c100 – Carnivore
Read the file!
Solução
Baixe o arquivo .tar.gz e descompacte.
1 |
$ tar -vzxf 73d347e21d1d5b41167b1d770110fea5.tar.gz |
Vamos analisar o arquivo com o HexEditor:
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$ hexeditor c100.txt |

Logo vemos um texto formado por apenas 20 e 09.
Convertendo para binário o “20” em “0” e “09” em “1”
Obtemos o seguinte binário:
0 1 0 0 1 1 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 0 1 1 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 0 0 1 1 0 1 1 1 0 0 1 1 0 1 0 0 1 0 1 1 1 0 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 0 0 1 0 0 1 1 0 0 1 0 1 0 0 1 0 0 0 0 0 1 1 0 0 0 0 1 1 1 0 1 0 1 0 0 1 0 0 1 0 0 0 0 0 0 1 1 0 1 1 0 1 0 1 1 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 1 0 1 0 0 0 1 1 0 1 1 1 1 0 0 1 0 0 0 0 0 0 1 1 0 1 1 0 0 0 1 1 0 1 0 0 1 0 1 1 0 1 1 0 1 0 1 1 0 1 0 0 1 0 1 1 1 0 1 0 0 0 1 1 0 0 0 0 1 0 1 1 0 0 1 0 0 0 1 1 0 1 1 1 1 0 0 1 0 1 1 0 0 0 0 1 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 1 1 0 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 0 1 1 0 1 1 0 1 0 0 1 0 1 1 1 0 0 1 1 0 1 1 0 0 0 0 1 0 1 1 0 1 1 0 1 0 1 1 0 1 1 1 1 0 1 1 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 1 1 0 1 0 1 1 0 1 1 1 1 0 1 1 0 1 1 1 0 0 1 1 0 1 0 0 1 0 1 1 1 0 1 0 0 0 1 1 0 1 1 1 1 0 1 1 1 0 0 1 0 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 1 0 1 1 1 0 1 1 0 0 0 0 1 1 1 0 1 0 0 0 1 1 0 1 1 0 1 1 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 1 1 1 0 0 0 0 0 1 1 0 0 1 0 1 0 1 1 0 1 1 1 0 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 0 1 1 0 1 1 0 1 1 1 1 0 1 1 0 1 1 0 1 0 1 1 1 0 1 0 1 0 1 1 0 1 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 0 1 1 0 1 1 0 0 0 0 1 1 1 0 0 0 0 1 1 1 0 1 0 0 1 1 1 1 1 0 0 0 0 1 1 1 0 1 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 1 0 1 0 0 1 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 0 0 1 0 1 1 0 0 1 0 0 0 1 1 0 1 1 1 1 0 1 1 1 0 0 1 1 0 0 1 0 1 1 0 0 0 0 1 0 0 0 0 0 0 1 1 0 1 1 0 1 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 1 0 0 0 0 1 0 1 0 0 1 1 1 0 1 0 0 0 1 1 0 0 1 0 1 0 1 1 0 1 1 0 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 1 0 0 0 0 1 1 1 0 1 1 0 1 0 0 0 1 1 0 1 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 0 1 1 0 1 1 0 0 0 0 1 0 1 1 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 1 1 0 1 0 0 0 1 1 0 0 0 0 1 0 1 1 0 1 1 0 1 0 1 1 0 0 0 1 0 1 1 0 0 0 0 1 1 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 1 0 0 1 0 1 1 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 10
Convertendo o binário para ascii obtemos a flag.
Flag
O carnivore é muito limitado, precisamos monitorar não apenas as comunicações de dados, mas as telefônicas também.
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