beep64

Warmup, DTMF, T9, base64

Challange starts with .wav that are around 30 min long.

After playing it it sounds like old analog phones that were in used in early 2000s Something like that:

They used DTMF encoding for each key in keyboard usually 0-9 * #

To confirm that Signal spectrum can be analized to read what frequencies are used.

That can be done in Audacity by using Plot Spectrum that results in following graph:

After analyzing the graph peak frequencies they are

  • 697Hz

  • 770Hz

  • 852Hz

  • 941Hz

  • 1209Hz

  • 1336Hz

  • 1477Hz

That are DTMF frequencies!

DTMF stands for Dual-tone multi-frequency signaling for example pressing key 1 resulted in wavefrom something like that

The best part of it that frequencies are in hearing range because they are in 697-1633Hz range.

More info can be found in wikipedia:

To decode what key are being pressend I used following dtmf decoder from github:

That outputs log string of digits separeted with * sign

python dtmf.py ~/Desktop/sine.wav 
8*44*33*333*555*2*4*444*7777*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*9999*33*777*666*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*9999*33*777*666*7777*7*2*222*33*666*66*33*7777*7*2*222*33*6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Numbers sometimes repeat, but no more than 4times. This looks like T9 dictionary

T9 is old-school way of inputing characters to mobile phones before they transformed to smartphones

So signle 8 is letter t

44 transorm to h

33 to e

333 to f

First four characters are the f

For making it less cumbersome to work with it I removed * characters

──(kali㉿kali)-[/tmp]
└─$ sed -z 's/*/ /g' -i sss
                                                                                                                                                                                      
┌──(kali㉿kali)-[/tmp]
└─$ cat sss                
8 44 33 333 555 2 4 444 7777 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 9999 33 777 666 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 666 66 33 7777 7 2 222 33 9999 33 777 666 7777 7 2 222 33 666 66 33

Next used online decoder from T9 to text

Which resulted in following string:

THEFLAGISZEROSPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEONEZEROSPACEONESPACEONESPACEONESPACEONESPACEZEROSPACEZEROSPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROSPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEONESPACEONEZEROSPACEONESPACEONESPACEONESPACEZEROSPACEZEROSPACEONESPACEONEZEROSPACEONESPACEONESPACEONESPACEZEROSPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEZEROSPACEZEROSPACEONEZEROSPACEONESPACEONESPACEONESPACEONESPACEZEROSPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEONEZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEONEZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEONESPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEONEZEROSPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEZEROSPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEONEZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEONESPACEONEZEROSPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEONEZEROSPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEONEZEROSPACEONESPACEONESPACEONESPACEZEROSPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEZEROSPACEONEZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEONEZEROSPACEONESPACEONESPACEONESPACEONESPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEONESPACEZEROZEROSPACEONESPACEONESPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEONEZEROSPACEONESPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONEZEROSPACEONESPACEONESPACEONESPACEONESPACEZEROSPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEONEZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEONESPACEZEROZEROSPACEONESPACEZEROSPACEZEROSPACEZEROSPACEONESPACEZEROSPACEZEROZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEONESPACEZEROSPACEONEZEROSPACEONESPACEONESPACEONESPACEZEROSPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEONESPACEONESPACEONEZEROSPACEONESPACEZEROSPACEZEROSPACEONESPACEZEROSPACEZEROSPACEZEROZEROSPACEZEROSPACEONESPACEONESPACEZEROSPACEZEROSPACEZEROSPACEZEROZEROSPACEZEROSPACEONESPACEONESPACEONESPACEONESPACEZEROSPACEONE

Which clearly is encoded in binary.

Replacing space with ZERO with 0 and ONE with 1 yelds

01011010011011010111100001101000010110100011001101110011011101110100111001000100010010010111100001011001010101000110101100110010010011100100011101000110011010110101101001000100011010110011001101011010011011010101100101110111010011100100010001000101001100000100110101111010010001100110110001001101011010100101000101111000010011110100011101010101001100100100111001000100010101010111011101001111010010000011000000111101

This decodes to base64

decoding from base64

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