使用Python获取环境变量地址

Question

for an university project I have to perform Buffer Overflow with some programs given by the professor.

I want to setup my shellcode environment variable with python and I do that with:

import os
os.environ("EGG") = "..."
os.system('bash')

so now python spawns a child bash process. But now how can I print the address of EGG? I have done this with C:

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

int main(){
    printf("%x", getenv("EGG"));
    return 0;
}

but I want to do it with Python. Anyone can help?

Answer 1

You can use id() https://docs.python.org/2/library/functions.html#id

id(os.environ.get('EGG')

in hex:

hex(id(os.environ.get('EGG'))