Questions tagged [brute-force]

An attack using every possible input to attempt to produce the correct output. Typically the method of last resort when no weakness allows the use of a more restricted input set. E.g. trying all possible (or likely) passwords, in an attempt to guess the correct one.

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Efficient Way to Brute Force With Large Wordlist

I am considering attempting to perform an SSH brute force attack on my own device in order to test its security, but I have run into an issue with the wordlist. I know my own password format, as well ...
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Experiencing injection / brute force attacks

I'm handling a hosting services for website via WHM. Few months ago, I've been experiencing some automated attacks on the websites that I'm handling. See screenshots below: Are there any remedy for ...
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Some questions about protecting recovery seed for Trezor/Nano S

If someone stole recovery seed (24 words) but you would protect it with additional passphrase, is it likely they could brute force your passphrase? How many guesses can there be made per second? ...
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Key(session token) authentication vs default login/pass authentication

I am building web application and have an idea to build custom authentication system, which would be quick and secure. I do not want to use almost "default" login (email) / password combination. I ...
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Setting payload for email using burp intruder [closed]

I am setting up the burp intruder attack for email. For example, youremail@gmail.com Now when i added $ it takes youremail@gmail%2ecom so i am getting the result as email is invalid type. My aim is ...
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Brute force web page using Hydra [closed]

What is the problem in this command for hydra, it returns these errors: Command : hydra -l 950421521 -P /home/jarvis/Desktop/ams-2.lst 172.20.10.4 http-post-form "/login.aspx:&txtUserName=^USER^&...
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How customising a wordlist to make a bruteforce attack in leetspeak with hashcat or John the ripper

I'm trying to unlocking my encrypted external harddisk because I have lost my paper with the password. With the help of user3439894 I have a short program to injecting a wordlist and unlocking the ...
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Robots trying to login to Azure VM when SSH port is closed in manager

I have many robots trying to do SSH login in a Azure VM. In the resource manager SSH is disabled but attacker IPs are public, as you can see below, where I copy a log for auth.log (I have an Ubuntu ...
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Why IOS on IPhone cannot be brute-forced programatically? [duplicate]

I am interested in the recent Apple case where FBI wants to get access, but they say it's not technically possible other than creating a new OS (or I guess just modifying the existing one). More ...
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Brute forcing using hydra

I'm try to do brute force attack on a system and I have complete word list of the possible passwords because they use a really simple format but when I tried hydra with the following post responses, ...
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Prevent brute force attacks on web publishing logins

Presumably, if someone tries to brute force into your website's control panel at your web host's site - they will be throttled/locked-out etc. But what about the web publishing logins (Web-Deploy, ...
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How to prevent ddos and brute-force attack by restricting IP's on Wordpress website

I want to make wp-login.php and/or wp-admin accessible only from one country. If I want wp-login.php access only from USA then my approach from .htaccess is like below <Files wp-login.php> ...
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User Account Guessing [duplicate]

I'm doing some research on user account guessing, and wanted to ask a question about some "bad practices". My thought is generally this is a trade-off between great user functionality/UX and security....
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Showing CAPTCHA

I'd like to show a CAPTCHA to prevent brute forcing attempts, but I was thinking of showing it whenever a user fails for an invalid username/password combination after X attempts, regardless of ...
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Find hash-function if original and hash are given? [duplicate]

I was thinking whether or not you can find the hash function(s) used if you have the original message and the hash. So assume that no salt is used during the hashing process, just multiple hashing and ...
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Does restarting an encrypted session increase security and deter attacks?

When a user initiates a SSH connection for example, keys are exchanged and a session is established with a new "passphrase" each time. If an attacker were to attempt to brute force this connection, ...
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Brute Forcing/Mask attacking a WPA-2 handshake using hashcat [closed]

I captured a handshake of my mobile hostspot and have it in both .cap and .hccapx file formats. If I know that the person who's wifi I'm hacking is supposedly 'Dave', how do I put it into search ...
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Is 8 characters long password reset token strong enough

I am testing this website, in its password reset functionality it provides a link with a token like most websites, now i asked for multiple password reset links to see any pattern in tokens and this ...
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How to make wfuzz perform a request to retrieve CSRF token to include in the main request?

How to make wfuzz perform a request to retrieve CSRF token to include in the main request? I've previously used patator, which includes the options before_url and before_fgrep for performing a ...
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Password checking implementation: delay on unsuccessful attempts [duplicate]

What would be wrong with the username/password checker where the response is instantaneous for valid attempts but a pre-built time delay (say 1 sec) is used for unsuccessful ones? It would not slow ...
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NCrack bruteforcing for http-get using -iL options

How to do NCrack bruteforcing for http-get service using -iL (mass scan) options where server is having different port.
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Remote Desktop compromised

So roughly 2 weeks ago my Remote Desktop was compromised whilst I was actively interacting with my server via Rdp I was prompted with a disconnect status equal to “ Another user has connected to ...
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How long will it take to crack a hashed random string

If I generate 128 bit, 512 bit and 1024 bit random strings using either: A native rand() function (C, PHP, Python, etc) OpenSSL random bytes Hardware generated random number And hash the random ...
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Does the Loginizer WordPress plugin also limit XML-RPC-calls?

