cryptoProeasy

baby modulus — Small RSA

spbctf

Task: RSA with small 128-bit modulus. Solution: Factor n via factordb.com and compute private key d to decrypt.

$ ls tags/ techniques/

rsa small_modulus factorization factordb

rsa_small_modulus_factorization

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

🔒

Permission denied (requires tier.pro)

Sign in to access full writeups

$sign in

$ grep --similar

Similar writeups

[crypto][Pro]128 is new black — RSA Factorization— spbctf
[crypto][Pro]weird modulus— spbctf
[crypto][Pro]Read Sleep Attack— spbctf
[crypto][Pro]Tooled RSA— spbctf
[crypto][Pro]Darling— spbctf