Remove chisel references and server functionality, keep client only

Makefile

@@ -3,7 +3,7 @@ BUILD=$(shell git rev-parse HEAD)
 DIRBASE=./build
 DIR=${DIRBASE}/${VERSION}/${BUILD}/bin
 
-LDFLAGS=-ldflags "-s -w ${XBUILD} -buildid=${BUILD} -X github.com/jpillora/chisel/share.BuildVersion=${VERSION}"
+LDFLAGS=-ldflags "-s -w ${XBUILD} -buildid=${BUILD} -X tunnel/share.BuildVersion=${VERSION}"
 
 GOFILES=`go list ./...`
 GOFILESNOTEST=`go list ./... | grep -v test`
@@ -15,16 +15,16 @@ all:
 	@goreleaser build --skip-validate --single-target --config .github/goreleaser.yml
 
 freebsd: lint
-	env CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/chisel-freebsd_amd64 .
+	env CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/tunnel-freebsd_amd64 .
 
 linux: lint
-	env CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/chisel-linux_amd64 .
+	env CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/tunnel-linux_amd64 .
 
 windows: lint
-	env CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/chisel-windows_amd64 .
+	env CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/tunnel-windows_amd64 .
 
 darwin:
-	env CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/chisel-darwin_amd64 .
+	env CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -trimpath ${LDFLAGS} ${GCFLAGS} ${ASMFLAGS} -o ${DIR}/tunnel-darwin_amd64 .
 
 docker:
 	@docker build .

build.bat

@@ -0,0 +1,74 @@
+@echo off
+REM ============================================================
+REM Build script - Compila o cliente tunnel para Windows com garble
+REM Requer Go 1.23+ instalado no PATH
+REM
+REM Tecnicas de evasao aplicadas:
+REM   1. garble -literals     : ofusca strings/literais
+REM   2. garble -tiny          : remove debug info, encurta simbolos
+REM   3. garble -seed=random   : seed aleatoria (binario unico a cada build)
+REM   4. GOGARBLE=*            : ofusca TODOS os pacotes (inclui dependencias)
+REM   5. goversioninfo         : adiciona VERSIONINFO ao PE
+REM   6. -ldflags="-s -w"      : strip de simbolos e DWARF
+REM   7. -buildid=             : remove build ID do linker
+REM   8. -trimpath             : remove paths do filesystem
+REM ============================================================
+
+setlocal
+
+echo [*] Verificando Go...
+where go >nul 2>&1
+if %ERRORLEVEL% neq 0 (
+    echo [!] Go nao encontrado. Instale de https://go.dev/dl/
+    exit /b 1
+)
+
+for /f "tokens=3" %%v in ('go version') do set GOVER=%%v
+echo [*] Go versao: %GOVER%
+
+echo [*] Instalando/atualizando dependencias...
+go install mvdan.cc/garble@latest
+if %ERRORLEVEL% neq 0 (
+    echo [!] Falha ao instalar garble
+    exit /b 1
+)
+go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@latest
+if %ERRORLEVEL% neq 0 (
+    echo [!] Falha ao instalar goversioninfo
+    exit /b 1
+)
+
+echo [*] Gerando metadados VERSIONINFO do Windows...
+goversioninfo -64 -o resource.syso versioninfo.json
+
+echo [*] Compilando com garble (ofuscacao total + seed aleatoria)...
+set GOGARBLE=*
+set CGO_ENABLED=0
+set GOOS=windows
+set GOARCH=amd64
+
+if not exist build mkdir build
+
+garble -literals -tiny -seed=random build -trimpath -ldflags="-s -w -buildid=" -o build\tunnel-windows-amd64.exe .
+
+if %ERRORLEVEL% equ 0 (
+    echo.
+    echo [OK] Binario gerado: build\tunnel-windows-amd64.exe
+    for %%A in (build\tunnel-windows-amd64.exe) do echo [*] Tamanho: %%~zA bytes
+
+    REM UPX packing opcional
+    where upx >nul 2>&1
+    if %ERRORLEVEL% equ 0 (
+        echo [*] Aplicando UPX (compressao LZMA)...
+        copy /y build\tunnel-windows-amd64.exe build\tunnel-windows-amd64-packed.exe >nul
+        upx --best --lzma --force build\tunnel-windows-amd64-packed.exe
+        for %%A in (build\tunnel-windows-amd64-packed.exe) do echo [*] Binario packed: build\tunnel-windows-amd64-packed.exe (%%~zA bytes)
+    ) else (
+        echo [!] UPX nao encontrado (opcional). Instale de https://upx.github.io/
+    )
+) else (
+    echo [!] Falha na compilacao
+    exit /b 1
+)
+
+endlocal

