KASYS
BCP & DRP Template .pdf
پیشنهاد برای آموزش دوره های ISMS و BCP
از جمله روشهای آنتی فارنزیک
پراکسی کردن سیستم کال
**البته هنوز ردپاهایی باقی میماند
#آکادمی_روزبه
https://medium.com/@nisaprmst/syscall-proxy-a-way-to-minimize-footprint-e7305efbfc5b
پراکسی کردن سیستم کال
**البته هنوز ردپاهایی باقی میماند
#آکادمی_روزبه
https://medium.com/@nisaprmst/syscall-proxy-a-way-to-minimize-footprint-e7305efbfc5b
Medium
Syscall Proxy: A Way To Minimize “Footprint”
This article will discuss one of the most advanced techniques of anti-forensics. Anti-forensics is tools or techniques that frustrate…
آنتی فارنزیک در حافظه
از جناب علیرضا تقی خانی
#آکادمی_روزبه
https://medium.com/@alirezataghikhani1998/memory-analysis-against-anti-forensics-methods-22dd2c37f2a
از جناب علیرضا تقی خانی
#آکادمی_روزبه
https://medium.com/@alirezataghikhani1998/memory-analysis-against-anti-forensics-methods-22dd2c37f2a
Medium
Memory Analysis Against Anti-Forensics Methods
“Exploring RAM acquisition techniques and focus on how malware uses anti-forensics techniques to evade memory acquisition”
سرتیفیکیت بیش از ۸۳ هزار دامین چرا باطل میشود؟
#آکادمی_روزبه
https://thehackernews.com/2024/07/digicert-to-revoke-83000-ssl.html
#آکادمی_روزبه
https://thehackernews.com/2024/07/digicert-to-revoke-83000-ssl.html
از chatGPT بهینه استفاده کنیم
مثال : سوال
As a forensic expert , Explain system call
جواب :
A system call is an essential mechanism that allows user-level processes to request services from the operating system's kernel. These services can include tasks like accessing hardware, managing files, allocating memory, or creating and managing processes. Here’s a detailed breakdown of system calls from a forensic expert's perspective:
### Basic Concept
1. Definition: A system call is a controlled entry point that allows a program to request a service from the operating system's kernel.
2. Purpose: It provides an interface between user-space applications and the kernel, enabling them to perform operations that require higher privileges.
### Categories of System Calls
System calls can be broadly categorized based on their functionality:
1. Process Control: Creating and managing processes (e.g.,
2. File Management: Handling files and directories (e.g.,
3. Device Management: Interacting with hardware devices (e.g.,
4. Information Maintenance: Gathering and setting system information (e.g.,
5. Communication: Facilitating inter-process communication (e.g.,
### System Call Lifecycle
1. Invocation: A system call is typically invoked by a user-level process through a library function (e.g., the C standard library).
2. Transition to Kernel Mode: The CPU switches from user mode to kernel mode to execute the system call. This transition is often triggered by a software interrupt or trap.
3. Kernel Execution: The kernel executes the requested service using its internal resources and privileged instructions.
4. Return to User Mode: The results of the system call are returned to the user process, and the CPU switches back to user mode.
### Forensic Relevance
From a forensic perspective, understanding system calls is crucial for several reasons:
1. Activity Monitoring: System calls provide insights into what a process is doing. By monitoring system calls, forensic experts can track file access, process creation, and other critical activities.
2. Malware Analysis: Malicious software often relies on system calls to perform its actions. By analyzing the sequence of system calls, experts can understand the behavior of malware.
3. Incident Response: During an incident, system call logs can help reconstruct the events leading up to the security breach.
4. Digital Evidence: System call traces can serve as digital evidence in investigations, revealing unauthorized access or data manipulation.
### Tools and Techniques
1. Strace: A widely used tool in Unix-like systems to trace system calls made by a process.
2. Auditd: The Linux Auditing System, which can log system calls for security monitoring and compliance purposes.
3. Sysmon: A Windows system service that logs system calls and other system events for detailed monitoring.
### Example
Here’s a simple example of how a system call works:
In this C program:
- The
- The
By understanding and analyzing such system calls, forensic experts can gain insights into the actions performed by processes on a system.
