Skip to main content
ClaudeWave
EN, English
Skill8k repo starsupdated 16d ago

offensive-bluetooth-classic

This skill provides hands-on techniques for exploiting Bluetooth Classic (BR/EDR) devices, including discovery methods, service enumeration via SDP, and attacks on legacy protocols like SPP and HID. Use it when assessing older car kits, industrial sensors, medical devices, and audio accessories running Bluetooth 4.0 or earlier that lack modern security patches, particularly for testing unauthenticated serial ports or verifying susceptibility to known vulnerabilities like KNOB.

Install in Claude Code
Copy
git clone --depth 1 https://github.com/SnailSploit/Claude-Red /tmp/offensive-bluetooth-classic && cp -r /tmp/offensive-bluetooth-classic/Skills/wireless/offensive-bluetooth-classic ~/.claude/skills/offensive-bluetooth-classic
Then start a new Claude Code session; the skill loads automatically.

SKILL.md

# Bluetooth Classic (BR/EDR) Attacks

Older than BLE, less commonly attacked today, but still present in cars, industrial sensors, audio gear, and legacy enterprise hardware. Many of the well-known historic attacks (BlueSnarf, BlueBug) are mitigated; KNOB and the BlueBorne family remain relevant against unpatched devices.

## Quick Workflow

1. Discover devices with `hcitool` / `bluetoothctl` / `redfang`
2. Enumerate exposed services via SDP
3. Test each service profile for unauth access
4. Check pairing crypto (KNOB applicability)
5. Proximity-physical attacks for legacy / unpatched

---

## Discovery

```bash
# Modern adapter (built-in or USB Bluetooth 4.0+)
sudo hciconfig hci0 up
sudo hcitool inq                       # inquiry
sudo hcitool scan --length=12          # 12-second scan

# bluetoothctl interactive
bluetoothctl
> scan on
> devices

# Discoverable-mode-only devices appear; non-discoverable need address brute
sudo redfang -r 00:00:00:00:00:00-FF:FF:FF:FF:FF:FF
# (very slow — ~7 hours per OUI prefix)
```

## Service Discovery (SDP)

```bash
# List all services on a device
sdptool browse AA:BB:CC:DD:EE:FF
sdptool records AA:BB:CC:DD:EE:FF
```

Common profiles and their attack relevance:

| Profile | UUID | Attack |
|---|---|---|
| OBEX Object Push (OPP) | 0x1105 | BlueSnarf/BlueBug on legacy phones (mostly extinct) |
| OBEX File Transfer (FTP) | 0x1106 | Browse / write filesystem on legacy devices |
| Headset (HSP/HFP) | 0x1108 / 0x111E | Eavesdrop active call audio |
| Serial Port Profile (SPP) | 0x1101 | Industrial/IoT debug ports — often unauthenticated |
| HID | 0x1124 | Keyboard/mouse impersonation |
| Audio Sink/Source (A2DP) | 0x110B / 0x110A | Audio injection/eavesdrop |

## SPP Abuse

The Serial Port Profile (SPP) tunnels arbitrary data over Bluetooth as a virtual COM port. Industrial / IoT devices use it for debug or telemetry, often without authentication.

```bash
# Connect to SPP service, channel typically 1
sudo rfcomm bind /dev/rfcomm0 AA:BB:CC:DD:EE:FF 1
sudo screen /dev/rfcomm0 9600
# Then interact with the device's CLI / debug menu
```

## KNOB (CVE-2019-9506)

Forces Bluetooth pairing to negotiate a 1-byte encryption key — making the link key trivially brute-forceable.

```bash
# Test with internalblue (requires Broadcom firmware patch)
git clone https://github.com/seemoo-lab/internalblue
internalblue
> log keys
# Patch firmware to allow 1-byte key; pair with target; observe weak key
```

Patched in firmware on most modern devices. Still works against:
- Older Broadcom-based devices (pre-2019 BCM chipsets)
- Embedded automotive Bluetooth stacks
- Cheap consumer audio gear

## BlueBorne (CVE-2017-1000251 et al.)

A family of buffer overflows / info leaks in major Bluetooth stacks (Linux BlueZ, Android, Windows, iOS). Mostly patched 2017–2018, but unpatched embedded Linux devices are common.

```bash
# Armis blueborne-scanner — checks for patch-level
git clone https://github.com/ArmisSecurity/blueborne
python blueborne_scanner.py AA:BB:CC:DD:EE:FF
```

## HID Spoofing (PoC)

If pairing succeeds via Just Works or weak PIN, you can register as a HID device — keystroke injection on an unattended Bluetooth-paired host.

```bash
# bdaddr + HID example — register custom HID on rfcomm
hcitool dev
hciconfig hci0 class 0x000540   # HID device class
sdptool add HID
# Use a HID descriptor crafted as keyboard, send keystrokes
```

## Audio Eavesdropping

If a target has Bluetooth headset paired and active, and you can re-pair (PIN brute or KNOB):

- HSP/HFP profiles let you become the peer and receive audio
- Some firmware allows simultaneous peer connections — eavesdrop without disrupting

## Engagement Cheatsheet

```bash
# 1. Discover
sudo hcitool inq

# 2. Enumerate services per device
sdptool browse <MAC>

# 3. SPP (industrial/IoT) — connect and explore
sudo rfcomm bind /dev/rfcomm0 <MAC> 1
sudo screen /dev/rfcomm0 9600

# 4. Patch-level scan
python blueborne_scanner.py <MAC>

# 5. KNOB testing (with adapter that supports internalblue)
internalblue → log keys → re-pair target

# 6. Document profiles, auth state, exposed commands per device
```

## Detection

- No native Bluetooth Classic IDS in most environments
- Active inquiry visible to nearby Bluetooth-aware monitoring (rare)
- Re-pairing prompts on target devices may surface to users

## Reporting

- Identify chipset + firmware version per device (often visible in service records)
- Map CVE applicability (BlueBorne, KNOB, BlueFrag, et al.)
- Document specific profile abuses (SPP exposed without auth, HID spoofing successful, etc.)

