mirror of
https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
synced 2026-06-11 13:44:56 +03:00
mukul975
27c6414ca5
Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
66 lines
1.8 KiB
Markdown
66 lines
1.8 KiB
Markdown
# API Reference: Detecting Email Forwarding Rules Attack
|
|
|
|
## Microsoft Graph API - Inbox Rules
|
|
|
|
```http
|
|
GET https://graph.microsoft.com/v1.0/users/{user-id}/mailFolders/inbox/messageRules
|
|
Authorization: Bearer {token}
|
|
|
|
# Response
|
|
{
|
|
"value": [
|
|
{
|
|
"displayName": "Forward invoices",
|
|
"isEnabled": true,
|
|
"conditions": {"subjectContains": ["invoice", "payment"]},
|
|
"actions": {
|
|
"forwardTo": [{"emailAddress": {"address": "attacker@evil.com"}}],
|
|
"delete": true,
|
|
"markAsRead": true
|
|
}
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
## Exchange Online PowerShell
|
|
|
|
```powershell
|
|
# List all inbox rules for a user
|
|
Get-InboxRule -Mailbox user@company.com | FL Name, ForwardTo, RedirectTo, DeleteMessage
|
|
|
|
# Find forwarding rules across all mailboxes
|
|
Get-Mailbox -ResultSize Unlimited | ForEach-Object {
|
|
Get-InboxRule -Mailbox $_.UserPrincipalName |
|
|
Where-Object { $_.ForwardTo -or $_.RedirectTo }
|
|
}
|
|
|
|
# Search unified audit log for rule creation
|
|
Search-UnifiedAuditLog -Operations "New-InboxRule","Set-InboxRule" -StartDate (Get-Date).AddDays(-30)
|
|
```
|
|
|
|
## Suspicious Rule Indicators
|
|
|
|
| Indicator | Severity | Description |
|
|
|-----------|----------|-------------|
|
|
| External forwarding | HIGH | Forwards to non-org domain |
|
|
| Forward + delete | CRITICAL | Forwards then deletes original |
|
|
| Financial keywords | HIGH | Targets invoice/payment subjects |
|
|
| Forward + mark read | HIGH | Hides forwarded messages |
|
|
| Move to RSS/Junk | MEDIUM | Hides messages in unused folders |
|
|
|
|
## Splunk SPL Detection
|
|
|
|
```spl
|
|
index=o365 Operation IN ("New-InboxRule", "Set-InboxRule")
|
|
| spath output=forward path=Parameters{}.Value
|
|
| where isnotnull(forward) AND NOT match(forward, "@company\\.com")
|
|
```
|
|
|
|
## CLI Usage
|
|
|
|
```bash
|
|
python agent.py --token "eyJ..." --user-id user@company.com --org-domain company.com
|
|
python agent.py --audit-log exchange_audit.log
|
|
```
|