febnug

<?php

// Taken from : https://gist.github.com/ammarfaizi2/ac9639359a1f315f0aedc6a4bbbc60fb

$strings = [
    "/bin/sh"
//  "Enter Password: ",
//  "Enter Password 2: ",
//  "Enter Password 3: ",
//  "Wrong Password!\n",

febnug

// solusi yang saya tulis di :
// https://stackoverflow.com/questions/59536438/calling-x86-local-function-using-shellcode

#include <stdio.h>
#include <string.h>

void redirect() {
    FILE *out = fopen("redirect.txt", "w");
    fprintf(out, "REDIRECT WORKED");
    fclose(out);

febnug

int timings[64*N];
int main(void)
{

    int i;

    __asm__ __volatile__ (  
       "lea edx, [timings] \n\t"  
       "rdtsc \n\t"  
       ".rept 32 \n\t"  

febnug

32-bit ELF binary

how to assemble and link:

nasm -f elf32 -o <filename>.o <filename>.asm
ld -m elf_i386 -o <filename> <filename>.o

template code (hello world):

section .text
global _start