What is it? @.@

Here is the place where I record some tactics about wargame, systems, and other security issues.

2012-10-12

WeChall - Training: Encodings I

Description:

We intercepted this message from one challenger to another, maybe you can find out what they were talking about.
To help you on your progress I coded a small java application, called JPK.
Note: The message is most likely in english.

10101001101000110100111100110100
00011101001100101111100011101000
10000011010011110011010000001101
11010110111000101101001111010001
00000110010111011101100011110111
11100100110010111001000100000110
00011110011110001111010011101001
01011100100000101100111011111110
10111100100100000111000011000011
11001111100111110111110111111100
10110010001000001101001111001101
00000110010111000011110011111100
11110011111010011000011110010111
0100110010111100100101110

Solution:

  1. Divide the whole binary code string into 7 bits for each one. Then, make each one is in 8bits (add a 0 in the left of each one).
    010101000110100001101001011100110010000001110100011001010111100001110100001000000110100101110011001000000011011100101101011000100110100101110100001000000110010101101110011000110110111101100100011001010110010000100000011000010111001101100011011010010110100100101110001000000101100101101111011101010111001000100000011100000110000101110011011100110111011101101111011100100110010000100000011010010111001100100000011001010110000101110011011110010111001101110100011000010111001001110100011001010111001000101110
  2. Use the converter below to convert them.
    http://home.paulschou.net/tools/xlate/
  3. Here is the original text.
    This text is 7-bit encoded ascii. Your password is easystarter.
  4. Submit the password. It's done!