Телеграм канал «Bugitrix | Cybersecurity Daily»

https://medium.com/@bugitrix/how-one-student-earned-1-030-from-an-adobe-bug-a-bugitrix-case-study-fd25a99bbb90

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https://sukhveersingh97997.medium.com/common-ports-are-not-common-why-port-numbers-matter-more-than-you-think-5447f3d33078

Server-Side Request Forgery (SSRF) is one of the most dangerous web vulnerabilities today.
Why? Because it flips an application on its head—turning the target server into your own internal proxy.
Instead of attacking the server from the outside, SSRF tricks the application into making unauthorized HTTP requests to internal networks, cloud metadata services, or loopback interfaces that are completely hidden from the public internet.
If you want to spot SSRF during your web security audits, here is my 4-step testing methodology:
1. Identify Potential Target Parameters Look for any features where the server fetches remote resources or accepts external links/URLs: • Webhooks & API integrations • Import/Fetch functionality (?url=, ?path=, ?dest=, ?feed=) • PDF generators, image downloaders, or URL preview features • File uploads via remote URL
2. Out-of-Band (OAST) Verification • Never test SSRF blindly by pointing to localhost right away. • Replace the input parameter with a unique Out-of-Band domain (using Burp Collaborator, interactsh, or your own listener). • Trigger the request and check if the target server initiates a DNS lookup or HTTP request back to your server.
3. Bypass Common SSRF Filters & Protections If 127.0.0.1 or localhost is blocked by WAFs/filters, test these bypass techniques: • Alternative IP Formats: Hex (0x7f000001), Decimal (2130706433), or Octal (0177.0.0.1) • DNS Rebinding / Custom Domains: Use services like 127.0.0.1.nip.io or set up custom A records resolving to internal IPs • Enclosed Alphanumerics & Unicode: http://ⓚⓐⓛⓘ.ⓞⓡⓖ • Redirect Chaining: Point the parameter to an external URL that issues a 302 Redirect to [http://162.254.169.254](http://162.254.169.254)
4. Demonstrate Real Security Impact Finding a pingback is just a P4. To elevate it to a P1/P2 critical finding: • Query Cloud Instance Metadata (AWS IMDSv1: [http://169.254.169.254/latest/meta-data/](http://169.254.169.254/latest/meta-data/)) to read IAM credentials. • Scan internal administrative ports (127.0.0.1:8080, 127.0.0.1:6379 for Redis, 127.0.0.1:9200 for Elasticsearch). • Access internal microservices hidden behind the reverse proxy.
💡 Pro-Tip for Beginners: Always check PDF generation features! Passing a payload like <iframe src="[http://169.254.169.254/latest/meta-data/](http://169.254.169.254/latest/meta-data/)"></iframe> into an HTML-to-PDF renderer often dumps full cloud credentials directly into the generated PDF file.

🚨 BUG BOUNTY REALITY CHECK 🚨


You don't need to be a genius to make your first $1,000 in bug bounty.


You need 3 things:


1️⃣ One skill — Pick ONE: IDOR, XSS, or Access Control bugs. Master it.
2️⃣ One target — Stop jumping between 50 programs. Go deep on ONE.
3️⃣ One habit — 1 hour of recon daily. Every. Single. Day.

Most hunters fail because they chase every new technique they see.


The ones who win? They go DEEP, not WIDE. 🎯


💡 Golden rule: A simple IDOR found on a forgotten endpoint pays more than a fancy exploit you never finish.


🔥 Your move:


❤️ = I'm starting my bug bounty journey today
👍 = I already hunt but need to go deeper
🤯 = This hit different

👇 Drop your favorite bug class in the comments — let's help a beginner pick their first one!


🔔 Follow @bugitrix for daily bug bounty tips, writeups & resources — no fluff, just value.

https://sukhveersingh97997.medium.com/i-read-this-book-and-found-my-first-valid-bug-in-less-than-a-week-heres-the-book-3c031eb66520