006

• Description: hackmyvm.eu. 100 IN TXT

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🔎 Solution

The challenge description includes a clue hinting at a DNS record:

hackmyvm.eu. 100 IN TXT

Breaking it down:

• <domain> indicates the hostname the record belongs to - in this case, hackmyvm.eu.
• <TTL> represents the Time To Live value, meaning how long (in seconds) the record will remain cached before a resolver queries it again - here it's 100.
• <class> specifies the record class - IN stands for Internet.
• <type> refers to the DNS record type - here it's TXT, a record format used to store arbitrary text.

To enumerate TXT records, I executed:

> dig hackmyvm.eu TXT

; <<>> DiG 9.20.11-4+b1-Debian <<>> hackmyvm.eu TXT
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25713
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;hackmyvm.eu.                   IN      TXT

;; ANSWER SECTION:
hackmyvm.eu.            60      IN      TXT     "hmv{sasviyalin}"

;; Query time: 255 msec
;; SERVER: 116.97.90.124#53(116.97.90.124) (UDP)
;; WHEN: Sat Nov 22 11:33:24 EST 2025
;; MSG SIZE  rcvd: 68

And with that, the flag appears.

🚩Flag

hmv{sasviyalin}