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Steganomobile

  • Description: After extraction of mobile data, the searcher, investigator have got this sequence of numbers. Maybe a phone number ?
  • Difficulty: Very Easy

🔎 Solution​

The content of the provided .txt file consists of a sequence of numbers, formatted as shown below.

222-33-555-555-7-44-666-66-33

To identify the encoding format, I used a text identifier tool, which recognized the sequence as Multi-tap Phone (SMS) input - the type used on old mobile keypads where each number corresponds to multiple letters.

Using a Multi-tap decoder, I entered the numeric sequence, and the output revealed the word cellphone. This turned out to be the correct solution for the challenge.

🚩Flag​

cellphone