Oct 25
7 – python jail You are surrounded by zombies. You heard there’s a safe house nearby, but climbing fences is hard with a beer belly. Thank god, there’s another surviver over there. “Hey! Help me!”, you shout. He just laughs and shakes you off the fence. Asshole. Later, you see his dead body lying in …
Oct 25
4 – Reduced Security Agency Some of our guys broke into the Reduced Security Agency and stole the source of their highly secure login system. Unfortunately no one of them made it uninfected back and so we only have a part of the source. Now it’s your turn to break their system and login to …
May 01
After examining some code retrieved by our operative we are unsure whether it was written by an evil genius or a google employee. We will let you decide. Summary: linux x64 binary, obfuscated xor
May 01
We recently intercepted a plethora of robot transmissions but they are all encrypted with some strange scheme we just can’t quite figure out. Can you crack it? Summary: small public exponent: 3
May 01
We found the source code for this robot encryption service, except the key was redacted from it. The service is currently running at 23.21.15.166:4433 Summary: IV predict, byte-by-byte bruteforce
May 01
Our spies intercepted communications and a file between 5 of the top 10 robo-generals and their nuclear bomb server. We must recover the final launch code from the 5 robo-general’s secret codes, so we can stop the detonation! Summary: Shamir’s Secret Sharing
Mar 26
Our spy thinks that Sciteek staff is aware about the mole inside their building. He is trying to read a private file named “sciteek-private.txt” located at sciteek.nuitduhack.com:4005. Please find the .ndh attached, if you are sucessfull, reply with a message entitled “complex remote service”. Of course, your efforts will be rewarded with $2500. Maybe you …
Mar 26
Meanwhile, we got fresh news from our mystery guy. He came along with an intersting binary file. It just looks like an executable, but it is not ELF nor anything our experts would happen to know or recognize. Some of them we quite impressed by your skills and do think you may be able to …
Mar 26
Hopefully, we succeeded to spy some wireless communications around Sciteek building, our technical staff has attached the capture file, will you be able to exploit it? We hope that some valuable files were exchanged during the capture. Please entitle your reply “captured file”, as usual. By the way, your account has been credited with $1000. …
Mar 26
Our anonymous guy managed to get access to another bunch of files. We also need to get as much information as possible about the file itself. If you succeed, you will be rewarded with $2500 for the ndh file. executable2.ndh NDH Virtual Machine Summary: VM in the NDH VM, crackme
Feb 26
Here we are given ssh credentials where we need to exploit the binary. Summary: compose file to make program jump to stack.
Feb 26
This web challenge is again about uploading. Our aim was to get shell. Summary: upload php shell, read the key.
Feb 26
This challenge is a web service where one can upload mp3 files and listen to them. Our aim is to get admin’s song. Summary: sql injection
Feb 13
SSH : 208.64.122.235 guest:guest binary Category: exploitation Summary: format string bug, ASLR and NX
