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thinking... but have no idea yet :(

This is a corrupted zip file, can't recover it :(

хуйня ебаная

Sorry, it seems GitHub has corrupted this file. Please use this link instead: https://gist.github.com/zaccharles/35bd87b1ce7655f35126ae38b8bd631b

@igerasymchuk

@zaccharles вы что шутите? я сутки убил на ваш архив чтоб узнать что он поломан?

@zaccharles, 2 sleepless nights with zip format documentation and hex editor...

@mkramskoy same thing :( @zaccharles my first comment here 22 hours ago. I spent many hours to fix this zip :( installed a lot of zip repairs, hex editor and more... and now I'm only third with correct answer :( life is unfair...

@eXhausted @mkramskoy @igerasymchuk

I'm sorry guys, but here's your second chance to not waste your work. I used a library to create the original Gist. Obviously, it didn't work as expected.

The broken ZIP has 898 bytes. The working one has 564 bytes. I think all the data is still there. The first one to prove it, and provide a script which takes the broken ZIP and produces the working ZIP, will get guaranteed a ticket. If this is possible, I imagine the script will work on any ZIP that has been broken in the same way. If it's not possible, maybe you can prove it's not.

This is optional, and in any case, you're all still in the draw for the 3 remaining tickets (2, if someone gets this right).

Here's a hint. I used this library: https://github.com/defunkt/gist

When I'm trying to upload the correct zip file using this "gist" lib I get this

$ gist last-steps-correct
Error: Got Net::HTTPBadRequest from gist: {"message":"Problems parsing JSON","documentation_url":"https://developer.github.com/v3/gists/#create-a-gist"}

It works with other text files thought, like this
And the difference between correct and corrupted bin is 548 bytes, which isn't recoverable. So I can't replicate the problem and also can't recover it by removing garbage. I can dig into the library of course, but this game proved to be not very fun, so I guess the best decision is to exit from it.

@igerasymchuk I was on your hex editing stage two days ago, like 3 or 5 hours from this quiz was up :)

Looks like it puts the file into JSON string and it brakes everything. Have no idea how you managed to upload it using this tool :D

Please tag me when you comment to me. Because this is an anonymous gist I don't get notifications :(

C:\Temp\comp>gist last-steps
https://gist.github.com/c6b26792847aed4f4475c6b6d98c30a5

C:\Temp\comp>ruby --version
ruby 1.9.3p194 (2012-04-20) [i386-mingw32]

^ @mkramskoy

@igerasymchuk I was on your hex editing stage two days ago, like 3 or 5 hours from this quiz was up :)
@mkramskoy you have more patience than me :) I almost gave up

@zaccharles Ok, I created simple console converter. It can convert "wrong" file from "normal" one. I've tested it on "last-steps" files. The file size and content are same after conversion. The problem is in ASCII8bit to UTF8 conversion. Each symbol with dec code 128 and higher converted to 2bytes. Unfortunately I have no idea how to determine wrong bytes and convert it back :( I guess that this task has no solution. Console app https://dl.dropboxusercontent.com/u/933318/challenge.exe Simply add fileName as a parameter and program creates foo.txt file

C# code
class Program
{
static void Main(string[] args)
{
if (args.Length > 0)
{
var fileName = args[0];
byte[] bytes = File.ReadAllBytes(fileName);
byte[] arrBytes = Encoding.UTF8.GetBytes(ASCII8ToString(bytes));
File.WriteAllBytes("foo.txt", arrBytes);
}
else Console.Write("File not found!");
}
static string ASCII8ToString(byte[] ASCIIData)
{
var e = Encoding.GetEncoding("437");
return e.GetString(ASCIIData);
}
}

@igerasymchuk it does have a solution and you're very close.

@zaccharles Finally I fix it (with a little help of my friend :) The new converter is ready to download https://dl.dropboxusercontent.com/u/933318/gistfix.exe

    static void Main(string[] args)
    {
        if (args.Length > 0)
        {
            var fileName = args[0];
            var content = File.ReadAllText(fileName);
            var encoding = Encoding.GetEncoding(437);
            var bytes = encoding.GetBytes(content);
            File.WriteAllBytes("repaired.zip", bytes);
        }
        else Console.Write("File not found!");
    }

Woohoo! It's correct :D

@zaccharles @igerasymchuk try another archive :)