Vladimir Cicovic Blog

LHasa solution for url: https://sadservers.com/scenario/lhasa

In this case we could use awk to sum all numbers in second columns and divide by number of entries ( 100 of them) So 520.4 / 100 -> 5.20

awk '{sum+=$2;} END{print sum;}' scores.txt

Task at: https://sadservers.com/scenario/taipei

Inside of this task we have port knocking, very famous solution to bring protection to access for certain port. More information on this: https://wiki.archlinux.org/title/Port_knocking

One simple way to unlock port 80 is to use nmap 2-3 times on all ports to open port 80:

nmap -Pn -p 1-65535 localhost

Famous port knocking with nmap tool

Solution for: https://sadservers.com/scenario/command-line-murders

File people contain all names, what we need is to find md5 hash of real name to add into mysolution file.

First, command to extract all people names:

awk '{print $1" "$2}' people >> find

After that we need to extract proper name with md5 hash from file "find", so use command:

while read -r col1 ; do
   echo $col1  "$(echo $col1 | md5sum )" | grep 9bba101c7369f49ca890ea96aa242dd5
done < find

and here you go your killer name:

Killer name