Challenge / Misc

Lucky Dice

By Jennofrie Daguil · Cybersecurity and Red Team Operator

Lucky Dice is a sanitized challenge note from the local HTB archive, organized for quick review by category, difficulty, evidence flow, and reusable operator

Very EasyPublished 2024-12-07Sanitized local writeup

Scenario

Lucky Dice attack path

Lucky Dice is a sanitized challenge note from the local HTB archive, organized for quick review by category, difficulty, evidence flow, and reusable operator

Objective

Challenge walkthrough focused on Misc evidence, validation, and reusable operator lessons.

Walkthrough flow

Artifact review

Hypothesis

Validated solve path

Proof captured

Source coverage

Moderate source coverage

Status: partial. This article is generated from 4 sanitized Markdown sources and keeps raw flags, credentials, keys, cookies, and reusable secrets out of the rendered blog.

68% coverage

Evidence verdict

Moderate confidence: the page is useful for review, but it should be treated as partial because the available source material is thinner or less narrative-complete.

Misc/LuckyDice/writeup.md
htb-challenge/Misc/LuckyDice/notes.md
htb-challenge/Misc/LuckyDice/memory-summary.md
htb-challenge/Misc/LuckyDice/hypothesis-board.md

Technical Walkthrough

Lucky Dice - Writeup

Challenge Info

Name: Lucky Dice
Category: Misc
Difficulty: Very Easy
Flag: <flag stored in loot/flag.txt>

Approach

Triage

Single Python file (challenge.py) — a dice game server that requires correct answers for 100 rounds within 0.3 seconds each.

Analysis

8-13 players per game (random)
Each round: round * 2 + 2 dice per player
Winner = highest sum; ties broken by highest player number
Timeout: 0.3 seconds — impossible manually, requires automation

Solve

python

# Parse "Player X: d1 d2 d3 ..." lines with regex
players = re.findall(r'Player (\d+): ([\d ]+)', data)

# Find winner: highest sum, highest player number on tie
max_sum = -1
winner = -1
for player_num, dice_str in players:
    s = sum(int(d) for d in dice_str.split())
    pn = int(player_num)
    if s > max_sum or (s == max_sum and pn > winner):
        max_sum = s
        winner = pn

Full script at solve/solve.py — plain socket implementation (no pwntools dependency).

Key Insight

Pure automation challenge. The logic is trivial (sum dice, find max), but the 0.3-second timeout forces scripting. No crypto, no exploitation — just fast I/O parsing.

Time: ~3 minutes

Source-Backed Dossier

The sections below are merged from companion Markdown notes for the same case. They are rendered after sanitization so the article stays precise without publishing raw flags, credentials, or target-specific secrets.

Notes

Scope

Challenge: Lucky Dice
Category: Misc
Difficulty: Very Easy
Target: <TARGET>:31092
Started: 2026-05-07

Evidence Ledger

Timestamp	Action	Finding	Next
00:00	Read challenge.py	100-round dice game, 0.3s timeout per answer, need to identify winner each round	Write automation
00:02	Write solve.py	Socket-based automation, parse dice sums, send winner	Run against remote
00:03	Run solve.py	All 100 rounds correct, flag received	Done

Solution

Game rolls dice for 8-13 players across 100 rounds
Must identify the round winner (highest dice sum) within 0.3 seconds
Tie-breaker: highest-numbered player wins
Automated with Python sockets + regex parsing

Memory Summary

Metadata

Platform: HackTheBox Challenges
Category:
Challenge:
Difficulty:
Source workspace:

Validated Solve Chain

Concepts only. Do not include raw flags, reusable credentials, tokens, cookies, private keys, or live secrets.

Reusable Lessons

Dead Ends

Tool Quirks

Evidence Paths

Ingestion Decision

Proposed for LightRAG: yes/no
Requires user approval before ingestion: yes

Hypothesis Board

Rank	Path	Evidence	Missing Proof	Cheapest Validation	Confidence	Status

Closed Branches

Branch	Evidence Tested	Failure Output	Reason Closed	Revisit Condition

Technical analogy

How to remember this solve

Think of the challenge like a timed puzzle booth. If the task is too fast or repetitive for a person, the intended move is usually to write a small helper that performs the simple action perfectly.

For Lucky Dice, keep the mental model simple: identify the trusted assumption, prove it with the smallest safe test, then automate or repeat only the part that directly leads to the flag.