#آکادمی_روزبه
مثال : سوال
As a forensic expert , Explain system call
جواب :
A system call is an essential mechanism that allows user-level processes to request services from the operating system's kernel. These services can include tasks like accessing hardware, managing files, allocating memory, or creating and managing processes. Here’s a detailed breakdown of system calls from a forensic expert's perspective:
### Basic Concept
1. Definition: A system call is a controlled entry point that allows a program to request a service from the operating system's kernel.
2. Purpose: It provides an interface between user-space applications and the kernel, enabling them to perform operations that require higher privileges.
### Categories of System Calls
System calls can be broadly categorized based on their functionality:
1. Process Control: Creating and managing processes (e.g.,
fork(), exec(), wait(), exit()).2. File Management: Handling files and directories (e.g.,
open(), read(), write(), close(), unlink()).3. Device Management: Interacting with hardware devices (e.g.,
ioctl(), read(), write()).4. Information Maintenance: Gathering and setting system information (e.g.,
getpid(), alarm(), sleep()).5. Communication: Facilitating inter-process communication (e.g.,
pipe(), shmget(), msgsnd(), recv()).### System Call Lifecycle
1. Invocation: A system call is typically invoked by a user-level process through a library function (e.g., the C standard library).
2. Transition to Kernel Mode: The CPU switches from user mode to kernel mode to execute the system call. This transition is often triggered by a software interrupt or trap.
3. Kernel Execution: The kernel executes the requested service using its internal resources and privileged instructions.
4. Return to User Mode: The results of the system call are returned to the user process, and the CPU switches back to user mode.
### Forensic Relevance
From a forensic perspective, understanding system calls is crucial for several reasons:
1. Activity Monitoring: System calls provide insights into what a process is doing. By monitoring system calls, forensic experts can track file access, process creation, and other critical activities.
2. Malware Analysis: Malicious software often relies on system calls to perform its actions. By analyzing the sequence of system calls, experts can understand the behavior of malware.
3. Incident Response: During an incident, system call logs can help reconstruct the events leading up to the security breach.
4. Digital Evidence: System call traces can serve as digital evidence in investigations, revealing unauthorized access or data manipulation.
### Tools and Techniques
1. Strace: A widely used tool in Unix-like systems to trace system calls made by a process.
2. Auditd: The Linux Auditing System, which can log system calls for security monitoring and compliance purposes.
3. Sysmon: A Windows system service that logs system calls and other system events for detailed monitoring.
### Example
Here’s a simple example of how a system call works:
#include <unistd.h>
#include <stdio.h>
int main() {
char buffer[128];
int bytesRead;
// System call: read from standard input (file descriptor 0)
bytesRead = read(0, buffer, 128);
// System call: write to standard output (file descriptor 1)
write(1, buffer, bytesRead);
return 0;
}
In this C program:
- The
read() system call reads data from the standard input.- The
write() system call writes data to the standard output.By understanding and analyzing such system calls, forensic experts can gain insights into the actions performed by processes on a system.
#آکادمی_روزبه
گزارش خوب و فنی بخوانیم
تحلیل رفتاری گروه UNC4393
#آکادمی_روزبه
https://cloud.google.com/blog/topics/threat-intelligence/unc4393-goes-gently-into-silentnight?linkId=10528541
تحلیل رفتاری گروه UNC4393
#آکادمی_روزبه
https://cloud.google.com/blog/topics/threat-intelligence/unc4393-goes-gently-into-silentnight?linkId=10528541
Google Cloud Blog
UNC4393 Goes Gently into the SILENTNIGHT | Google Cloud Blog
We detail the evolution of UNC4393's operational tactics and malware usage throughout its active lifespan.
پیرو مقالات هانت
تغییر نام پراسس ها در لینوکس برای غیر مشکوک سازی
#آکادمی_روزبه
https://doubleagent.net/process-name-stomping/
تغییر نام پراسس ها در لینوکس برای غیر مشکوک سازی
#آکادمی_روزبه
https://doubleagent.net/process-name-stomping/
haxrob
Hiding in plain sight: Modifying process names in UNIX-like systems (part 1)
Exploring ways malware on Linux and other UNIX-like systems can disguise their process names.
