Understand Your Target Before Touch any Tools

اللهم انصر اخواننا في غزة وفك عن اسراهم وعن جميع المسلمين

Introduction :

Hi, I'm baler3ion.

Before starting your hunting process or running massive recon, you should understand your target. Exploring the application using the steps below will help you do that effectively.

1. Use the Application Like a Normal User:

Don't think like a hacker yet. Create an account, understand the application, and spend 2–3 hours on it (more if needed). Let Burp Suite run in the background the entire time, then explore the sitemap and interact with the requests afterward.

2. Read The Documentation :

Most hunters skip this part — I don't know why. When I read a program's documentation, I understand my target much better. It helps me identify what the program expects from hunters, which bugs I should focus on, which ones I shouldn't, and how the application's logic works.

also i check if the target have YouTube channel, i learn from it how to use there product & services

3. Question can help you :

I will separate these into sections. By answering these questions, it will be easier for you to understand the target.

Data Flow

• How does the application pass data?
• What transport format is used? (JSON, XML, GraphQL)
• Is data passed via query params, request body, headers, or cookies?
• Are there WebSocket connections? What data flows through them?

User Interaction & Identification

• How does the app talk to users?
• Identifier type: email, username, UUID, numeric ID, phone number?
• Where is the identifier stored: cookie, JWT, session token, API key?
• Where does communication happen? (Cookies, API calls, URL params, request headers)
• Does the app over-return data in API responses? (extra fields the UI doesn't render)

Unique Threat Model

• Define what a real attacker would actually want from this app.

for example :

E-commerce: Stolen credit cards, account takeover, free orders

SaaS / B2B: Data exfiltration, tenant isolation bypass, privilege escalation

Healthcare: PII/PHI exposure, unauthorized record access

Banking: Fintech Fund transfer, balance manipulation, KYC bypass

Social Platform: Mass account takeover, content injection, doxxing

Admin Panel: RCE, full data access, lateral movement

• What would cause the most damage ?
• What is the business logic that, if abused, creates direct financial or reputational loss?

User Roles & Privilege Model

• Does the app have privilege levels? (admin, moderator, member, viewer, guest) Or is it a single customer-facing surface with no roles?
• Do lower-privileged roles have endpoints that partially overlap with admin endpoints?
• Is authorization checked at every layer? or just one?

Techs & Framework Defenses

• identify technologies that target using : use wappalyzer extension or BuiltWith website
• What framework/language powers the app? (Laravel, Django, Spring, Express..etc)
• How does the framework handle XSS, SQLi, CSRF by default?
• Are protections applied globally or only on specific routes?
• Is there a WAF? (Cloudflare, Akamai, AWS WAF) , then test whether it can be bypassed.
• Are error messages suppressed in production? Do they leak stack traces or versions?

Past Vulnerabilities

• Has there been a public CVE, bug bounty disclosure, or write up for this app? try to bypass the patch

in the injection bugs ask :

• Is the fix a block list / regex? Can it be bypassed with encoding, case variation, or null bytes?
• Was the root cause fixed, or just the specific payload?

Conclusion :

There are more questions worth asking especially around authentication & authorization, data storage, and business logic , but those naturally arise during the hunting process itself. The questions above are specifically what you should be asking before you start hunting or touch a single tool

Happy hunting 🐞

Follow me on twitter : https://x.com/_baler3ion