DeDRM Standalone GUI

One-click DRM removal for Kindle / Adobe / B&N / LCP ebooks. No Calibre required. Drag, drop, decrypt.

Quick Start

1. Download DeDRM_GUI.exe from Releases
2. Double-click to launch
3. Drag your encrypted ebook into the window → click Decrypt

First use: click Refresh Keys once (auto-extracts keys from installed Kindle/ADE apps).

Supported Formats

Source	Format	Handler	Output
Kindle for PC (traditional)	.azw .azw3 .mobi	mobidedrm / kfxdedrm	.azw3
Kindle for PC 2.8+ (separated)	.azw + .voucher + .res	auto-wrap → kfxdedrm	.azw3
Kindle e-ink (Paperwhite/Oasis)	.kfx + assets/voucher	recursive auto-wrap → k4mobidedrm	.azw3
Kindle UWP / MS Store	.kfx-zip (CONT container)	kfxlib (zero deps)	.epub
Amazon "Download & transfer via USB"	.azw3	mobidedrm	.azw3
Adobe Digital Editions	.epub .pdf	ineptepub / ineptpdf	.epub / .pdf
B&N / Nook	.epub	ineptepub (PassHash)	.epub
Readium LCP	.epub	lcpdedrm	.epub

Workflows

Kindle for PC (traditional installer)

Click Refresh Keys — auto-scans registry, runs KFXKeyExtractor28.exe. Then drag .azw → Decrypt.

Kindle UWP / Microsoft Store

Click Refresh Keys — auto-runs MSIXKFXArchiver.exe (hooks running Kindle process, needs ~400MB temp space). Output .kfx-zip can be dragged in directly for zero-dependency CONT→EPUB conversion via bundled kfxlib.

Kindle e-ink device

Enter serial in Serials & PIDs Tab. Copy book folder from device via USB. Drag .kfx — auto-detects assets/voucher recursively.

Adobe / B&N / LCP

Use Adobe Keys / B&N Keys tabs to scan or import keys. Drag .epub/.pdf → Decrypt.

Key Extraction (Refresh Keys)

① kindlekey.kindlekeys()      ← Registry scan (K4PC traditional)
② KFXKeyExtractor28.exe       ← Memory extraction (Kindle 2.8+)
③ MSIXKFXArchiver.exe         ← TPM + Hook (UWP/MS Store)
④ Frida (optional)            ← pip install frida frida-tools

Collected keys are automatically de-duplicated and imported.

Drag & Drop

File	Action
.azw .epub .pdf .kfx .mobi .kfx-zip	Load into Decrypt Tab
.k4i	Import Kindle account key
.der	Import Adobe ADE key
.b64	Import B&N key
kfxkey / keyfile (no extension)	Set KFX voucher key file

Tabs

Tab	Purpose
Decrypt	File input, type detection, decrypt, log, Refresh Keys
Kindle Keys	Scan/import K4PC keys, manual serial/PID
Adobe Keys	Scan/import ADE keys, PDF passwords
B&N Keys	Scan/generate Nook PassHash keys
Serials & PIDs	Kindle serial numbers, eReader PIDs
Settings	Font deobfuscation, watermark removal, KFX voucher path

Architecture

standalone_gui/
├── main.py              ← Entry point
├── compat.py             ← DeDRM import bootstrap
├── app_config.py         ← JSON config manager
├── main_window.py        ← QMainWindow + drag-drop
├── tabs/                 ← 6 tab widgets
├── workers/              ← QThread decrypt + key scan
└── tools/                ← KFXKeyExtractor28.exe + MSIXKFXArchiver.exe

DeDRM_plugin/
├── kfxlib/               ← CONT container parser (35 files, zero Calibre deps)
├── kfxlib_standalone.py  ← Calibre stub injection → YJ_Book → EPUB
├── (original DeDRM code unchanged)

Run from Source

pip install pycryptodome lxml PyQt6
python standalone_gui/main.py

Build

pip install pyinstaller
pyinstaller dedrm_gui.spec
# → dist/DeDRM_GUI.exe

To compile MSIXKFXArchiver.exe (requires VS 2022 BuildTools):

python Other_Tools/KRFKeyExtractor/compile_msix.py

Credits

• noDRM/DeDRM_tools — Calibre DeDRM plugin
• Satsuoni/DeDRM_tools — maintained fork
• KFX Input plugin by John Howell (kfxlib/) — CONT container parsing
• Apprentice Harper, Apprentice Alf — original DeDRM tools
• The Dark Reverser — MobiDeDRM
• i♥cabbages — Adobe ADEPT scripts
• meaclam, uhuxybim — LCP decryption

License

GPL v3