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Welcome back, my hacker novitiates! In, I had introduced you to two essential tools for cracking online passwords—Tamper Data and THC-Hydra. In that guide, I promised to follow up with another tutorial on how to use THC-Hydra against web forms, so here we go. Although you can use Tamper Data for this purpose, I want to introduce you to another tool that is built into Kali, Burp Suite. Step 1: Open THC-Hydra So, let's get started. Fire up and open THC-Hydra from Applications - Kali Linux - Password Attacks - Online Attacks - hydra.
Step 2: Get the Web Form Parameters To be able to hack web form usernames and passwords, we need to determine the parameters of the web form login page as well as how the form responds to bad/failed logins. The key parameters we must identify are the:. IP Address of the website. URL. type of form. field containing the username. field containing the password.
failure message We can identify each of these using a proxy such as Tamper Data or Burp Suite. Step 3: Using Burp Suite Although we can use any proxy to do the job, including Tamper Data, in this post we will use Burp Suite. You can open Burp Suite by going to Applications - Kali Linux - Web Applications - Web Application Proxies - burpsuite. When you do, you should see the opening screen like below. Getting the failure message is key to getting THC-Hydra to work on web forms. In this case, it is a text-based message, but it won't always be.
At times it may be a cookie, but the critical part is finding out how the application communicates a failed login. In this way, we can tell THC-Hydra to keep trying different passwords; only when that message does not appear, have we succeeded. Step 5: Place the Parameters into Your THC Hydra Command Now, that we have the parameters, we can place them into the THC-Hydra command. The syntax looks like this: kali hydra -L -p So, based on the information we have gathered from Burp Suite, our command should look something like this: kali hydra -L -P 192.168.1.101 http-post-form '/dvwa/login.php:username=^USER^&password=^PASS^&Login=Login:Login failed' A few things to note. 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. 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.
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.
Step 6: Choose a Wordlist Now, we need to chose a wordlist. As with any dictionary attack, the wordlist is key. You can use a custom one made with of, but Kali has numerous wordlists built right in.
To see them all, simply type: kali locate wordlist In addition, there are numerous online sites with wordlists that can be up to 100 GB! Choose wisely, my hacker novitiates. 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 Command Now, 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' -V.
Final Thoughts Although THC-Hydra is an effective and excellent tool for online, when using it in web forms, it takes a bit of practice. The key to successfully using it in web forms is determining how the form responds differently to a failed login versus a successful login. In the example above, we identified the failed login message, but we could have identified the successful message and used that instead. 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' -V Also, some web servers will notice many rapid failed attempts at logging in and lock you out. In this case, you will want to use the wait function in THC-Hydra. This will add a wait between attempts so as not to trigger the lockout. 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 -V I 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! Cover image via Related. You should always give social engineering first priority b4 tryn brute force. Ucan always use phising sites but the quiZ is how du u get the victim get lured by ur trap. U need to spoof gmail maill. Lets say pretend ts an email from google telling them to modify password or sms spoof using the google numbers.
But if u can get physical access with the target pc, mayb u can do a dns spoof for a gmail or the target site. N ur target will hardly know whats going on, so my advice is that brut force should always b last option. Remembered anybod can be phised ur just need to know their weakness and exploit them.
Coz there is no patch fo human stupidity Reply. But my problem is that i know that my victims password is on 8 symbols and two of them is numbers. (no big letters) ¨ so i generated a custom wordlist just for that spesific situation with crunch. Now i just need to know the combination. But every website the victim are using has https and will proberly block me. How should i find out the combination then? Isn't there a way to slow down the attack so the website not are blocking me?
Cuz i would have the time to wait a little longer than. Hacking small useless websites, that nobody have in mind to use anyway doesn't help me to crack the big sites. I hope you have a solution Reply. Followed this tutorial to the T, but I'm still having issues. I keep getting '1 of 1 target successfully completed, 5 valid passwords found' (see below) when only ONE of those passwords is actually the valid one.
I'm trying this against a local Joomla 2.5 site on my home server. Here's more information from the Burp's two interceptions during login. I'm not entirely sure how to find out in which way it 'communicates' the failed attempt. You can get it using tamper data.
