thed0ublec's CrazyCrackMe

Author:
thed0ublec

Language:
.NET

Upload:
2024-12-09 14:03

Download

Platform:
Windows

Difficulty:
2.8

Quality:
4.5

Arch:
x86-64

Downloads:
16

Writeups:
2

Comments:
21

Description

CrazyCrackMe! this is so crazy!! who can try?

Comments (21)
Writeups (2)

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aname on 2024-12-12 10:49: because of the last password check routine, possible number of cases has been reduced. for my ascii range there are 249 correct passwords.

thed0ublec on 2024-12-12 15:14: If you need the source code of this CrackMe, you can go to the Solutions tab and download the solution uploaded by thed0ublec (me), which also comes with a brute-force script for your reference.

iAniket9 on 2024-12-12 18:00: [Click to reveal]

jewdev on 2024-12-14 22:32: [Click to reveal]

spaoy on 2024-12-15 00:19: I just changed the result of incorrect to correct, every password is correct (to do it just ignore the obfuscate)

hackercult1337 on 2024-12-15 12:25: https://postimg.cc/MXP9zHzy Cracked without pass

Mat62 on 2024-12-18 14:43: I have coded a brute force in Python 3, i have 435 valid serials.

wepinek on 2024-12-31 09:38: Very interesting! I like it

Roufox on 2024-12-31 15:57: [Click to reveal]

jewdev on 2025-01-06 19:22: https://rentry.co/yp642nfq

Pythol on 2025-01-07 23:50: [Click to reveal]

frayxzer on 2025-01-09 12:07: I am new Aand I don't know how to crack it can anyone help me? I have discord.

jmpeax on 2025-01-09 18:24: @frayzer what's the problem? First use some decompiler e.g. dnSpy and load the executable. In dnSpy go to the main() method and explore all the other methods. They're somewhat obfuscated, but if you examine them, it will become very clear what they do. You may want to export the decompiled exe to a project in order to open it in Visual Studio. There you're able to easily rename the methods you examined. Try and give them names that reflect what these methods are doing. Rename all parameters appropriately (I used pretty much "str" everywhere a string was passed as a parameter). In VS find the method that has the check for a debugger in it, edit it, to return false always [This method contains the following code: return Debugger.IsAttached || Marshal.ReadByte((IntPtr)2147353300) 0;] After editing this, you can start the debugger and step through every method and pretty quickly discover a method that decodes the obfuscated strings. It's the method containing "stringBuilder.Append((c == 'I') ? '1' : '0');". Go for it :)

KonradCrackMe on 2025-01-09 22:09: I have managed to find 432 Password with alphanumeric symbols. By adding some additional symbols it increased to 901. I have only used passwords of length 16.

pkhanh on 2025-01-13 08:30: tutorial -- source bool flag2 = lIIlIIIlIIIlIIIlIlIIIlIIIlIIIIlII.lIllIlIIlIlIIlIl(text6); -- solution just rewrite bool flag2 = true;

Magnetar on 2025-01-19 07:07: A1B2C3D4E5F6 G7H8I9J0K1L2 M3N4O5P6Q7R8 S9T0U1V2W3X4 Y5Z6A7B8C9D0 E1F2G3H4I5J6 K7L8M9N0O1P2 Q3R4S5T6U7V8 W9X0Y1Z2A3B4 C5D6E7F8G9H0

Magnetar on 2025-01-19 09:43: using System; using System.Text; class PasswordGenerator { public static void Main() { // The hidden pattern we need to include string pattern = "CrazyCrackMe"; // Generate some candidate passwords string[] candidates = { "eMkcarCyzarC", // Just the pattern reversed "1eMkcarCyzarC", // Pattern reversed with a prefix "eMkcarCyzarC2", // Pattern reversed with a suffix "xeMkcarCyzarC3", "eMkcarCyzarCxy", "12MkcarCyzarC3", "eMkcarCyzarC99", "xxMkcarCyzarC4", "eMkcarCyzarCab" }; Console.WriteLine("Testing candidate passwords...\n"); foreach (string candidate in candidates) { int checksum = CalculateChecksum(candidate); Console.WriteLine($"Password: {candidate}"); Console.WriteLine($"Length: {candidate.Length} (Valid: {candidate.Length = 8 && candidate.Length

Magnetar on 2025-01-19 09:47: just Used .NET Reflector and Decompiled to RealSource Code but All COdes are obfuscated...so Used AI to Convert Code into Readable one and this is Source Code namespace PasswordValidator { using System; using System.Diagnostics; using System.Runtime.InteropServices; using System.Text; internal class PasswordChecker { private static bool ContainsHiddenPattern(string input) = ReverseString(input).Contains(DecodeBinaryPattern("lIllllIIlIIIllIllIIllllIlIIIIlIllIIIIllIlIllllIIlIIIllIllIIllllIlIIlllIIlIIlIlIIlIllIIlIlIIllIlI")); private static string ReverseString(string input) { char[] array = input.ToCharArray(); Array.Reverse(array); return new string(array); } private static string DecodeBinaryPattern(string encodedPattern) { StringBuilder binaryBuilder = new StringBuilder(); foreach (char ch in encodedPattern) { binaryBuilder.Append((ch == 'I') ? '1' : '0'); } return ConvertBinaryToText(binaryBuilder.ToString()); } private static string ConvertBinaryToText(string binaryString) { StringBuilder textBuilder = new StringBuilder(); for (int i = 0; i Debugger.IsAttached || (Marshal.ReadByte((IntPtr)0x7ffe02d4) != 0); private static bool ValidatePassword(string password) = !string.IsNullOrEmpty(password) ? (PasswordLengthValidator.IsValidLength(password.Length) ? (ValidateChecksum(password) ? ContainsHiddenPattern(password) : false) : false) : false; private static bool ValidateChecksum(string input) { int checksum = 0; foreach (char ch in input) { checksum = (checksum (length = 8) && (length

Magnetar on 2025-01-19 09:49: private static bool ValidateChecksum(string input) { int checksum = 0; foreach (char ch in input) { checksum = (checksum (length = 8) && (length

Magnetar on 2025-01-19 10:04: Length: 8-16 characters Checksum: Must equal 0x5a5a (23130 in decimal) When reversed, must contain "CrazyCrackMe"

sharpicxx on 2025-01-26 20:42: https://gist.github.com/sharpicx/b71a80dfdcf856ba9b4e0a454eecc7c2

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Solution by jmpeax on 2025-01-07 19:20:
Explanation and keygen

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Solution by Nathantac on 2025-09-14 16:50:
Solution with images and code

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crackmes.one

crackmes.one

thed0ublec's CrazyCrackMe