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Finding secrets in GitHub is nothing new. There are many great tools available to help with this depending on which side of the fence you sit. On the adversarial side, popular tools such as gitrob and truggleHog focus on digging in to commit history to find secret tokens from specific repositories, users or organisations. On the defensive side, GitHub themselves are actively scanning for secrets through their token scanning project. Their objective is to identify secret tokens within committed code in real-time and notify the service provider to action. So in theory, if any AWS secret keys are committed to GitHub, Amazon will be notified and automatically revoke them.
I developed shhgit to raise awareness and bring to life the prevalence of this issue. I hope GitHub will do more to prevent bad actors using the treasure trove of information across the platform. I don't know the inner-workings of their token scanning project but delaying the real-time feed API until the pipeline has completed and posing SLAs on the providers seems like a step in the right direction.
With some tweaking of the signatures, shhgit would make an awesome addition to your bug bounty toolkit.
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Installation
You can use the precompiled binaries or allow Go to build from source:
- Install Go for your platform.
go get github.com/eth0izzle/shhgit will download and build shhgit automatically. Optionally you can clone this repository manually and run GO111MODULE=on CGO_ENABLED=0 go build -v -i -o shhgit.- See usage.
Or you can run from Docker:
- Grab a copy of the config.yaml and insert your GitHub credentials (see Usage).
docker run -v $(pwd)/config.yaml:/config.yaml:ro eth0izzle/shhgit
Usage
shhgit can work in two ways: through the GitHub, GitLab, and BitBucket public repositories or by processing files in a local directory.
By default, shhgit will run in the former 'public mode' and needs to access the public GitHub API. You will need to obtain and provide an access token. The API has a hard rate limit of 5,000 requests per hour per account, regardless of what token is used. The more account-unique tokens you provide, the faster you can process the events. Follow this guide to generate a token; it doesn't require any scopes or permissions. And then place it under github_access_tokens in config.yaml. Note that it is against the GitHub terms to bypass their rate limits. Use multiple tokens at your own risk.
Unlike other tools, you don't need to pass any targets with shhgit. Simply run $ shhgit to start watching GitHub commits and find secrets or sensitive files matching the included 120 signatures. You can also forgo the signatures and use shhgit with a search query, e.g. to find all AWS keys you could use shhgit --search-query AWS_ACCESS_KEY_ID=AKIA
To run in local mode (and perhaps integrate into your CI pipelines) you can pass the --local flag (see Usage below).
Options
--clone-repository-timeout
Maximum time it should take to clone a repository in seconds (default 10)
--config-path
Searches for config.yaml from given directory. If not set, tries to find if from shhgit binary's and current directory
--csv-path
Specify a path if you want to write found secrets to a CSV. Leave blank to disable
--debug
Print debugging information
--entropy-threshold
Finds high entropy strings in files. Higher threshold = more secret secrets, lower threshold = more false positives. Set to 0 to disable entropy checks (default 5.0)
--local
Specify local directory (absolute path) which to scan. Scans only given directory recursively. No need to have Github tokens with local run.
--maximum-file-size
Maximum file size to process in KB (default 512)
--maximum-repository-size
Maximum repository size to download and process in KB) (default 5120)
--minimum-stars
Only clone repositories with this many stars or higher. Set to 0 to ignore star count (default 0)
--path-checks
Set to false to disable file name/path signature checking, i.e. just match regex patterns (default true)
--process-gists
Watch and process Gists in real time. Set to false to disable (default true)
--search-query
Specify a search string to ignore signatures and filter on files containing this string (regex compatible)
--silent
Suppress all output except for errors
--temp-directory
Directory to store repositories/matches (default "%temp%\shhgit")
--threads
Number of concurrent threads to use (default number of logical CPUs)
Config
The config.yaml file has 7 elements. A default is provided.
github_access_tokens: # provide at least one token
- 'token one'
- 'token two'
webhook: '' # URL to a POST webhook.
webhook_payload: '' # Payload to POST to the webhook URL
blacklisted_extensions: [] # list of extensions to ignore
blacklisted_paths: [] # list of paths to ignore
blacklisted_entropy_extensions: [] # additional extensions to ignore for entropy checks
signatures: # list of signatures to check
- part: '' # either filename, extension, path or contents
match: '' # simple text comparison (if no regex element)
regex: '' # regex pattern (if no match element)
name: '' # name of the signature
Signatures
shhgit comes with 120 signatures. You can remove or add more by editing config.yaml.
