Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:security/openSUSE_Tumbleweed/home:mnhauke:security.repo
zypper refresh
zypper install john
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:security/16.0/home:mnhauke:security.repo
zypper refresh
zypper install john
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:security/15.6/home:mnhauke:security.repo
zypper refresh
zypper install john