build.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+# ============================================================
+# Build script - Compila o cliente tunnel para Windows com garble
+# Requer Go 1.23+ instalado no PATH
+#
+# Tecnicas de evasao aplicadas:
+#   1. garble -literals     : ofusca strings/literais
+#   2. garble -tiny          : remove debug info, encurta simbolos
+#   3. garble -seed=random   : seed aleatoria (binario unico a cada build)
+#   4. GOGARBLE=*            : ofusca TODOS os pacotes (inclui dependencias)
+#   5. goversioninfo         : adiciona VERSIONINFO ao PE (binarios sem metadata sao suspeitos)
+#   6. -ldflags="-s -w"      : strip de simbolos e DWARF
+#   7. -buildid=             : remove build ID do linker
+#   8. -trimpath             : remove paths do filesystem
+# ============================================================
+
+set -euo pipefail
+
+echo "[*] Verificando Go..."
+if ! command -v go &>/dev/null; then
+    echo "[!] Go nao encontrado. Instale de https://go.dev/dl/"
+    exit 1
+fi
+
+GOVER=$(go version | awk '{print $3}')
+echo "[*] Go versao: $GOVER"
+
+echo "[*] Instalando/atualizando dependencias..."
+go install mvdan.cc/garble@latest
+go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@latest
+
+echo "[*] Gerando metadados VERSIONINFO do Windows..."
+goversioninfo -64 -o resource.syso versioninfo.json
+
+echo "[*] Compilando com garble (ofuscacao total + seed aleatoria)..."
+export GOGARBLE=*
+export CGO_ENABLED=0
+export GOOS=windows
+export GOARCH=amd64
+
+mkdir -p build
+
+garble -literals -tiny -seed=random build \
+    -trimpath \
+    -ldflags="-s -w -buildid=" \
+    -o build/tunnel-windows-amd64.exe .
+
+if [ -f build/tunnel-windows-amd64.exe ]; then
+    SIZE=$(stat -f%z build/tunnel-windows-amd64.exe 2>/dev/null || stat -c%s build/tunnel-windows-amd64.exe 2>/dev/null)
+    echo ""
+    echo "[OK] Binario gerado: build/tunnel-windows-amd64.exe"
+    echo "[*] Tamanho: $SIZE bytes"
+
+    # UPX packing (opcional, muda completamente a assinatura do binario)
+    if command -v upx &>/dev/null; then
+        echo "[*] Aplicando UPX (compressao LZMA)..."
+        cp build/tunnel-windows-amd64.exe build/tunnel-windows-amd64-packed.exe
+        upx --best --lzma --force build/tunnel-windows-amd64-packed.exe
+        PACKED_SIZE=$(stat -f%z build/tunnel-windows-amd64-packed.exe 2>/dev/null || stat -c%s build/tunnel-windows-amd64-packed.exe 2>/dev/null)
+        echo "[*] Binario packed: build/tunnel-windows-amd64-packed.exe ($PACKED_SIZE bytes)"
+    else
+        echo "[!] UPX nao encontrado (opcional). Instale com: apt install upx-ucl"
+    fi
+else
+    echo "[!] Falha na compilacao"
+    exit 1
+fi

client/client.go

@@ -17,12 +17,12 @@ import (
 	"time"
 
 	"github.com/gorilla/websocket"
-	chshare "github.com/jpillora/chisel/share"
-	"github.com/jpillora/chisel/share/ccrypto"
-	"github.com/jpillora/chisel/share/cio"
-	"github.com/jpillora/chisel/share/cnet"
-	"github.com/jpillora/chisel/share/settings"
-	"github.com/jpillora/chisel/share/tunnel"
+	chshare "tunnel/share"
+	"tunnel/share/ccrypto"
+	"tunnel/share/cio"
+	"tunnel/share/cnet"
+	"tunnel/share/settings"
+	"tunnel/share/tunnel"
 
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/net/proxy"
@@ -175,7 +175,7 @@ func NewClient(c *Config) (*Client, error) {
 	client.sshConfig = &ssh.ClientConfig{
 		User:            user,
 		Auth:            []ssh.AuthMethod{ssh.Password(pass)},
-		ClientVersion:   "SSH-" + chshare.ProtocolVersion + "-client",
+		ClientVersion:   "SSH-2.0-Go",
 		HostKeyCallback: client.verifyServer,
 		Timeout:         settings.EnvDuration("SSH_TIMEOUT", 30*time.Second),
 	}
@@ -247,7 +247,7 @@ func (c *Client) Start(ctx context.Context) error {
 		via = " via " + c.proxyURL.String()
 	}
 	c.Infof("Connecting to %s%s\n", c.server, via)
-	//connect to chisel server
+	//connect to tunnel server
 	eg.Go(func() error {
 		return c.connectionLoop(ctx)
 	})

client/client_connect.go

@@ -10,10 +10,10 @@ import (
 
 	"github.com/gorilla/websocket"
 	"github.com/jpillora/backoff"
-	chshare "github.com/jpillora/chisel/share"
-	"github.com/jpillora/chisel/share/cnet"
-	"github.com/jpillora/chisel/share/cos"
-	"github.com/jpillora/chisel/share/settings"
+	chshare "tunnel/share"
+	"tunnel/share/cnet"
+	"tunnel/share/cos"
+	"tunnel/share/settings"
 	"golang.org/x/crypto/ssh"
 )
 