Chef private key, Potential Linux shadow file, Potential Linux passwd file, Docker configuration file, NPM configuration file, Environment configuration file, Contains a private key, AWS Access Key ID Value, AWS Access Key ID, AWS Account ID, AWS Secret Access Key, AWS Session Token, Artifactory, CodeClimate, Facebook access token, Google (GCM) Service account, Stripe API key, Google OAuth Key, Google Cloud API Key
Google OAuth Access Token, Picatic API key, Square Access Token, Square OAuth Secret, PayPal/Braintree Access Token, Amazon MWS Auth Token, Twilo API Key, MailGun API Key, MailChimp API Key, SSH Password, Outlook team, Sauce Token, Slack Token, Slack Webhook, SonarQube Docs API Key, HockeyApp, Username and password in URI, NuGet API Key, Potential cryptographic private key, Log file, Potential cryptographic key bundle, Potential cryptographic key bundle
Potential cryptographic key bundle, Potential cryptographic key bundle, Pidgin OTR private key, OpenVPN client configuration file, Azure service configuration schema file, Remote Desktop connection file, Microsoft SQL database file, Microsoft SQL server compact database file, SQLite database file, SQLite3 database file, Microsoft BitLocker recovery key file
Microsoft BitLocker Trusted Platform Module password file, Windows BitLocker full volume encrypted data file, Java keystore file, Password Safe database file, Ruby On Rails secret token configuration file, Carrierwave configuration file, Potential Ruby On Rails database configuration file, OmniAuth configuration file, Django configuration file
1Password password manager database file, Apple Keychain database file, Network traffic capture file, GnuCash database file, Jenkins publish over SSH plugin file, Potential Jenkins credentials file, KDE Wallet Manager database file, Potential MediaWiki configuration file, Tunnelblick VPN configuration file, Sequel Pro MySQL database manager bookmark file, Little Snitch firewall configuration file, Day One journal file, Potential jrnl journal file, Chef Knife configuration file, cPanel backup ProFTPd credentials file
Robomongo MongoDB manager configuration file, FileZilla FTP configuration file, FileZilla FTP recent servers file, Ventrilo server configuration file, Terraform variable config file, Shell configuration file, Shell configuration file, Shell configuration file, Private SSH key, Private SSH key, Private SSH key, Private SSH key, SSH configuration file, Potential cryptographic private key, Shell command history file
MySQL client command history file, PostgreSQL client command history file, PostgreSQL password file, Ruby IRB console history file, Pidgin chat client account configuration file, Hexchat/XChat IRC client server list configuration file, Irssi IRC client configuration file, Recon-ng web reconnaissance framework API key database, DBeaver SQL database manager configuration file, Mutt e-mail client configuration file, S3cmd configuration file, AWS CLI credentials file, SFTP connection configuration file, T command-line Twitter client configuration file, Shell configuration file
Shell profile configuration file, Shell command alias configuration file, PHP configuration file, GNOME Keyring database file, KeePass password manager database file, SQL dump file, Apache htpasswd file, Configuration file for auto-login process, Rubygems credentials file, Tugboat DigitalOcean management tool configuration, DigitalOcean doctl command-line client configuration file, git-credential-store helper credentials file, GitHub Hub command-line client configuration file, Git configuration file
Contributing
- Fork it, baby!
- Create your feature branch:
git checkout -b my-new-feature
- Commit your changes:
git commit -am 'Add some feature'
- Push to the branch:
git push origin my-new-feature
- Submit a pull request.
Disclaimer
I take no responsibility for how you use this tool. Don't be a dick.
License
MIT. See LICENSE
More: https://github.com/eth0izzle/shhgit
The post shhgit - find secrets and sensitive files across GitHub (including Gists), GitLab and BitBucket appeared first on Hakin9 - IT Security Magazine.
reNgine does fingerprinting, port scanning, and banner grabbing which might be illegal in some countries. Please make sure you are authorized to perform reconnaissance on the targeted domain before using this tool.
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