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changeme Build Status

A default credential scanner.

Basic Scan


changeme picks up where commercial scanners leave off. It focuses on detecting default and backdoor credentials and not necessarily common credentials. It's default mode is to scan HTTP default credentials, but has support for other credentials.

changeme is designed to be simple to add new credentials without having to write any code or modules. changeme keeps credential data separate from code. All credentials are stored in yaml files so they can be both easily read by humans and processed by changeme. Credential files can be created by using the ./ --mkcred tool and answering a few questions.

changeme supports the http/https, mssql, mysql, postgres, ssh, ssh w/key, snmp, mongodb and ftp protocols. Use ./ --dump to output all of the currently available credentials.

You can load your targets using a variety of methods, single ip address/host, subnet, list of hosts, nmap xml file and Shodan query. All methods except for Shodan are loaded as a positional argument and the type is inferred.


changeme has only been tested on Linux and has known issues on Windows and OS X/macOS. Use docker to run changeme on the unsupported platforms. It supports either a redis-backed queue (most stable) or an in-memory backed queue.

Stable versions of changeme can be found on the releases page.

For mssql support, unixodbc-dev needs to be installed prior to installing the pyodbc.

For postgres support, libpq-dev needs to be installed.

PhantomJS is required in your PATH for HTML report screenshots.

Use pip to install the required python modules: pip install -r requirements.txt


A convenient way of running changeme is to do so inside a Docker container. You can run a pre-built container from Docker Hub, or build your own using the instructions below.

Run changeme in Docker

Docker runs best in conjunction with Redis as a queue back end. Here's how to get a linked container setup working with Redis.

Get the latest containers: docker pull redis && docker pull ztgrace/changeme

Launch redis in the background: docker run -d --name redis1 redis

Start changeme linking the redis container by name and mounting a local directory into the container's /mnt directory: docker run -it -v /tmp/results:/mnt --link redis1:redis ztgrace/changeme:latest /bin/sh

Run changeme with a --redishost of redis and --output file in our mounted volume: ./ --redishost redis --output /tmp/mnt/results.csv --protocols ssh --threads 20 -d

Build from Dockerfile

  1. Build the docker container: docker build -t changeme .
  2. Run changeme from inside the container: `docker run -it changeme /bin/bash'

Usage Examples

Below are some common usage examples.

  • Scan a single host: ./
  • Scan a subnet for default creds: ./
  • Scan using an nmap file ./ subnet.xml
  • Scan a subnet for Tomcat default creds and set the timeout to 5 seconds: ./ -n "Apache Tomcat" --timeout 5
  • Use Shodan to populate a targets list and check them for default credentials: ./ --shodan_query "Server: SQ-WEBCAM" --shodan_key keygoeshere -c camera
  • Scan for SSH and known SSH keys: ./ --protocols ssh,ssh_key
  • Scan a host for SNMP creds using the protocol syntax: ./ snmp://

See Wiki Examples for more detailed examples.

Known Issues

The telnet scanner is broken.

Additionally, anything filed under as a bug.

Bugs and Enhancements

Bugs and enhancements are tracked at

Request a credential: Please add an issue to Github and apply the credential label.

Vote for a credential: If you would like to help us prioritize which credentials to add, you can add a comment to a credential issue.

Please see the wiki for more details.


Thanks for code contributions and suggestions.