Difference between revisions of "Unshadow, john"

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[[Main Page|Home]] > [[CentOS]] > [[CentOS 6.x]] > [[Penetration testing tools]] > [[John]] > [[Unshadow, john]]
=Using unshadow and john to crack Linux passwords=
=Using unshadow and john to crack Linux passwords=


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Note: John supports sessions and we can start interrupted john sessions from the same point. Use '<tt>john</tt>' to find about various command line options that john supports.
Note: John supports sessions and we can start interrupted john sessions from the same point. Use '<tt>john</tt>' to find about various command line options that john supports.
[[Main Page|Home]] > [[CentOS]] > [[CentOS 6.x]] > [[Penetration testing tools]] > [[John]] > [[Unshadow, john]]

Latest revision as of 16:37, 28 August 2022

Home > CentOS > CentOS 6.x > Penetration testing tools > John > Unshadow, john

Using unshadow and john to crack Linux passwords

We can use unshadow and john to crack Linux passwords in following manner:

  1. First use 'unshadow /etc/passwd /etc/shadow > hashes.txt' to get unified passwd files with password hashes in it. Historically '/etc/passwd' file used to store password hashes. Later '/etc/shadow' was introduced just to store hashes. Using this we get passwd file in old format.
  2. Then use 'john hashes.txt' to crack passwords.

Note: John supports sessions and we can start interrupted john sessions from the same point. Use 'john' to find about various command line options that john supports.


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