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|
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <time.h>
typedef struct ipHeader
{
unsigned char ip_header_length:4;
unsigned char version:4;
unsigned char type_of_service;
unsigned short int total_length;
unsigned short int id;
unsigned short int fragment_offset;
unsigned char ttl;
unsigned char protocol;
unsigned short int checksum;
unsigned int source_addr;
unsigned int destination_addr;
}ipHeader;
typedef struct tcpHeader
{
unsigned short int source_port;
unsigned short int destination_port;
unsigned int seq_num;
unsigned int ack_num;
unsigned char reserved1:4;
unsigned char data_offset:4;
unsigned short fin:1;
unsigned short syn:1;
unsigned short reset:1;
unsigned short push:1;
unsigned short ack:1;
unsigned short urgent:1;
unsigned short reserverd2:2;
unsigned short int windows;
unsigned short int checksum;
unsigned short int urgent_ptr;
}tcpHeader;
unsigned short csum( unsigned short *buf , int len )
{
unsigned long sum;
for( sum = 0 ; len > 0 ; len-- )
sum += *buf++;
sum = ( sum >> 16 ) + ( sum &0xffff );
sum += ( sum >> 16 );
return ( unsigned short )( ~sum );
}
static void purger( void )
{
int c;
while( ( c = getchar() ) != '\n' && c != EOF )
{
}
}
static void clean( char *string )
{
char *p = strchr( string , '\n' );
if( p )
{
*p = 0;
}
else
{
purger();
}
}
int main()
{
WSADATA wsaData;
SOCKET sock;
struct sockaddr_in target;
int res;
int one = 1;
const int *val = &one;
char src_ip[14];
char dst_ip[14];
char buff[1024];
ipHeader *ipH = ( struct ipHeader *) buff;
tcpHeader *tcpH = ( struct tcpHeader *)( buff + sizeof( ipHeader ) );
srand( time( NULL ) );
printf("[?]Source IP: ");
fgets( src_ip , sizeof( src_ip ) , stdin );
clean( src_ip );
printf("\n[?]Target IP: ");
fgets( dst_ip , sizeof( dst_ip ) , stdin );
clean( dst_ip );
target.sin_family = AF_INET;
target.sin_port = htons( 80 );
target.sin_addr.s_addr = inet_addr( dst_ip );
res = WSAStartup( MAKEWORD( 2 , 0 ) , &wsaData);
if( res != 0 )
{
printf("\n[-]Error Winsock version : %d\n" , WSAGetLastError() );
system("PAUSE");
return 0;
}
sock = socket( AF_INET , SOCK_RAW , IPPROTO_RAW );
if( sock < 0 )
{
printf("\n[-]Error socket function : %d\n" , WSAGetLastError() );
system("PAUSE");
return 0;
}
else if( sock == INVALID_SOCKET )
{
printf("\n[-]Error socket function : %d\n" , WSAGetLastError() );
system("PAUSE");
return 0;
}
memset( buff , 0 , 1024 );
ipH->version = 4;
ipH->ip_header_length = 16;
ipH->type_of_service = 0;
ipH->total_length = htons( sizeof( struct ipHeader ) + sizeof( struct tcpHeader ) );
ipH->id = 2;
ipH->fragment_offset = 0;
ipH->ttl = 128;
ipH->protocol = 0x06;
ipH->checksum = 0;
ipH->source_addr = inet_addr( src_ip );
ipH->destination_addr = inet_addr( dst_ip );
tcpH->source_port = htons( 80 );
tcpH->destination_port = htons( 80 );
tcpH->seq_num = rand();
tcpH->data_offset = 0;
tcpH->ack_num = 0;
tcpH->reserved1 = 0;
tcpH->fin = 0;
tcpH->syn = 1;
tcpH->reset = 0;
tcpH->push = 0;
tcpH->ack = 0;
tcpH->urgent = 0;
tcpH->reserverd2 = 0;
tcpH->windows = htonl (65535);
tcpH->checksum = 0;
tcpH->urgent_ptr = 0;
ipH->checksum = csum( ( unsigned short * ) buff , ipH->total_length >> 1 );
res = setsockopt( sock , IPPROTO_IP , IP_HDRINCL , val , sizeof( one ) );
if( res == SOCKET_ERROR )
{
closesocket( sock );
printf("\n[-]Error setsockop function");
}
if( sendto( sock , buff , ipH->total_length , 0 , ( struct sockaddr *) &target , sizeof( target ) ) < 0 )
{
printf("\n[-]Error socket function : %d\n" , WSAGetLastError() );
system("PAUSE");
return 0;
}
else
{
printf("\n[+]Packet send");
}
printf("\n");
system("PAUSE");
return 0;
} |
