asepharyana
7a6e717c28
- Deleted all previous dummy docs (defcon-quals-2024, infra/cloudflare-525, debugging/websocket-timeout, template, docs/*, notes/*, research/*) - Added 14 Gemastik warmup writeups covering encoding, stego, web, pwn, crypto - ch13: RSA small factors; ch14: RSA special integers via paper-search (GCD with paper appendix primes) - All flags recovered and documented with solution methods
25 lines
485 B
Markdown
25 lines
485 B
Markdown
---
|
|
title: "Needle — Strings Binary"
|
|
event: "GEMASTIK 2026 Warmup"
|
|
challenge: "Needle"
|
|
category: "forensics"
|
|
points: 500
|
|
difficulty: "easy"
|
|
flag: "GEMASTIK19{str1ngs_c4n_f1nd_m3}"
|
|
---
|
|
|
|
# Needle (500 pts) — Steganografi / Binary
|
|
|
|
**File:** `secret.bin` (748 bytes, binary)
|
|
|
|
Teks tersembunyi di antara "junk data". Cukup ekstrak **strings** yang printable:
|
|
|
|
```bash
|
|
strings secret.bin | grep GEMASTIK
|
|
# GEMASTIK19{str1ngs_c4n_f1nd_m3}
|
|
```
|
|
|
|
## Flag
|
|
|
|
`GEMASTIK19{str1ngs_c4n_f1nd_m3}`
|