79612197a1
Manual-trigger firmware toolkit for pentesting owned devices: - Pin Scan: UART/JTAG/SWD detection (baud est + IDCODE reads) - V-Sense: target voltage probe w/ logic-family guess - UART Sniff: passive capture + manual-only frame replay - USB Enum: ESP32-S3 host, read-only descriptor fingerprinting - DefCred: single-host factory-default login check, rate-limited Modular shell (core/ + modules/), PlatformIO build, hardware/safety docs. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AAhMHMRAQLQ9hSbBECKNfn
51 lines
2.2 KiB
Markdown
51 lines
2.2 KiB
Markdown
# Card-Crack
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A manual-trigger hardware/network **recon toolkit** for the
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[M5Stack Cardputer](https://docs.m5stack.com/en/core/Cardputer) (ESP32-S3),
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built for **home-lab pentesting of devices you own** — your router, a car's
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OBD/USB port, a PC, smart appliances.
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> ⚠️ **Authorized use only.** Every tool here is scoped for your own bench:
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> single targets you enter by hand, curated default-credential lists (not
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> brute-force), rate-limited network checks, and read-only descriptor/ID
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> reads. Nothing scans, transmits, or replays on its own — you press the
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> action key. Don't point it at anything you don't own or run.
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## Modules
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| Module | What it does |
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|-------------|---------------------------------------------------------------------|
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| **Pin Scan**| JTAGulator-style detection of **UART / JTAG / SWD** pins on the probe header. UART baud estimation; JTAG & SWD IDCODE reads. |
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| **V-Sense** | Live target-voltage probe through a divider; guesses the logic family so you know what you're touching before driving a pin. |
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| **UART Sniff** | Passive UART capture (hex+ascii, selectable baud); freeze a frame and **replay it on a keypress** (manual TX only). |
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| **USB Enum**| ESP32-S3 as USB host — reads **descriptors** (VID/PID, class, strings, config) to fingerprint an unknown device. Read-only. |
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| **DefCred** | Checks a single host (default: gateway) against a short list of **factory-default logins** over HTTP Basic Auth. Stops on first hit. |
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## Build & flash
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Requires [PlatformIO](https://platformio.org/).
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```bash
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# set your lab Wi-Fi for the DefCred module (or edit defcred.cpp)
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pio run -e cardputer \
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-a "--build-property build.flags=-DCC_WIFI_SSID='\"MyAP\"' -DCC_WIFI_PASS='\"secret\"'"
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pio run -e cardputer -t upload
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pio device monitor
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```
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## Controls
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- Menu: `;` up · `.` down · `Enter` open
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- In a module: <code>`</code> (backtick) back · per-module hints on the bottom bar
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## Layout
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```
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src/core/ shell, module interface, UI helpers, pin map
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src/modules/ one file per recon tool
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docs/ HARDWARE.md wiring + safety
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```
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See **[docs/HARDWARE.md](docs/HARDWARE.md)** before wiring — the S3 is a 3V3
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part and 5V on a bare GPIO will destroy it.
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