- THC Hydra - Hydra is a parallelized login cracker which supports numerous protocols to attack. It is very fast and flexible, and new modules are easy to add. This tool makes it possible for researchers and security consultants to show how easy it would be to gain unauthorized access to a system remotely.
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ONLINE PASSWORD ATTACKS WITH MEDUSA, NCRACK AND HDYRA- Layout for this exercise:
![Hydra brute force 3389 Hydra brute force 3389](https://s-media-cache-ak0.pinimg.com/736x/28/a4/06/28a406de3389c84aa70f394087af4c5f.jpg)
- Online password attacks involve password-guessing attempts for networked services that use a username and password authentication scheme.
- This includes services such as HTTP, SSH, VNC, FTP, SNMP, POP3, etc.
- In order to be able to automate a password attack against a given networked service, we must be able to generate authentication requests for the specific protocol in use by that service.
- Tools such as Medusa, Ncrack, Hydra and even Metasploit can be used for that purpose.
- The same wordlist will be used along this exercise:
2 - Medusa for HTTP brute force attack
- Medusa is a command line speedy, massively parallel, modular, login brute-forcer, supporting services which allow remote authentication.
- Medusa supports HTTP, FTP, CVS, AFP, IMAP, MS SQL, MYSQL, NCP, NNTP, POP3, PostgreSQL, pcAnywhere, rlogin, SMB, rsh, SMTP, SNMP, SSH, SVN, VNC, VmAuthd and Telnet.
- While cracking the password, host, username and password can be flexible input while performing the attack.
- Efficiency of the tool depends on network connectivity; for instance on a local system, it can test 2000 passwords per minute.
- With Medusa it is possible to perform a parallel attack, for instance cracking passwords of a few email accounts simultaneously, specifying the username list along with the password list.
- Installation and further information here:
http://foofus.net/goons/jmk/tools/
http://foofus.net/goons/jmk/medusa/medusa.html
![Hydra brute force 3389 Hydra brute force 3389](https://a-static.mlcdn.com.br/210x210/torneira-eletrica-loren-easy-5500w-220v-lorenzetti/eletrorastro/3231674/c6232aaa2a0e96eccddac8cec563f7b0.jpg)
- In the next example Medusa is used to perform a brute force attack against an htaccess protected web directory.
- First of all, let's check that the target has got open the port 80:
- Launching medusa (option -T 10 means 10 threads) against the target the attack is successful:
3 - Ncrack for RDP brute force attack
- Ncrack is a high-speed network authentication cracking tool built to help companies secure their networks by proactively testing all their hosts and networking devices for poor passwords.
- Ncrack was designed using a modular approach, a command-line syntax similar to Nmap and a dynamic engine that can adapt its behaviour based on network feedback. It allows for rapid, yet reliable large-scale auditing of multiple hosts.
- Protocols supported by Ncrack include RDP, SSH, HTTP(S), SMB, POP3(S), VNC, FTP, SIP, Redis, PostgreSQL, MySQL, and Telnet.
- Ncrack is available for many different platforms, including Linux, *BSD, Windows and Mac OS X. There are already installers for Windows and Mac OS X and a universal source code tarball that can be compiled on every system.
- For download and further information:
https://nmap.org/ncrack/
- The attack is successful:
4 - Hydra for SSH brute force attack
Hydra Port 3389
- Hydra is a fast network logon password cracking tool.- It is available for Windows, Linux, Free BSD, Solaris and OS X, supporting many various network protocols like Asterisk, AFP, Cisco AAA, Cisco auth, Cisco enable, CVS, Firebird, FTP, HTTP-FORM-GET, HTTP-FORM-POST, HTTP-GET, HTTP-HEAD, HTTP-PROXY, HTTPS-FORM-GET, HTTPS-FORM-POST, HTTPS-GET, HTTPS-HEAD, HTTP-Proxy, ICQ, IMAP, IRC, LDAP, MS-SQL, MYSQL, NCP, NNTP, Oracle Listener, Oracle SID, Oracle, PC-Anywhere, PCNFS, POP3, POSTGRES, RDP, Rexec, Rlogin, Rsh, SAP/R3, SIP, SMB, SMTP, SMTP Enum, SNMP, SOCKS5, SSH (v1 and v2), Subversion, Teamspeak (TS2), Telnet, VMware-Auth, VNC and XMPP.
- Download Hydra here:
https://www.thc.org/thc-hydra/
- In the next example SSH credentials are attacked with Hydra.
- Checking that the SSH service is running at port 22 of the target:
- The attack is successful:
5 - Hydra for FTP brute force attack
- This attack is similar to the previous one, with the only difference that the attacked service is FTP working at port 21:
Hydra 3389
Hydra Brute Force 3389
- The attack is successful: