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Crypto 7

Crypto 7

  • 📚 Category: Crypto
  • 🎯 Points: 200
  • 📝 Description: Use flagCheck to input the flag you get from the challenge to get the actual flag

✍️ Writeup

We one file: 

chall.txt


Cipher text: VAOZM HPXC YZGDWZMVODJI OCZ VPOCJMDOT CVN YZXDYZY OCVO OCZMZ DN JIZ DYZV RCDXC RZ RDGG OVFZ PK VN KVMO JA JPM XVPNZ. OJ CZVM HJMZ VWJPO DO, WZ NPMZ OJ VOOZIY OCZ IZSO HZZODIB, PNZ OCZ FZT BZIZMVODJI OJ BZO DI. OCZMZ DN HPXC KGVIIDIB IZZYZY OJ WZ YJIZ, WPO DA RZ XVI ZSZXPOZ OCZ KGVI RZ RDGG WZ AMZZY.

This is a ROT5

AFTER MUCH DELIBERATION THE AUTHORITY HAS DECIDED THAT THERE IS ONE IDEA WHICH WE WILL TAKE UP AS PART OF OUR CAUSE. TO HEAR MORE ABOUT IT, BE SURE TO ATTEND THE NEXT MEETING, USE THE KEY GENERATION TO GET IN. THERE IS MUCH PLANNING NEEDED TO BE DONE, BUT IF WE CAN EXECUTE THE PLAN WE WILL BE FREED.

Let's check with flagCheck

hacker@csawctf2011~crypto-200-7:/challenge$ ./flagCheck
Enter the flag: GENERATION
Correct flag!
pwn.college{REDACTED}