# HITCON CTF Quals - 2019

## Misc / 198 - EmojiiVM

> It's time to test your emoji programming skill!
>
> Make sure to check out [readme.txt](./readme.txt) before you enter the challenge :)
>
> `nc 3.115.122.69 30261`
>
> Notice:
>
> Make sure you send exact N bytes after you input N as your file size.
>
> Otherwise the server might close the connection before it print out the flag !
>
>
> Author: bruce30262
>
> 66 Teams solved.

### Solution

By [@jaidTw](https://github.com/jaidTw)

It's basically an assembly language challenge and the solution must < 2000 bytes.
Computing branch target is bothering because address should be composed from 0 ~ 10, but we can use `NOP` padding to avoid affecting adderss.

[sol.em](./sol.em)
[misc.py](./misc.py)

Original writeup (https://github.com/10secTW/ctf-writeup/blob/master/2019/HITCON%20CTF/EmojiVM/misc/EmojiiVM_en.md).