misc - Blog of Parth Kolekar
Breaking Random Number Generators with Chosen Seed
#crypto #ctf #misc #pythonFind the flag.
Source is as follows
#!/usr/bin/env python3
import random
import time
import string
import signal
# use secure seed
random.seed(int(time.time()))
with open('flag.txt') as f:
flag = f.read()
# large constant prime
p = 174807157365465092731323561678522236549173502913317875393564963123330281052524687450754910240009920154525635325209526987433833785499384204819179549544106498491589834195860008906875039418684191252537604123129659746721614402346449135195832955793815709136053198207712511838753919608894095907732099313139446299843
Royal Primes
#ctf #misc #rsac = 2911901299590689319468053634625275622654003904978205739380623481723661641396883678700531176998074009090944130064383792213854734101182591054606781359574544120823690362905523398270489939706547990345246231530733316646360394579721797156381054207414615333776383945252214100458075195770993971636731892198913293107313263096802400950280001995889600269261084002962194522369348371580184194201319826916320073496756736378234176527727677896098180012125139057850531341929674855173384488699967535868594673470466436155672157436157446615623094626238560694456848398206751930925254978950059694877328019092454478343535457958785859310484
...Trash Dove
#ctf #misc #stegnoFind the flag that has been going viral all over Facebook.
- Flag Format: /flag{.+}/
Provided media Provided media2 – Easier
Solution
We try to inspect the file to see what it is.
$ file media
media: ASCII text, with very long lines, with CR...
Timing Attack
#ctf #introductory #misc #webOnce upon a time, there was a programmer. His name was Anshul. He did not know how to work with passwords. His friend Animesh took this opportunity to do jugaad and guess the passwords so that he is able to order a lot of free shirts from MustCapture...
...I Love Emilia
#Emilia #ctf #misc #webCar Brand is a nice person. He wants to declare his love to his girl. Unfortunately, another trash girl also likes him. In order to announce to the trash girl about his feelings, he decides to put his confession into irrefutable words, and send it...
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