public async Task Check(string host)
{
var client = new AsyncHttpClient(GetBaseUri(host), true);
var result = await client.DoRequestAsync(HttpMethod.Get, "/", null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), "get / failed");
}
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
var query = "?query=" + WebUtility.UrlEncode(RndText.RandomWord(RndUtil.GetInt(2, 10)));
result = await client.DoRequestAsync(HttpMethod.Get, ApiNotesSearch + query, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiNotesSearch} failed");
}
var notes = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <List <Note> >(result.BodyAsString));
if (notes == default)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiNotesSearch} response");
}
await Console.Error.WriteLineAsync($"found '{notes.Count}' notes by query '{query}'").ConfigureAwait(false);
}
public async Task Get(string host, string id, string flag, int vuln)
{
var parts = id.Split(':');
if (parts.Length != 3)
{
throw new Exception($"Invalid flag id '{id}'");
}
var login = parts[0];
var pass = parts[1];
var cookie = Encoding.UTF8.GetString(Convert.FromBase64String(parts[2]));
var client = new AsyncHttpClient(GetBaseUri(host), true);
var result = await client.DoRequestAsync(HttpMethod.Get, ApiScoreboard, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiScoreboard} failed");
}
var solutions = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <List <Solution> >(result.BodyAsString));
if (solutions == default || solutions.Count == 0 || solutions.All(sln => sln.Login != login))
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiScoreboard} response");
}
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
client = new AsyncHttpClient(GetBaseUri(host), true);
client.Cookies.SetCookies(GetBaseUri(host), cookie);
result = await client.DoRequestAsync(HttpMethod.Get, ApiAuth, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiAuth} failed");
}
var user = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <User>(result.BodyAsString));
if (user == default || user.Login != login || user.Bio != flag)
{
throw new CheckerException(ExitCode.CORRUPT, "flag not found");
}
}
public async Task <string> Put(string host, string id, string flag, int vuln)
{
var client = new AsyncHttpClient(GetBaseUri(host), true);
var result = await client.DoRequestAsync(HttpMethod.Get, ApiGenerate, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiGenerate} failed");
}
var rubik = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <GeneratedRubik>(result.BodyAsString));
if (rubik == default)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiGenerate} response");
}
await Console.Error.WriteLineAsync($"rubik '{rubik.Rubik}', signed '{rubik.Value}'").ConfigureAwait(false);
string solution;
try
{
solution = DoIt.TryOrDefault(() => SolveHelper.ConvertOutputSolution(RubikSolver.FindSolution(SolveHelper.ConvertInputCube(rubik.Rubik), 32, 10000)));
}
catch (RubikSolveException e)
{
await Console.Error.WriteLineAsync(e.Message).ConfigureAwait(false);
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiGenerate} response: unsolvable puzzle");
}
await Console.Error.WriteLineAsync($"solution '{solution}'").ConfigureAwait(false);
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
var login = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
var pass = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
await Console.Error.WriteLineAsync($"name '{login}', pass '{pass}', bio '{flag}'").ConfigureAwait(false);
var query = $"?login={WebUtility.UrlEncode(login)}&pass={WebUtility.UrlEncode(pass)}&bio={WebUtility.UrlEncode(flag)}&puzzle={WebUtility.UrlEncode(rubik.Value)}&solution={WebUtility.UrlEncode(solution)}";
result = await client.DoRequestAsync(HttpMethod.Post, ApiSolve + query, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"post {ApiSolve} failed");
}
var sln = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <Solution>(result.BodyAsString));
if (sln == default || sln.Login != login || sln.MovesCount != solution.Length)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiSolve} response");
}
await Console.Error.WriteLineAsync($"solution '{solution}'").ConfigureAwait(false);
var cookie = client.Cookies.GetCookieHeader(GetBaseUri(host));