It's an addon. Go to addons and search for tamper data and install it. Then navigate to the login page and fill out the user name and password. Before clicking submit, open the tamper data tool and click 'start tamper'. Hit submit button on the website.
A pop up will ask you whether you'd like to tamper, discard, or submit. Then look through the entries in tamper data and click on it. It will give you the request along with the post data.
This works best if no other website is open; just the one you're trying to log into. Otherwise you're going to get a lot of pop ups asking you whether you'd like to tamper, in which case you could just discard, but it's harder to find request you're looking for.
Hope this helps. I saw OTW did an article about how to crack passwords using tamper data and hydra. It's the same concept as when using burp essentially. I'm sure it provides a better instruction Reply.
Hehe, im so funny. Jokes aside, I do have a question.
I have been following your tutorial and have installed DVWA locally on kali linux (Dual booted) and when I setup the proxy on Iceweasel, I cannot load any pages, not allowing Burp Suite to access any of the needed information. It loads for a bit, than quits. I took a picture of my proxy settings but it was to big so I put a link to it below. Also, sorry if this is the most obvious thing, im tired and have been at this for a while. Sorry for LQ, couldnt take a screenshot for a reason and used my phone. I know that this is really late, but I still hope you respond. I followed your tutorial and did everything, but I still have one problem.
I looked at the real time code for the website and attempted a fake login and it told me that the error message was 'error: 'Incorrect Password' '. When I put that into hydra it just came up with the screen you get when you open hydra. The command I'm using is hydra -l (the email) -P Desktop/wordlist.txt 54.215.131.188 http-post-form '/api/auth/login:data%5Busername%5D=^USER^&data%5Bpassword%5D=^USER^:error: 'Incorrect username.'
' -V Any help would be very much appreciated! Great tutorial.
I managed to get something similar to work on a test VPS I use to attack. The issue however is that the auth.log file shows my IP when simply using hydra. Therefore I tried using: 'hydra -s 22 -v -V -l root -P /usr/share/wordlists/testlist.txt -t 4 -w 60 SERVERIP ssh HYDRAPROXY=socks5://121.40.102.199:1080' and also tried using 'proxychains hydra -s 22 -v -V -l root -P /usr/share/wordlists/testlist.txt -t 4 -w 60 SERVERIP ssh' Howerver in both cases it said in the auth.log file: 'reverse mapping checking getaddrinfo for MYHOMEIP failed - POSSIBLE BREAK-IN ATTEMPT!' Can you explain why it has my home IP some how via 'reverse mapping? My proxychains list has about 15 proxies in it using dynamicchain.
Im very confused. Hi Thanks for the useful guide. However i dont manage to succeed.
Some help would be appreciated. Below a print of Burp results and the command line in Hydra. Hydra tells me after 'enter' the syntax rules but does not start the job. Also: i use Hydra with Cygwin on Windows 7. 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? Great tutorial.
However, I do not think this technique will work with a particular router I have. The router's login page uses a Java applet. Any idea how I can approach cracking the password.
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Using hydra SSH gives me an error of password authentication not supported. The IT department gave me a Motorola router (bought in 2010) to factory reset. The guy who set it up quit and did not document the password. There is no reset button, and when connected to the serrial port, pressing the ESC key while booting for factory firmware when loading does not work until it is too late. From what I understand, the IT guy who set this up was a real IT genious. Motorola will not help me with it without paying for support. Hey OTW and nice post as always:) Since i began researching about brute-forcing and wordlist attacks i have been very wondering if 'partial brute-force/wordlist attacks exist'.
A succesful brute-force attack against strong passwords may take hours, days and even weeks and it is undeniable that letting your computer operating for such long is not the best for the machine's health. And also if we take into consideration that most users do not change their passwords that often i think that diving your brute-force attempts could be a pretty good idea if you are not confident enough to let your machine operating 24/7. Isnt there a way to 'pause' the brute-force attack either by saving the line of the wordlist that you have stopped or maybe saving the last combination of characters and its length so you dont need to begin brute forcing again from the start? Sorry for my bad english:P Reply.