--Originally published at CRACK THE NETWORK
To crack passwords using John the Ripper first we need to install it with the following script:
#/bin/bash # Centos 7 John the Ripper Installation yum -y install wget gpgme yum -y group install "Development Tools" cd wget http://www.openwall.com/john/j/john-1.8.0.tar.xz wget http://www.openwall.com/john/j/john-1.8.0.tar.xz.sign wget http://www.openwall.com/signatures/openwall-signatures.asc gpg --import openwall-signatures.asc gpg --verify john-1.8.0.tar.xz.sign tar xvfJ john-1.8.0.tar.xz cd john-1.8.0/src make clean linux-x86-64 cd ../run/ ./john --test #password dictionnary download wget -O - http://mirrors.kernel.org/openwall/wordlists/all.gz | gunzip -c > openwall.dico
Then we execute ./john-1.8.0/run/john -wordlist:openwall.dico passfile.txt
And we wait for the passwords to be cracked.