1. DNS/KnotResolver/brau.internat.jp/brau.jpを乗取る/第二段/必要なかったケース

/その2

2. 毒の仕込み

$dig -t txt brau.internat.jp @127.0.0.1

; <<>> DiG 9.16.1-Ubuntu <<>> -t txt brau.internat.jp @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40882
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;brau.internat.jp.              IN      TXT

;; ANSWER SECTION:
brau.internat.jp.       60      IN      TXT     "brau.internat.jp"

;; Query time: 783 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: 日  8月 30 11:21:51 JST 2020
;; MSG SIZE  rcvd: 74

3. 毒入り返答

$ dig -t ns brau.jp @127.0.0.1

; <<>> DiG 9.16.1-Ubuntu <<>> -t ns brau.jp @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25784
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;brau.jp.                       IN      NS

;; ANSWER SECTION:
brau.jp.                300     IN      NS      fake.brau.jp.

;; Query time: 11 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: 日  8月 30 11:22:04 JST 2020
;; MSG SIZE  rcvd: 55

MoinQ: DNS/KnotResolver/危ない機能/brau.jpを乗取る/第二段/必要なかったケース (last edited 2020-08-30 23:00:14 by ToshinoriMaeno)