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Based
Published: April 2, 2026
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Useful tools for General Skills
- Number Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal instantly. Enter any value and see all four bases update in real time.
- Binary CalculatorPerform binary arithmetic (add, subtract, multiply, divide) with copyable outputs in every base.
- Morse Code DecoderDecode Morse code to plain text or encode text to Morse code. Supports all letters, digits, and common punctuation.
- Base64 & Base32 DecoderDecode Base64 and Base32 strings with auto-detection. Multi-layer mode unwraps nested encodings automatically.
More General Skills
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2Warm
Convert 42 decimal to binary. Python's bin(42) gives '0b101010', answer is 101010.
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Bases
Decode the Base64-encoded string bDNhcm5fdGgzX3IwcDM1 to recover the hidden flag, practicing a fundamental encoding scheme used throughout CTFs.
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First Grep
Use grep to find the picoCTF flag in a large text file. Reading it manually would be tedious.