Archive A Reconstructed © MegaSecurity Database

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tested on Windows XP
March 28, 2007

Not-a-Bad Shell is a one-file telnetserver (one-user too for the moment). It can be installed
as a service on both win9x as winnt.
Shell Commands: just type 'help' in de shell prompt and you get a list of commands.
Extract the rar archive to an dir without spaces in it.
Installation: 
shell.exe -i : installs the shell as a service.
shell.exe -s : start the shell service (NT/XP).
shell.exe -f : starts the shell as a regular process (non-service NT/XP).
shell.exe : start the shell (win9x).
If the port u choose is in use at the moment, nabshell will try the next
port (yourport+1 til yourport+20)


Version 2.2:
- You can use the shell commands in the dos shell now, by adding a '?' in front of the command.
  fe. ?process list.

This archive is an almost-complete reconstruction of the legendary Mega Security (also known as Kobayashi), a premier 90s-era "Trojan Database" where malware authors once showcased their work. After a decade offline, the site was brought back in August 2024 by its original creator, MasterRat, who authorized the Malware Gallery to host this modernized, searchable version of the collection. While the original site remains available for those seeking a nostalgic, old-school experience, we are proud to continue its legacy here. Full credit and thanks go to MasterRat and the retired Mega Security staff for their years of dedicated work in cataloging these historical samples.