برای رسیدن به محرمانگی هنگام استفاده از LLM ها
میتوانید از لینک زیر برای خود لوکال LLM بالا بیاورید
حوزه استفاده : مهندسی معکوس
Core Features
Offline Operation: Runs LLMs entirely on local CPU/GPU, ensuring data privacy and security.
Automatic Function Naming: Automatically suggests semantically meaningful function names from decompiler output.
Binary Ninja Integration: Seamlessly integrates as a plugin with Binary Ninja.
Modular Architecture: Designed for easy extension to support other reverse engineering tools like IDA and Ghidra.
Consumer Hardware Compatibility: Optimized to run on consumer-grade hardware, such as Apple silicon architectures.
Enhanced AI with Static Analysis: Improves AI-based analysis and suggestions by incorporating insights from static analysis, providing a richer context and more accurate results.
https://github.com/mrphrazer/reverser_ai
میتوانید از لینک زیر برای خود لوکال LLM بالا بیاورید
حوزه استفاده : مهندسی معکوس
Core Features
Offline Operation: Runs LLMs entirely on local CPU/GPU, ensuring data privacy and security.
Automatic Function Naming: Automatically suggests semantically meaningful function names from decompiler output.
Binary Ninja Integration: Seamlessly integrates as a plugin with Binary Ninja.
Modular Architecture: Designed for easy extension to support other reverse engineering tools like IDA and Ghidra.
Consumer Hardware Compatibility: Optimized to run on consumer-grade hardware, such as Apple silicon architectures.
Enhanced AI with Static Analysis: Improves AI-based analysis and suggestions by incorporating insights from static analysis, providing a richer context and more accurate results.
https://github.com/mrphrazer/reverser_ai
GitHub
GitHub - mrphrazer/reverser_ai: Provides automated reverse engineering assistance through the use of local large language models…
Provides automated reverse engineering assistance through the use of local large language models (LLMs) on consumer hardware. - mrphrazer/reverser_ai
تهدیدات ریز پرنده ها
#آکادمی_روزبه
https://www.asisonline.org/security-management-magazine/articles/2023/05/uncrewed-aerial-systems/security-implications-drones/
#آکادمی_روزبه
https://www.asisonline.org/security-management-magazine/articles/2023/05/uncrewed-aerial-systems/security-implications-drones/
www.asisonline.org
The Security Implications of Drone Threats
While drones can be used for good, there are a variety of nefarious uses of the technology that threaten both physical and national security.
#استخدام
کارشناس نصب ، پشتیبانی آنتی ویروس و EDR
حضوری - فول تایم- ساکن تهران
🔆شرایط جذب :
-دانش شبکه در حد متوسط
-آشنایی با ویندوز سرور
-آشنایی با لینوکس
-توانایی در ترابل شوت شبکه و سیستم
-علاقمند به تحلیل لاگ EDR
-توانایی گزارش نویسی
-سابقه ۲ سال در فناوری اطلاعات
-دارای کارت پایان خدمت
◀️شرح شغل : نصب ، پشتیبانی آنتی ویروس و EDR
حضور در محل مشتری ها به تناوب برای سرکشی
همچنین دارای ماموریت شهرستان
🟢زمان کار: ۸ صبح تا ۵ بعدازظهر
پنج شنبه و جمعه تعطیل است مگر در زمان ماموریت و مواقع بحران
🔵مزایا
-پرداختی خالص 30 م تومان
-ماموریت ها و اضافه کاری و روز تعطیل طبق قانون کار پرداخت میگردد
-بیمه تکمیلی انجام میشود.
-کلیه هزینه های اقامت و سفر ( شهری با تپ سی و اسنپ و برون شهری با هواپیما) پرداخت میگردد
-آموزش آنتی ویروس و EDR داده خواهد شد.