await Console.Error.WriteLineAsync($"cookie '{cookie}'").ConfigureAwait(false);
if (string.IsNullOrEmpty(cookie) || cookie.Length > 512)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"invalid {ApiSolve} response: cookies");
}
return($"{login}:{pass}:{Convert.ToBase64String(Encoding.UTF8.GetBytes(cookie))}");
}
public async Task Check(string host)
{
var client = new AsyncHttpClient(GetBaseUri(host), true);
var result = await client.DoRequestAsync(HttpMethod.Get, "/", null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), "get / failed");
}
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
result = await client.DoRequestAsync(HttpMethod.Get, ApiGenerate, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiGenerate} failed");
}
var rubik = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <GeneratedRubik>(result.BodyAsString));
if (rubik == default)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiGenerate} response");
}
await Console.Error.WriteLineAsync($"rubik '{rubik.Rubik}', signed '{rubik.Value}'").ConfigureAwait(false);
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
var login = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
var pass = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
var flag = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
await Console.Error.WriteLineAsync($"name '{login}', pass '{pass}', bio '{flag}'").ConfigureAwait(false);
var solution = RndRubik.RandomSolution(MinRandomSolutionLength, MaxRandomSolutionLength);
var query = $"?login={WebUtility.UrlEncode(login)}&pass={WebUtility.UrlEncode(pass)}&bio={WebUtility.UrlEncode(flag)}&puzzle={WebUtility.UrlEncode(rubik.Value)}&solution={WebUtility.UrlEncode(solution)}";
result = await client.DoRequestAsync(HttpMethod.Post, ApiSolve + query, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != (HttpStatusCode)418)
{
throw new CheckerException(result.StatusCode == HttpStatusCode.OK ? ExitCode.MUMBLE : result.StatusCode.ToExitCode(), $"invalid {ApiSolve} response");
}
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
result = await client.DoRequestAsync(HttpMethod.Get, ApiAuth, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiAuth} failed");
}
var user = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <User>(result.BodyAsString));
if (user == default || user.Login != login || user.Bio != flag)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiAuth} response");
}
}
public async Task <string> Put(string host, string id, string flag, int vuln)
{
var client = new AsyncHttpClient(GetBaseUri(host), true);
var login = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
var name = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
var pass = RndText.RandomWord(RndUtil.GetInt(MinRandomFieldLength, MaxRandomFieldLength)).RandomLeet().RandomUpperCase();
await Console.Error.WriteLineAsync($"login '{login}', name '{name}', pass '{pass}'").ConfigureAwait(false);
var signUpQuery = $"?login={WebUtility.UrlEncode(login)}&name={WebUtility.UrlEncode(name)}&password={WebUtility.UrlEncode(pass)}";
var result = await client.DoRequestAsync(HttpMethod.Post, ApiAuthSignUp + signUpQuery, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiAuthSignUp} failed");
}
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
var items = Enumerable.Range(0, RndUtil.GetInt(1, 3)).Select(i => new Note {
Title = RndText.RandomText(RndUtil.GetInt(MinRandomTitleLength, MaxRandomTitleLength)).RandomUmlauts(),
Text = RndText.RandomText(RndUtil.GetInt(MinRandomTextLength, MaxRandomTextLength)).RandomUmlauts()
}).ToArray();
var itemWithFlag = RndUtil.Choice(items);
if (RndUtil.GetInt(0, 2) == 0)
{
itemWithFlag.Text = flag;
}
else
{
itemWithFlag.Title = flag;
}
itemWithFlag.IsPrivate = true;
foreach (var item in items)
{
await Console.Error.WriteLineAsync($"title '{item.Title}', text '{item.Text}', isPrivate '{item.IsPrivate}'").ConfigureAwait(false);
var q = $"?title={WebUtility.UrlEncode(item.Title)}&text={WebUtility.UrlEncode(item.Text)}" + (item.IsPrivate ? "&isPrivate=on" : null);
result = await client.DoRequestAsync(HttpMethod.Post, ApiNotesAdd + q, null, NetworkOpTimeout).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"post {ApiNotesAdd} failed");
