CrystalBurz/CyberEdu-Challenge-Writeups
GitHub: CrystalBurz/CyberEdu-Challenge-Writeups
CyberEDU平台的CTF挑战题解合集，包含密码学、逆向工程、隐写术等多类入门级题目的解题思路和原始文件。
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# CyberEdu 挑战题解
来自 [CyberEDU](https://cyberedu.ro) 平台的 CTF 挑战题解、解决方案及原始题目文件。
## 已解决的挑战
| 挑战 | 类别 | 难度 | 分数 | 标志 (Flag) |
|-----------|----------|------------|--------|------|
| [corrupt-file](writeups/corrupt-file.md) | Misc | Entry Level | 10 | `DCTF{a0bd4e...}` |
| [cross-or-zero](writeups/cross-or-zero.md) | Crypto | Entry Level | 10 | `DCTF{c1e700...}` |
| [inception](writeups/inception.md) | Misc/Stego | Entry Level | 10 | `DCTF{394a6d...}` |
| [mathematics](writeups/mathematics.md) | Reverse Engineering | Entry Level | 10 | `ECSC{70e0aa...}` |
| [password](writeups/password.md) | Reverse Engineering | Entry Level | 10 | `DCTF{09fa7a...}` |
| [why-xor](writeups/why-xor.md) | Crypto | Entry Level | 10 | `ctf{79f107...}` |
## 仓库结构
```
├── README.md
├── writeups/ # Detailed writeups for each challenge
│ ├── corrupt-file.md
│ ├── cross-or-zero.md
│ ├── inception.md
│ ├── mathematics.md
│ ├── password.md
│ └── why-xor.md
└── challenges/ # Original challenge files
├── corrupt-file/ # ZIP->XZ->TAR chain
├── cross-or-zero/ # Python XOR script
├── inception/ # JPEG with embedded PNG QR code
├── mathematics/ # C++ ELF binary (mutual recursion)
├── mountain/ # PNG steganography
├── password/ # Python 2 .pyc bytecode
└── why-xor/ # Two-time pad XOR
```
## 关于
自主解决 CyberEDU CTF 挑战时生成的题解。每份题解记录了解决方法、使用的工具以及关键见解。
标签：CTF题解, CyberEDU, ELF, Python, Writeup, XOR, 二维码, 云资产清单, 安全技能, 密码学, 手动系统调用, 数据恢复, 文件分析, 无后门, 杂项, 竞赛真题, 编码解码, 网络安全, 解题思路, 训练平台, 逆向工具, 逆向工程, 隐写术, 隐私保护