Source Byte

Zhang Yunhai - BYPASS CONTROL FLOW GUARD COMPREHENSIVELY - Blackhat #binary #exploitation ——— 🆔 @Infosec_Fortress

One of the samples checks if the file “C:\users\public\a.txt” exists and if it doesn’t, it creates the file which it later deletes. The purpose of this code is not entirely clear and may be unfinished code inserted by the authors or borrowed from other places without fully understanding what the code does.

https://research.checkpoint.com/2024/new-bugsleep-backdoor-deployed-in-recent-muddywater-campaigns/ 🤔

I created a simple Group Policy (GPO) to automatically fix CrowdStrike BSOD (Blue screen of death) issue. Credit : Arda Büyükkaya https://gist.github.com/whichbuffer/7830c73711589dcf9e7a5217797ca617

Global Windows outage hits computers around the world. This is linked to Crowdstrike update that cripples boot process.

Supposedly deleting “C-00000291*.sys” file in C:\Windows\System32\drivers\CrowdStrike directory fixes the issue. But editing system files you always do on your own risk :)

Credit: Lukasz Olejnik #CrowdStrike

🤔 Permanent solution

🖥 Introduction for to Windows kernel exploitation Explore the Windows Kernel with HEVD, a vulnerable driver. Dive into stack overflow exploits and bypass SMEP/KPTI protections using the sysret approach. A detailed guide for Windows kernel explotation: — Part 0: Where do I start? — Part 1: Will this driver ever crash? — Part 2: Is there a way to bypass kASLR, SMEP and KVA Shadow? — Part 3: Can we rop our way into triggering our shellcode? — Part 4: How do we write a shellcode to elevate privileges and gracefully return to userland? #windows #kernel #driver #hevd #hacksys

https://engineers.inpyjama.com/learn/ldd-101 Linux device driver development free course #Linux #Course #English

11 Strategies of a World-Class Cybersecurity Operations Center by mitre

Strategy 1: Know What You Are Protecting and Why Strategy 2: Give the SOC the Authority to Do Its Job Strategy 3: Build a SOC Structure to Match Your Organizational Needs Strategy 4: Hire AND Grow Quality Staff Strategy 5: Prioritize Incident Response Strategy 6: Illuminate Adversaries with Cyber Threat Intelligence Strategy 7: Select and Collect the Right Data Strategy 8: Leverage Tools to Support Analyst Workflow Strategy 9: Communicate Clearly, Collaborate Often, Share Generously Strategy 10: Measure Performance to Improve Performance Strategy 11: Turn up the Volume by Expanding SOC Functionality

درود. من یک مطلب کوتاهی نوشتم برای درک پروسه‌ای که توی کرنل رخ می‌ده موقع Null-dereference (معماری x86) و مقداری در مورد Virtual Memory Management کرنل صحبت کردم. شاید برای بچه‌هایی که روی آسیب‌پذیری‌های سمت کرنل کار می‌کنن هم جالب باشه: https://imanseyed.github.io/posts/the-flow-of-the-kernel-upon-receiving-a-sigsegv-for-null-dereferene/

Unauthenticated SSRF on Havoc C2 teamserver via spoofed demon agent Credit : Evan Ikeda https://blog.chebuya.com/posts/server-side-request-forgery-on-havoc-c2/