---
# System prepended metadata

title: HelloWorld
tags: [Rev, DarkCTF]

---

###### tags: `DarkCTF` `Rev`

# HelloWorld

- revese三個首要步驟
    - 執行
    - ltrace
    - strings

- ![](https://i.imgur.com/qGOEI8X.png)
    - 沒看到可用的資訊

- ![](https://i.imgur.com/pK4QMFw.png)
    - 看到裡面有兩個check，直接gdb 

- `disassemble check`
    - ![](https://i.imgur.com/RhKX6uR.png)

- 設好斷點c執行
    - ![](https://i.imgur.com/3j7mOHF.png)

- ![](https://i.imgur.com/wNs3EqY.png)
    - `flag:darkCTF{4rgum3nts_are_v3ry_1mp0rt4nt!!!}`