registry / claude-codex-wechat / 0.1.18

claude-codex-wechat@0.1.18

`claude-codex-wechat` 是一个本地 bridge daemon。它把：

AI Security Review

scanned 3d ago · by lpm-firewall-ai

User-invoked start creates a persistent local bridge daemon and default relay tunnel. The relay server can forward HTTP requests into the local admin/API surface, which can drive Claude Code or Codex sessions.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Running `claude-codex-wechat start` or default CLI start

Impact

Remote relay/authorized WeChat control can steer local Claude/Codex agents and access bridge APIs; risk depends on relay/auth trust and intended deployment.

Mechanism

persistent relay-backed local AI-agent bridge

Attack narrative

On user start, the package installs/starts a background daemon, listens broadly, generates relay credentials, and connects to a default WebSocket relay. Relay messages are translated into local HTTP requests against the bridge API, whose documented purpose is to let WeChat users drive local Claude Code/Codex sessions. This is not install-time malware, but it is a real remote agent-control surface with persistence.

Rationale

Source inspection does not support a malicious install-time payload or hidden decode-execute behavior, but the package exposes a persistent relay-controlled AI-agent bridge by default after user start. That dangerous capability is documented and package-aligned, so warn rather than block.

Evidence

package.jsonREADME.mdconfig.example.jsondist/server/cli.js~/.claude-codex-wechat/config.json~/Library/LaunchAgents/com.claude-codex-wechat.plist~/.config/systemd/user/claude-codex-wechat.service~/.claude-codex-wechat/service.pid~/.claude-codex-wechat/logs/service.stdout.log~/.claude-codex-wechat/logs/service.stderr.log

Network endpoints5

ilinkai.weixin.qq.comnovac2c.cdn.weixin.qq.com/c2cwss://wechat.style520.com/agent127.0.0.1:87870.0.0.0:8787

Decision evidence

public snapshot

AI called this Suspicious at 78.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for block

dist/server/cli.js starts a Fastify daemon on host 0.0.0.0 port 8787 by default.
dist/server/cli.js auto-generates relay credentials and connects to wss://wechat.style520.com/agent when daemon starts.
Relay handler proxies relay-supplied HTTP requests to http://127.0.0.1:<port><path>.
Local/admin APIs can attach/start Claude Code or Codex sessions and spawn codex/claude app-server/CLI processes.
start command installs persistent launchd/systemd-user service or detached Windows process.

Evidence against

No npm install/postinstall/preinstall lifecycle execution; prepublishOnly only builds before publishing.
Scanner remote decode/execute hint is noisy: mediaDownloader fetches WeChat media, AES-decrypts it, and writes bytes; no execution found.
No eval, Function, vm, dynamic import, curl/wget, or shell payload pattern found.
Network endpoints are package-aligned with documented WeChat/relay bridge behavior.
README discloses local daemon, WeChat control plane, Codex/Claude bridge, and service commands.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedUrlStrings

Manifest

NoLicenseWildcardDependency

scanned 2 file(s), 424 KB of source, external domains: 127.0.0.1, ilinkai.weixin.qq.com, novac2c.cdn.weixin.qq.com, react.dev, www.apple.com, www.w3.org

Source & flagged code

6 flagged

dist/server/cli.jsView file

Lines 1-41javascript

1#!/usr/bin/env node

2import { createRequire as __cjsCreateRequire } from 'node:module'; const require = __cjsCreateRequire(import.meta.url);

4// src/cli.ts

5import { existsSync as existsSync10, readFileSync as readFileSync8 } from "node:fs";

6import { dirname as dirname12, join as join12 } from "node:path";

7import { fileURLToPath } from "node:url";

9// src/daemon/bootstrap.ts

10import { networkInterfaces } from "node:os";

12// src/daemon/server.ts

13import { mkdtempSync } from "node:fs";

14import { tmpdir as tmpdir2 } from "node:os";

15import { dirname as dirname10, join as join9 } from "node:path";

16import Fastify from "fastify";

18// src/channels/platforms.ts

19var PRIMARY_WEIXIN_PLATFORM = "weixin";

21// src/channels/weixin-direct/loginClient.ts

22var DEFAULT_BASE_URL = "https://ilinkai.weixin.qq.com";

23var WeixinDirectLoginClient = class {

Critical

Remote Asset Decode Execute

Source fetches a remote non-code asset, decodes its contents, and dynamically executes the decoded payload.