}
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
}
var query = GetRandomQuery(itemWithFlag);
if (query.Trim('\"', ' ').Length <= 4) //NOTE: too low entropy
{
query = flag;
}
await Console.Error.WriteLineAsync($"random query '{query}'").ConfigureAwait(false);
var cookie = client.Cookies.GetCookieHeader(GetBaseUri(host));
await Console.Error.WriteLineAsync($"cookie '{cookie}'").ConfigureAwait(false);
var bytes = DoIt.TryOrDefault(() => Encoding.UTF8.GetBytes(cookie));
if (bytes == null || bytes.Length > 1024)
{
throw new CheckerException(result.StatusCode.ToExitCode(), "too large or invalid cookies");
}
return($"{login}:{pass}:{Convert.ToBase64String(bytes)}:{WebUtility.UrlEncode(query)}");
}
public async Task Get(string host, string id, string flag, int vuln)
{
var parts = id.Split(':', 4);
if (parts.Length != 4)
{
throw new Exception($"Invalid flag id '{id}'");
}
var login = parts[0];
var pass = parts[1];
var cookie = Encoding.UTF8.GetString(Convert.FromBase64String(parts[2]));
var encodedQuery = parts[3];
var client = new AsyncHttpClient(GetBaseUri(host), true);
if (RndUtil.GetInt(0, 2) == 0)
{
await Console.Error.WriteLineAsync($"login by cookie '{cookie}'").ConfigureAwait(false);
client.Cookies.SetCookies(GetBaseUri(host), cookie);
}
else
{
await Console.Error.WriteLineAsync($"login with login '{login}' and pass '{pass}'").ConfigureAwait(false);
var loginQuery = $"?login={WebUtility.UrlEncode(login)}&password={WebUtility.UrlEncode(pass)}";
var signInResult = await client.DoRequestAsync(HttpMethod.Post, ApiAuthSignIn + loginQuery).ConfigureAwait(false);
if (signInResult.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(signInResult.StatusCode.ToExitCode(), $"get {ApiAuthSignIn} failed");
}
await Console.Error.WriteLineAsync($"cookie '{client.Cookies.GetCookieHeader(GetBaseUri(host))}'").ConfigureAwait(false);
await RndUtil.RndDelay(MaxDelay).ConfigureAwait(false);
}
var query = RndUtil.Choice("?query=&myOnly=on", "?query=" + encodedQuery);
var result = await client.DoRequestAsync(HttpMethod.Get, ApiNotesSearch + query, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiNotesSearch} failed");
}
var notes = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <List <Note> >(result.BodyAsString));
if (notes == default)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiNotesSearch} response");
}
await Console.Error.WriteLineAsync($"found '{notes.Count}' notes by query '{query}'").ConfigureAwait(false);
var note = notes.FirstOrDefault(note => note.Author.Contains(flag) || note.Title.Contains(flag) || note.Text.Contains(flag));
if (note == null)
{
throw new CheckerException(ExitCode.CORRUPT, "flag not found");
}
//NOTE: Also check phrase query
if (!query.StartsWith("?query=%22") || !query.EndsWith("%22"))
{
return;
}
var words = WebUtility.UrlDecode(encodedQuery).Trim('"', ' ').Split().Where(word => !string.IsNullOrWhiteSpace(word)).Distinct().ToArray();
if (words.Length < 2)
{
return;
}
query = string.Join(' ', words.Reverse());
if (note.Author.Contains(query, StringComparison.InvariantCultureIgnoreCase) || note.Title.Contains(query, StringComparison.InvariantCultureIgnoreCase) || note.Text.Contains(query, StringComparison.InvariantCultureIgnoreCase))
{
return;
}
query = "?query=" + WebUtility.UrlEncode('"' + query + '"');
await Console.Error.WriteLineAsync($"check phrase query reversed '{query}'").ConfigureAwait(false);
result = await client.DoRequestAsync(HttpMethod.Get, ApiNotesSearch + query, null, NetworkOpTimeout, MaxHttpBodySize).ConfigureAwait(false);
if (result.StatusCode != HttpStatusCode.OK)
{
throw new CheckerException(result.StatusCode.ToExitCode(), $"get {ApiNotesSearch} failed");
}
notes = DoIt.TryOrDefault(() => JsonSerializer.Deserialize <List <Note> >(result.BodyAsString));
if (notes == default)
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiNotesSearch} response");
}
await Console.Error.WriteLineAsync($"found '{notes.Count}' notes by query '{query}'").ConfigureAwait(false);
if (notes.Any(note => note.Author.Contains(flag) || note.Title.Contains(flag) || note.Text.Contains(flag)))
{
throw new CheckerException(ExitCode.MUMBLE, $"invalid {ApiNotesSearch} response: phrase query");
}
}
