Badgercracker's Badgercracker

Author:
Badgercracker

Language:
C/C++

Upload:
2025-01-19 06:45

Download

Platform:
Windows

Difficulty:
1.9

Quality:
3.3

Arch:
x86-64

Downloads:
29

Size:
28.00 KB

Writeups:
0

Comments:
12

Description

A simple crackme with some anti-debugger features inside for fun!

Comments (12)
Writeups (0)

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th3j0k3r2012 on 2025-01-22 16:39: [Click to reveal]

0xh3xa on 2025-01-28 22:55: [Click to reveal]

visualearner on 2025-01-31 04:31: [Click to reveal]

Badgercracker on 2025-01-31 13:28: I see my errors my new one will surpass my previous ten fold

DsM.exe on 2025-01-31 15:53: Sorry, im new on this site. What kind of things i have t find while reversing this ? Just reading and try to understand or i can find a sort of flag ?

Hobmor on 2025-02-08 22:37: Can be solved using Strings.

iwn on 2025-02-09 11:35: found no anti-debugging features

chow on 2025-02-10 03:38: not bad, took 3 seconds to see hardcoded value in main routine lol. ignoring that it is pretty simple, anti debugging was minimal and easy to navigate

azraelpc on 2025-02-16 03:19: It came in parts, like a Ikea Crackme: movups xmm0, xmmword ptr [CRACKME_CODE_PLAINTEXT]; "X4A9Z-82JQK-47L6" movups xmmword ptr [rax], xmm0 mov ecx, dword ptr [string_P1N]; "P-1N" mov dword ptr [rax+0x10], ecx movzx ecx, word ptr [string_2T]; "2T" mov word ptr [rax+0x14], cx movzx eax, byte ptr [string_B]; "B" mov byte ptr [rdx+0x16], al mov byte ptr [rdx+0x17], 0x0

juansacco on 2025-02-17 13:39: [Click to reveal]

asdqe13334_54893 on 2025-02-21 13:32: Is there anyone to explain how we can find the key? I looked that on ida but i havent seen anything. Pls help!!

leetsp3ak on 2025-04-13 13:18: ## Vulnerabilities ### 1. Hardcoded License Key (Critical) **Location**: Lines 38-43 **CWE Reference**: CWE-798 (Use of Hard-coded Credentials) **Severity**: Critical **Root Cause**: The license key "X4A9-Z28-JQK-74L6-P1-T2B" is directly hardcoded into the binary, storing it byte-by-byte in memory. This makes it trivial to extract through static analysis or simple memory inspection. **Proof of Concept**: ``` 1. Use a hex editor or disassembler to view the binary 2. Locate the string pattern matching "X4A9-Z28-JQK-74L6-P1-T2B" 3. Alternatively, run the program in a debugger, break after line 43, and examine memory at licenseKeyHardcoded ``` Example with a simple memory dump: ```c // Extracting the key from memory char* key = licenseKeyHardcoded; printf("Extracted key: %s\n"); // Outputs: X4A9-Z28-JQK-74L6-P1-T2B ```

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crackmes.one

crackmes.one

Badgercracker's Badgercracker