arxenix

class QSet:
    def __init__(self, input=None):
        self.__repr__=self.__str__
        self.qset = {}
        if input!=None:
            for item in input:
                self.add_item(item)
    def add_item(self, item, amt=1):
        if item in self.qset:
            self.qset[item]+=amt

arxenix

import requests
from z3 import *

# xor_shift_128_plus algorithm
def xs128p(state0, state1):
    s1 = state0 & 0xFFFFFFFFFFFFFFFF
    s0 = state1 & 0xFFFFFFFFFFFFFFFF
    s1 ^= (s1 << 23) & 0xFFFFFFFFFFFFFFFF
    s1 ^= (s1 >> 17) & 0xFFFFFFFFFFFFFFFF
    s1 ^= s0 & 0xFFFFFFFFFFFFFFFF

arxenix

var http = require('http');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var crypto = require('crypto');

var secrets = require('./secrets');

var app = express();

arxenix

I recovered some RSA parameters. Can you decrypt the message?

c = 293430917376708381243824815247228063605104303548720758108780880727974339086036691092136736806182713047603694090694712685069524383098129303183298249981051498714383399595430658107400768559066065231114145553134453396428041946588586604081230659780431638898871362957635105901091871385165354213544323931410599944377781013715195511539451275610913318909140275602013631077670399937733517949344579963174235423101450272762052806595645694091546721802246723616268373048438591
n = 1209143407476550975641959824312993703149920344437422193042293131572745298662696284279928622412441255652391493241414170537319784298367821654726781089600780498369402167443363862621886943970468819656731959468058528787895569936536904387979815183897568006750131879851263753496120098205966442010445601534305483783759226510120860633770814540166419495817666312474484061885435295870436055727722073738662516644186716532891328742452198364825809508602208516407566578212780807
e = 65537

arxenix

var http = require('http');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var crypto = require('crypto');

var secrets = require('./secrets');

var app = express();

arxenix

#/usr/bin/env python
from Crypto.Cipher.AES import AESCipher

import SocketServer,threading,os,time
import signal

from secret2 import FLAG, KEY

PORT = 7765

arxenix

Your friend sent you an RSA encrypted message, but all you have is the public key. 
Can you decrypt it?
N= 783949009604721773062671385703560162276953281000402407136755498403805325573871739224718132041263674805095745730360032456390771004653528645418609485611285972347768801288078405739359537027510763093101466339010391468526065882213132642606727066648907089863555137412937880587640902191876372019617661767541914486532426154355941876213379704860899070512163415028956242773211194938669142126831249205301582117092914150610138627549493093118832692994906018076043123209714003367654405914750914105794398885868868138989303423588666001189801604514215795662056626995322594204045330812833643921001621378187921795314603685153801858317274843037788908177180533949587026647728428640595415673082608586182157804859771910060725906999656669264071344413847948322035342776831739326498872673499644746067588205954665756088233284157872340201635503233214321917542354622127013889
e= 65537
c= 7792045924207499503793994447927048053324455636069539411832

arxenix

Problem updated on 7/17/16 @ 8PM EST - fixed values
I RSA encrypted the same message 3 different times with the same exponent. Can you decrypt it?

N1:79608037716527910392060670707842954224114341083822168077002144855358998405023007345791355970838437273653492726857398313047195654933011803740498167538754807659255275632647165202835846338059572102420992692073303341392512490988413552501419357400503232190597741120726276250753866130679586474440949586692852365179
C1:34217065803425349356447652842993191079705593197469002356250751196039765990549766822180265723173964726087016890980051189787233837925650902081362222218365748633591895514369317316450142279676583079298758397507023942377316646300547978234729578678310028626408502085957725408232168284955403531891866121828640919987

N2:58002222048141232855465758799795991260844167004589249261667816662245991955274977287082142794911572989261856156040536668553365838145271642812811609687362700843661481653274617983708937827484947856793885821586285570844274545385852401777678956217807768

arxenix

abctf{tugger_waifed}:fecf893a1a0d5fa680fb5271f6e86abfdb8d4fa057cce26249b3d18731de479c
abctf{sarsar_clags_calic_spaer_miro_filii_piers}:e7bdff77bfb478a6cee3a267c7d6ab696cc414a1cc949f8776590960de8aa3a50ba41028803e1dd99600819c4fc07b66
abctf{libris_yarded}:3187dfcacb1a1c37b0f23cfb8759b60441a9b707b891f1b1454f2b4b0488cee4
abctf{adhaka_hanced_peags_nimbus_sucken_atabek_grands}:f0c678f4c3a1d36ae6d64a95f015ac231c6c6080c023fd7c52e649e3ab0a46f4e80f0010814d925ed9c226ff73d0d9c82f957d6be3c5eef7701b724ddcd74254
abctf{bagass_unshy_con_booed_thitsi_vagrom_ola}:110c7f959acf0a16498061fed8347ab8b8f95de482d9cdc10ff9b9ff5e50cb3851ed071bbe953def278dd6f6e2ae339c
abctf{doni_hakea_mexico_stew_enodal_pod}:a1e3e0f1a6669cdee47c901bf08016dd046935f85f4b44a9f07fdf61ac3124fea4587e0b86aa2b91878a2c4b88a676ef
abctf{extant_chimer_bart}:60357794658ff43cf868d62bc0eca6e892bb5067e5dcb4d71fe17f293fa6734e
abctf{skis_envies_shrogs_birder_irone_pickle_bogy}:02de2eb084744ef77998b7cf91884e3104d55403e5821919936204df132bdb9cf61f3cc7e7ade2008c23b01016fd58bc1

arxenix

Keybase proof

I hereby claim:

• I am bobacadodl on github.
• I am bobacadodl (https://keybase.io/bobacadodl) on keybase.
• I have a public key whose fingerprint is 6884 5C72 30CD A5C9 AA3B 4EC3 8043 DDFA 4EA3 F64E

To claim this, I am signing this object: