write up ctf by ariafatah

ariaf.my.id/ctf_aria/cryptography/M_Mind your Ps and Qs.html

soal

In RSA, a small e value can be problematic, but what about N? Can you decrypt this? values

hint

  • Bits are expensive, I used only a little bit over 100 to save money

solve

wget https://mercury.picoctf.net/static/12d820e355a7775a2c9129b2622a7eb6/values

cat values
# Decrypt my super sick RSA:
# c: 843044897663847841476319711639772861390329326681532977209935413827620909782846667
# n: 1422450808944701344261903748621562998784243662042303391362692043823716783771691667
# e: 65537
  • tool decrypt rsa
    • https://www.dcode.fr/rsa-cipher
  • dan saya masukan seperti ini alt text 
    picoCTF{sma11_N_n0_g0od_00264570}

flag

picoCTF{sma11_N_n0_g0od_00264570}