[原创]WarGame-narnia5 解题思路
Narnia5源码如下
/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char **argv){
int i = 1;
char buffer[64];
snprintf(buffer, sizeof buffer, argv[1]);
buffer[sizeof (buffer) - 1] = 0;
printf("Change i's value from 1 -> 500. ");
if(i==500){
printf("GOOD\n");
setreuid(geteuid(),geteuid());
system("/bin/sh");
}
printf("No way...let me give you a hint!\n");
printf("buffer : [%s] (%d)\n", buffer, strlen(buffer));
printf ("i = %d (%p)\n", i, &i);
return 0;
}
注意:上传附件及图片大小不得大于30M。
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