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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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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966 views

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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504 views

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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97 views

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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44 views

Hydra brute-force login with a timestamp

I am attempting to run a brute-force attack on my router just as a proof of concept and have hit a problem in that the POST request requires a parameter of the current timestamp. Here is my current ...
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Why can't Hash Suite list the username/hash pairs in my SAM file?

I recently started experimenting with Hash Suite Pro (v3.5.1). This is a Windows program that tests the security of password hashes. A problem that I'm already running into is that Hash Suite is ...
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wfuzz show --hs responses when it should hide it

Test site: http://testfire.net/login.jsp Error when login failed: Login Failed: We're sorry, but this username or password was not found in our system. Please try again. Web Form <form action="...
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how do i find the number of possible keys / password to decrypt a plain text

i like to know if there is any way to decrypt a plain-text that is encrypted 55 rounds using Caesar ciphers with different key for each round. and using brute force attack without knowing the length ...
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Difference between gobuster and dirbuster in performance

The only difference I am aware, is of CLI vs GUI. But I am curious to know as to what is the difference in their performance and what are the additional features in one tool compared to another?
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Tool to try and brute force decrypt a string by trying common algorithms? [duplicate]

I've got a string that I believe is encoded with a rather basic algorithm, but rather than trying them all 1 by 1 I'm wondering if there's a tool/website that can attempt to decode it using multiple ...
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Hydra Brute-force attack on Gitlab doesn't work!

I'm using hydra to test my organization's security since our GitLab is accessible online, I wanted to make sure the security of the login itself before implementing other types of security measure (e....
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Bruteforce different encodings

I have a hash $office$*2013*100000*256*16*664f9e0787392c2b1632d3947aaadee4*27dc7d029f76244a407acf9b5afa3740*ebbc055ae08124f6a6be81ef812da4fece16b2ad86eede3916d9cda15f71833f password: лl My wordlist:...
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Preventing automated attacks on Tokens without relying on Firewall or Network Infrastructure

Our concern is more on application side prevention automated attacks. Although the firewall does it part to help prevent this, it has been mandated in our development team's security practices that we ...
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1answer
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Using Patator ssh_login module how can I get the output to show only on success

I have the following command: patator ssh_login host=<ip> port=<port> user=<user> password=FILE0 0=<path to pwdlist> I would like to output the success result only and not ...
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Is using “Signature Versioning” in Amazon S3 a secure way of selling ebooks?

I own an ecommerce platform that sells large (500 megabyte+) ebooks. To reduce server costs I am looking at hosting the ebooks on S3 and using Sendowl/ FetchApp to create the links to the downloads. ...
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What would be the algorithm that would be used to Brute Force Blowfish Encryption?

For my science fair project, I will be researching the algorithm for encrypting data using the Blowfish Encryption technique. Suppose I have a word I would like to encrypt using this method called "...
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Is the WPS implementation for Wifi Direct on Amazon Fire Stick secure?

Specifically: Does the fire-stick use PIN method or push-button method for its Wifi Direct implementation? From my experience using the Fire Stick for mirroring an Android phone, I would guess it is ...
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Bruteforce directory with Burp : 2 parameters used in 3 step macro for intruder

I try to bruteforce paths with Burp intruder but to do so I have to be authenticated and have a valid CSRF token (transmitted as a GET parameter). So what I want to do is : Call the login page to ...
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How hackers bruteforce web logins when password attempts are limited? [duplicate]

I read about password brute force attacks, but I wonder how hackers try this attack when developers limit password attempts.
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287 views

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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19 views

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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1answer
68 views

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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129 views

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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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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1answer
191 views

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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1answer
1k 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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1answer
621 views

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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1answer
491 views

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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215 views

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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481 views

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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2answers
336 views

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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119 views

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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127 views

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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1answer
560 views

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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1answer
2k views

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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1answer
1k views

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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270 views

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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228 views

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 ...
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43 views

How can I determine the encryption used by knowing input and result? [duplicate]

Is it possible to determine the encryption or hash used if I know the original input and final output? There is a similar post here: Determine encoding/hashing methods used based on knowing the input ...
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1answer
100 views

Can bruteforce attacks be prevented with tables of valid inputs?

Can this method of encryption prevent bruteforce attacks? If I had a hypothetical table (or function) where every grammatically valid sentence (limited to some number of words) was given an ...
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7answers
4k views

Are passwords made up from concatenating a few foreign words better than shorter random characters? [duplicate]

Does it make sense to insert a foreign word into a paraphrase to mitigate against brute force? For example: "pussiMeansCatInEskimo" "caballoMeansHorse" "CatIsGatto" "SalopeMeansBitch" "...
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Can brute force or dictionary attacks be detected when using the WiFi protocol?

Can the WiFi protocol recognize when a brute force or dictionary attack on it is occurring? WiFi gives the user an authentication failed message after entering an incorrect WiFi password several times....
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2answers
170 views

How secure is a 4 digit numbers only captcha? [closed]

How secure is a 4 digit numbers only captcha? How many tries will take to be able to bruteforce that captcha?
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1answer
716 views

How do I find out how long a password is for a 7zip aes 256 encryption? [closed]

I lost password to a 7zip, nothing important in it. But i'll still like to access it. I heard there is a way to find out how long the password is, but I dont know how.
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2answers
4k views

Calculating permutations of a hexadecimal character set [closed]

How long would it take to run through all permutations/combinations of a ten character set; assuming the character-set is limited to a hexadecimal alphabet? (i.e. 16 characters {0..9}{A..F}; eg. ...
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1answer
4k views

How long does it take to crack a 100-letter long winrar password? [closed]

i´m interested in how long time it would take for a super computer dedicated to crack to crack a 100-letter long winrar password. The password contains Lowercase, Uppercase, Digits, ...