ZipExec – Execute binaries from a password protected zip

ZipExec

ZipExec


ZipExec is a Proof-of-Concept (POC) tool to wrap binary-based tools into a password-protected zip file. This zip file is then base64 encoded into a string that is rebuilt on disk. This encoded string is then loaded into a JScript file that when executed, would rebuild the password-protected zip file on disk and execute it. This is done programmatically by using COM objects to access the GUI-based functions in Windows via the generated JScript loader, executing the loader inside the password-protected zip without having to unzip it first. By password protecting the zip file, it protects the binary from EDRs and disk-based or anti-malware scanning mechanisms.

zip

Installation

The first step as always is to clone the repo. Before you compile ZipExec you’ll need to install the dependencies. To install them, run following commands:

go get github.com/yeka/zip

Then build it

go build ZipExec.go

or

go get github.com/Tylous/ZipExec

Help

./ZipExec -h

__________.__      ___________                     
\____    /|__|_____\_   _____/__  ___ ____   ____  
  /     / |  \____ \|    __)_\  \/  // __ \_/ ___\ 
 /     /_ |  |  |_> >        \>    <\  ___/\  \___ 
/_______ \|__|   __/_______  /__/\_ \\___  >\___  >
        \/   |__|          \/      \/    \/     \/ 
                (@Tyl0us)

Usage of ./ZipExec:
  -I string
        Path to the file containing binary to zip.
  -O string
        Name of output file (e.g. loader.js)
  -sandbox
        Enables sandbox evasion using IsDomainedJoined.