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A comment on Xerox Alto zero-day: cracking disk password protection on a 45 year old system. Parent comment

Re:Xerox Alto zero-day: cracking disk password protection on... by atkbrah on Thursday January 04, 2018 @06:50PM (#16075211)
You will need /etc/passwd file from SGI the disk. Either use irix installation CDs or boot the system over network [1]. You could also try booting openbsd [2] to get your hands to it.

Next you would use something like hashcat [3] to bruteforce the password.

1. http://software.majix.org/irix/install-network.shtml

2. https://ftp.openbsd.org/pub/OpenBSD/6.2/sgi/INSTALL.sgi

3. https://hashcat.net/hashcat/

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