main.py

#run python3 main.py
from ctypes import *
import subprocess
import os
libc = cdll.LoadLibrary('libc.so.6')

class Deff:
    def __init__(self, *args, **kwargs):
        self.CLONE_NEWNS=0x00020000
        self.CLONE_NEWUTS=0x04000000
        self.CLONE_NEWIPC=0x08000000
        self.CLONE_NEWUSER=0x10000000
        self.CLONE_NEWPID=0x20000000
        self.CLONE_NEWNET=0x40000000
        self.CLONE_IO=0x80000000
        return super().__init__(*args, **kwargs)

def clone(fn, flags=0):
    def stub():
        return fn() or 0

    stack = bytes(0x100000)
    ret = libc.clone(CFUNCTYPE(c_int)(stub), c_void_p(cast(stack, c_void_p).value + len(stack)), flags)
    if ret == -1:
        _errno = get_errno() or errno.EPERM
        raise OSError(_errno, os.strerror(_errno))

def testp():
    cmd = "/bin/bash"
    #subprocess.call(cmd, stdout=subprocess.PIPE, shell=True, check=True)
    #subprocess.run(cmd,shell=True,check=True)
    os.system("/bin/bash")
deff = Deff()
flag = deff.CLONE_NEWNET|deff.CLONE_NEWNS| deff.CLONE_NEWPID | deff.CLONE_NEWUSER | deff.CLONE_NEWUTS
clone(testp, 0)
#print(deff.CLONE_NEWUTS)