We managed to get all the data to incriminate our CEO for selling companysecrets. Can you please help us and give us the secret data that he has leaked?

Author: stackola

One of my drives failed and I need help recovering all my files. As far as I know the persons who have set up my PC used something like Reusing All of Internal Disks.

Can you bypass the CSP? Try to read /csp-one-flag as admin, all payloads submitted here will be sent to the admin.

It's not just leprechauns that hide their gold at the end of the rainbow, elves hide their candy there too.

OTW 2019 - Easter egg #2

OTW 2019 - Easter egg #2

Can you design your own self-replicating toy? Service: nc 3.93.128.89 1214Download: chal.c

One of Santa's Little Helpers received an unusual Christmas wish, a copy of the yet to be released Deus Hex game. All they managed to find were fragments from the dialogue system. Can you decode the last one?

On the 8th day of advent @rchpmv gave to meee, a c# pwnable with no bi-na-ryyy

I ran this program but it never finished... maybe my computer is too slow. Maybe yours is faster?

Santa has been abusing his power and is union busting us elves. Any elves caught participating in union related activities have been put on a naughty list, if you can get me off the list I will give you a flag.

We just rescued an elf that was captured by The Grinch for his cruel genetic experiments. But we were late, the poor elf was already mutated. Could you help us restore the elf's genes?- Service: nc 3.93.128.89 1206

Santa's little helpers are notoriously good at solving Sudoku puzzles, so they made a special variant...

'Moo may represent an idea, but only the cow knows.' - Mason Cooley

Santa is stranded on the Christmas Islands and is desperately trying to reach his trusty companion via cellphone. We've bugged the device with a primitive keylogger and have been able to decode some of the SMS, but couldn't make much sense of the last one. Can you

Fox! Fox! Burning bright! In the forests of the night!Hint: $ break *0x7c00

Can you forge Santa's signature?

First we asked you to solve a sudoku, now we want you to make one.

Put on your aprons! It's time for a tradition

Just another heap challenge.

day 7 - Naughty or Nice V2

The oracle knows all, and it's kinda chatty. Is it telling you something?

You ever just get a craving for pancakes?

nc chal.tuctf.com 30503

Cute animals

Just what the world needs... another vulnerable FTP server. Have fun.

nc chal.tuctf.com 30500

A true cipher buffet lies ahead.

nc chal.tuctf.com 30101

Ophelia FlagDeCotour just won a Hugo award! (Alongside hundreds of other people...) Go give her some congratulations.

Something's blocking my flag from this file...

Ogres are like files -- they have layers!

Sometimes you need a little Star Wars in your life to come across the flag.

Time to go back to the basics... you remember those, right?

Didn't get an alien in Area51, but I found this...

Crypto has been around forever. Does this challenge go on forever? Let us know in the comments below or find the flag to prove us wrong.

Somethings are meant to be broken

One small step for hacker's, one giant leap for pwning kind.

Same concept, more bytes.

Enter the belly of the beast and emerge victorious. nc chal.tuctf.com 30502

On the first leg of the journey, I was looking at all the life, there were plants and hills and rocks and things, there was java and mugs and caffeine.

We all know Black Friday is the time for shopping. Can you find us a flag on this online store?

Gotta go fast

We've managed to gather the details in the given file. We need a professional cryptographer to decipher the message. Are you up to the task?

If at first you don't login, maybe back up.

Gonna have to get crafty with this one.

Interesting login page, think you can crack it?

There are so many tests going on right now, why don't take a deep breath and list them out before you forget one?

This challenge is an open door; show us you know how to find the key.

We like the simple things in life -- this file went back to the basics!

Our competitors are recruiting delivery guys. I heard they were using a very weird task to test the applicants. See what you can do about it.

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