From cf3fe3e468775ec260bf61ad409d814d004ed789 Mon Sep 17 00:00:00 2001
From: Ana Maria Martinez Gomez <ana.martinez@mandiant.com>
Date: Fri, 29 Sep 2023 12:06:36 +0200
Subject: [PATCH] Add pkg-unpacker

Add pkg-unpacker, a nodejs tool installed similarly to malware-jail.
---
 .../pkg-unpacker.vm/pkg-unpacker.vm.nuspec    | 13 +++++++++++++
 .../tools/chocolateyinstall.ps1               | 19 +++++++++++++++++++
 .../tools/chocolateyuninstall.ps1             |  7 +++++++
 3 files changed, 39 insertions(+)
 create mode 100644 packages/pkg-unpacker.vm/pkg-unpacker.vm.nuspec
 create mode 100644 packages/pkg-unpacker.vm/tools/chocolateyinstall.ps1
 create mode 100644 packages/pkg-unpacker.vm/tools/chocolateyuninstall.ps1

diff --git a/packages/pkg-unpacker.vm/pkg-unpacker.vm.nuspec b/packages/pkg-unpacker.vm/pkg-unpacker.vm.nuspec
new file mode 100644
index 000000000..b39ac1d5c
--- /dev/null
+++ b/packages/pkg-unpacker.vm/pkg-unpacker.vm.nuspec
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2015/06/nuspec.xsd">
+  <metadata>
+    <id>pkg-unpacker.vm</id>
+    <version>1.0.0</version>
+    <authors>LockBlock-dev</authors>
+    <description>Unpacker for pkg applications.</description>
+    <dependencies>
+      <dependency id="common.vm" />
+      <dependency id="nodejs" version="[20.7.0]" />
+    </dependencies>
+  </metadata>
+</package>
diff --git a/packages/pkg-unpacker.vm/tools/chocolateyinstall.ps1 b/packages/pkg-unpacker.vm/tools/chocolateyinstall.ps1
new file mode 100644
index 000000000..2cc736110
--- /dev/null
+++ b/packages/pkg-unpacker.vm/tools/chocolateyinstall.ps1
@@ -0,0 +1,19 @@
+$ErrorActionPreference = 'Stop'
+Import-Module vm.common -Force -DisableNameChecking
+
+try {
+    $toolName = 'pkg-unpacker'
+    $category = 'Packers'
+    $zipUrl = 'https://github.com/LockBlock-dev/pkg-unpacker/archive/b1fd5200e1bf656dedef6817c177c8bb2dc38028.zip'
+    $zipSha256 = '6eed1d492d37ca3934a3bc838c2256719a3e78ccf72ce1b1ca07684519ace16c'
+    $powershellCommand = "Write-Output '> node unpack.js'; node unpack.js"
+
+    $toolDir = VM-Install-Raw-GitHub-Repo $toolName $category $zipUrl $zipSha256 -powershellCommand $powershellCommand
+
+    # Get absolute path as npm is not in path until Powershell is restarted
+    $npmPath = Join-Path ${Env:ProgramFiles} "\nodejs\npm.cmd" -Resolve
+    # Install tool dependencies with npm
+    Set-Location $toolDir; & "$npmPath" install | Out-Null
+} catch {
+  VM-Write-Log-Exception $_
+}
diff --git a/packages/pkg-unpacker.vm/tools/chocolateyuninstall.ps1 b/packages/pkg-unpacker.vm/tools/chocolateyuninstall.ps1
new file mode 100644
index 000000000..6bb7b577f
--- /dev/null
+++ b/packages/pkg-unpacker.vm/tools/chocolateyuninstall.ps1
@@ -0,0 +1,7 @@
+$ErrorActionPreference = 'Continue'
+Import-Module vm.common -Force -DisableNameChecking
+
+$toolName = 'pkg-unpacker'
+$category = 'Packers'
+
+VM-Uninstall $toolName $category