BSsidesSF CTF 2017 "delphi-status" crypto 250
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# From BsidesSF CTF 2017 | |
import itertools | |
import requests | |
import sys | |
from binascii import hexlify, unhexlify | |
uh = unhexlify | |
h = hexlify | |
ct = uh("928afe4ffecdea9ed22847dcd2d47d674921a12fbdc42d3150d30e13b65d36b46677f7735d09b572b4df1ce68100bf8893fb4c919f6cddda087691132873b93de0d2cac3ff374d7f8db3524dbf91655b0111b05883c16f5e23a898e923174dd05f7ef949dc3bdd145c698c907c4a411d") | |
host = "http://delphi-status-e606c556.ctf.bsidessf.net" | |
r = requests.get("{}/execute/{}".format(host, h(ct).decode())) | |
print(r.content) | |
print(h(r.content)) | |
def xorstring(s1, s2): | |
return bytes([(a ^ b) for a, b in zip(s1, s2)]) | |
ct = uh("fe9b534deb6fba8c33d22ebe0cdfa53ebc108fd1b6f649d93ee5b1ba0ee80c39") | |
iv = ct[:5] | |
iv = xorstring(b"netst", iv) | |
iv = xorstring(b"pg *;", iv) | |
ct = iv + ct[5:] | |
print(len(ct)) | |
r = requests.get("{}/execute/{}".format(host, h(ct).decode())) | |
print(r.content) | |
print(h(r.content)) |
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