Kali Linux

ZipExec : A Unique Technique To Execute Binaries From A Password Protected Zip

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.

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.

R K

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