TryHackMe - c4ptur3-th3-fl4g

1 Translation & Shifting

1) leet

c4n y0u c4p7u23 7h3 f149?

leet 로 작성되어있습니다. 알파벳으로 작성합니다.

can you capture the flag?

 

2) from binary
https://gchq.github.io/CyberChef/#recipe=From_Binary('Space',8)&input=MDExMDExMDAgMDExMDAxMDEgMDExMTAxMDAgMDExMTAwMTEgMDAxMDAwMDAgMDExMTAxMDAgMDExMTAwMTAgMDExMTEwMDEgMDAxMDAwMDAgMDExMTAwMTEgMDExMDExMTEgMDExMDExMDEgMDExMDAxMDEgMDAxMDAwMDAgMDExMDAwMTAgMDExMDEwMDEgMDExMDExMTAgMDExMDAwMDEgMDExMTAwMTAgMDExMTEwMDEgMDAxMDAwMDAgMDExMDExMTEgMDExMTAxMDEgMDExMTAxMDAgMDAxMDAwMDE

3) base32
https://gchq.github.io/CyberChef/#recipe=From_Base32('A-Z2-7%3D',false)&input=TUpRWEdaSlRHSVFHUzRaQU9OMlhBWkxTRUJSVzYzTE5ONVhDQTJMT0VCQlZJUlJIT009PT09PT0

4) base64
https://gchq.github.io/CyberChef/#recipe=From_Base64('A-Za-z0-9%2B/%3D',true,false)&input=UldGamFDQkNZWE5sTmpRZ1pHbG5hWFFnY21Wd2NtVnpaVzUwY3lCbGVHRmpkR3g1SURZZ1ltbDBjeUJ2WmlCa1lYUmhMZz09

5) rot13
https://gchq.github.io/CyberChef/#recipe=ROT13(true,true,false,13)&input=RWJnbmdyIHpyIDEzIGN5bnByZiE

 

6) rotate
어떤 암호화가 적용되었는지 감이 안오면 여기서 알고리즘 판별을 진행합니다. ROT-47 cipher 라고나옵니다.
https://www.dcode.fr/cipher-identifier

https://gchq.github.io/CyberChef/#recipe=ROT47(47)&input=KkBGIERBOj8gPjYgQzo4OUUgQ0BGPzUgMzIzSiBDOjg5RSBDQEY/NSBXY2YgRTo%2BNkRY

7) morsecode

https://gchq.github.io/CyberChef/#recipe=From_Morse_Code('Space','Line%20feed')&input=LSAuIC4tLi4gLiAtLi0uIC0tLSAtLSAtLSAuLi0gLS4gLi4gLS4tLiAuLSAtIC4uIC0tLSAtLgouIC0uIC0uLS4gLS0tIC0uLiAuLiAtLiAtLS4

 

8) decimal to ascii

https://gchq.github.io/CyberChef/#recipe=From_Decimal('Space',false)&input=ODUgMTEwIDExMiA5NyA5OSAxMDcgMzIgMTE2IDEwNCAxMDUgMTE1IDMyIDY2IDY3IDY4

9) base64, morse code, from binary, rot47, decimal to ascii
사이버 쉐프 링크

 

2 Spectrograms

audacity의 spectorgram 기능을 사용하면 플래그를 볼 수 있습니다.

Super Secret Message

3 Steganography

여기서 검사하면, steghide로 숨겨진 텍스트가 있다고 분석됩니다. 숨겨진 파일안에 플래그아 있습니다.
https://www.aperisolve.com/735f86f28e424dc6a376b546be938633

SpaghettiSteg

 

4 Security through obscurity

https://www.aperisolve.com/7840a0e85a1d863b9c184567752a54e5

바이너리 문자열에 텍스트를 숨겨놓았습니다.

 

1) filename & extension?

hackerchat.png

 

2) Find the hidden text.

AHH_YOU_FOUND_ME!