Add DLL target for windows loading in Python

.github/workflows/build.yml

@@ -50,3 +50,55 @@ jobs:
           name: dist-folder
           path: |
             dist
+
+  build-release-dll:
+    name: Build release DLL
+    environment: prod
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+          cache: true
+          check-latest: true
+
+       - name: Set up MinGW
+         uses: egor-tensin/setup-mingw@v2
+         with:
+           platform: x64
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v6
+        with:
+          # either 'goreleaser' (default) or 'goreleaser-pro'
+          distribution: goreleaser
+          # 'latest', 'nightly', or a semver
+          version: '~> v2'
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Use config_release.go from action secrets
+        uses: mobiledevops/secret-to-file-action@v1 # TODO native in Makefile, can be unsafe...
+        with:
+          base64-encoded-secret: ${{ secrets.CONFIG_RELEASE_GO_FILE }}
+          filename: "config_release.go"
+
+      - name: Use resources/ssh_private_key from action secrets
+        uses: mobiledevops/secret-to-file-action@v1 # TODO native in Makefile, can be unsafe...
+        with:
+          base64-encoded-secret: ${{ secrets.RESOURCES_SSH_PRIVATE_KEY }}
+          filename: "ssh_private_key"
+          working-directory: "./resources"
+
+      - run: make dll
+
+      - name: Store release artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist-dll
+          path: |
+            dist

.gitignore

@@ -7,3 +7,5 @@ socks5-ssh-proxy.release
 *.base64
 *.exe
 *.zip
+
+dist/

.goreleaser.yaml

@@ -0,0 +1,55 @@
+# This is an example .goreleaser.yml file with some sensible defaults.
+# Make sure to check the documentation at https://goreleaser.com
+
+# The lines below are called `modelines`. See `:help modeline`
+# Feel free to remove those if you don't want/need to use them.
+# yaml-language-server: $schema=https://goreleaser.com/static/schema.json
+# vim: set ts=2 sw=2 tw=0 fo=cnqoj
+
+version: 2
+
+before:
+  hooks:
+    # You may remove this if you don't use go modules.
+    - go mod tidy
+    # you may remove this if you don't need go generate
+    - go generate ./...
+
+builds:
+  - id: "dll"
+    env:
+      - CGO_ENABLED=1
+      - CC=x86_64-w64-mingw32-gcc
+      - CXX=x86_64-w64-mingw32-g++
+    goos:
+      - windows
+    goarch:
+      - amd64
+    ldflags:
+      - -s -w -H=windowsgui
+    buildmode: c-shared
+    tags:
+      - release
+      - dll
+
+archives:
+  - format: tar.gz
+    # this name template makes the OS and Arch compatible with the results of `uname`.
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- title .Os }}_
+      {{- if eq .Arch "amd64" }}x86_64
+      {{- else if eq .Arch "386" }}i386
+      {{- else }}{{ .Arch }}{{ end }}
+      {{- if .Arm }}v{{ .Arm }}{{ end }}
+    # use zip for windows archives
+    format_overrides:
+      - goos: windows
+        format: zip
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"

Makefile

@@ -1,6 +1,5 @@
 SOURCES=Makefile main.go main_release.go main_debug.go config.go config_release.go config_template.go 
 GARBLE_BIN = $(shell go env GOPATH)/bin/garble
-GO_ENV_VARS = CGO_ENABLED=0
 
 all: socks5-ssh-proxy
 
@@ -21,6 +20,9 @@ socks5-ssh-proxy.release: resources $(SOURCES)
 win: socks5-ssh-proxy.exe
 socks5-ssh-proxy.exe: resources $(GARBLE_BIN) $(SOURCES)
 	GOOS=windows GOARCH=amd64 $(GARBLE_BIN) build -ldflags -H=windowsgui -tags release -o $@
+dll: resources
+	rm -Rf dist
+	goreleaser build --snapshot
 win-package: ChromeProxyHelperPlugin.zip
 ChromeProxyHelperPlugin.zip: socks5-ssh-proxy.exe
 	cp socks5-ssh-proxy.exe chrome_proxy.exe

README.md

@@ -1,6 +1,6 @@
 # socks5-ssh-proxy
 
-If HTTP(s) is filtered and outbound SSH is allowed, just create a SOCKS5 proxy. Beat the sensorship, and be free!
+If HTTP(s) is filtered and outbound SSH is allowed, just create a SOCKS5 proxy over SSH using a [Jump server](https://en.wikipedia.org/wiki/Jump_server). Beat the (corporate) sensorship, and be free!
 
 ## Background information
 
@@ -54,8 +54,17 @@ Following detections have been tested:
 * Microsoft Defender: [Trojan](https://en.wikipedia.org/wiki/Trojan_horse_(computing)):Win32/Gracing.I - Severe. Probably fixed because of packing with UPX
 * Palo Alto Networks, Inc. - Cortex [XDR](https://en.wikipedia.org/wiki/Extended_detection_and_response): detected as Suspicious (no fix yet)
 
+## Build time dependencies
+
+## macOS
+
+* go
+* go-releaser
+* mingw-w64 (for building the windows dll)
+
 ## Related information
 
+* <https://www.yourcts.com/2024/01/19/beware-of-new-go-based-malware/>
 * <https://posts.specterops.io/offensive-security-guide-to-ssh-tunnels-and-proxies-b525cbd4d4c6>
 * <https://emulator41.medium.com/golang-malware-used-by-cybercriminals-408276a276c8>
 

main_dll.go

@@ -0,0 +1,13 @@
+//go:build dll
+// +build dll
+
+package main
+
+import (
+	"C"
+)
+
+//export executeMain
+func executeMain() {
+	main()
+}