
Encontre a instância do Microsoft Exchange para um determinado domínio e identifique a versão exata
O ExchangeFinder é uma ferramenta simples e de código aberto que tenta encontrar uma instância do Micrsoft Exchange para um determinado domínio com base nos principais nomes DNS comuns para o Microsoft Exchange.
O ExchangeFinder pode identificar a versão exata do Microsoft Exchange desde Microsoft Exchange 4.0 até Microsoft Exchange Server 2019.
O ExchangeFinder primeiro tentará resolver qualquer subdomínio comumente usado para servidores Exchange, em seguida, enviará algumas requisições HTTP para analisar o conteúdo da resposta enviada pelo servidor e identificar se está usando o Microsoft Exchange ou não.
Atualmente, a ferramenta possui uma assinatura de cada versão do Microsoft Exchange desde Microsoft Exchange 4.0 até Microsoft Exchange Server 2019, e com base na versão de compilação enviada pelo Exchange através do cabeçalho X-OWA-Version podemos identificar a versão exata.
Se a ferramenta encontrar uma instância válida do Microsoft Exchange, ela retornará os seguintes resultados:
Clone a versão mais recente do ExchangeFinder usando o seguinte comando:
git clone https://github.com/mhaskar/ExchangeFinder
E então instale todos os requisitos usando o comando poetry install.
┌──(kali㉿kali)-[~/Desktop/ExchangeFinder]
└─$ poetry install 1 ⨯
Installing dependencies from lock file
Package operations: 15 installs, 0 updates, 0 removals
• Installing pyparsing (3.0.9)
• Installing attrs (22.1.0)
• Installing certifi (2022.6.15)
• Installing charset-normalizer (2.1.1)
• Installing idna (3.3)
• Installing more-itertools (8.14.0)
• Installing packaging (21.3)
• Installing pluggy (0.13.1)
• Installing py (1.11.0)
• Installing urllib3 (1.26.12)
• Installing wcwidth (0.2.5)
• Installing dnspython (2.2.1)
• Installing pytest (5.4.3)
• Installing requests (2.28.1)
• Installing termcolor (1.1.0)
Installing the current project: ExchangeFinder (0.1.0)
┌──(kali㉿kali)-[~/Desktop/ExchangeFinder]
┌──(kali㉿kali)-[~/Desktop/ExchangeFinder]
└─$ python3 exchangefinder.py
______ __ _______ __
/ ____/ __/ /_ ____ _____ ____ ____ / ____(_)___ ____/ /__ _____
/ __/ | |/_/ __ \/ __ `/ __ \/ __ `/ _ \/ /_ / / __ \/ __ / _ \/ ___/
/ /____> </ / / / /_/ / / / / /_/ / __/ __/ / / / / / /_/ / __/ /
/_____/_/|_/_/ /_/\__,_/_/ /_/\__, /\___/_/ /_/_/ /_/\__,_/\___/_/
/____/
Find that Microsoft Exchange server ..
[-] Please use --domain or --domains option
┌──(kali㉿kali)-[~/Desktop/ExchangeFinder]
└─$
Você pode usar a opção -h para exibir o banner de ajuda:
askar•/opt/redteaming/ExchangeFinder(main⚡)» python3 exchangefinder.py -h
______ __ _______ __
/ ____/ __/ /_ ____ _____ ____ ____ / ____(_)___ ____/ /__ _____
/ __/ | |/_/ __ \/ __ `/ __ \/ __ `/ _ \/ /_ / / __ \/ __ / _ \/ ___/
/ /____> </ / / / /_/ / / / / /_/ / __/ __/ / / / / / /_/ / __/ /
/_____/_/|_/_/ /_/\__,_/_/ /_/\__, /\___/_/ /_/_/ /_/\__,_/\___/_/
/____/
Find that Microsoft Exchange server ..
usage: exchangefinder.py [-h] [--domain DOMAIN] [--domains DOMAINS] [--useragent USERAGENT] [--output OUTPUT] [--verbose]
DNSStager main parser
optional arguments:
-h, --help show this help message and exit
--domain DOMAIN The target domain you want to scan (example.com)
--domains DOMAINS Path to domains file you want to scan (domains.txt)
--useragent USERAGENT
Useragent to use, the default is "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36."
