Use telnet on a mac to break through file security. V. 1.0
Written by SpoonMan on Feb 5, 1998
SpoonMan_@hempseed.com

Most schools have a mac lab.  But they are protected by programs such as 
OnGuard or Foolproof.  They restrict copying files to the hard drive and 
programs can only be run from the hard drive.  They also restrict access 
to the system folder.  If you want to put something onto the hard drive, 
such as a keystroke logger, too bad, can't do it.  But with a common 
program that no one would think to be harmful, it can be done.  All you 
need to have on the machine is a telnet program, such as NCSA Telnet or 
BetterTelnet and stuffit expander, or somthing that can expand compressed 
files.  What most people dont know about mac telnet clients is that it has 
a built in ftp server.  In Better Telnet and NCSA telnet, it is under the 
Edit menu, FTP Server, in that panel, check the radio button from "ftp 
server off" to "ftp server on, no passwords needed".  Now goto Edit FTP 
users, and change the default ftp directory to the hard drive.  After you 
do this, the entire mac's hard drive is being served over ftp, you can 
upload anything to the mac, and you can go into restricted areas such as 
the system folder.  

Before you upload a mac program to it, you must compress it.  Mac programs 
have two forks, the data fork and the resource fork.  When you upload ftp, 
it only uploads the data fork.  That's where stuffit expander comes in, 
lets say you stuffed the installer for a backdoor program such as WeeDo's 
RAE (Remote Administration Extension http://weedo.blackout.org), then you 
upload it to the target mac.  After that, you must use stuffit expander to 
extract the file so you can run it.  This technique can be used to 
transfer anything to the mac to be ran.  Another good program you might 
want to have is ResEdit and Burn.  Because you cannot delete the files you 
uploaded to the mac, you need someway to get rid of it.  Burn is a good 
utility to completely erase any file.  Or you can use resedit to make a 
file invisible so the admin cant see it.  But if they do a careful search, 
they can find invisible files so be careful.  This technique can be useful 
at public terminals such as at a library, where many people will use the 
computer.  

--SpoonMan--