Skrewing with VAX VMS · Article

VIII. Screwing with the most secure operating system on the net

(VAX/VMS Hacking)

WHAT IS VAX/VMS?

VAX:
Virtual Address eXtension. Computer is desisgned to use memory addresses beyond the actual hardware and can therefore run progs larger than physical memory. Developed by Digital Equipment Corporation (DEC).
VMS: Virtual Memory System. Also developed by DEC.


DCL:
Digital Command Language. Similar to DOS batch language or UNIX script language.
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WHAT
ARE SOME OF THE DEFAULT VAX LOGINS?
Username Password -------- -------- DECNET DECNET DEFAULT DEFAULT DEMO DEMO
unpassworded
FIELD FIELD
SERVICE
GUEST GUEST
unpassworded
OPERATOR OPERATOR
OPERATIONS OPERATIONS
SYSMAINT SYSMAINT
SERVICE
DIGITAL
SYSTEM SYSTEM
MANAGER
OPERATOR
SYSLIB
SYSTEST UETP
SYSTEST
SYSTEST_CLIG CLIG
SYSTEST
TEST
SUPPORT SUPPORT
DEC

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ WHAT ARE SOME OF THE BASIC COMMANDS FROM THE "$" PROMPT? @: executes a DCL program
usage- @filename.com

ACCOUNTING: program that tracks usage of the system by users CREATE: PASCAL compiler

usage- CREATE filename.pas

CREATE/DIR: create a subdirectory


DEL:
delete files
usage- DEL filename.ext
DIR:
list the contents of a directory
options- /FULL = full listing with all security info
/BRIEF = brief listing
* = wildcard for anything
% = wildcard for a specific character

EDIT: VMS editor, requires VT-220 terminal
HELP: brings up help info
LOGOUT: obvious
MAIL: send E-mail locally and to any connected networks $PASSWORD: change your password

usage- $PASSWORD newpassword

PHONE: chat program


usage-
PHONE changes the prompt to a '%', from there type in the username you wish to talk to. If the user is on a different node then enter nodename::username
PHOTO: record session
RUN: execute an executable file
SHOW: lets you look at alot of different stuff

usage- SHOW option

options-
CLUSTER = VAX cluster, if any
DEFAULT = directory path and device DEVICES = system devices (drives, modems, etc.) INTRUSION = accounts being hacked, if any MEMORY = obvious NETWORK = network name and VAX's location in it PROCESS = PROCESS processname shows status QUOTA = disk space available for account SYSTEM = system info DAY = obvious TIME = obvious USERS = online users
TYPE: display file on terminal (same as DOS 'type' and UNIX 'cat') SET FILE/PROTECTION: sets the Read/Write/Execute/Delete flags

usage- SET FILE/PROTECTION=OWNER[RWED] filename.ext

options-
WORLD, GROUP, or SYSTEM can be used in place of OWNER WORLD = all users in your world GROUP = all users in your group SYSTEM = all users with SYSPRV privileges
SET TERMINAL: controls terminal settings usage- SET TERMINAL/option

options-
WIDTH=80 = set width to 80 columns
ADVANCED_VIDEO = selects 124x24 lines NOADVANCED_VIDEO = unselects 124x24 lines ANSI_CRT = selects ANSI escape sequences NOANSI_CRT = unselects ANSI escape sequences AUTOBAUD = allows computer to select highest possible
baud rate
NOAUTOBAUD = turn off automatic baud selection BROADCAST = allows receipt of SEND, MAIL and PHONE messages
NOBROADCAST = prevents receiption of SEND, MAIL and PHONE messages
DEVICE_TYPE=VT220 = set terminal type to VT-220 ECHO = enables echoing from DCL command line NOECHO = disable DCL command line echoing FULLDUP = enable full duplex
NOFULLDUP = disable full duplex
HANGUP = log off if no carrier
NOHANGUP = don't log off even if no carrier INQUIRE = show device type of terminal PAGE=43 = set display length to 43 lines TYPE_AHEAD = enable type ahead function NOTYPE_AHEAD = disable type ahead function UNKNOWN = use for ASCII device types
WRAP = set wrap around feature
NOWRAP = unset wrap around feature

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WHAT ARE COMMON VAX FILENAME EXTENSIONS?

COMPILER SOURCE CODE FILES
ADA = ADA compiler source code file
BAS = BASIC compiler source code file
B32 = BLISS-32 compiler source code file
C = C compiler source code file
COB = COBOL compiler source code file
FOR = FORTRAN compiler source code file
MAR = MACRO compiler source code file
PAS = PASCAL compiler source code file
PLI = PL/I compiler source code file
OBJ = object code created by compiler before linking

DCL LANGUAGE FILES
CLD = DCL command description file
COM = DCL batch file

GENERAL FILES
DAT = DATa file
DIR = subDIRectory file
EXE = EXEcutable program
HLP = text for HeLP libraries
LIS = system listing files (TYPE, PRINT, PHOTO)
LOG = batch job output
MEM = DSR output file
RNO = DSR source file
SIXEL = file for SIXEL graphics
SYS = SYStem image file
TJL = Trouble JournaL
TMP = TeMPorary file
TXT = text library input file
UAF = User Autorization File

MAIL FILES
DIS = DIStribution file
MAI = MAIl message file
TXT = mail output file

EDT EDITOR FILES
EDT = command file for the EDT editor
JOU = EDT journal when problems occur
TPU = editor command file
Posted By Gremelin Posted on September 30th, 2009 · Updated on December 31st, 2010

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