Simple Port Scanner 업그레이드 시키기

Simple Port Scanner 업그레이드 시키기

2012. 7. 7. 22:03ㆍHacking/Network

포트 스캐닝 기법에는 방식에 따라 여러가지로 나뉘며, 이때마다 매번 코드를 제작해야 하는 귀찮음을 벗어나기 위해

기존 Simple Port Scanner의 소스코드를 조금 수정하도록 한다.

1차 리팩토링!

gcc SimplePortScanner.c -o SimplePortScanner

SimplePortScanner.c

#include <stdio.h>  
#include <unistd.h>  
#include <stdlib.h>  
#include <string.h>  
#include <sys/socket.h>  
#include <sys/stat.h>  
#include <arpa/inet.h>  
#include "printfColor.h"

#define	SUCCESS	1
#define	FAILED	-1

const int start_port	= 1;  
const int end_port	= 65535;

char *host_addr;

int option = -1;	// PORT SCANNING TYPE

void TCPScanning ();
void *try_tcp_port (int port);
void usage (char *programName);
int printOption ();
  
int main (int argc, char *argv[])  
{
	int result;

/* Check args, and print a message if wrong */
	if (argc < 2)
	{
		usage (argv[0]);
		return FAILED;
	}

/* Set host adress */
	host_addr = argv[1];

/* Select option */
	result = printOption ();
	while (result == FAILED)
	{
		option = -1;
		result = printOption ();
	}

switch (option)
	{
	case 0:	TCPScanning ();	break;
	}

return 0;  
}

void TCPScanning ()
{
	int i = 0;

printf(BLUE "\t\tPort\t\tState\t\tService\n\n" RESET);
  
	for (i = start_port; i <= end_port; i++)
	{
		try_tcp_port (i);	 
	}

printf(BLUE "\n\nScan complete!\n\n");
}

void *try_tcp_port (int port)
{
	int sock = 0;
	struct sockaddr_in dest_addr;    // 구조체

if ((sock = socket (PF_INET, SOCK_STREAM, 0)) < 0)  // 소켓 생성  
	{
		printf ("Couldn't make socket!\n");  
		exit(-1);  
	}

/* Setting up the sockaddr_in struct with connection details, port, 'family', hostname/IP address */
	memset (&dest_addr, 0, sizeof(dest_addr));  
	dest_addr.sin_family = AF_INET;
	dest_addr.sin_addr.s_addr = inet_addr(host_addr);
	dest_addr.sin_port = htons(port);

if (connect(sock, (struct sockaddr*) &dest_addr, sizeof (dest_addr)) < 0)   //connect() 성공 여부에 따라 open / close 나뉨  
	{
		printf ("%d : Close\n", port);
	}
	else 
	{
		printf ("%d : Open\n", port);
	}

close ( sock );
}

void usage (char *programName)
{
        printf (RED "Usage: %s <host/ip> [-tsu] [-p] [-b number] [-e number] [-c number] [-v]\n", programName);
        printf (RED "\n\nRootscan was written by shaunige@yahoo.co.uk,\nEckz - mrx@netlane.com - http://freewebs.com/bh_x,\n");
        printf (RED "InvisibleGhost : i_t_rules@hotmail.com,\nand Ozzy.\nBug testers: Threadhead and Odins_Son, p4n_n0s.\n");
        printf (RED "\n\t-u : Scan for UDP Ports\n");
        printf (RED "\tUDP scanning option is currently experimental.\n");
        printf (RED "\t-s : Scan using SYN scanning (stealthy).\n");
        printf (RED "\t-t : Scan using TCP connect() scanning (default).\n");
        printf (RED "\t-p : Scan in parallel mode, using threads (faster in some cases)\n");
        printf (RED "\t-b number: start scanning at port number. (default = 1)\n");
        printf (RED "\t-e number: stop scanning at port number. (default = 65535)\n");
        printf (RED "\t-c number: Set connect() timeout (default = 3, \n\tcurrently only affects tcp connect() scan.)\n");
        printf (RED "\t-v: Be verbose (mostly for debugging or checking speed)\n\n");
}

int printOption ()
{
	printf ("Choose scanning type...\n");
	printf ("[0] : TCP Scanning\n");
	printf ("> ");

scanf ("%d", &option);
	
	if (option < 0 || option > 0)
		return FAILED;
	else
		return SUCCESS;
}

printfColor.h

저작자표시

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