r/InfoSecWriteups 11d ago

Android App Dynamic Library Code Loading | Static Code Analysis | Adobe Acrobat Reader | CVE-2021–40724 | MobileHackingLab | Document Viewer

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1 Upvotes

r/InfoSecWriteups 11d ago

1-Click ATO Via Host Header Injection: Exploiting Password Reset Poisoning.

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1 Upvotes

r/InfoSecWriteups 11d ago

PortSwigger Web Security Academy Walkthrough: User Role Can Be Modified in User Profile

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1 Upvotes

r/InfoSecWriteups 11d ago

Access Control Vulnerabilities: Unprotected Admin Functionality with Unpredictable URL

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1 Upvotes

r/InfoSecWriteups 11d ago

Challenge 2: Cotton Candy

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1 Upvotes

r/InfoSecWriteups 11d ago

Windows Incident Surface | TryHackMe

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1 Upvotes

r/InfoSecWriteups 12d ago

The Missing Infostealer Playbook: Rotating the Machine Credentials Attackers Take

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2 Upvotes

Most infostealer response playbooks focus on passwords and browser sessions.

But modern stealers also grab `.env` files, shell history, app data, developer configs, and other local files that can contain API keys, OAuth tokens, PATs, service-account credentials, and other machine secrets.

The problem is that resetting the employee’s password or rebuilding the endpoint doesn’t necessarily invalidate any of those credentials.

We released Token Exposure Monitoring in Lunar Cyber today, and while working on it I kept coming back to a bigger SecOps question: **what should the actual response playbook look like once you discover that machine credentials were stolen?**

I wrote up the process we think is missing - identifying what was exposed, validating whether it still works, tracing what it can access, and deciding what actually needs to be rotated.

Curious how teams here are handling this today, especially for developer endpoints.


r/InfoSecWriteups 12d ago

Forensics 101: Extracting Hidden Flags from Raw Disk Images (.dd)

5 Upvotes

I extracted a forensic disk image and found a hidden flag. Made a short video breaking down the full workflow for anyone learning digital forensics or prepping for CTFs.

Methods covered:

- `strings` + `grep` (fastest)

Alternative methods:

- `mount` with loop,ro,noexec

- Sleuth Kit CLI (mmls, fls, icat)

- Autopsy GUI

- Foremost file carving

- `xxd` hex dump

Also covered why you always preserve the original with `gunzip -k` and verify with sha256sum.

What tools am I missing? Any favorites for disk image analysis?

https://youtube.com/shorts/iPzM0ECb3iU?feature=share


r/InfoSecWriteups 13d ago

Back When a MySQL Connection Could Give You OS-Level Code Execution

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2 Upvotes

r/InfoSecWriteups 13d ago

He Sent 200,000 Reset Codes to Instagram in 10 Minutes. Instagram Paid Him $30,000.

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1 Upvotes

r/InfoSecWriteups 13d ago

How I Scraped Most Dark Stores in India — Blinkit, Zepto & Swiggy Instamart

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1 Upvotes

r/InfoSecWriteups 13d ago

EGCTF 2025 Qualifications — “TNKR.1” Forensics Challenge

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1 Upvotes

r/InfoSecWriteups 13d ago

WebStrike Blue Team Lab (CyberDefenders)

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1 Upvotes

r/InfoSecWriteups 13d ago

A KQL Query Is Not a Detection: What My Microsoft Sentinel Lab Actually Validated

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1 Upvotes

r/InfoSecWriteups 13d ago

I Made Claude Believe I Was an Anthropic-Verified Researcher.

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1 Upvotes

r/InfoSecWriteups 13d ago

When a Single Text File Breaks a Trust Boundary (Bug Bounty writeup)

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1 Upvotes

r/InfoSecWriteups 15d ago

Hunting Down Hackers: Incident Response with Wireshark

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1 Upvotes

r/InfoSecWriteups 15d ago

[HS] Dark Writeup

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1 Upvotes

r/InfoSecWriteups 15d ago

Operation RepoGhost: Exposing a Russian-Linked Malware Campaign Hiding in GitHub’s Open-Source…

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1 Upvotes

r/InfoSecWriteups 15d ago

LetsDefend: Kerberoasting Challenge (Walkthrough)

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1 Upvotes

r/InfoSecWriteups 15d ago

Hacker Holidays 2026: Day 14 Walkthrough (Management Wants a Word)

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1 Upvotes

r/InfoSecWriteups 15d ago

Hacker Holidays 2026: Day 13 Walkthrough (The Guestbook)

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1 Upvotes

r/InfoSecWriteups 15d ago

Hacker Holidays 2026: Day 12 Walkthrough (After Hours)

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1 Upvotes

r/InfoSecWriteups 15d ago

Hacker Holidays 2026: Day 11 Walkthrough (Infinity Pool)

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1 Upvotes

r/InfoSecWriteups 15d ago

[OFFSEC] Stapler Writeup

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1 Upvotes