Loading npm security reports…

twintest@1.0.1: AI-agent control-surface risk | LPM Firewall

registry / twintest / 1.0.1

twintest@1.0.1

Windows desktop application test automation framework — Appium 2.x + appium-windows-driver + WebDriverIO + Cucumber-js.

AI Security Review

scanned 2h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package silently modifies the user's and consuming project's Claude Code configuration. It copies behavior-bearing skills and hooks, then registers the hooks to run before Bash tool use.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

npm install runs the package postinstall lifecycle script.

Impact

A dependency installation persists package-controlled behavior in a broad AI-agent control surface without user consent.

Mechanism

install-time Claude Code skill, hook, and settings mutation

Policy narrative

On npm installation, the postinstall script copies this package's skills into Claude directories, copies executable hook scripts into the user's Claude hook directory, and adds command-hook entries to the user's Claude settings. Those entries activate on PreToolUse for Bash, making package code part of future agent command handling without an explicit setup action by the user.

Rationale

This package performs unconsented postinstall mutation of a foreign, user-wide Claude Code control surface. That concrete persistence and hook registration meets the blocking policy even though no exfiltration endpoint was found.

Evidence

package.jsonscripts/postinstall.cjshooks/winappdriver-session-guard.shhooks/commit-message-gate.sh~/.claude/skills<project>/.claude/skills~/.claude/hooks~/.claude/settings.json

Source & flagged code

12 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.cjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

bin/self-repair.mjsView file

11L12: import { spawn, execSync } from 'node:child_process'; L13: import {

High

Child Process

Package source references child process execution.

bin/self-repair.mjsView on unpkg · L11

•matchType = normalized_sha256 matchedPackage = twintest@0.1.1 matchedPath = bin/self-repair.mjs matchedIdentity = npm:dHdpbnRlc3Q:0.1.1 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/self-repair.mjsView on unpkg

dist/config.jsView file

15*/ L16: import net from 'net'; L17: import path from 'path'; L18: import { execSync } from 'child_process'; L19: const APP_PATH = process.env.APP_PATH || 'Root'; L20: const APP_TOP_LEVEL_WINDOW = process.env.APP_TOP_LEVEL_WINDOW;

Critical

Reverse Shell

Source matches reverse-shell style process and socket wiring.

dist/config.jsView on unpkg · L15

15Trigger-reachable chain: manifest.exports -> dist/config.js L15: */ L16: import net from 'net'; L17: import path from 'path'; L18: import { execSync } from 'child_process'; L19: const APP_PATH = process.env.APP_PATH || 'Root'; L20: const APP_TOP_LEVEL_WINDOW = process.env.APP_TOP_LEVEL_WINDOW;

Critical

Trigger Reachable Dangerous Capability

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

dist/config.jsView on unpkg · L15

26try { L27: // Use PowerShell to test TCP connection (Windows-compatible, synchronous) L28: execSync(`powershell -NoProfile -Command "try { $c = [System.Net.Sockets.TcpClient]::new(); $c.Connect('127.0.0.1', ${port}); $c.Close(); exit 0 } catch { exit 1 }"`, { stdio: 'ign...

High

Shell

Package source references shell execution.

dist/config.jsView on unpkg · L26

15*/ L16: import net from 'net'; L17: import path from 'path'; L18: import { execSync } from 'child_process'; L19: const APP_PATH = process.env.APP_PATH || 'Root'; L20: const APP_TOP_LEVEL_WINDOW = process.env.APP_TOP_LEVEL_WINDOW;

dist/wdio.conf.jsView file

24const resolve = (...segments) => path.resolve(cwd, ...segments); L25: const require = createRequire(import.meta.url); L26: export const config = {

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/wdio.conf.jsView on unpkg · L24

scripts/postinstall.cjsView file

6* Adapted from the achilles postinstall pattern: L7: * - Copies skills to ~/.claude/skills/ and <project>/.claude/skills/ L8: * - Copies hooks to ~/.claude/hooks/ and registers them in settings.json L9: * - Idempotent: safe to run multiple times ... L23: if (require.main === module && !packageDir.includes('node_modules')) { L24: // For local dev, still install skills to project-level .claude/skills/ L25: installLocalSkills(); ... L31: const destinations = [ L32: path.join(projectRoot, '.claude', 'skills'), L33: path.join(homeDir, '.claude', 'skills'), L34: ]; ... L44: function copyDirRecursive(src, dest) {

