Hello, are you still awake? I want to ask you some questions.
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it's an executable for unix. You need a VM or ssh on a free unix server like these http://blinkenshell.org/wiki/Start if you want to work with windows.
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Ah, I get it, an unix exe that doesn't have file extension like in windows. Thanks. I will work from that up!!
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I got a question (really, they're more than one :P) which debugger do you recommend?? I want to go step by step into the program, previous puzzle I was fighting with gdb and dissy, but is there something like Ollydbg for linux?? Or other lightweight alternative to step through the dissassembled code. Sorry for my lame English :p and my constant questions.
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gdb is pretty much the standard for Linux. But stock gdb is... lacking. Try using https://github.com/longld/peda
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Thank you Lense! I will try it. Gdb is very rough, felt like I was questioning a stubborn crime suspect.
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Help me Kona-chan!! I can't help to remember that scene when everybody touches the door knob and get a static shock except Konata xD, and that resounding "NO" she says. Enough commenting , I'm gone to sleep, hope to get working on this puzzle tomorrow.
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So, in order to solve this, it's necessary to have a Virtual Machine with Linux on it to make the script run? Because it will take me a while to download the entire OS.
Thanks for doing this, this will be a challenge (if I manage to solve it)
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you can ssh on unix servers like these if you don't want to download
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Eh... There are a lot of heavy requirements to be able to use that SSH, the point is to use it to solve the puzzle, not to solve it later and anger people once I finish.
Is the VM an alternative, still?
Thanks for the answer.
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ofc, I recommend this Kali Linux (Click on "Prebuilt Kali Linux VirtualBox Images") + VirtualBox
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Thank you, will download.
This puzzle will take lots of hints to pull it off! Hopefully, it will be fun in the end!
How long are you putting this puzzle up?
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It would be fun to set up one of these using the JavaScript x86 emulator.
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also I forgot to tell you these but if you're wondering how to show the error code I'm talking about. Use the command "echo $?" After executing the program
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I think this would be interesting to do, but i have no idea what i'm doing xD
I just get core dump when trying to get the file path.
Any tips for a noob?
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What do you mean by getting the file path?
It should seg fault of input too large files. Sounds like you're just inputting random files.
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I am. Was trying to understand where in the code i was.
Can i add you?
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Steam is down for me in mobile. For your question: http://www.steamgifts.com/go/comment/VSuBnuC. I'm going offline for now
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Hey, I'm having trouble submitting my files to www.Youhaventsolvedanythingyet.com please fix
(bump for solved)
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Heya, I'll fix the problem when I get back home later. Feel free to enter on the final giveaway if you solved it
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Lense, thanks again for the help man! I'm here for the games of course, but also for the knowledge and the practice. Hope there are more puzzles like this and more guidelines from people who knows what they're doing and not stumbling in the dark like myself :P
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Gotta ask again since you didn't join the 2nd game. Only the 3rd file was broken right? 2nd was fine?
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Only *nix? At mac terminal cannot execute binary file :(
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Thank you! I will find *nix bash :) This is ELF app :)
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Bumping for file #1 uploaded
EDIT: I can already see that even if the file passed the first check, it's going to fail on the last one... This is going to be a long week
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Bump and Current stats:
1st file: 7 solvers
2nd file: 4 solvers
3rd file: 3 solvers
4th file: 3 solvers
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I know that I don't know c/c++ :(
I know that is functions in binary, but not understood that I can do with it.
But for now I know 14.04 Ubuntu only x64 and without x86 libs.
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Jesus christ, I've been searching for this puzzle for two days now, but I forgot thread title, your username, just everything. I will probably not be able to solve it but I will damn try, because I really wanna win Hyper Light Drifter and I never win wishlisted games, no matter how good the odds are, so I have to get back to puzzle solving for giveaways! Thanks in advance! :)
Edit: Err... Windows asks me what programm I should run the file with... I can't even get it started, fuck my life.
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Making a puzzle only for linux users is not nice, you know. And by the way, making people to run executables for entering giveaways is even less nice. Anyone concerned about security would not run binaries from unknown source.
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You could run it in a VM... of course that will also reduce the number of entrants.
But really, the set of people who are going to be able to solve it overlaps quite a bit with the set of people who are competent in UN*X.
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To be fair, I can vouch that the program does have exploitable security flaws.
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Most of the "solving" is done by looking at the program, not by running it. You could actually solve it using only Windows tools and without running the original file at all :)
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Can't you give more tips for the noobs like me?
I'm still blocked on the second file :(
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BUMP FOR PSA
There are 2 unconfirmed entries for the first file. If you're name is in the list, please reupload a valid file with a discernible name. If you just pressed upload and the script spit the giveaway link, you just got lucky and you're entry on the first giveaway is invalid.
Current stats:
1st file: 10 solvers (valid entries)
2nd file: 7 solvers
3rd file: 5 solvers
4th file: 5 solvers
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You didn't say which ones are suspect. Do you just want everyone to reupload?
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Today I learned something new. Thank you for the puzzle :)
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Solution Here: https://www.youtube.com/watch?v=7e9gkk-YW64
I'm keeping the website up for submission if you want to try it yourself
A lot of people has expressed that the first puzzle that is still on going: http://www.steamgifts.com/discussion/ld23b/puzzle-reverse-engineering-101-mad-max-no-level-restrictions is too easy.
Here's the real deal now. I want you to make this program http://puu.sh/o44YS/0d587e1b0a print "hello world" just by supplying it with the required 4 files. No Patching, No modifying variables in debugger to force it to print hello world, just old school reverse engineering.
To check that you really did it the right way, I want you to upload the 4 files. Here are the links to upload them depending on the error code that you got:
Error 0-3: www.Youhaventsolvedanythingyet.com
Error 5: https://script.google.com/macros/s/AKfycbwIkagaLyC4kHn83m1ioMxVnoWlcWjC53hhYPtFNFzuwG90Gec/exec
Error 6: https://script.google.com/macros/s/AKfycbzBL1uXnP_tQot0qkIqJPVlw8r3c5kXtUYg3uak2WUYdwBlvkvy/exec
Error 7: https://script.google.com/macros/s/AKfycbzcVnVVBWSJFeiVKAc8looqfre9OZinEYWQXzXzgdrwUHN3k9M/exec
Hello world: https://script.google.com/macros/s/AKfycbzCW38nqibZLs1HrrCHJvuNm1UbyYIOFllx50PSd11ndGnuwLN5/exec
No need for password this time, those upload pages will give you the giveaway link if you supplied a valid input.
Here's the game list depending on how much you have solved:
First file: ICY
Second file: Celestian Tales: Old North
Third file: TASTEE: Lethal Tactics
Fourth FileHyper Light Drifter
FAQ:
Q: When I run the program, nothing happens. Doesn't even show the error code!
A: Type "echo $?"
Q: How do I type non-printable code?
A: Use echo -n -e to generate those files I.E.: "echo -n -e "\x32\x32\x32" > in1"
Q: echo -n -e just prints "-e \x32\x32\x32" in the file?
A: Use bash first then type that command if that is happening
Q: Last guard check is impossible! No one can't enter that Hyper Light Drifter giveaway. Fook u
A: Nop, It's possible ;)
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