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- ShadowSpawn BBS Presents...
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-
-
- INSIDE RSTS/E VOL. II
-
-
- INSIDE RSTS/E
- -------------
-
- by: THE MARAUDER
-
- THE COUNCIL OF THE FEDERATION
-
- In this volume, i will discuss some of the basic bugs in RSTS/E that can
- be used to your advantage (and to others dis-advantage).., I will assume you
- have read my first part on rsts/, or have a working knowlege of the basic
- system commands, and that you already have aquired a valid account..
-
-
- 1) FREE SPACE
- What is free space?, Well on -all- rsts/e systems, there is a portion of the
- disk, assigned to 'free space', what basically is, is space free for the saving
- of files, when you issue a save, or open command, rsts/e simply grabs however
- many blocks are needed from this space, and stores your file there, then this
- space is marked as being 'unavailable'. When you delete, or kill a file the
- exact opposite happens, rsts/e moves a few pointers, which mark this space as
- 'available, (or free)' space, leaving the entire file 99% of the time totally
- intact!!.
- Here is an algorythym for a program to read free space:
-
- 10 open 'file.ext' as file 1%
- 20 put #1%,record XXXXX%
- 30 close 1%
- 40 end
-
- where:
- file.ext = any valid filename you want the free space to
- be placed in.
-
- XXXXX% = any integer between 1 and 32767 inclusive, telling
- how many blocks of free space you wish transferred
- into 'file.ext'.
-
- for example, if i wanted to read 500 blocks of free space into a file called
- "free.spc" i would write my program as follows:
-
- 10 open "free.spc" as file 1%
- 20 put #1%,record 500%
- 30 close 1%
- 40 end
-
- Now in my directory would be the file 'free.spc' holding 500 blocks of free
- space.. you can now simply pip, teco, etdt.. or any text editor to examine
- the contents of this file.. whatever was deleted in the past few hours will
- usually be 99% intact this includes BASIC programs, any ascii text files
- (compiled code is untranslatable si it's useless). This is especially
- usefull at schools in the beginning or end of year when the administration
- is deleting and creating new accounts..
-
- o NOTE: You (and anyone else) can prevent files from going to free space
- in a readable format. when deleting as file, prog, etc.. use the
- following..
-
- pip prog.ext/wo/lo (on rsts/e v6.00 and earlier)
- pip prog.ext/de/er (on rsts/e v7.00 and later )
-
- what this does in effect is tell pip to 'write zeroes' over the entire
- file before releasing it to free space..
- (few persons know to use this, and fewer still ever use it!!)
-
- 2) PROGRAMS WITH 'HOLES' IN THEM
-
- on most systems there are usually a few programs that have holes in t
- that can be used to your advantage.. here are a few i have found..
-
- if the system you are hacking supports a 'basic +2' runtime system
- (prompts with 'well??' from the basic
- keyboard monitor (from 'Ready')..
-
- sw bp2com
- esp
- ^Z (controll Z)
-
- this is a ledgendary bug in the older versions of rsts/e, what is basically
- does is switch to basic plus 2 as the default keyboard monitor, executes the
- ccl that envokes the RPG editor (esp), then controll z's (exits) out of it
- leaving FULL PRIVLIGES INTACT !!!, so you can run any program on the system!
-
- another big hole i have found, is in the program '(1,2)rpgdmp.tsk', which
- is a rpg ascii dump program, used for dumping rpg source code and checking
- for stray controll char's that have a way of getting into rpg source and
- playing hell with the compiler.. to use it simply try:
-
- run (1,2)rpgdmp
-
- it will ask you for a file name, then output device..
-
- well you can give it any file name on the system (like $acct.sys), and it
- will be dumped to whatever output device you selected!!! (screen, lp:, disk)
-
-
- UNTIL THE NEXT VOLUME......
-
- dial with care..
-
-
- The Marauder
-
- sysops are free to use this, as long as nothing is changed.
-
-
- ------------------------------------------------------------------------------
- Presented by: The Council of the FEDERATION
- ------------------------------------------------------------------------------
- @ (C) 1985, THE MARAUDER
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