यह लिनक्स, सोलारिस, एचपीयूएक्स और डॉस / विंडोज के तहत चलता है।

उपयोग:

Viper v1.6 (Hale 05/12/2000) - C version by Frank4DD (05/05/2014)
Wiltered Fire - www.wilter.com/wf, incl. bugfixes by David C. Rankin

        -f     File to load password from (required unless using lsf)
        -u     Username to load from file (required unless using lsf)
        -lsf   Load saved file from previous session
        -pf    Save progress to file at update interval
        -rf #        Amount of time in hours to run for (default infinite)
        -c #         Character set from charset.ini to use (default 1)
        -pws #       Minimum password length (starting value, default 1)
        -pwl #       Maximum password length (default 8 - maximum 16)
        -ui #        Console update interval (in minutes - default 10)
        -v           Verbose output

उपयोग उदाहरण:

susie112:/home/me/viper-1.6/src # ./viper -f passwd -u root -ui 1 -v

Viper v1.6 (Hale 05/12/2000) - C version by Frank4DD (05/05/2014)
Wiltered Fire - www.wilter.com/wf, incl. bugfixes by David C. Rankin

Found: user root pw:reUJbHrFWYCQk
Found: Charset 0 in charset.ini
...command line parameters loaded.
Character set is 93 chars long
Starting crack on: Sun Oct  3 23:04:44 2009
Cracking for pass length 1 (93 possibilities)
Cracking for pass length 2 (8649 possibilities)
Cracking for pass length 3 (804357 possibilities)
Cracking for pass length 4 (7.48052e+07 possibilities)

[ Length: | Last:    | CPS:    | Time Spent:      | Time Remaining:  | Done:  ]
-------------------------------------------------------------------------------
[    4    |     kq2r |  150000 | 000d:00h:01m:00s | 000d:00h:07m:18s | 12.03% ]

 The password has been located.
 Username : root
 Password : test
 Started  : Sun Oct  3 23:04:44 2009
 Finished : Sun Oct  3 23:06:30 2009
 Duration : 000d:00h:01m:00s

Viper exiting...