DissPair v2.1.2

Bug Fixes.
Now availaible on F-Droid: https://f-droid.org/packages/org.disspair.disspair/

DissPair v2.1.1

APK is ready to be pushed to f droid

v2.1

Bug Fixes

DissPair v2

DissPair v2.0 — Release Notes

April 2026 · Native Android · Kotlin + Jetpack Compose

---

What's new

🔧 Architecture — Complete native rewrite

Migrated entirely from Python/Kivy to native Kotlin with Jetpack Compose. App size drops from 36 MB → 12 MB (67% reduction) with faster startup, lower memory footprint, and direct access to Android Bluetooth APIs — no JNI bridging required.

✨ New — BLE GATT read & write

The BLE Tool is now supports reading and writing characteristics directly. Supports ASCII and raw hex input, with a live HEX / ASCII display toggle.

✨ New — Classic payload delivery

The Classic Tool now includes a payload dialog with predefined AT commands and OBEX Connect PDUs, plus a custom entry field. Automatic HFP handshake detection and bypass is performed before payload injection.

⚡ Improved — Scan filtering toggles

New per-toggle filters for Paired and Unknown devices help declutter scan results when focusing on specific targets. Paired devices load automatically from the bond cache on startup.

⚡ Improved — UI/UX polish

Overhauled interface with consistent dark theming, color-coded log output, device class tags, and smoother overlay transitions across both the Classic and GATT auditors.

---

At a glance

	v1	v2
Language	Python / Kivy	Kotlin / Jetpack Compose
App size	~36 MB	~12 MB
BLE GATT write	✗	✓
Classic payloads	✗	✓
HFP auto-bypass	✗	✓
Scan filters	✗	✓

---

For installation instructions and build steps, see the README.
To report a vulnerability or abuse, see the Security Policy.

---

Virus Total Report: https://www.virustotal.com/gui/file/b8da497be5374b58fadf9ba2b66834e4bfa66d06d9281c0a98217855b1e2d7f0?nocache=1

⚠️ Authorized Use Only
Use this tool exclusively on devices you own or have explicit written permission to test. Unauthorized use may violate local laws.

Risk Disclosure
This tool contains features that can cause operational disruption if misused:

• RFCOMM Flooding — injects dense byte streams that may cause buffer overflows, device freezes, or DoS on vulnerable stacks
• Payload Injection — raw AT command injection can alter device state or trigger DoS

The developer assumes no liability for misuse or damage. For concerns or abuse reports, see the Security Policy.

DissPair v1

📡 DissPair v1.0 — Initial Release

First public release of DissPair, a Bluetooth protocol analysis toolkit
for studying RFCOMM channel behavior on devices you own in a lab environment.

---

What's Included

• Classic BR/EDR Scanner — Discovers nearby Bluetooth Classic devices
  using Android's standard discovery API
• RFCOMM Channel Analyzer — Probes channels 1–30 via direct connection
  attempts to map which channels are active, supplementing what SDP advertises
• AT Command Probe — Sends a standard Hayes AT command sequence to study
  how your device's serial profile responds to modem commands
• Flood Test — Transmits a sustained data stream (64 B – 64 KB,
  adjustable) to observe how your device handles connection load and
  buffer behavior under pressure

---

Installation

1. Download disspair.apk below
2. On your Android device, allow Install unknown apps
3. Grant Location and Nearby Devices permissions when prompted

---

Requirements

• Android 8.0+ (API 26 minimum)
• Bluetooth Classic capable device
• Android 12+ requires Nearby Devices permission

---

VirusTotal Report

https://www.virustotal.com/gui/file/94710a348bdcfcd1d0dd4ebc87c6a2650588a75c0b0056d6d19ed51f2ab40c63?nocache=1

---

⚠️ Authorized Use Only
This tool is intended strictly for use on devices you own or have explicit
written permission to test. Unauthorized use against third-party devices may
violate local laws.

⚠️Potentially Harmful Capabilities & Risk Disclosure

This tool is strictly intended for educational purposes, security research, and authorized security auditing. It contains features that can cause operational disruption to target hardware if used improperly:

1. RFCOMM Hardware Flooding: The "Flood" module intentionally injects dense byte streams into targeted Bluetooth channels. On vulnerable, legacy, or unpatched Bluetooth stacks, this can cause buffer overflows, resulting in the target device freezing, kernel panics, or complete Denial of Service (DoS).

2. Payload Injection & State Manipulation: The ability to inject raw AT commands can alter the operational state of target devices, potentially causing Denial of Service(DoS).

The developer assumes no liability for misuse or damage caused by this software. Use exclusively on hardware you own or have explicit consent to audit.
For raising any concerns or Misuse of the tool please read our Security Policy