PACTF_2017:

Category: Points: 40 Description:

Those Dinosaurs… had money? Turns out they also created a ledger system.

Hint:

I wonder what entry you’re looking for…

Write-up

Revisiting our old dinosaur site, we find an interesting tidbit.

$ dig TXT ledger.dinosaurneverforgetsystem.tk

; <<>> DiG 9.8.3-P1 <<>> TXT ledger.dinosaurneverforgetsystem.tk
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58605
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ledger.dinosaurneverforgetsystem.tk. IN    TXT

;; ANSWER SECTION:
ledger.dinosaurneverforgetsystem.tk. 14141 IN TXT "3890a940bf54bb50d2ad334d0d0ddbda8a8737b6873277412756724292e89e31"

;; Query time: 7 msec
;; SERVER: 164.78.239.15#53(164.78.239.15)
;; WHEN: Tue Apr 18 13:58:43 2017
;; MSG SIZE  rcvd: 130

What does 3890a940bf54bb50d2ad334d0d0ddbda8a8737b6873277412756724292e89e31 mean? Decoding it into ASCII gives nothing, let's try to search it. BAM!

Therefore, the flag is those_dinosaurs_sure_are_clever.