asepharyana
0de2458955
- Deleted all 14 dummy docs from DB + filesystem - Created 14 Gemastik warmup writeups + index via create_document API (DB-first) - ch1-ch12: encoding/stego/web/pwn basics - ch13: RSA small factors - ch14: RSA special integers via paper-search (GCD with paper appendix primes) - All 15 docs indexed and live at wiki.asepharyana.my.id
923 B
923 B
title, type, section, status, author, tags, path, created_at, updated_at, event, challenge, category, points, difficulty, flag
| title | type | section | status | author | tags | path | created_at | updated_at | event | challenge | category | points | difficulty | flag | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Julius — ROT13 Caesar Cipher | writeup | writeups | published | asep |
|
writeups/gemastik-2026-warmup/ch2-julius.md | 2026-08-21T07:25:20.120Z | 2026-08-21T07:25:20.120Z | GEMASTIK 2026 Warmup | Julius — ROT13 Caesar Cipher | crypto | 500 | easy | GEMASTIK19{caesar_r0t_th1rt33n_klasik} |
Julius (500 pts) — Caesar / ROT13
File: chall.txt → TRZNFGVX19{pnrfne_e0g_gu1eg33a_xynfvx}
Caesar cipher dengan pergeseran paling populer di internet = ROT13 (geser 13).
TRZNFGVX19 → GEMASTIK19, dst.
import codecs
s = "TRZNFGVX19{pnrfne_e0g_gu1eg33a_xynfvx}"
flag = codecs.encode(s, "rot_13")
print(f"Flag: {flag}")
# Output: GEMASTIK19{caesar_r0t_th1rt33n_klasik}
Flag
GEMASTIK19{caesar_r0t_th1rt33n_klasik}