dist/server/cli.jsView on unpkg · L21

High

Spawned Bundled Service Listener

Source launches a detached bundled service that exposes a broad-bound HTTP listener.

dist/server/cli.jsView on unpkg · L21

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/server/cli.jsView on unpkg · L21

24 baseUrl;

25 fetchImpl;

26 pollIntervalMs;

27 constructor(input = {}) {

28 this.baseUrl = (input.baseUrl ?? DEFAULT_BASE_URL).replace(/\/+$/, "");

29 this.fetchImpl = input.fetchImpl ?? fetch;

30 this.pollIntervalMs = input.pollIntervalMs ?? 2e3;

31 }

32 async fetchQrCode() {

33 const data = await this.getJson("ilink/bot/get_bot_qrcode?bot_type=3");

34 const ticket = data.qrcode?.trim();

35 const qrcodeData = data.qrcode_img_content?.trim();

36 if (!ticket || !qrcodeData) throw new Error("weixin_qrcode_missing_fields");

37 return { ticket, qrcodeData };

38 }

39 async pollQrCodeStatus(ticket) {

40 const data = await this.getJson(`ilink/bot/get_qrcode_status?qrcode=${encodeURIComponent(ticket)}`);

41 const status = data.status?.trim().toLowerCase() ?? "wait";

Lines 2301-2341javascript

2301 while (store.hasPendingOutbound(chatId)) {

2302 const quota = store.getQuota(chatId);

2303 if (quota.expired || quota.remaining <= 0) break;

2304 const pending = store.peekOutbound(chatId);

2305 const

•Trigger-reachable chain: manifest.bin -> dist/server/cli.js Reachable file contains a blocking source-risk pattern.

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/server/cli.jsView on unpkg

dist/web/assets/bootstrap-icons-mSm7cUeB.woff2View file

•path = dist/web/assets/bootstrap-icons-mSm7cUeB.woff2 kind = high_entropy_blob sizeBytes = 134044 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

dist/web/assets/bootstrap-icons-mSm7cUeB.woff2View on unpkg

Source & flagged code

6 flagged · loading source

dist/server/cli.jsView file

21// src/channels/weixin-direct/loginClient.ts L22: var DEFAULT_BASE_URL = "https://ilinkai.weixin.qq.com"; L23: var WeixinDirectLoginClient = class { ... L60: if (!response.ok) throw new Error(`weixin_login_request_failed:${response.status}`); L61: const payload = await response.json(); L62: return payload.data ?? payload; ... L70: function defaultConfigPath() { L71: return join(homedir(), ".claude-codex-wechat", "config.json"); L72: } L73: function loadBridgeConfig(path = process.env.BRIDGE_CONFIG ?? defaultConfigPath()) { L74: if (!existsSync(path)) return normalizeBridgeConfig({}, process.env, path); ... L1077: }));

Critical

Remote Asset Decode Execute

Source fetches a remote non-code asset, decodes its contents, and dynamically executes the decoded payload.

dist/server/cli.jsView on unpkg · L21

•Trigger-reachable chain: manifest.bin -> dist/server/cli.js Reachable file contains a blocking source-risk pattern.

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/server/cli.jsView on unpkg

2321// src/providers/claude-code/claudeStreamingRunner.ts L2322: import { spawn as spawn2 } from "node:child_process"; L2323: import { randomUUID as randomUUID2 } from "node:crypto";

High

Child Process

Package source references child process execution.

dist/server/cli.jsView on unpkg · L2321

21Detached bundled service listener: dist/server/cli.js launches a Node helper and exposes a broad-bound HTTP listener. L21: // src/channels/weixin-direct/loginClient.ts L22: var DEFAULT_BASE_URL = "https://ilinkai.weixin.qq.com"; L23: var WeixinDirectLoginClient = class { ... L60: if (!response.ok) throw new Error(`weixin_login_request_failed:${response.status}`); L61: const payload = await response.json(); L62: return payload.data ?? payload; ... L70: function defaultConfigPath() { L71: return join(homedir(), ".claude-codex-wechat", "config.json"); L72: } L73: function loadBridgeConfig(path = process.env.BRIDGE_CONFIG ?? defaultConfigPath()) { L74: if (!existsSync(path)) return normalizeBridgeConfig({}, process.env, path); ... L1077: }));

