# Attacking Common Services ## Interacting with Common Services ### **Windows CMD - Findstr** ```cmd-session c:\htb>findstr /s /i cred n:\*.* n:\Contracts\private\secret.txt:file with all credentials n:\Contracts\private\credentials.txt:admin:SecureCredentials! ``` We can find more `findstr` examples [here](https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/findstr#examples). ### **Linux - Mount** ```shell-session eldeim@htb[/htb]$ sudo mkdir /mnt/Finance eldeim@htb[/htb]$ sudo mount -t cifs -o username=plaintext,password=Password123,domain=. //192.168.220.129/Finance /mnt/Finance ``` As an alternative, we can use a credential file. > Note: We need to install `cifs-utils` to connect to an SMB share folder. To install it we can execute from the command line `sudo apt install cifs-utils`. ```shell-session eldeim@htb[/htb]$ mount -t cifs //192.168.220.129/Finance /mnt/Finance -o credentials=/path/credentialfile ``` The file `credentialfile` has to be structured like this: ```txt username=plaintext password=Password123 domain=. ``` ### **Linux - Find** ```shell-session [!bash!]$ find /mnt/Finance/ -name *cred* /mnt/Finance/Contracts/private/credentials.txt ``` Next, let's find files that contain the string `cred`: ```shell-session [!bash!]$ grep -rn /mnt/Finance/ -ie cred /mnt/Finance/Contracts/private/credentials.txt:1:admin:SecureCredentials! /mnt/Finance/Contracts/private/secret.txt:1:file with all credentials ``` ## Command Line Utilities - **MySQL** ### **Linux - SQSH** ```shell-session eldeim@htb[/htb]$ sqsh -S 10.129.20.13 -U username -P Password123 ``` The `sqlcmd` utility lets you enter Transact-SQL statements, system procedures, and script files through a variety of available modes: * At the command prompt. * In Query Editor in SQLCMD mode. * In a Windows script file. * In an operating system (Cmd.exe) job step of a SQL Server Agent job. ### **Windows - SQLCMD** ```cmd-session C:\htb> sqlcmd -S 10.129.20.13 -U username -P Password123 ``` To learn more about `sqlcmd` usage, you can see [Microsoft documentation](https://docs.microsoft.com/en-us/sql/ssms/scripting/sqlcmd-use-the-utility). ### **Linux - MySQL** ```shell-session eldeim@htb[/htb]$ mysql -u username -pPassword123 -h 10.129.20.13 ``` We can easily start an interactive SQL Session using Windows: ### **Windows - MySQL** ```cmd-session C:\htb> mysql.exe -u username -pPassword123 -h 10.129.20.13 ``` *** ## **Tools to Interact with Common Services** | **SMB** | **FTP** | **Email** | **Databases** | | ---------------------------------------------------------------------------------------- | ------------------------------------------- | -------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------- | | [smbclient](https://www.samba.org/samba/docs/current/man-html/smbclient.1.html) | [ftp](https://linux.die.net/man/1/ftp) | [Thunderbird](https://www.thunderbird.net/en-US/) | [mssql-cli](https://github.com/dbcli/mssql-cli) | | [CrackMapExec](https://github.com/byt3bl33d3r/CrackMapExec) | [lftp](https://lftp.yar.ru/) | [Claws](https://www.claws-mail.org/) | [mycli](https://github.com/dbcli/mycli) | | [SMBMap](https://github.com/ShawnDEvans/smbmap) | [ncftp](https://www.ncftp.com/) | [Geary](https://wiki.gnome.org/Apps/Geary) | [mssqlclient.py](https://github.com/SecureAuthCorp/impacket/blob/master/examples/mssqlclient.py) | | [Impacket](https://github.com/SecureAuthCorp/impacket) | [filezilla](https://filezilla-project.org/) | [MailSpring](https://getmailspring.com/) | [dbeaver](https://github.com/dbeaver/dbeaver) | | [psexec.py](https://github.com/SecureAuthCorp/impacket/blob/master/examples/psexec.py) | [crossftp](http://www.crossftp.com/) | [mutt](http://www.mutt.org/) | [MySQL Workbench](https://dev.mysql.com/downloads/workbench/) | | [smbexec.py](https://github.com/SecureAuthCorp/impacket/blob/master/examples/smbexec.py) | | [mailutils](https://mailutils.org/) | [SQL Server Management Studio or SSMS](https://docs.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms) | | | | [sendEmail](https://github.com/mogaal/sendemail) | | | | | [swaks](http://www.jetmore.org/john/code/swaks/) | | | | | [sendmail](https://en.wikipedia.org/wiki/Sendmail) | | ### Service Misconfigurations ```shell-session admin:admin admin:password admin: root:12345678 administrator:Password ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://eldeim.gitbook.io/brain_fuck/notes/certifications/eastereggs/htb-cpts/attacking-common-services.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.