NTE History Exporter

Prototype CLI exporter for Neverness to Everness pull history — decodes your own game traffic into sanitized JSON ready for tracker import.

Supported Banners

System	Banner	Banner ID	Pity pool
Monopoly	Standard Board	Lottery_Permanent	Per-banner
Monopoly	Limited Character Board	Lottery_LimitedCharacter	Shared
Gashapon	Arc Miracle Box	Arc_MiracleBox	Shared
Gashapon	Mystery Box	Gashapon_MysteryBox	Per-rotation

What It Does

The exporter decodes Permanent Board, Limited Character Board, Arc Miracle Box, and Mystery Box history pages from captured UDP data, applies conservative timestamp-boundary handling, and writes sanitized JSON suitable for tracker import.

Note

The import JSON contains decoded history rows and the shareable NTE user UID when it can be detected. It does not export tokens, account IDs, role IDs, device IDs, server IPs, raw packets, cookies, session data, or other capture metadata.

Requirements

• Python 3.10 or newer when running from source. Release binaries include the Python runtime.
• Packet-capture permission. On Windows, Npcap can usually capture without running this tool as Administrator; the raw-socket fallback may need Administrator. On Linux and macOS, use root or capture capabilities as required by your system.
• Windows: Npcap is recommended. Install it normally; WinPcap API-compatible mode is not required. If Npcap is unavailable or cannot be initialized, auto falls back to the Windows built-in raw-socket backend.
• Linux: install the system libpcap runtime if it is not already present. Package names commonly include libpcap0.8 on Debian/Ubuntu and libpcap on Fedora, Arch, and similar distributions.
• macOS: the system normally includes libpcap, so no separate Npcap installation is needed.

Npcap is Windows-only and is not bundled with this project. Linux and macOS use libpcap, the cross-platform capture library on which Npcap is based.

Downloads

Compiled command-line builds are published on the GitHub Releases page:

• nte-history-exporter.exe for Windows
• nte-history-exporter-linux for Linux
• nte-history-exporter-macos for macOS
• Versioned .zip archives for each platform

The Windows executable is a single console app. Start it from a terminal:

.\nte-history-exporter.exe

On Linux and macOS, make the downloaded binary executable before running it. Use sudo only when your system requires elevated capture permission:

chmod +x ./nte-history-exporter-linux
sudo ./nte-history-exporter-linux

Use nte-history-exporter-macos in the same way on macOS. If your browser or OS blocks a downloaded macOS binary, allow it from the system security prompt before running it again.

Usage

Live capture

The default auto capture backend uses:

• Windows: Npcap when installed, with automatic fallback to the built-in Windows raw-socket backend.
• Linux/macOS: the system libpcap library.

Use --capture-backend libpcap to require Npcap/libpcap without fallback, or --capture-backend raw to require the Windows raw-socket backend.

Windows

Downloaded executable:

.\nte-history-exporter.exe

From source:

.\run-exporter.ps1

Or simply double-click run-exporter.cmd.

Important

For automatic user UID and account-server detection, launch the tool before pressing Start on the game's main menu. If you are already in game, history capture can still work; the tool will ask for missing account details before saving.

Once running, open any supported history board in game. The tool keeps listening until you press any key. After it prints and saves the results, press any key again to close the exporter. Exports are written under exports\ as:

• <user_uid>_Permanent_<date_time>.json
• <user_uid>_Limited_<date_time>.json
• <user_uid>_Arc_<date_time>.json
• <user_uid>_MysteryBox_<date_time>.json

If the user UID is not detected automatically, the console asks for it before saving. Leaving it blank saves as unknown_<banner>_<date_time>.json, but may prevent import on some trackers.

The export also includes server_id and account_region when known. If the initial TCP server-selection response was missed, the console offers Asia, America, Europe, and SEA as a numbered choice. The prompt can be left blank to omit server information.

Exports are not copied to the clipboard by default. Add --copy-clipboard to copy a single captured banner's JSON after saving. If multiple banners are captured in the same run, clipboard copy is skipped so one banner does not overwrite another.

If a page response is missed, the exporter reports the missing page number while capture is still running. Leave the exporter open, close and reopen that history board, then scroll down again. Scrolling backward within the existing view does not request the cached pages again. The replacement capture is accepted and the tool confirms when the gap has been recovered. If reopening the board still produces no page messages, return to the main menu and re-enter the game to start a fresh connection.

