小编Sou*_*rya的帖子

我正在尝试利用 SUID 程序。

该计划是：

#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>


#define e(); if(((unsigned int)ptr & 0xff000000)==0xca000000) { setresuid(geteuid(), geteuid(), geteuid()); execlp("/bin/sh", "sh", "-i", NULL); }

void print(unsigned char *buf, int len)
{
    int i;
    printf("[ ");
    for(i=0; i < len; i++) printf("%x ", buf[i]); 
    printf(" ]\n");
}

int main()
{
    unsigned char buf[512];
    unsigned char *ptr = buf + (sizeof(buf)/2);
    unsigned int x;

    while((x = getchar()) != EOF) {
            switch(x) {
                    case '\n': print(buf, sizeof(buf)); continue; break;
                    case …