Wargames

Special File Name:

• –

cat ./-
# -- stops parsing params
rm -- -filename

• space in between

cat space\ in\ between

File Properties:

• find

find / -name file* -size 1033c -redable -user hublee -group mygroup ! -perm /111 2>/dev/null

• file

file somefile

File Content:

• sort | uniq

cat somefile | sort | uniq -u

• strings

strings somefile | grep '^===*'

• base64

base64 -d somefile

• md5sum

echo I am user $myname | md5sum | cut -d ' ' -f 1

• tr

cat data.txt | tr [a-zA-Z] [n-za-mN-ZA-M]

• diff

diff password.new password.old

Compress/Decompress:

gzip -d for *.gz

bzip2 -d

tar -xvf

Network:

• ssh

ssh -i privatekey.file user@host cat readme.txt

Note:RSA-key file is of the form:

—–BEGIN RSA PRIVATE KEY—–
xxx
—–END RSA PRIVATE KEY—–

• nc
  #connect to IP PORT

nc -v 127.0.0.1 30000

#create a listening port

nc -l 9000

• openssl

openssl s_client -ign_eof -connect localhost:30001

• nmap

nmap -p 31000-32000 localhost