teach/adlin
Archived
0
0
Fork 0
Code Issues 1 Pull requests 4 Releases Activity

server image done

Browse source
This commit is contained in:
nemunaire 2018-03-05 17:39:56 +01:00 • committed by Pierre-Olivier Mercier
commit eb5b8cdbce
4 changed files with 441 additions and 79 deletions
Download patch file Download diff file Expand all files Collapse all files

18
challenge/init
View file

@ -38,26 +38,28 @@ done
/bin/rm -f /init /linuxrc
# Randomize time at boot
/bin/date -s 19$((70 + $RANDOM % 30))0$((1 + $RANDOM % 9))0$((1 + $RANDOM % 9))0$((1 + $RANDOM % 9))0$((1 + $RANDOM % 9))01 > /dev/null
/bin/date -s 19$((70 + $RANDOM % 30))0$((1 + $RANDOM % 9))0$((1 + $RANDOM % 9))0$((1 + $RANDOM % 9)).0$((1 + $RANDOM % 9))01 > /dev/null
/sbin/sysctl -w net.ipv4.ip_default_ttl=4 > /dev/null
# Launch some daemons
/usr/bin/setsid /usr/sbin/crond > /dev/null &
# Change font
zcat /usr/share/consolefonts/Inconsolata-16r.psf.gz | loadfont
# Prepare token 4
mkdir -p /mnt
for l in a b c d e f g h i j k l m n o p q r s t u v w x y z zz; do
[ -b /dev/sd$l ] || break
done
echo /dev/sd$l
/bin/dd if=/dev/zero of=/dev/sd${l} count=1 > /dev/null
/bin/dd if=/dev/zero of=/dev/sd${l}1 count=1 bs=10240000 > /dev/null
/sbin/mkfs.ext4 /dev/sd${l}1 > /dev/null
mount /dev/sd${l}1 /mnt > /dev/null
N1=$((125 - $RANDOM % 50))
N2=$((25 + $RANDOM % 50))
/bin/dd if=/dev/zero of=/dev/sd${l} count=1 > /dev/null 2> /dev/null
/bin/dd if=/dev/zero of=/dev/sd${l}1 count=1 bs=10240000 > /dev/null 2> /dev/null
/sbin/mkfs.ext4 /dev/sd${l}1 > /dev/null 2> /dev/null
mount /dev/sd${l}1 /mnt > /dev/null 2> /dev/null
N1=$((72 - $RANDOM % 35))
N2=$((25 + $RANDOM % 35))
{
echo -n $N1
echo -n $N2