# Save Earth

## 题目

In the mid 21st century, Ex-NASA pilot Cooper leaves his little daughter and goes an interstellar journey around the space to find an alternative planet (PLAN A) or to capture gravitational data and send it back to earth, which Scientists will use to save Earth. However Cooper finds himself stuck in a tesseract that spans across time, there is only one way he could transmit the data to his little girl.

We have obtained parts of what Cooper sent to his daughter, can you find the flag and save the earth?

Note: This question does not follow the flag format

## 解决方案

 1 tshark -r /mnt/c/Users/domain/CTF/pctf2019/SaveEarth.pcap -V | grep "Leftover Capture Data" 

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0101000000000000 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0101000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0101000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0101000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0101000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0101000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0104000000000000 Leftover Capture Data: 0102000000000000 Leftover Capture Data: 0102000000000000 

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 #include int main() { while (!std::cin.eof()) { char buf[64] = {}; std::cin.getline(buf, 64); std::string string(buf); switch (string[26]) { case '1': std::cout << ' '; break; case '2': std::cout << '-'; break; case '4': std::cout << '.'; break; default: ; } } return 0; } 

 1 -.-. - ..-. ... ....- ...- ...-- 

 1 CTFS4V3