High

Spawned Bundled Service Listener

Source launches a detached bundled service that exposes a broad-bound HTTP listener.

dist/server/cli.jsView on unpkg · L21

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/server/cli.jsView on unpkg · L21

dist/web/assets/bootstrap-icons-mSm7cUeB.woff2View file

•path = dist/web/assets/bootstrap-icons-mSm7cUeB.woff2 kind = high_entropy_blob sizeBytes = 134044 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

dist/web/assets/bootstrap-icons-mSm7cUeB.woff2View on unpkg

Findings

2 Critical4 High5 Medium6 Low

CriticalRemote Asset Decode Executedist/server/cli.js

CriticalTrigger Reachable Dangerous Capabilitydist/server/cli.js

HighChild Processdist/server/cli.js

HighShell

HighSpawned Bundled Service Listenerdist/server/cli.js

HighShips High Entropy Blobdist/web/assets/bootstrap-icons-mSm7cUeB.woff2

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistencedist/server/cli.js

MediumStructural Risk Force Deep Review

MediumWildcard Dependency

LowNon Install Lifecycle Scripts

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

LowNo License

Source & flagged code

6 flagged

dist/server/cli.jsView file

Lines 1-41javascript

1#!/usr/bin/env node

2import { createRequire as __cjsCreateRequire } from 'node:module'; const require = __cjsCreateRequire(import.meta.url);

4// src/cli.ts

5import { existsSync as existsSync10, readFileSync as readFileSync8 } from "node:fs";

6import { dirname as dirname12, join as join12 } from "node:path";

7import { fileURLToPath } from "node:url";

9// src/daemon/bootstrap.ts

10import { networkInterfaces } from "node:os";

12// src/daemon/server.ts

13import { mkdtempSync } from "node:fs";

14import { tmpdir as tmpdir2 } from "node:os";

15import { dirname as dirname10, join as join9 } from "node:path";

16import Fastify from "fastify";

18// src/channels/platforms.ts

19var PRIMARY_WEIXIN_PLATFORM = "weixin";

21// src/channels/weixin-direct/loginClient.ts

22var DEFAULT_BASE_URL = "https://ilinkai.weixin.qq.com";

23var WeixinDirectLoginClient = class {

Critical

Remote Asset Decode Execute

Source fetches a remote non-code asset, decodes its contents, and dynamically executes the decoded payload.

dist/server/cli.jsView on unpkg · L21

High

Spawned Bundled Service Listener

Source launches a detached bundled service that exposes a broad-bound HTTP listener.

dist/server/cli.jsView on unpkg · L21

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/server/cli.jsView on unpkg · L21

24 baseUrl;

25 fetchImpl;

26 pollIntervalMs;

27 constructor(input = {}) {

28 this.baseUrl = (input.baseUrl ?? DEFAULT_BASE_URL).replace(/\/+$/, "");

29 this.fetchImpl = input.fetchImpl ?? fetch;

30 this.pollIntervalMs = input.pollIntervalMs ?? 2e3;

31 }

32 async fetchQrCode() {

33 const data = await this.getJson("ilink/bot/get_bot_qrcode?bot_type=3");

34 const ticket = data.qrcode?.trim();

35 const qrcodeData = data.qrcode_img_content?.trim();

36 if (!ticket || !qrcodeData) throw new Error("weixin_qrcode_missing_fields");

37 return { ticket, qrcodeData };

38 }

39 async pollQrCodeStatus(ticket) {

40 const data = await this.getJson(`ilink/bot/get_qrcode_status?qrcode=${encodeURIComponent(ticket)}`);

41 const status = data.status?.trim().toLowerCase() ?? "wait";

Lines 2301-2341javascript

2301 while (store.hasPendingOutbound(chatId)) {

2302 const quota = store.getQuota(chatId);

2303 if (quota.expired || quota.remaining <= 0) break;

2304 const pending = store.peekOutbound(chatId);

2305 const

•Trigger-reachable chain: manifest.bin -> dist/server/cli.js Reachable file contains a blocking source-risk pattern.

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/server/cli.jsView on unpkg

dist/web/assets/bootstrap-icons-mSm7cUeB.woff2View file

•path = dist/web/assets/bootstrap-icons-mSm7cUeB.woff2 kind = high_entropy_blob sizeBytes = 134044 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

dist/web/assets/bootstrap-icons-mSm7cUeB.woff2View on unpkg