From 9f90dfed95e90590a77138bd07a2a1759059fff2 Mon Sep 17 00:00:00 2001 From: Valentin VERDIER Date: Tue, 28 Feb 2023 14:38:07 +0100 Subject: [PATCH] nouveaux challenges --- .../otp-erreur-implementation/break.py | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 rootme/challenges/cryptanalyse/otp-erreur-implementation/break.py diff --git a/rootme/challenges/cryptanalyse/otp-erreur-implementation/break.py b/rootme/challenges/cryptanalyse/otp-erreur-implementation/break.py new file mode 100644 index 0000000..7dfa31f --- /dev/null +++ b/rootme/challenges/cryptanalyse/otp-erreur-implementation/break.py @@ -0,0 +1,27 @@ +#!/usr/bin/python3 + +import socket +import base64 + +conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM) +conn.connect(("challenge01.root-me.org", 51009)) + +stat = [None]*42 +for i in range(42): + stat[i] = [0]*256 + +conn.recv(2048).decode() + +for k in range(4000): + conn.send(b'flag\n') + b64cipher = conn.recv(2048).decode()[17:73] + cipher = base64.b64decode(b64cipher) + for i in range(42): + stat[i][cipher[i]] += 1 +conn.close() + +for i in range(42): + for j in range(256): + if stat[i][j] == 0: + print(chr(j), end="") +print("")