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Manuel M. shares his experience with the HTB (Hack The Box) module, which is teaching him how to identify vulnerabilities in codebases. He finds the process intellectually stimulating and rewarding, despite the challenging job market. The module is helping him broaden his understanding of cybersecurity, particularly in vulnerability assessment.
You Should Know:
1. Basic Code Vulnerability Scanning with Python:
import re
def scan_for_vulnerabilities(code):
<h1>Example: Detect potential SQL injection vulnerabilities</h1>
sql_injection_pattern = re.compile(r"SELECT.<em>FROM.</em>WHERE.<em>\bOR\b.</em>\b=\b.*\b--")
if sql_injection_pattern.search(code):
print("Potential SQL Injection vulnerability detected!")
else:
print("No SQL Injection vulnerabilities found.")
<h1>Example usage</h1>
code_sample = "SELECT * FROM users WHERE username = 'admin' OR 1=1 --"
scan_for_vulnerabilities(code_sample)
2. Linux Command for Network Scanning:
nmap -sV -p 1-65535 <target_ip>
This command scans all ports on a target IP address to identify open ports and services.
3. Windows Command for Checking Open Ports:
netstat -an | find "LISTENING"
This command lists all listening ports on a Windows machine.
4. Bash Script for Automated Vulnerability Scanning:
#!/bin/bash TARGET=$1 echo "Scanning $TARGET for vulnerabilities..." nmap -sV --script=vuln $TARGET
Save this script as `vuln_scan.sh` and run it with ./vuln_scan.sh <target_ip>.
5. Linux Command for File Permission Check:
find /path/to/directory -type f -perm 777
This command finds files with overly permissive permissions (777) in a specified directory.
6. Windows Command for User Account Enumeration:
net user
This command lists all user accounts on a Windows system.
7. Python Script for XSS Vulnerability Detection:
def detect_xss(payload):
xss_patterns = ["<script>", "onerror=", "javascript:"]
for pattern in xss_patterns:
if pattern in payload:
print(f"Potential XSS vulnerability detected: {pattern}")
return
print("No XSS vulnerabilities found.")
<h1>Example usage</h1>
payload = "<script>alert('XSS')</script>"
detect_xss(payload)
8. Linux Command for Log Analysis:
grep "Failed password" /var/log/auth.log
This command searches for failed login attempts in the authentication log.
9. Windows Command for Service Enumeration:
sc query
This command lists all services on a Windows machine.
10. Bash Script for Automated Backup:
#!/bin/bash BACKUP_DIR="/backup" SOURCE_DIR="/var/www/html" tar -czf $BACKUP_DIR/backup_$(date +%F).tar.gz $SOURCE_DIR
Save this script as `backup.sh` and run it to create a compressed backup of the specified directory.
What Undercode Say:
Exploring vulnerabilities in codebases is a critical skill in cybersecurity. Tools like HTB provide hands-on experience that is invaluable for understanding real-world scenarios. By combining automated scripts with manual analysis, you can effectively identify and mitigate potential security risks. Always ensure you have the necessary permissions before performing any scans or tests on systems.
References:
Reported By: Activity 7303185875029372928 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
