###### tags: `picoCTF` # PWN/Guessing Game 1 - 題目:I made a simple game to show off my programming skills. - 檔案: - nc jpiter.challenges.picoctf.org 38467 - [vuln](https://jupiter.challenges.picoctf.org/static-/759df904e72b80ca3155ee081f3cb189/vuln) - [vuln.c](https://jupiter.challenges.picoctf.org/static/759df904e72b80ca3155ee081f3cb189/vuln.c) - [Makefile](https://jupiter.challenges.picoctf.org/static/759df904e72b80ca3155ee081f3cb189/Makefile) - 解題思路: - 首先使用file來分析檔案的類型,可以發現檔案是64bit, statically linked。 - ![](https://i.imgur.com/qEqBYDp.png) - 其次使用checksec查看執行檔的保護機制,以便後續針對不同的解法解題。 - ![](https://i.imgur.com/EPAjgKe.png)