Exploiting Reversing Series (ERS) and Malware Analysis Series (MAS) by Alexandre Borges

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2025-02-11

Alexandre Borges, a Vulnerability Researcher and Exploit Developer, has published 14 articles totaling 988 pages aimed at assisting the cybersecurity community. These articles are divided into two series: the Exploiting Reversing Series (ERS) and the Malware Analysis Series (MAS).

Exploiting Reversing Series (ERS)

Malware Analysis Series (MAS)

Blog Home Page

Blog Home Page

Practical Commands and Codes

Here are some practical Linux commands and codes that can be useful in cybersecurity:

1. Network Scanning with Nmap

nmap -sP 192.168.1.0/24

This command scans the network to find active devices.

2. File Integrity Check with SHA256

sha256sum filename

This command generates a SHA256 checksum for a file to verify its integrity.

3. Log Analysis with Grep

grep "Failed password" /var/log/auth.log

This command searches for failed login attempts in the auth log.

4. Packet Capture with Tcpdump

tcpdump -i eth0 -w capture.pcap

This command captures network packets on the eth0 interface and saves them to a file.

5. Malware Analysis with Strings

strings suspiciousfile

This command extracts printable strings from a binary file, which can be useful in malware analysis.

What Undercode Say

In the realm of cybersecurity, understanding and utilizing the right tools and commands is crucial. Alexandre Borges’ series on Exploiting Reversing and Malware Analysis provides an in-depth look into these areas, offering valuable insights and practical knowledge. Here are some additional Linux commands and resources that can further enhance your cybersecurity skills:

1. SSH Hardening

sudo nano /etc/ssh/sshd_config

Edit the SSH configuration file to disable root login and change the default port.

2. Firewall Configuration with UFW

sudo ufw enable
sudo ufw allow 22/tcp

Enable the Uncomplicated Firewall (UFW) and allow SSH traffic.

3. Intrusion Detection with AIDE

sudo aide --init
sudo mv /var/lib/aide/aide.db.new /var/lib/aide/aide.db

Initialize and configure AIDE for file integrity checking.

4. Web Server Log Analysis

awk '{print $1}' /var/log/apache2/access.log | sort | uniq -c | sort -nr

This command lists the most frequent IP addresses accessing your web server.

5. Database Security with MySQL

mysql_secure_installation

Run this script to improve the security of your MySQL installation.

6. Automated Security Audits with Lynis

sudo lynis audit system

Perform a comprehensive security audit on your system.

7. Password Policy Enforcement

sudo nano /etc/pam.d/common-password

Edit the PAM configuration to enforce strong password policies.

8. Kernel Hardening with Sysctl

sudo nano /etc/sysctl.conf

Modify kernel parameters to enhance security.

9. File Permissions and Ownership

sudo chmod 600 /etc/shadow
sudo chown root:root /etc/shadow

Ensure sensitive files have the correct permissions and ownership.

10. Regular System Updates

sudo apt-get update && sudo apt-get upgrade

Keep your system up to date with the latest security patches.

For more detailed guides and advanced techniques, refer to Alexandre Borges’ articles and the provided links. Continuous learning and practical application of these commands will significantly bolster your cybersecurity defenses.

Additional Resources:

By integrating these commands and resources into your daily practices, you can build a robust security posture and stay ahead of potential threats.

References:

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