xscan 1.5

.gitignore

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+xscan

legal.txt

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+RESPONSIBLE USE POLICY
+
+By downloading and using any code or software provided herein, you agree to the following terms and conditions:
+
+    License Agreement: 
+        You acknowledge that the downloaded code is subject to the terms
+        of the applicable license agreement accompanying the code. Ensure
+        compliance with all terms and conditions outlined in the license
+        agreement.
+
+    Authorized Use:
+        You agree to use the downloaded code solely for lawful purposes and
+        in accordance with its intended use as described in the accompanying
+        documentation or license agreement.
+
+    Responsibility for Modifications:
+        Any modifications made to the downloaded code are done at your own
+        risk. You are responsible for ensuring that any modifications comply
+        with applicable laws and regulations and do not infringe upon the
+        rights of any third party.
+
+    No Warranty:
+        The downloaded code is provided "as is" without any warranty, express
+        or implied. The authors or contributors of the code shall not be liable 
+        for any damages arising from the use or inability to use the code.
+
+    Attribution: When applicable, you agree to provide appropriate attribution
+        to the authors or contributors of the downloaded code as specified in the
+        accompanying documentation or license agreement.
+
+    Compliance with Laws:
+        You agree to comply with all applicable laws, regulations, and policies
+        governing the use of the downloaded code, including but not limited to
+        intellectual property laws and export control regulations.
+
+    Indemnification: 
+        You agree to indemnify and hold harmless the authors or contributors of
+        the downloaded code from any claims, damages, liabilities, or expenses
+        arising from your use or misuse of the code.
+
+    Termination:
+        These terms and conditions are effective until terminated. The authors
+        or contributors of the code reserve the right to terminate this agreement
+        at any time if you fail to comply with its terms.
+
+By downloading and using the code, you acknowledge that you have read, understood, and agree to be bound by these
+terms and conditions. If you do not agree with these terms, you are not authorized to download or use the code.

readme.txt

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+
+ ##  ##    #####    ####     ####    #####
+  ####    ##       ##  ##       ##   ##  ##
+   ##      #####   ##        #####   ##  ##
+  ####         ##  ##  ##   ##  ##   ##  ##
+ ##  ##   ######    ####     #####   ##  ##
+
+______________________________________________________________________
+                                ABOUT
+______________________________________________________________________
+Description: TCP port scanner
+Program: xscan
+Current version: 1.5
+Languages: go 1.23.5
+Tested on: Kali linux 2024.4 on Kernel Linux 6.11.2
+Author: scarlet-oni
+Dependencies: -
+
+______________________________________________________________________
+                              DOCUMENTATION
+______________________________________________________________________
+Xscan is a tcp port scanner written in golang. 
+Allows you to scan specific ports or all.
+
+compilation:
+    go build ...
+    make (necessary makefile)
+
+Run a scan on a specific port:
+    ./xscan <ip/address> <port>
+
+Start scanning with all ports:
+    ./xscan <ip/address>
+
+______________________________________________________________________
+                            LEGAL STATEMENT
+______________________________________________________________________
+By downloading, modifying, redistributing, and/or executing xscan, the
+user agrees to the contained legal.txt statement found in this repository.
+
+I, scarlet-oni, the creator, take no legal responsibility for unlawful actions
+caused/stemming from this program. 
+
+Use responsibly and ethically!

src/Makefile

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+.DEFAULT_GOAL := build
+
+fmt:
+	go fmt xscan.go
+.PHONY:fmt
+
+lint: fmt
+	golint xscan.go
+.PHONY:lint
+
+vet: fmt
+	go vet xscan.go
+.PHONY:vet
+
+build: vet
+	go build xscan.go
+.PHONY:build

src/go.mod

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+module xscan
+
+go 1.23.5

src/xscan.go

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+package main
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"os"
+	"sort"
+	"strconv"
+	"sync"
+	"time"
+)
+
+func scanner(address string, ports, results chan int, wg *sync.WaitGroup) {
+	defer wg.Done()
+	for p := range ports {
+		address := fmt.Sprintf("%s:%d", address, p)
+		conn, err := net.Dial("tcp", address)
+		if err != nil {
+			results <- -1
+			continue
+		}
+		conn.Close()
+		results <- p
+	}
+}
+
+func master(address, port string) {
+	if port != "" {
+		int_port, err := strconv.Atoi(port)
+		if err != nil {
+			log.Fatal("[E] ", err)
+		}
+		address = fmt.Sprintf("%s:%d", address, int_port)
+		conn, err := net.Dial("tcp", address)
+		if err == nil {
+			fmt.Printf("port %d is open\n", int_port)
+		} else {
+			fmt.Printf("Port %d is closed\n", int_port)
+			log.Fatal("[E] ", err)
+		}
+		conn.Close()
+	} else {
+		ports := make(chan int, 100)
+		results := make(chan int)
+		var openports []int
+		var wg sync.WaitGroup
+
+		for i := 0; i < cap(ports); i++ {
+			wg.Add(1)
+			go scanner(address, ports, results, &wg)
+		}
+
+		go func() {
+			for i := 1; i <= 1024; i++ {
+				ports <- i
+			}
+			close(ports)
+		}()
+
+		go func() {
+			wg.Wait()
+			close(results)
+		}()
+
+		for port := range results {
+			if port != -1 {
+				openports = append(openports, port)
+			}
+		}
+
+		sort.Ints(openports)
+
+		for _, port := range openports {
+			fmt.Printf("[%d] open\n", port)
+		}
+
+		time.Sleep(1 * time.Second)
+	}
+}
+
+func main() {
+	if len(os.Args) == 2 {
+		addr := os.Args[1]
+		master(addr, "")
+	} else if len(os.Args) == 3 {
+		addr := os.Args[1]
+		port_addr := os.Args[2]
+		master(addr, port_addr)
+	}
+}