From: pentestr (pentestr@gmail.com)
Date: Thu Jan 10 2008 - 05:10:05 EST
Hi,
I got the following brute forcing program. This is excellent
This will give all possible passwords.. Go through the code
/* Brute Force Engine , by koby ( koby@in.gr )
*
* http://www.codecraft.tk
* Finds every possible combination of ASCII
* characters, which are between 33 - 126. The
* characters between 33-126 are all of the
* possible chars allowed on our keyboard
* including special chars.
* If you want to print those strings on screen,
* remove the // on line 81 and notice the
* difference with the time elapsed ...
* Copyright (c) 2003
* koby and www.CodeCraft.tk. All rigths reserved
* Redistributions of source code must retain the above copyright
* notice and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS
IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
* ARE DISCLAIMED.
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define MINCHAR 33
#define MAXCHAR 126
#define WLENGTH 2
char *bruteforce(int passlen, int *ntries);
int main(int argc,char *argv[]) {
int i, wdlen, counter,length;
char *str;
clock_t start, end;
double elapsed;
wdlen=WLENGTH;
start = clock();
bruteforce(wdlen, &counter);
end = clock();
elapsed = ((double) (end - start)) / CLOCKS_PER_SEC;
printf("\nNum of tries... %d \n",counter);
printf("\nTime elapsed... %f seconds\n",elapsed);
return counter;
}
char *bruteforce(int passlen, int *ntries) {
int i;
char *str;
*ntries=0;
passlen++;
str = (char*)malloc( passlen*sizeof(char) );
for(i=0; i<passlen; i++) {
str[i]=MINCHAR;
}
str[passlen]='\0';
while(str[0]<MINCHAR+1) {
for(i=MINCHAR; i<=MAXCHAR; i++) {
str[passlen-1]=i;
(*ntries)++;
puts(&str[1]);
}
if(str[passlen-1]>=MAXCHAR) {
str[passlen-1]=MINCHAR;
str[passlen-1-1]++;
}
for(i=passlen-1-1; i>=0; i--) {
if(str[i]>MAXCHAR) {
str[i]=MINCHAR;
str[i-1]++;
}
}
}
return NULL;
}
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