Re:Xerox Alto zero-day: cracking disk password protection on...
by Keyframe on Thursday January 04, 2018 @05:03PM
(#16074500)
Multiple ways to do it. All lead to you getting to the /etc/passwd file and the hash inside for the root.
If you have IRIX installation CD then you can even set the new password, but you probably don't have it? You can also put the disk into another SGI, also not what everyone has. If guest account is enabled, login with guest (no password) and just cat the /etc/passwd. If guest account is not enabled, you can do the cat via sash, which is a bit more compicated, like this: https://web.archive.org/web/20151023042224/http://crackaddic...
Once you have your hash, do it with John the Ripper (GPU version). Store the password int a text file in format of root:hash and run john the ripper on it. Encryption is, AFAIK, DES so use john --format=des passwd.txt if john doesn't autodetect which encryption it is (I remember I had to set it manually). It can take awhile, depending on the GPU, but not that long.
If you run into trouble, I can have a look. I think I wrote down somewhere what to do, in case I need it again.
If you have IRIX installation CD then you can even set the new password, but you probably don't have it? You can also put the disk into another SGI, also not what everyone has. If guest account is enabled, login with guest (no password) and just cat the /etc/passwd. If guest account is not enabled, you can do the cat via sash, which is a bit more compicated, like this: https://web.archive.org/web/20151023042224/http://crackaddic...
Once you have your hash, do it with John the Ripper (GPU version). Store the password int a text file in format of root:hash and run john the ripper on it. Encryption is, AFAIK, DES so use john --format=des passwd.txt if john doesn't autodetect which encryption it is (I remember I had to set it manually). It can take awhile, depending on the GPU, but not that long.
If you run into trouble, I can have a look. I think I wrote down somewhere what to do, in case I need it again.