---

## Key References

- internalblue: github.com/seemoo-lab/internalblue
- KNOB attack: knobattack.com
- BlueBorne: armis.com/blueborne
- Bluetooth Core Spec — Volume 2 (BR/EDR Controller)
- Source: https://github.com/SnailSploit/offensive-checklist/blob/main/wireless.md
offensive-active-directorySkill

Active Directory attack methodology for internal network red team engagements. Covers reconnaissance (BloodHound, PowerView, ADExplorer), credential abuse (Kerberoasting, ASREProasting, NTLM relay, LLMNR/NBT-NS poisoning), privilege escalation (ACL abuse, GPO abuse, unconstrained/constrained delegation), lateral movement (Pass-the-Hash, Pass-the-Ticket, Overpass-the-Hash, WMI/WinRM/PsExec), persistence (Golden/Silver/Diamond Tickets, DCSync, DCShadow, AdminSDHolder, Skeleton Key), forest trust attacks, ADCS abuse (ESC1-ESC15), and modern MDI/Defender for Identity evasion. Use when assessing on-prem AD, hybrid AD/Entra ID environments, or ADCS deployments.

offensive-advanced-redteamSkill

Comprehensive red team operations methodology covering full engagement lifecycle from planning through reporting. Addresses engagement scoping and rules of engagement negotiation, multi-tier C2 infrastructure design with redirectors and domain fronting, malleable traffic profiles and beacon tradecraft, OPSEC discipline including attribution avoidance and indicator management, EDR and AMSI evasion techniques using direct syscalls and unhooking, data collection with chain-of-custody controls, and structured reporting with purple team debrief workflows. Covers assumed-breach, external-to-internal, insider threat, and hybrid physical-cyber engagement scenarios with MITRE ATT&CK mapping throughout. Targets operators planning or executing adversary simulation engagements against mature defenders.

offensive-ai-securitySkill
offensive-anti-forensicsSkill

Anti-forensics and evidence destruction techniques for red team operators conducting authorized engagements. Covers log clearing on Windows (wevtutil, Clear-EventLog, ETW provider patching) and Linux (journal truncation, utmp/wtmp binary editing, syslog manipulation), timestamp manipulation via Timestomp and SetMACE to defeat timeline analysis, filesystem-level anti-forensics including NTFS Alternate Data Streams for payload hiding and secure deletion with sdelete/shred, memory artifact removal to counter live forensics, disk artifact manipulation targeting MFT entries and USN journal records, network forensics evasion through encrypted C2 channels and DNS-over-HTTPS tunneling, and anti-VM/sandbox detection to avoid dynamic analysis environments. Tools: Timestomp, wevtutil, sdelete, shred, MimiPenguin, Invoke-Phant0m. Aligns to MITRE ATT&CK T1070 (Indicator Removal), T1027 (Obfuscated Files or Information), T1497 (Virtualization/Sandbox Evasion). Each technique includes the forensic artifact it targets, the destruction or manipulation method, and the defender perspective so operators understand detection gaps they must account for.

offensive-api-abuseSkill

Advanced API exploitation methodology focused on business logic abuse and sophisticated attack patterns that bypass traditional security controls. Covers business logic bypass through API call chaining and workflow manipulation. Addresses GraphQL-specific attacks including batching for credential brute-force, query depth exploitation, and introspection abuse. Includes pagination exploitation for data exfiltration, webhook hijacking for SSRF and data interception, and resource exhaustion through algorithmic complexity attacks. Covers race conditions in API transactions using parallel request techniques. Provides comprehensive JWT manipulation including algorithm confusion, kid injection, jku/x5u abuse, and claim tampering. Details API key leakage detection across source repositories, client-side code, and error messages. Covers undocumented endpoint discovery through predictable naming, debug routes, and source map analysis. Tooling includes Arjun, ParamSpider, jwt_tool, and GraphQL Voyager. Designed for authorized penetration testers targeting business logic layers that automated scanners miss.

offensive-api-securitySkill

Comprehensive API security testing methodology covering REST, gRPC, and WebSocket attack surfaces. Addresses the full OWASP API Security Top 10 2023 including BOLA/IDOR, broken authentication, excessive data exposure, rate limiting bypass, BFLA, mass assignment, SSRF, and security misconfiguration. Includes REST-specific attacks such as HTTP verb tampering, content-type switching, and parameter pollution. Covers gRPC exploitation through protobuf interception, reflection API enumeration, and metadata injection. Addresses WebSocket vulnerabilities including origin bypass, message injection, and cross-site WebSocket hijacking. Provides tooling guidance for Burp Suite, Postman, grpcurl, websocat, and mitmproxy. Each technique includes detection signatures and defensive indicators so you understand what artifacts your testing leaves behind. Designed for authorized penetration testing engagements against API-driven architectures.

offensive-basic-exploitationSkill
offensive-bluetooth-bleSkill

Bluetooth Low Energy (BLE) attack methodology — GATT enumeration, characteristic read/write without auth, pairing downgrade (Just Works forced), LE Secure Connections bypass, MITM via active relay, sniffing with Sniffle (TI CC1352) / Ubertooth / Frontline, encryption key extraction (LE Legacy Pairing crackable, LE Secure Connections strong), proximity authentication abuse (cars, locks), and companion-app trust analysis. Use for IoT BLE devices, smart locks, fitness trackers, medical devices, BLE beacons, or any device pairing over BLE.