Published on January 11th, 2018 | Post Views: 1,940 Hits0
truffleHog – Searches Through Git Repositories For High Entropy Strings And Secrets, Digging Deep Into Commit History
Searches through git repositories for secrets, digging deep into commit history and branches. This is effective at finding secrets accidentally committed.
Trufflehog previously functioned by running entropy checks on git diffs. This functionality still exists, but high signal regex checks have been added, and the ability to surpress entropy checking has also been added.
These features help cut down on noise, and makes the tool easier to shove into a devops pipeline.
truffleHog --regex --entropy=False https://github.com/dxa4481/truffleHog.git
pip install truffleHog
Custom regexes can be added to the following file:
Things like subdomain enumeration, s3 bucket detection, and other useful regexes highly custom to the situation can be added.
Feel free to also contribute high signal regexes upstream that you think will benifit the community. Things like Azure keys, Twilio keys, Google Compute keys, are welcome, provided a high signal regex can be constructed.
How it works
This module will go through the entire commit history of each branch, and check each diff from each commit, and check for secrets. This is both by regex and by entropy. For entropy checks, trufflehog will evaluate the shannon entropy for both the base64 char set and hexidecimal char set for every blob of text greater than 20 characters comprised of those character sets in each diff. If at any point a high entropy string >20 characters is detected, it will print to the screen.
Find secrets hidden in the depths of git. positional arguments: git_url URL for secret searching optional arguments: -h, --help show this help message and exit --json Output in JSON --regex Enable high signal regex checks --entropy DO_ENTROPY Enable entropy checks --since_commit SINCE_COMMIT Only scan from a given commit hash --max_depth MAX_DEPTH The max commit depth to go back when searching for secrets