---
title: "Open Book — Python Source"
type: "writeup"
section: "writeups"
status: "published"
author: "asep"
tags: ["gemastik", "ctf", "warmup", "misc"]
path: "writeups/gemastik-2026-warmup/ch7-open-book.md"
created_at: "2026-08-21T07:25:34.522Z"
updated_at: "2026-08-21T07:25:34.522Z"
event: "GEMASTIK 2026 Warmup"
challenge: "Open Book — Python Source"
category: "misc"
points: 500
difficulty: "easy"
flag: "GEMASTIK19{pyth0n_s0urc3_t3rbuka}"
---
# Open Book (500 pts) — Misc / Source

**File:** `chall.py`

Password yang benar **langsung dicetak dari array `SECRET`** (ASCII codes):

```python
SECRET = [71, 69, 77, 65, 83, 84, 73, 75, 49, 57, 123, 112, 121, 116, 104, 48, 110, 95,
          115, 48, 117, 114, 99, 51, 95, 116, 51, 114, 98, 117, 107, 97, 125]

flag = "".join(chr(c) for c in SECRET)
print(flag)
# GEMASTIK19{pyth0n_s0urc3_t3rbuka}
```

## Flag

`GEMASTIK19{pyth0n_s0urc3_t3rbuka}`