Hey Hunter's,
DarkShadow is here back again!

🔥SQL injection in json endpoint💀

Always be check json, js endpoints for SQLi. Make sure you check blind base injections. Cause here only possible blind base injections.

#sqli #bugbountytips

To the Brut Security Community: Saraswati Puja is a celebration of learning, and in our field, learning never stops. May your curiosity be endless, your logic be sharp, and your thirst for knowledge lead you to mastery.

Wishing you a powerful and blessed Saraswati Puja. Let’s keep building, keep breaking, and keep learning.

♾Bug Bounty Tip: Bypassing WAFs for Stored XSS via ASCII-Hex Encoded PDF Payloads

➡️Many platforms allow users to upload PDFs that get previewed/rendered directly in the browser (often using libraries like PDF.js in Firefox, Chrome extensions, embedded viewers, or custom implementations).

A clever trick for Stored XSS (or Blind XSS variants):

1. Craft a classic XSS payload (e.g., one that executes alert(document.domain) or exfiltrates cookies/tokens).

2. Encode the entire malicious JavaScript as ASCII hex (each character → \xHH format).

3. Embed it inside a tiny/valid PDF structure that triggers execution during font/glyph rendering or object parsing in vulnerable PDF renderers.

4. Upload the PDF to a target feature that stores and previews user-uploaded documents (profile, reports, tickets, resumes, invoices, shared files, etc.).

5. When a victim (admin, user, or support) previews/opens the PDF in a vulnerable renderer → XSS fires in the context of the PDF viewer.

⚡️Key advantages:
- Many WAFs / upload filters / content scanners completely miss it because it's not a classic <script> or HTML — it's binary-ish PDF content with hex-encoded JS.

- Can be tuned for Stored → persistent until deleted.

- Can be adapted for Blind XSS → exfiltrate to your server instead of alert().

💬Real-world notes from hunters:
- Works especially well against PDF.js-based previews (Firefox default, many web apps embed it).

- Reference: Similar to behavior seen in CVE-2024-4367 (arbitrary JS exec in PDF.js via font handling path).

- Impact varies:

- Self-XSS / low-priv user alert → usually P4–P5 or Informational.

- Admin views it → potential session theft / higher severity (P2–P3 possible if you can prove escalation).

- Some programs reject pure alert() PoCs in sandboxed viewers (no cookie access in most cases) → demonstrate real impact (e.g., redirect, keylogger, token exfil) or target-specific quirks.

- Pro tip: Test on your primary programs that have PDF preview/generation features — many still do!

⚡️Resources to start:
- Repo with example payloads: https://github.com/orwagodfather/XSS-Payloads
- Edit payloads easily in Notepad++ (hex view or find/replace).

Happy hunting — stay ethical & report responsibly! 🏆

Photo Credit- Orwa

#bugbountytip #bugbounty #xss #websecurity #pdfxss

Tips for Testing Account Takeover Vulnerabilities.

Guys, this is DarkShadow.
This is absolutely crazy—you won’t believe this!

A researcher recently discovered a vulnerability where anyone can view posts from a private Instagram account. The most shocking part? It’s super simple.
When you visit a private Instagram profile, the account still appears private to normal users. However, if you inspect the response/source code, all the posts are actually visible there😳

I highly recommend everyone check out the YouTube POC video explaining this issue in detail:
https://youtu.be/VTVdrvAJ28E?si=7Eu1h1iHioGyYOlC

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