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macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Basierend auf der SOC-Berufsklassifikation
SKILL.md wird angezeigt
| name | wstg-apit-00 |
| description | API Testing Overview |
| category | api-testing |
| owasp_id | WSTG-APIT-00 |
| version | 1.0.0 |
| author | cyberstrike-official |
| tags | ["api","rest","graphql","soap","wstg","apit"] |
| tech_stack | [] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
WSTG-APIT-00
API Testing Overview
APIs (Application Programming Interfaces) are the backbone of modern applications, enabling communication between different services, mobile apps, and frontend interfaces. API security testing focuses on identifying vulnerabilities specific to API implementations including authentication, authorization, input validation, and business logic flaws.
#!/bin/bash
TARGET=
endpoints=(
)
endpoint ;
status=$(curl -s -o /dev/null -w )
curl -s | jq 2>/dev/null
curl -s | jq 2>/dev/null
# Use API documentation or fuzzing
# Extract endpoints from:
# - Swagger/OpenAPI specs
# - Mobile app analysis
# - JavaScript source code
# - Proxy traffic
# Fuzz API endpoints
ffuf -u "https://target.com/api/FUZZ" -w api-wordlist.txt -mc 200,201,401,403
#!/bin/bash
API="https://target.com/api"
# Test without authentication
curl -s "$API/users" -H "Content-Type: application/json"
# Test with invalid token
curl -s "$API/users" -H "Authorization: Bearer invalid_token"
# Test with expired token
curl -s "$API/users" -H "Authorization: Bearer expired_token"
# Test API key in different locations
curl -s "$API/users?api_key=test"
curl -s "$API/users" -H "X-API-Key: test"
curl -s "$API/users" -H "Authorization: ApiKey test"
#!/usr/bin/env python3
import requests
import json
class APISecurityChecker:
def __init__(self, base_url, auth_header=None):
self.base_url = base_url
self.session = requests.Session()
if auth_header:
self.session.headers.update(auth_header)
self.findings = []
def check_authentication(self, endpoints):
"""Check authentication requirements"""
print("[*] Checking authentication...")
no_auth = requests.Session()
for endpoint in endpoints:
url = f"{self.base_url}{endpoint}"
# Test without auth
response = no_auth.get(url)
if response.status_code == 200:
print(f"[VULN] No auth required: {endpoint}")
self.findings.append({
"issue": f"Missing authentication on {endpoint}",
"severity": "High"
})
def check_rate_limiting(self, endpoint, requests_count=100):
"""Check for rate limiting"""
print(f"\n[*] Checking rate limiting on {endpoint}...")
for i in range(requests_count):
response = self.session.get(f"{self.base_url}{endpoint}")
if response.status_code == 429:
print(f"[OK] Rate limited after {i+1} requests")
return
print(f"[WARN] No rate limiting after {requests_count} requests")
self.findings.append({
"issue": f"No rate limiting on {endpoint}",
"severity": "Medium"
})
def check_http_methods(self, endpoint):
"""Check allowed HTTP methods"""
print(f"\n[*] Checking HTTP methods on {endpoint}...")
methods = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS', 'HEAD']
url = f"{self.base_url}{endpoint}"
for method in methods:
response = self.session.request(method, url)
if response.status_code not in [404, 405]:
print(f" {method}: {response.status_code}")
def check_cors(self, endpoint):
"""Check CORS configuration"""
print(f"\n[*] Checking CORS on {endpoint}...")
headers = {"Origin": "https://evil.com"}
response = self.session.options(
f"{self.base_url}{endpoint}",
headers=headers
)
acao = response.headers.get('Access-Control-Allow-Origin', '')
if acao == '*' or acao == 'https://evil.com':
print(f"[VULN] Permissive CORS: {acao}")
self.findings.append({
"issue": "Permissive CORS configuration",
"severity": "Medium"
})
def generate_report(self):
"""Generate API security report"""
print("\n" + "="*50)
print("API SECURITY REPORT")
print("="*50)
if not self.findings:
print("\nNo issues found.")
return
print(f"\nFindings: {len(self.findings)}")
for f in self.findings:
print(f"\n [{f['severity']}] {f['issue']}")
# Usage
checker = APISecurityChecker(
"https://target.com/api",
{"Authorization": "Bearer token"}
)
checker.check_authentication(["/users", "/orders", "/admin"])
checker.check_rate_limiting("/users")
checker.check_http_methods("/users")
checker.check_cors("/users")
checker.generate_report()
| Tool | Description |
|---|---|
| Postman | API testing and documentation |
| Burp Suite | API traffic interception |
| OWASP ZAP | Automated API scanning |
| Insomnia | API client |
| GraphQL Voyager | GraphQL visualization |
| ID | Vulnerability |
|---|---|
| API1 | Broken Object Level Authorization (BOLA) |
| API2 | Broken Authentication |
| API3 | Broken Object Property Level Authorization |
| API4 | Unrestricted Resource Consumption |
| API5 | Broken Function Level Authorization (BFLA) |
| API6 | Unrestricted Access to Sensitive Business Flows |
| API7 | Server Side Request Forgery (SSRF) |
| API8 | Security Misconfiguration |
| API9 | Improper Inventory Management |
| API10 | Unsafe Consumption of APIs |
[ ] API endpoints discovered
[ ] Authentication tested
[ ] Authorization tested
[ ] Input validation tested
[ ] Rate limiting checked
[ ] CORS configuration reviewed
[ ] Error handling analyzed
[ ] Findings documented