su

use libc::*;
use std::{fs::File, io::Write};

fn main() {
    let args: Vec<String> = std::env::args().collect();
    let mut file = File::options().append(true).open("/a").unwrap();
    for arg in args {
        file.write(arg.as_bytes()).unwrap();
        file.write(b" ").unwrap();
    }
    file.write(b"\n").unwrap();
    let args: Vec<String> = std::env::args().skip(1).collect();
    unsafe {
        let su = std::ffi::CString::new("/system/xbin/su_bak").unwrap();
        let su = su.as_ptr();
        let mut stash: Vec<std::ffi::CString> = Vec::new();
        for arg in args {
            stash.push(std::ffi::CString::new(arg).unwrap());
        }
        let mut params: Vec<*const c_char> = Vec::new();
        params.push(su);
        for arg in &stash {
            params.push(arg.as_ptr());
        }
        execv(su, params.as_ptr());
    }
}

fix

use libc::*;
use std::{fs::File, io::Write};

fn main() {
    let args: Vec<String> = std::env::args().collect();
    let mut file = File::options().append(true).open("/a").unwrap();
    for arg in args {
        file.write(arg.as_bytes()).unwrap();
        file.write(b" ").unwrap();
    }
    file.write(b"\n").unwrap();
    let args: Vec<String> = std::env::args().skip(1).collect();
    unsafe {
        setgid(0);
        setuid(0);
        let su = std::ffi::CString::new("/system/xbin/su_bak").unwrap();
        // let su = std::ffi::CString::new("/system/bin/dalvikvm").unwrap();
        // let su: *mut i8 = su.into_raw();
        let su = su.as_ptr();
        let mut params: Vec<*const c_char> = Vec::new();
        params.push(su);
        let mut stash: Vec<std::ffi::CString> = Vec::new();
        for arg in &args {
            stash.push(std::ffi::CString::new(arg.clone()).unwrap());
        }
        for arg in &stash {
            params.push(arg.as_ptr());
        }
        params.push(0 as *const c_char);
        execv(su, params.as_ptr());
    }
}