I learned about about XML-RPC and specifically XML-RPC in WordPress. Now, the safety of XML-RPC in WordPress this is disputed. But given, that I would like to continue using XML-RPC, in the most save ...
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PEAP MS-CHAPv2 brute force attack

I have a 802.1x switch and a client authenticated using PEAP-MS-CHAPv2. I sniffed the traffic using a HUB between the client and the switch. How can I use the captured informations to perform a brute-...
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How secure will it be to use “Google Docs long url” like authentication scheme for orders in my online shop? [duplicate]

For the sake of simplicity, instead of full-fledged authentication with login and password, I want to create "Google Docs long url" authentication scheme for my internet shop for the users. To let ...
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How to create combinations of a password [duplicate]

I don't remember my password, I can't remember exactly the variation. How can I brute force all the permutations of a word knowing the following conditions: Idea of the word (in my mind). Lower and/...
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569 views

Using THC Hydra to attack Cisco router

I am trying to do successfull attack on my cisco home router using THC Hydra. I already know a username/password(admin/admin). First with nmap I looked for open ports on router and only opened one ...
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What are the common features to identify Brute-Force attack from Apache log file?

There are various methods to find attack patterns for different types of attacks. Apache-scalp is one such tool, but the rule set is not available to find the brute-force attack pattern via regular ...
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Program for guessing a url [duplicate]

I had an old soundcloud account where i privated one of my songs. After many years, I would like to listen to the track, but i don't remember what email was linked to the account or the password. All ...
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260 views

Can a smartphone's PIN or password be brute-forced in an offline attack?

I know of exhaustive offline dictionary and brute-force attacks against any given online account, but can the same method be applied against phones, either Android/iPhones? Or would any such attack be ...
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Generate a wordlist with strings that have no repeated characters [duplicate]

I am attempting to do this with crunch, but any method would be fine. I want to generate combinations of 6 characters in which no character is repeated. Note that I don't mean the -d function, as that ...
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How to generate a bruteforce list? [duplicate]

I need a rather long dictionary to bruteforce with, following a specific pattern: I need it to combine words using the dictionary, to up to three words. It wouldn't be case sensitive, and it would use ...
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How is a birthday attack actually performed?

I thought I understood the birthday attack until I tried to actually implement it. Either I'm implementing it wrong, or there's something wrong with my interpretation of the resulting probabilities. ...
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Brute forcing the Veracrypt header with THC Hydra

I was advised to brute force the Veracrypt header with THC Hydra/Cygwin, but I don't know how to do that. Any help would be appreciated.
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What can attackers do to increase the rate of attempts in a brute-force attack as the number of attempts increases?

I am aware of this post (about Moore's Law and brute-force attack). Suppose is the number of brute-force attempts, we have . What I want to ask is the following: suppose an attacker started a brute-...
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How to mask attack a sha256 hash with following information using hashcat?

I am hashcat newbie and I want to crack a hash :) The answer is 1-15 (unknown) characters and it may contain 'a-z' 'A-Z' '0-9' and '_' . (A Twitter username) How may I mask attack a hash with above ...
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Brute-Forcing DVWA login page with hydra

I'm learning how to brute force web login pages with a popular brute force tool called "Hydra". I'm using Kali Linux (VirtualBox) to do this. I've installed DVWA (Damn Vulnerable Web Application) and ...
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Database logs have multiple “Logon Login failed for user” from different IPs

Background: I have an SQL Server database running on Amazon RDS The AWS dashboard has a section for logs and whenever I check the logs I see the following: 2018-04-27 06:10:26.00 Logon Error: 18456,...
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Hydra fails with “[ERROR] target ssh://192.168.16.128:22/ does not support password authentication.”?

I've updated Kali 2.0 to newest version - it is installed using VMWare. Now, every time I use hydra to brute-force SSH, I get the following error: [ERROR] target ssh://192.168.16.128:22/ does not ...
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How to bruteforce smime.p7m key

My information security teacher gave me homework - hack smime.p7m. He said that the key is simple and bruteforce will not take much time, but I can not find a utility to do this. Maybe you know these?
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Protect unauthenticated interface from guessing attacks

I am currently encountering a publically available interface; accessible at least via web form/webviews and some stateless protocol (presumably REST). In the past this form allowed you to view your ...
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Hydra returning error: “module option must start with http”

I am trying to brute force a web login password using hydra with the below command: hydra -s 8123 -x 2:8:aA1 -t 16 -m http://192.168.1.193 http-proxy I get [ERROR] module option must start with ...
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Kali Linux Hydra question

Recently a friend of mine coded a website and he asked me to brute force it to test it HTML code of the page trying to use hydra on https://pastebin.com/D2iQXrNb (use Pastebin because I don't know ...
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How do I change my IP Address after a specific number of loops in Python? [closed]

I have a for loop to brute force a Gmail account. But I've heard that Gmail's max attempts is 100. So how do I change my IP after 100 loops? Thanks in advance.
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Attacking encrypted storage vs attacking memory [duplicate]

I want to create a generative password manager. Generative password managers generate passwords based on seeds such as the master password and the website's URL. In contrast, most password managers ...
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Test a known list of possible Windows Remote Desktop credentials?

I've forgotten my password to my home server. It's a new Windows 2012R2 VM, I didn't change the maximum password age requirements in Group Policy DC (even tho I know I should have) until it was too ...
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Would it take long to brute force a md5 hash like this?

1be8917510-36.51929856278002 10bce1af27-99.18403192423284 103fa11cc6-87.21158325206488 Few examples above and as you can see the pattern is: 1xxxxxxxxx-{a percentage (0-100) to 14 decimal places} x ...
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hydra password penetration test syntax [duplicate]

I am trying to penetrate a password on my own website using hydra. Let's say that I know login and password and i just put both there like in sample below: hydra -l admin -p password 123.123.123.123 ...
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Is the password “Z” more secure than the password “a”? [duplicate]

Okay, I guess it's not possible to call one-letter-passwords "secure" - so let's compare ZZZZZZZZZZ with aaaaaaaaaa. Both are using the same character pool [A-z], so the number of combinations for a ...