST STAGE BOOT (AT LOCATION $C600), THEY JUMP TO SECOND STAGE BOOT PROGRAM (AT $800), AN D THEN TO A THIRD, AND SOME EVEN A FORTH , BUT THERE COMES A POINT WHERE THE LOAD ING OF THE PROGRAM FROM DISK STOPS, AND T HE RUNNING OF THE PROGRAM BEGINS. IF Y OU CAN TRACE THIS, AND STOP IT AFTER IT I S FINISHED LOADING, AND SAVE ALL THE ME MORY LOCATIONS THAT CONTAIN THE PROGRAM O NTO A NORMAL 3.3 DISK, YOU HAVE CRACKED THE PROGRAM. THIS METHOD IS MOST USEFU L FOR CRACKING THE "SINGLE-SHOT" BOOTING PROGRAMS SUCH AS APPLE PANIC, RASTER B L ASTER, AND GORGON. THESE DISKS DON'T CO NTAIN ANY STANDARD DOS, BUT RATHER THEIR OWN. THIS DOS HAS JUST ONE PURPOSE, AND THAT IS TO LOAD THE PROGRAM INTO THE CO M PUTER, FROM THE DISK, AND START ITS EXE CUTION. NOW, THIS IS NOT AS SIMPLE AS I T SOUNDS, AS THE SOFTWARE PROTECTORS ARE NOT DUMB, THEY TRY TO MAKE IT TOUGH FOR YOU TO TRACE. HOWEVER, IT IS NOT IMPOS SIBLE, SINCE THE DISK MUST BOOT UP, AND S INCE IT MUST HAVE SOME BOOTING PROCESS, THAT IS TRACEABLE. LET ME TRY AND SHOW YOU AN EXAMPLE OF HOW TO TRACE A BOOT OF A PROGRAM.LET ME SHOW YOU HOW TO TRACE APPLE GALAXIAN . THE FIRST STAGE BOOT STARTS AT $C600. IF YOU TURN YOUR APPLE ON, AND TYPE " CALL-151 (RETURN)" AND "C600G (RETURN)", THE DISK WILL PROCEED TO START AND BOOT THE DISK IN THE DRIVE. THIS IS BECAUSE $ C600 CONTAINING THE PROGRAM FOR THE DIS K TO BOOT FIRST. IF, YOU EXAMINE THIS P R OGRAM BY TYPING "CALL-151 (RETURN)", AN D "C600LLLLLLL (RETURN)", YOU WILL SOON C OME ACROSS A JMP $801, NEAR THE END, SP ECIFICALLY, AT $C6F8. THIS IS THE LINK T O THE NEXT STAGE OF THE BOOT WHAT WE MUS T DO IS ALLOW THE FIRST STAGE TO LOAD IN AT $800, BUT INSTEAD OF LETTING IT RUN (CONTINUE TO BOOT, AND GO TO $800), STOP THE COMPUTER, AND EXAMINE WHAT IS AT $8 00. TO DO THIS LETS MOVE $C600 DOWN TO $ 9600.TYPE "CALL-151 (RETURN)" AND "9600

---

E-Mail Fredric L. Rice / The Skeptic Tank