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A simple IMAP password sprayer.

Introduction

This tool performs password spraying against an IMAP server with support for SSL connections and socks proxy.

For Gmail and O365, imapsprayer implements a simple heuristic for detecting cases when credential is valid but access is denied for some reason (application specific password, MFA, account blocked).

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

Requirements

Python 3.9 or later is necessary because of recent changes in imaplib built-in package.

Installing

First, clone the repository

git clone https://github.com/yok4i/imapsprayer.git

Once inside it, run poetry to install the dependencies

poetry install

Alternatively, you can install them with pip

pip install -r requirements.txt

Help

Use -h to show the help menu

poetry run ./imapsprayer -h

usage: imapsprayer.py [-h] -t TARGET [--port PORT] [--ssl] (-u USERNAME | -U FILE) (-p PASSWORD | -P FILE)
                      [-o OUTPUT] [-x PROXY] [--sleep SLEEP] [--jitter JITTER] --lockout LOCKOUT
                      [--timeout TIMEOUT] [--slack SLACK] [-s] [-v]

A simple IMAP password sprayer.

optional arguments:
  -h, --help            show this help message and exit
  -t TARGET, --target TARGET
                        Target host (required)
  --port PORT           Target port (default 993 when using --ssl, 143 otherwise)
  --ssl                 Connect to server over an SSL encrypted socket
  -u USERNAME, --username USERNAME
                        Single username
  -U FILE, --usernames FILE
                        File containing usernames
  -p PASSWORD, --password PASSWORD
                        Single password
  -P FILE, --passwords FILE
                        File containing passwords
  -o OUTPUT, --output OUTPUT
                        Output file (default: valid_creds.txt)
  -x PROXY, --proxy PROXY
                        Proxy to pass traffic through: <scheme://ip:port>
  --sleep SLEEP         Sleep time (in seconds) between each iteration (default: 0)
  --jitter JITTER       Max jitter (in seconds) to be added to sleep time (default: 0)
  --lockout LOCKOUT     Lockout policy reset time (in minutes) (required)
  --timeout TIMEOUT     Socket timeout, in seconds (default: None)
  --slack SLACK         Slack webhook for sending notifications (default: None)
  -s, --shuffle         Shuffle user list
  -v, --verbose         Verbose output

Examples

Test a single credential

poetry run ./imapsprayer.py -t imap.contoso.com -u [email protected] -p mypassword --lockout 1 --ssl --timeout 10

Perform password spraying using a proxy and waiting 30 minutes between each password iteration

poetry run ./imapsprayer.py -U emails.txt -P passwords.txt --proxy socks5://127.0.0.1:9050 --lockout 30

Note

Only socks proxies supported.

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

License

This project is licensed under the MIT License - see the LICENSE file for details

Disclaimer

This tool is intended for educational purpose or for use in environments where you have been given explicit/legal authorization to do so.