hydra v8.9.1 released: Enhancements, bugfixes

THC-Hydra is a very fast (multi-threaded) network logon cracker which supports many different services: AFP, Cisco, cisco-enable, CVS, Firebird, ftp, http-get, http-head, http-proxy, https-get, https-head, https-form-get, https-form-post, ICQ, IMAP, IMAP-NTLM, ldap2, ldap3, MySQL, mysql, NCP, nntp, oracle-listener, PCAnywhere, pcnfs, pop3, pop3-NTLM, Postgres, rexec, rlogin, rsh, sapr3, sip, smb, smbnt, SMTP-auth, SMTP-auth-NTLM, SNMP, socks5, ssh2, svn, TeamSpeak, telnet, vmauthd, vnc.


Changelog 8.9.1

  • * Clarification for rdp error message
  • * CIDR notation (hydra -l test -p test ftp) was not detected, fixed


git clone https://github.com/vanhauser-thc/thc-hydra.git



make install


PROTOCOL is the protocol you want to use for attacking, e.g. ftp, smtp, http-get or many others are available TARGET is the target you want to attack MODULE-OPTIONS are optional values which are special per PROTOCOL module

FIRST – select your target you have three options on how to specify the target you want to attack:

  1. a single target on the command line: just put the IP or DNS address in
  2. a network range on the command line: CIDR specification like “”
  3. a list of hosts in a text file: one line per entry (see below)

SECOND – select your protocol Try to avoid telnet, as it is unreliable to detect a correct or false login attempt. Use a port scanner to see which protocols are enabled on the target.

THIRD – check if the module has optional parameters hydra -U PROTOCOL e.g. hydra -U smtp

FOURTH – the destination port this is optional! if no port is supplied the default common port for the PROTOCOL is used. If you specify SSL to use (“-S” option), the SSL common port is used by default.

If you use “://” notation, you must use “[” “]” brackets if you want to supply IPv6 addresses or CIDR (“”) notations to attack: hydra [some command line options] ftp://[]/ hydra [some command line options] -6 smtps://[2001:db8::1]/NTLM

Note that everything hydra does is IPv4 only! If you want to attack IPv6 addresses, you must add the “-6” command line option. All attacks are then IPv6 only!

If you want to supply your targets via a text file, you can not use the :// notation but use the old style and just supply the protocol (and module options): hydra [some command line options] -M targets.txt ftp You can supply also port for each target entry by adding “:” after a target entry in the file, e.g.:





Note that if you want to attach IPv6 targets, you must supply the -6 option and must put IPv6 addresses in brackets in the file(!) like this:





Copyright (C) vanhauser-thc