zznop

/**
 * MIT License
 *
 * Copyright (c) 2021 Brandon Miller (zznop)
 *
 * This program decodes SEGA Genesis Game Genie alphanumeric codes and displays the encoded patch information
 */

package main

zznop

package main;

import(
    "github.com/labstack/echo"
    "time"
    "path/filepath"
    "html/template"
    "strings"
    "os"
    "net/http"

zznop

Keybase proof

I hereby claim:

• I am zznop on github.
• I am zznop (https://keybase.io/zznop) on keybase.
• I have a public key ASCst2e_8yle-NJFKKbC4oj_XR_E9BuuTRVh2Z6qXJShngo

To claim this, I am signing this object:

zznop

import ida_segment
import ida_bytes
import idautils
import idaapi
import idc
import re

__author__     = 'zznop'
__copyright__  = 'Copyright 2019, zznop'
__email__      = 'zznop0x90@gmail.com'

zznop

# megadrive-loader.py
# zznop 2019
#
# Load ROM as a flat binary, set processor to 68000,
# and run the script

import idc
import idautils
import ida_bytes
import ida_funcs

zznop

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Copyright (C), zznop, brandonkmiller@protonmail.com
;;;
;;; This software may be modified and distributed under the terms
;;; of the MIT license.  See the LICENSE file for details.
;;;
;;; DESCRIPTION
;;;
;;; This PoC shellcode is meant to be compiled as a blob and prepended to a ELF

zznop

/* Plaid CTF 2018 v8 Exploit. Exploit begins around line 240 */


/* ### Utils, thanks saelo ### */ 

//
// Tiny module that provides big (64bit) integers.
//
// Copyright (c) 2016 Samuel Groß
//

zznop

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

void take_int(int j)
{
    if (j == 1337)
        printf("How could this be? j was never initialized!\n");
}

zznop

int is_odd(int number)
{
    return number == 0 ? 0 : is_even(abs(number) - 1);
}

int is_even(int number)
{
    return number == 0 ? 1 : is_odd(abs(number) - 1);
}

zznop

uint32_t factorial(uint32_t number)
{
    if (number <= 1)
    {
        return 1;
    }

    return number * factorial(number -1);
}