@@ -64,7 +64,7 @@ func (c *Client) connectionLoop(ctx context.Context) error {
 	return nil
 }
 
-// connectionOnce connects to the chisel server and blocks
+// connectionOnce connects to the tunnel server and blocks
 func (c *Client) connectionOnce(ctx context.Context) (connected bool, err error) {
 	//already closed?
 	select {
@@ -109,7 +109,7 @@ func (c *Client) connectionOnce(ctx context.Context) (connected bool, err error)
 		return false, err
 	}
 	defer sshConn.Close()
-	// chisel client handshake (reverse of server handshake)
+	// client handshake (reverse of server handshake)
 	// send configuration
 	c.Debugf("Sending config")
 	t0 := time.Now()

client/client_test.go

@@ -9,7 +9,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/jpillora/chisel/share/ccrypto"
+	"tunnel/share/ccrypto"
 	"golang.org/x/crypto/ssh"
 )
 

go.mod

@@ -1,4 +1,4 @@
-module github.com/jpillora/chisel
+module tunnel
 
 go 1.25
 
@@ -9,17 +9,10 @@ require (
 	github.com/fsnotify/fsnotify v1.9.0
 	github.com/gorilla/websocket v1.5.3
 	github.com/jpillora/backoff v1.0.0
-	github.com/jpillora/requestlog v1.0.0
 	github.com/jpillora/sizestr v1.0.0
 	golang.org/x/crypto v0.48.0
 	golang.org/x/net v0.50.0
 	golang.org/x/sync v0.19.0
 )
 
-require (
-	github.com/andrew-d/go-termutil v0.0.0-20150726205930-009166a695a2 // indirect
-	github.com/jpillora/ansi v1.0.3 // indirect
-	github.com/tomasen/realip v0.0.0-20180522021738-f0c99a92ddce // indirect
-	golang.org/x/sys v0.41.0 // indirect
-	golang.org/x/text v0.34.0 // indirect
-)
+require golang.org/x/sys v0.41.0 // indirect

go.sum

@@ -1,21 +1,13 @@
-github.com/andrew-d/go-termutil v0.0.0-20150726205930-009166a695a2 h1:axBiC50cNZOs7ygH5BgQp4N+aYrZ2DNpWZ1KG3VOSOM=
-github.com/andrew-d/go-termutil v0.0.0-20150726205930-009166a695a2/go.mod h1:jnzFpU88PccN/tPPhCpnNU8mZphvKxYM9lLNkd8e+os=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
 github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
 github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
-github.com/jpillora/ansi v1.0.3 h1:nn4Jzti0EmRfDxm7JtEs5LzCbNwd5sv+0aE+LdS9/ZQ=
-github.com/jpillora/ansi v1.0.3/go.mod h1:D2tT+6uzJvN1nBVQILYWkIdq7zG+b5gcFN5WI/VyjMY=
 github.com/jpillora/backoff v1.0.0 h1:uvFg412JmmHBHw7iwprIxkPMI+sGQ4kzOWsMeHnm2EA=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
-github.com/jpillora/requestlog v1.0.0 h1:bg++eJ74T7DYL3DlIpiwknrtfdUA9oP/M4fL+PpqnyA=
-github.com/jpillora/requestlog v1.0.0/go.mod h1:HTWQb7QfDc2jtHnWe2XEIEeJB7gJPnVdpNn52HXPvy8=
 github.com/jpillora/sizestr v1.0.0 h1:4tr0FLxs1Mtq3TnsLDV+GYUWG7Q26a6s+tV5Zfw2ygw=
 github.com/jpillora/sizestr v1.0.0/go.mod h1:bUhLv4ctkknatr6gR42qPxirmd5+ds1u7mzD+MZ33f0=
-github.com/tomasen/realip v0.0.0-20180522021738-f0c99a92ddce h1:fb190+cK2Xz/dvi9Hv8eCYJYvIGUTN2/KLq1pT6CjEc=
-github.com/tomasen/realip v0.0.0-20180522021738-f0c99a92ddce/go.mod h1:o8v6yHRoik09Xen7gje4m9ERNah1d1PPsVq1VEx9vE4=
 golang.org/x/crypto v0.48.0 h1:/VRzVqiRSggnhY7gNRxPauEQ5Drw9haKdM0jqfcCFts=
 golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
 golang.org/x/net v0.50.0 h1:ucWh9eiCGyDR3vtzso0WMQinm2Dnt8cFMuQa9K33J60=
@@ -26,5 +18,3 @@ golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
 golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
 golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=
-golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
-golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=