Reading the file is allowed by "other" users who aren't the owner or in the owning group
It is possible to just change the x for the root user in the passwd file, then su using no password
Or we can change our users user and group id to 0 to become the root user
Copy contents of passwd and shadow into new files on your machine
Use unshadow to turn into a easier crackable format ad fill in the blank
unshadow passwd shadow > unshadow
Find hash type
hashcat --example-hashes | grep -i '\$6\$'
Crack
hashcat -m 1800 unshadow ~/rockyou.txt -O