CLASSIFIED OPERATION: DEEP PACKET INSPECTION & NETWORK FORENSICS
STATUS: CONCLUDED | AUTHOR: MR. CIPHER-X [C|THE]
This repository details a tactical Network Traffic Analysis operation. Leveraging deep packet inspection (DPI) on raw .pcap files, the objective was to dissect network protocols, identify data exfiltration attempts (such as DNS tunneling), reconstruct malicious TCP streams, and extract cleartext credentials broadcasted over insecure channels.
graph TD;
A[Raw Packet Capture .pcap] -->|Wireshark / tshark| B(Protocol Dissection);
B --> C{Traffic Layer Analysis};
C -->|HTTP / FTP / Telnet| D[Cleartext Protocol Inspection];
C -->|DNS / ICMP| E[Covert Channel Detection];
C -->|HTTPS / TLS| F[Encrypted Handshake Analysis];
D -->|Follow TCP Stream| G[Extract Stolen Credentials];
E -->|High Query Volume/Anomalous Payloads| H[Identify DNS Tunneling / DGA];
F -->|JA3 Hash Mismatch / Invalid Cert| I[Detect Rogue C2 Beacon];
G --> J[Compile Network IOCs & Signatures];
H --> J;
I --> J;
style A fill:#1a1a1a,stroke:#00FFFF,stroke-width:2px;
style J fill:#1a1a1a,stroke:#8A2BE2,stroke-width:2px;
| Threat Vector | Indicators of Compromise (IOCs) | Detection Technique | Tactical Mitigation / Response |
|---|---|---|---|
| Cleartext Credential Harvesting | Passwords transmitted via HTTP POST or FTP | TCP Stream Reassembly | Force HTTPS/FTPS, invalidate compromised credentials. |
| DNS Tunneling (Exfiltration) | Excessively long TXT records, abnormal query length | DNS Traffic Baseline Comparison | Implement DNS sinkhole, restrict outbound queries to approved resolvers. |
| Rogue C2 Beaconing | Repeated SYN packets to unknown external IPs on anomalous ports | Connection Flow Analysis | Drop traffic at perimeter firewall, update IDS/IPS signatures. |
(Note: Target network topologies and raw IP addresses are classified. The following evidence represents reconstructed streams and protocol filters.)
[ OPERATION TERMINATED - NETWORK SECURED ]