hashcat: add page (#5900)

pages/linux/hashcat.md

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+# hashcat
+
+> Fast and advanced password recovery tool.
+> More information: <https://manned.org/hashcat>.
+
+- Perform a brute-force attack (mode 3) with the default hashcat mask:
+
+`hashcat --hash-type {{hash_type_id}} --attack-mode {{3}} {{hash_value}}`
+
+- Perform a brute-force attack (mode 3) with a known pattern of 4 digits:
+
+`hashcat --hash-type {{hash_type_id}} --attack-mode {{3}} {{hash_value}} "{{?d?d?d?d}}"`
+
+- Perform a brute-force attack (mode 3) using at most 8 of all printable ASCII characters:
+
+`hashcat --hash-type {{hash_type_id}} --attack-mode {{3}} --increment {{hash_value}} "{{?a?a?a?a?a?a?a?a}}"`
+
+- Perform a dictionary attack (mode 0) using the RockYou wordlist of a Kali Linux box:
+
+`hashcat --hash-type {{hash_type_id}} --attack-mode {{0}} {{hash_value}} {{/usr/share/wordlists/rockyou.txt}}`
+
+- Perform a rule based dictionary attack (mode 0) using the RockYou wordlist mutated with common password variations:
+
+`hashcat --hash-type {{hash_type_id}} --attack-mode {{0}} --rules-file {{/usr/share/hashcat/rules/best64.rule}} {{hash_value}} {{/usr/share/wordlists/rockyou.txt}}`
+
+- Perform a combination attack (mode 1) using the concatenation of words from two different custom dictionaries:
+
+`hashcat --hash-type {{hash_type_id}} --attack-mode {{1}} {{hash_value}} {{/path/to/dictionary1.txt}} {{/path/to/dictionary2.txt}}`
+
+- Show result of an already cracked hash:
+
+`hashcat --show {{hash_value}}`