├── CHANGELOG.md ├── LICENSE ├── README.md ├── gitbleed.sh ├── gitbleed_gh.sh ├── gitbleed_gl.sh └── gitbleed_icon.png /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | All notable changes to this project will be documented in this file. 3 | 4 | ## 2022-XX-XX 5 | - Initial release 6 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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For more information about the underlying quirk in Git behavior, please visit [read our blog post](https://wwws.nightwatchcybersecurity.com/2022/02/11/gitbleed/). 6 | 7 | ## What Do These Scripts Do? 8 | These scripts will clone a copy of the given Git repository, both as regular clone and mirrored ("--mirror") option. It will then create a delta between the two, seeking to find the parts of the repository that are only available in mirror mode. Last, gitleaks will be run to see if any secrets are present in the delta portion, and "git log" will be used to create a single file containing the bodies of the commits so they can be analyzed easier. 9 | 10 | Please note that since this script creates three copies of the repository, it may consume a lot of disk space. 11 | 12 | ## Example repositories 13 | You can test these tools on the following two example repositories: 14 | * [gb_testrepo_delete](https://github.com/nightwatchcybersecurity/gb_testrepo_delete) - repository hiding secrets via deleted commits 15 | * [gb_testrepo_reset](https://github.com/nightwatchcybersecurity/gb_testrepo_reset) - repository hiding secrets via "git reset" 16 | 17 | ## Requirements 18 | You will need [Git](https://git-scm.com/), [Python 3](https://www.python.org/). [GitLeaks](https://github.com/zricethezav/gitleaks) and [git-filter-repo](https://github.com/newren/git-filter-repo) to be installed. Here is an example of installing these on MacOS: 19 | ``` 20 | brew install git python3 gitleaks git-filter-repo 21 | ``` 22 | 23 | ## How to Install and Run 24 | You can run this againt a repository as follows: 25 | ``` 26 | git clone https://github.com/nightwatchcybersecurity/gitbleed_tools.git 27 | cd gitbleed_tools 28 | ./gitbleed.sh https://github.com/nightwatchcybersecurity/gitbleed_tools.git example 29 | ``` 30 | 31 | There are also some helper scripts that can be used to scan GitHub and GitLab repositories as follows: 32 | ``` 33 | ./gitbleed_gh.sh nightwatchcybersecurity/gitbleed_tools 34 | ./gitbleed_gl.sh nwcs/junit_ui_bug 35 | ``` 36 | 37 | This will create an example folder containing three subfolders: 38 | * clone - contains the cloned repository 39 | * delta - contains the mirrrored repository minus all of the commits in the "clone" 40 | * mirror - contains the mirrored repository cloned with the "--mirror" option 41 | 42 | There are also three files created: 43 | * clone_hashes.done.txt - list of hashes in the cloned repository 44 | * gitleaks.json - results from running gitleaks 45 | * gitlog.txt - all commits from the delta folder concatenated into a single file 46 | 47 | # Development Information 48 | 49 | ## Reporting bugs and feature requests 50 | Please use the GitHub issue tracker to report issues or suggest features: 51 | https://github.com/nightwatchcybersecurity/gitbleed_tools 52 | 53 | You can also send emai to ***research /at/ nightwatchcybersecurity [dot] com*** 54 | 55 | ## Wishlist 56 | - TBD 57 | -------------------------------------------------------------------------------- /gitbleed.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # 3 | # This shell script will download both the regular and mirrored clones 4 | # of the given Git repository, create the delta between the two 5 | # and scan it for secrets using gitleaks. 6 | # 7 | # Usage: 8 | # ./gitbleed.sh [git url] [directory] 9 | # 10 | # For example: 11 | # ./gitbleed.sh https://github.com/nightwatchcybersecurity/gitbleed_tools.git 12 | # 13 | 14 | echo Processing $1 into directory $2 15 | mkdir -p $2 16 | cd $2 17 | 18 | echo 19 | echo Cloning repo... 20 | if [[ -d clone/ ]]; then 21 | echo "--- Already cloned, skipping" 22 | else 23 | git clone $1 clone/ 24 | fi 25 | 26 | echo 27 | echo Cloning mirror 28 | if [[ -d "mirror/" ]]; then 29 | echo "--- Already mirrored, skipping" 30 | else 31 | git clone --mirror $1 mirror/ 32 | fi 33 | 34 | echo 35 | echo Copying mirror before trimming 36 | if [[ -d delta/ ]]; then 37 | echo "--- Already trimmed, skipping" 38 | else 39 | cp -R mirror/ delta/ 40 | fi 41 | 42 | echo 43 | echo Extracting list of commits from clone 44 | if [[ -f "clone_hashes.txt" ]] || [[ -f "clone_hashes.done.txt" ]]; then 45 | echo "-- Already extracted, skipping" 46 | else 47 | cd clone 48 | git rev-list --objects --all --no-object-names >../clone_hashes.txt 49 | cd .. 50 | fi 51 | 52 | echo 53 | echo Deleting clone commits from mirror 54 | if [[ -f "clone_hashes.done.txt" ]]; then 55 | echo "-- Already deleted, skipping" 56 | else 57 | cd delta 58 | git filter-repo --strip-blobs-with-ids ../clone_hashes.txt 59 | mv ../clone_hashes.txt ../clone_hashes.done.txt 60 | cd .. 61 | fi 62 | 63 | echo 64 | echo Run GitLeaks to check for secrets 65 | if [[ -f "gitleaks.json" ]]; then 66 | echo "-- Already checked, skipping" 67 | else 68 | cd delta 69 | gitleaks detect -v -r ../gitleaks.json 70 | cd .. 71 | fi 72 | 73 | echo 74 | echo Run git log to extract all commits 75 | if [[ -f "gitlog.txt" ]]; then 76 | echo "-- Already ran, skipping" 77 | else 78 | cd delta 79 | git log --graph --all -p >../gitlog.txt 80 | cd .. 81 | fi 82 | 83 | echo 84 | echo Done! 85 | -------------------------------------------------------------------------------- /gitbleed_gh.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # 3 | # Processes Github repos 4 | # 5 | # Usage: 6 | # ./gitbleed_gh.sh [org/repo] 7 | # 8 | # Example: 9 | # ./gitbleed_gh.sh nightwatchcybersecurity/gitbleed_tools 10 | # 11 | 12 | ./gitbleed.sh https://github.com/$1.git $1 -------------------------------------------------------------------------------- /gitbleed_gl.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # 3 | # Processes Gitlab repos 4 | # 5 | # Usage: 6 | # ./gitbleed_gl.sh [org/repo] 7 | # 8 | # Example: 9 | # ./gitbleed_gl.sh nwcs/junit_ui_bug 10 | # 11 | 12 | ./gitbleed.sh https://gitlab.com/$1.git $1 -------------------------------------------------------------------------------- /gitbleed_icon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nightwatchcybersecurity/gitbleed_tools/1225c7e91e5f7e2c5cc4e0cf5df476c36396b025/gitbleed_icon.png --------------------------------------------------------------------------------