✅️ارسال رزومه به ایمیل زیر:
حتما در عنوان ایمیل درج گردد کارشناس پشتیبانی EDR
detect@chmail.ir
🟥 لطفا با فوروارد این اطلاعیه، کمک کنید همکارمون رو پیدا کنیم.
#استخدام #همکاری
#cybersecurity
کارشناس نصب ، پشتیبانی آنتی ویروس و EDR
حضوری - فول تایم- ساکن تهران
🔆شرایط جذب :
-دانش شبکه در حد متوسط
-آشنایی با ویندوز سرور
-آشنایی با لینوکس
-توانایی در ترابل شوت شبکه و سیستم
-علاقمند به تحلیل لاگ EDR
-توانایی گزارش نویسی
-سابقه ۲ سال در فناوری اطلاعات
-دارای کارت پایان خدمت
◀️شرح شغل : نصب ، پشتیبانی آنتی ویروس و EDR
حضور در محل مشتری ها به تناوب برای سرکشی
همچنین دارای ماموریت شهرستان
🟢زمان کار: ۸ صبح تا ۵ بعدازظهر
پنج شنبه و جمعه تعطیل است مگر در زمان ماموریت و مواقع بحران
🔵مزایا
-پرداختی خالص 30 م تومان
-ماموریت ها و اضافه کاری و روز تعطیل طبق قانون کار پرداخت میگردد
-بیمه تکمیلی انجام میشود.
-کلیه هزینه های اقامت و سفر ( شهری با تپ سی و اسنپ و برون شهری با هواپیما) پرداخت میگردد
-آموزش آنتی ویروس و EDR داده خواهد شد.
✅️ارسال رزومه به ایمیل زیر:
حتما در عنوان ایمیل درج گردد کارشناس پشتیبانی EDR
detect@chmail.ir
🟥 لطفا با فوروارد این اطلاعیه، کمک کنید همکارمون رو پیدا کنیم.
#استخدام #همکاری
#cybersecurity
معرفی الکساندر بورگس و وبلاگش در مورد مهندسی معکوس
#آکادمی_روزبه
https://exploitreversing.com/2024/08/07/malware-analysis-series-mas-article-08/
#آکادمی_روزبه
https://exploitreversing.com/2024/08/07/malware-analysis-series-mas-article-08/
Exploit Reversing
Malware Analysis Series (MAS): article 08 | MacOS/iOS
The eighth article (62 pages) in the Malware Analysis Series (MAS), a step-by-step malware analysis and reverse engineering series, is available for reading on: (PDF): I hope this article helps pr…
استفاده از درایور های آسیب پذیر ولی امضا دار برای دورزدن کنترل های امنیتی نظیر EDR
مقاله ای خواندنی 👌
#آکادمی_روزبه
https://medium.com/@merasor07/byovd-a-kernel-attack-stealthy-threat-to-endpoint-security-ec809272e505
مقاله ای خواندنی 👌
#آکادمی_روزبه
https://medium.com/@merasor07/byovd-a-kernel-attack-stealthy-threat-to-endpoint-security-ec809272e505
Medium
BYOVD A Kernel Attack: Stealthy Threat to Endpoint Security
Introduction:
مقاله ی صبح شنبه
دیتا مدل های کشف
کاهش خطا در تحلیل های امنیتی
#آکادمی_روزبه
**حتی CrowdStrike هم ممکن است در تحلیل و ارائه رول برای کشف اشتباه کند . لذا چه کنیم که دچار خطا نشویم ؟
https://medium.com/@vanvleet/improving-threat-identification-with-detection-data-models-1cad2f8ce051
دیتا مدل های کشف
کاهش خطا در تحلیل های امنیتی
#آکادمی_روزبه
**حتی CrowdStrike هم ممکن است در تحلیل و ارائه رول برای کشف اشتباه کند . لذا چه کنیم که دچار خطا نشویم ؟
https://medium.com/@vanvleet/improving-threat-identification-with-detection-data-models-1cad2f8ce051
Medium
Improving Threat Identification with Detection Modeling
In this post, I’ll present a simple approach to detection modeling and demonstrate how a Detection Data Model helps identify threats.