Descripción

You are monitoring data streams exiting suspicious TOR nodes, believed to be part of the Empire of Volnaya’s covert APT infrastructure. As Talion “Little Byte” Reyes you’ve been assigned to identify and evaluate indicators of compromise embedded in the exfiltrated traffic.

Dado un stream de datos (letras minúsculas y dígitos), debemos calcular su threat score usando la fórmula:

threat score = Σ (ocurrencias del keyword × peso del keyword)

Los keywords y sus pesos son:

Keyword	Peso
scan	1
response	2
control	3
callback	4
implant	5
zombie	6
trigger	7
infected	8
compromise	9
inject	10
execute	11
deploy	12
malware	13
exploit	14
payload	15
backdoor	16
zeroday	17
botnet	18

Ejemplo:

Input:  payloadrandompayloadhtbzerodayrandombytesmalware
Output: 60

payload × 2 → 30
zeroday × 1 → 17
malware × 1 → 13
Total = 60

Solución

Usamos str.count() para contar las ocurrencias de cada keyword en el stream y acumulamos el score en una sola línea:

keywords = {
    "scan": 1, "response": 2, "control": 3, "callback": 4,
    "implant": 5, "zombie": 6, "trigger": 7, "infected": 8,
    "compromise": 9, "inject": 10, "execute": 11, "deploy": 12,
    "malware": 13, "exploit": 14, "payload": 15, "backdoor": 16,
    "zeroday": 17, "botnet": 18
}

stream = input()
print(sum(stream.count(kw) * w for kw, w in keywords.items()))

Solve

Flag

HTB{thr34t_L3v3L_m1dn1ght}

Challenge Threat Index de Hack The Box completado.

Hack The Box: Threat Index

Descripción

Solución

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