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/postinstall.cjsView on unpkg · L6

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. #!/usr/bin/env node const fs = require('fs'); const path = require('path'); const os = require('os'); const packagedir = path.resolve(__dirname, '..'); const skillsdir = path.join(packagedir, 'skills'); const projectroot = path.resolve(__dirname, '..', '..', '..', '..');

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

scripts/postinstall.cjsView on unpkg

hooks/winappdriver-session-guard.shView file

•path = hooks/winappdriver-session-guard.sh kind = build_helper sizeBytes = 1758 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

hooks/winappdriver-session-guard.shView on unpkg

Source & flagged code

12 flagged

package.jsonView file

Lines 34-74json

34 "./wdio.conf": {

35 "types": "./dist/wdio.conf.d.ts",

36 "import": "./dist/wdio.conf.js",

37 "default": "./dist/wdio.conf.js"

38 }

39 },

40 "typesVersions": {

41 "*": {

42 "config": ["dist/config.d.ts"],

43 "hooks": ["dist/hooks.d.ts"],

44 "steps/common": ["dist/steps/common.steps.d.ts"],

45 "steps/database": ["dist/steps/database.steps.d.ts"]

46 }

47 },

48 "scripts": {

49 "test": "wdio run wdio.conf.ts",

50 "test:repair": "node bin/self-repair.mjs",

51 "appium:setup": "ts-node scripts/setup-appium.ts",

52 "appium:start": "appium --address 127.0.0.1 --port 4723 --allow-cors",

53 "appium:doctor": "appium driver doctor windows",

54 "postinstall": "node scripts/postinstall.cjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L54

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L54

55 "build": "tsc -p tsconfig.build.json",

56 "prepublishOnly": "npm run build"

57 },

58 "bin": {

59 "twintest-self-repair": "bin/self-repair.mjs"

60 },

61 "files": [

62 "dist",

63 "bin",

64 "hooks",

65 "skills",

66 "schemas",

67 "scripts/postinstall.cjs",

68 "README.md"

69 ],

70 "dependencies": {

71 "@types/node": "^20.0.0",

72 "@wdio/appium-service": "^9.0.0",

73 "@wdio/cli": "^9.0.0",

74 "@wdio/cucumber-framework": "^9.0.0",

bin/self-repair.mjsView file

Lines 1-31javascript

1#!/usr/bin/env node

2// self-repair.mjs — external driver for autonomous desktop suite repair.

3//

4// Adapted from achilles self-repair: baselines the suite, classifies failures,

5// spawns one repair worker per red feature file, verifies heals, and writes

6// an audit-grade report.

7//

8// Consumers reach this through `npm run test:repair`.

9//

10// Exit codes: 0 = every test green or explained, 2 = unresolved, 1 = driver error.

11

dist/config.jsView file

Lines 1-46javascript

1/**

2 * twintest base WDIO configuration.

3 *

4 * Consumers extend this in their own `wdio.conf.ts`:

5 *

6 * import { baseConfig } from 'twintest/config';

7 * export const config = {

8 * ...baseConfig,

9 * specs: ['./tests/**\/*.feature'],

10 * cucumberOpts: {

11 * ...baseConfig.cucumberOpts,

dist/wdio.conf.jsView file

Lines 4-44javascript

4 * Consumers run tests without creating their own wdio.conf.ts:

5 *

6 * npx wdio run node_modules/twintest/dist/wdio.conf.js

7 *

8 * Or add a script to package.json:

9 *

scripts/postinstall.cjsView file

Lines 1-26javascript

1#!/usr/bin/env node

2

3/**

4 * postinstall.js — auto-install twintest skills and hooks.

5 *

6 * Adapted from the achilles postinstall pattern:

7 * - Copies skills to ~/.claude/skills/ and <project>/.claude/skills/

8 * - Copies hooks to ~/.claude/hooks/ and registers them in settings.json

9 * - Idempotent: safe to run multiple times

10 */

11

12

hooks/winappdriver-session-guard.shView file

•path = hooks/winappdriver-session-guard.sh kind = build_helper sizeBytes = 1758 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

hooks/winappdriver-session-guard.shView on unpkg