SHX5 : rev200-lil_arm

Sniffing a public network we found a hash traveling in plain text. With a little observation we discovered that it was transmitted by a device that…

SHX5 : rev400-again

Can you reverse it and find the flag? Format: shellter{flag_here} *Download the binary at shellterlabs.com Solution This is a classic keygen challenge, but…

Nullcon HackIM 2017 - prog300-jio-geo_challenge

Do you think you can win this Jio-Geo challenge ? 52.90.9.177:33333 Solution Well, wtf is Jio-geo? i don't know.. search engine doesn't help.…

Shellter carnaval hacking 2017 : coding200-give_life_to_the_letters

Instructions on the attached file README.md Solution Well, this is a classic coding challenge, one of my favorite from this contest! We've received a .7z…

BSidesSF2017 : Zumbo 1 2 and 3

Welcome to ZUMBOCOM....you can do anything at ZUMBOCOM. Three flags await. Can you find them? URL: http://zumbo-8ac445b1.ctf.bsidessf.net Flag 1 solution The…

AlexCTF2017 : rev100-c++_is_awesome

They say C++ is complex, prove them wrong! Solution As always, started by checking binary details/protections.. intrd@inix:~/ctf/alexctf2k17/rev100$ file re2 re2: ELF…

AlexCTF2017 : crypto200-poor_rsa

This time Fady decided to go for modern cryptography implementations, He is fascinated with choosing his own prime numbers, so he picked up RSA once more.…

AlexCTF2017 : crypto150-what_is_this_encryption

Fady assumed this time that you will be so n00b to tell what encryption he is using he send the following note to his friend in…

AlexCTF2017 : crypto100-many_time_secrets

CR2: Many time secrets This time Fady learned from his old mistake and decided to use onetime pad(OTP) as his encryption technique, but he never…

SHX2 : net100-get_out

The hardest was to get credentials, but now we can not make use of them. user: kevin password: k3vin@pass To start your challenge environment, please…

SHX2 : crypto100-ancient_code

We found this strange symbol. Digging for a little more, we also found a paper that can help translate it. Can you help us? Format: shellter{…

INS17 insomini'hack : web50-smarttomcat

Normal, regular cats are so 2000 and late, I decided to buy this allegedly smart tomcat robot Now the damn thing has attacked me and flew…

INS17 insomini'hack : crypto50-cryptoquizz

Hello, young hacker. Are you ready to fight rogue machines ? Now, you'll have to prove us that you are a genuine cryptographer. (created by cryptopathe) Running…

3DSCTF2016 : pwn200-not_the_same

A lamer friend ask for your help to exploit a new bin. Can you help him? Send to 54.175.35.248 8006 PS: You dont…

SHX1 : pwn300-bubble_bass

Bubble Bass has a vulnerable service. Can you exploit it and read the flag.txt file? Server: 34.197.58.21 Port: 9997 Category: Potent PwnablesPoints:…

3DSCTF 2016 : prog200-different_and_notorious_alignment

Access the server in 209.190.1.131:9002 Same situation we encountered at the prog100-alien_dna1 challenge. But this time it's not a simple difference…

3DSCTF 2016 : prog100-alien_dna1

Access the server in 54.175.35.248:8001 Solution No secret here, we need to figure out the logic behind the correct answer and send…

33C3CTF : web200-pay2win

Do you have enough money to buy the flag? http://78.46.224.78:5000/ Solution The web application list two products to buy.. Cheap Which…

3DSCTF 2016 : pwn200-getstarted

get_started() - A very proud programmer hid a flag in his binary. Can you extract it? Send to 54.175.35.248 8005 Flag format:…

3DSCTF 2016 : web200-mapos

MapOs - I just overheard a conversation from the company next door to MapOs and found out that their main system is being updated due to…

3DSCTF 2016 : stego300-simone_entao_e_natal

Simone - Entao e natal - The end of the year has come... and along with him comes these things of always in Brazil... Simone, Roberto…

3DSCTF 2016 : misc100-base3200

base3200 - One more message sent by R3cursiv3 Hacker was intercepted. You challenge is to decode the message and reveal the flag. The recovered message is…

3DSCTF 2016 : crypto100-cryptomaster

John says that he is the master of his personal server. He created a script that talks to him as if it was his disciple. The…

3DSCTF 2016 : rev100-warmup

Find the flag inside the binary. Flag format: "3DS{flag}" Solution Received a file rev1.rar w/ a binary(rev1_merces) ELF 32bit Strings returned something.…

3DSCTF 2016 : crypto100-hotsun

Surfing in the Shallowweb, we have discovered a new algorithm that promises to be the newest substituition cipher. The algorithm to encrypt works as following: the…

ClimbU : Dynamic and open source live scoring for comps

ClimbU Livescoring is a multiplatform application that allows anyone to manage/display real-time scores. Originally developed for climbing competition(marathon) but can be easily adapted to…

CryptoWall : Ransomware, métodos de recuperação dos arquivos sequestrados [pt_BR]

Há algum tempo, um amigo solicitou ajuda para entender como um computador de sua empresa, isolado pelo Firewall + AV corporativo havia sido infectado por um Ransomware,…

Powerful USB stick : Grub2 booting Mint, Tails and Hirens + (storages NTFS and ext4 LUKS encrypted)

A perfect USB stick for me need in addition to storing files, be a powerful tool for all situations. Thinking about it, I used the GRUB2…

Kdenlive : The best open source video editor, fixing crashs on Linux Mint

Today I've spent some time testing the Top 3 Linux Open Source video (timeline based) editors. Using a box with Linux Mint 17.2 [xfce4].. Started…

SQLite : DBIntrd - Simple PHP framework for SQLite3 databases

Tired of spending a lot of time manually creating PHP objects and methods(get/set/save..) to connect a SQLite database? DBIntrd is magic way to…

Mech keyboard : CM Quick Fire TK - AutoHotKey, Numpad navigation(home, pgup, arrows) w/ numlock enabled

Bought this amazing mechanical keyboard recently. Chose this model precisely because it is compact, but ended up into one inconvenient. The NUMLK needs to be disabled…

Bitcoin : Raspberry Pi - Bitcoin standalone chart monitor

With this method you will be able to display BitcoinWisdom data or even your custom Tradingview chart into a auto-bootable fullscreen minimalist linux device. The chart…

Bitcoin : Guia definitivo, parte 2/3: Experiências e técnicas de mineração de criptomoedas [pt_BR]

Devido à dificuldade de mineração sempre crescente do Bitcoin, esta tarefa tem se tornado uma batalha de gigantes, acabando sendo inviável até mesmo para quem esteja…

Bitcoin : Guia definitivo, parte 1/3: Ideologia e estrutura da rede [pt_BR]

Bitcoin é uma moeda digital baseada numa tecnologia que tem o potencial de mudar a forma como realizamos transações monetárias, e sem dúvidas causar um impacto…

Bitcoin : HAL 10K - Bitcoin PHP trading & helper bot

This project are DEPRECATED ..and moved to a closed source project.. https://github.com/intrd/bitcoin-tofybot Official post -> HAL 10K @ PHP Bitcoin trading & helper…