Linux/macOS

Downloaded executable, using sudo when your system requires elevated capture permission:

chmod +x ./nte-history-exporter-linux
sudo ./nte-history-exporter-linux

From source, install the project and ensure the system libpcap runtime is available:

python3 -m venv .venv
source .venv/bin/activate
python -m pip install -e .
sudo .venv/bin/nte-history-exporter

macOS normally includes libpcap. On Linux, install the distribution's libpcap runtime package if it is not already present. Capture can also be granted through platform-specific capabilities instead of running the whole exporter with sudo.

File replay

Downloaded executable:

.\nte-history-exporter.exe capture.flows

From source:

.\run-exporter.ps1 capture.flows

Decodes a mitmproxy .flows capture instead of listening live — used for research and testing.

Options

Flag	Effect
--live	Capture live UDP traffic instead of reading a file.
--debug	Also write the research CSV and privacy-safe capture diagnostics.
--user-uid <uid>	Override the auto-detected NTE user UID in the JSON export.
--copy-clipboard	Copy a single live export JSON to clipboard after saving.

Advanced live-capture selection:

--capture-backend auto      Prefer Npcap/libpcap; fall back to raw sockets on Windows
--capture-backend libpcap   Require Npcap on Windows or libpcap on Linux/macOS
--capture-backend raw       Require the Windows raw-socket backend

The --debug CSV holds decoded research fields, including raw captured history records. A separate versioned *.diagnostics.json sidecar provides shareable reason codes and counts without payloads, network addresses, ports, packet timestamps, or user UID values. See Capture diagnostics.

The exporter automatically includes the shareable NTE user UID when it appears in the capture. If a short capture does not include it, the console asks before saving; you can also pass it explicitly with --user-uid.

Tip

For reliable deduplication, start from page 1 and scroll through the pages. If you only want pages 1–5, scroll through to page 6 as well just to be on the safe side.

Mapping maintenance

Reward metadata can be rebuilt directly from the latest NTE_Assets tables and English translation files. The reward snapshot may change IDs while UID inputs remain untouched:

Run Update reward mappings from the GitHub Actions tab to generate and test the snapshot in a reviewable pull request, or run it locally:

python tools/update_mappings.py

This rebuilds reviewable reward-map candidates directly from NTE_Assets under build/mapping-update/; committed mappings are untouched unless --apply is explicitly supplied. The snapshot may include additions, updates, and removals, while pool mappings and UID inputs remain untouched. See Reward mapping updates for the source rules and review workflow.

Privacy

Caution

Sanitized exports are intended for tracker import and should not contain anything especially harmful, but they can identify the game account via user UID and pull history. Share exports only with verified sources, such as known trackers. Do not commit packet captures, generated exports, research briefs, or personal account data. The repository keeps exports/ as an empty output folder but ignores everything generated inside it.

Boundary Policy

NTE history records do not appear to contain a unique server-side roll ID. UIDs are generated from decoded record fields and the record's order within all rows sharing the same raw timestamp.

History always loads page 1 first and is scrolled downward, so the exporter anchors to the continuous run of pages starting at page 1 and ignores anything after the first gap (with a warning). This keeps the newest pages even if a later page is lost, and guarantees the newest timestamp group's ordinal 0 is captured.

Within a timestamp group, ordinal 0 is the newest record and unseen rows can only append after the captured ones, so every exported UID is stable — including a partially captured oldest 10-pull. All decoded rows are therefore exported. Re-scanning later simply adds any rows that were not yet captured, with the same UIDs for the rows already seen.

For Monopoly, Points Gift and Chase Reward rows stay in the timestamp group for UID ordinal generation, but only result_type = dice rows count toward pull-set sizing. Arc pulls are always 10-pulls. Mystery Box records are single pulls and the final page may contain fewer than five records. Every captured group is exported, including an incomplete oldest pull set, because its captured prefix is ordinal-stable.

Adapters

Current

• Live Npcap/libpcap capture on Windows, Linux, and macOS
• Live Windows raw-socket fallback
• mitmproxy .flows research decoder

Planned

• Optional pktmon diagnostics for capture-drop investigation
• UI wrapper around the CLI

Example Run