--output OUTPUT Export results to given .csv file
--verbose Show detailed output
askar•/opt/redteaming/ExchangeFinder(main⚡)»
Para escanear um único domínio, você pode usar a opção --domain da seguinte forma:
askar•/opt/redteaming/ExchangeFinder(main⚡)» python3 exchangefinder.py --domain dummyexchangetarget.com
______ __ _______ __
/ ____/ __/ /_ ____ _____ ____ ____ / ____(_)___ ____/ /__ _____
/ __/ | |/_/ __ \/ __ `/ __ \/ __ `/ _ \/ /_ / / __ \/ __ / _ \/ ___/
/ /____> </ / / / /_/ / / / / /_/ / __/ __/ / / / / / /_/ / __/ /
/_____/_/|_/_/ /_/\__,_/_/ /_/\__, /\___/_/ /_/_/ /_/\__,_/\___/_/
/____/
Find that Microsoft Exchange server ..
[!] Scanning domain dummyexchangetarget.com
[+] The following MX records found for the main domain
10 mx01.dummyexchangetarget.com.
[!] Scanning host (mail.dummyexchangetarget.com)
[+] IIS server detected (https://mail.dummyexchangetarget.com)
[!] Potential Microsoft Exchange Identified
[+] Microsoft Exchange identified with the following details:
Domain Found : https://mail.dummyexchangetarget.com
Exchange version : Exchange Server 2016 CU22 Nov21SU
Login page : https://mail.dummyexchangetarget.com/owa/auth/logon.aspx?url=https%3a%2f%2fmail.dummyexchangetarget.com%2fowa%2f&reason=0
IIS/Webserver version: Microsoft-IIS/10.0
[!] Scanning host (autodiscover.dummyexchangetarget.com)
[+] IIS server detected (https://autodiscover.dummyexchangetarget.com)
[!] Potential Microsoft Exchange Identified
[+] Microsoft Exchange identified with the following details:
Domain Found : https://autodiscover.dummyexchangetarget.com
Exchange version : Exchange Server 2016 CU22 Nov21SU
Login page : https://autodiscover.dummyexchangetarget.com/owa/auth/logon.aspx?url=https%3a%2f%2fautodiscover.dummyexchangetarget.com%2fowa%2f&reason=0
IIS/Webserver version: Microsoft-IIS/10.0
askar•/opt/redteaming/ExchangeFinder(main⚡)»

Para escanear múltiplos domínios (alvos), você pode usar a opção --domains e escolher um arquivo da seguinte forma:
askar•/opt/redteaming/ExchangeFinder(main⚡)» python3 exchangefinder.py --domains domains.txt
______ __ _______ __
/ ____/ __/ /_ ____ _____ ____ ____ / ____(_)___ ____/ /__ _____
/ __/ | |/_/ __ \/ __ `/ __ \/ __ `/ _ \/ /_ / / __ \/ __ / _ \/ ___/
/ /____> </ / / / /_/ / / / / /_/ / __/ __/ / / / / / /_/ / __/ /
/_____/_/|_/_/ /_/\__,_/_/ /_/\__, /\___/_/ /_/_/ /_/\__,_/\___/_/
/____/
Find that Microsoft Exchange server ..
[+] Total domains to scan are 2 domains
[!] Scanning domain externalcompany.com
[+] The following MX records found for the main domain
20 mx4.linfosyshosting.nl.
10 mx3.linfosyshosting.nl.
[!] Scanning host (mail.externalcompany.com)
[+] IIS server detected (https://mail.externalcompany.com)
[!] Potential Microsoft Exchange Identified
[+] Microsoft Exchange identified with the following details:
Domain Found : https://mail.externalcompany.com
Exchange version : Exchange Server 2016 CU22 Nov21SU
Login page : https://mail.externalcompany.com/owa/auth/logon.aspx?url=https%3a%2f%2fmail.externalcompany.com%2fowa%2f&reason=0
IIS/Webserver version: Microsoft-IIS/10.0
[!] Scanning domain o365.cloud
[+] The following MX records found for the main domain
10 mailstore1.secureserver.net.
0 smtp.secureserver.net.
[!] Scanning host (mail.o365.cloud)
[+] IIS server detected (https://mail.o365.cloud)
[!] Potential Microsoft Exchange Identified
[+] Microsoft Exchange identified with the following details:
Domain Found : https://mail.o365.cloud
Exchange version : Exchange Server 2013 CU23 May22SU
Login page : https://mail.o365.cloud/owa/auth/logon.aspx?url=https%3a%2f%2fmail.o365.cloud%2fowa%2f&reason=0
IIS/Webserver version: Microsoft-IIS/8.5
askar•/opt/redteaming/ExchangeFinder(main⚡)»

Observe que os exemplos usados nas capturas de tela são resolvidos apenas no laboratório
Esta ferramenta é muito simples e eu a estava usando para economizar algum tempo ao procurar instâncias do Microsoft Exchange, sinta-se à vontade para abrir um PR se encontrar algum problema ou tiver algo novo para adicionar.
Este projeto está licenciado sob a licença GPL-3.0 - consulte o arquivo LICENSE para obter detalhes.