Cracker7525's Very Hard Crackme

Author:
Cracker7525

Language:
C/C++

Upload:
2023-07-01 19:53

Download

Platform:
Windows

Difficulty:
3.8

Quality:
2.3

Arch:
x86-64

Downloads:
199

Size:
177.00 KB

Writeups:
0

Comments:
7

Description

Very Very Very hard

Labels ?

String / data encryption Base64 (encryption) Crypto / hash algorithm Base64 (crypto)

Comments (7)
Writeups (0)

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pavler on 2023-07-02 18:08: Eğer bunu görüyorsan şanslısın cracked - https://prnt.sc/kG5REGZU2xod

Cracker7525 on 2023-07-05 13:53: Bruh so fast

cnathansmith on 2023-07-26 20:21: I worked on this for the better part of yesterday and got completely stuck lol. I'm probably overlooking something simple, but here's the rabbit hole I went down with it. If this were a real product, I would've just patched it and called it a day :) https://github.com/charlesnathansmith/scratch/blob/main/crackmes/veryhard.md

Cracker7525 on 2023-07-30 17:40: cnathansmith I congratulate you my friend if you have a discord account I want to talk to you

Cracker7525 on 2023-07-30 20:58: #include #include #include #include #include #include // Base64 table static const char base64_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz" "0123456789+/"; void* allocateMemory(size_t size) { return malloc(size); } void deallocateMemory(void* ptr) { free(ptr); } bool is_base64(unsigned char c) { return (std::isalnum(c) || (c == '+') || (c == '/')); } char* allocateString(const char* str) { size_t length = strlen(str); char* allocatedString = static_cast(allocateMemory(length + 1)); strcpy(allocatedString, str); return allocatedString; } char* base64_encode(const char* input) { std::string encoded_string; int i = 0; int j = 0; unsigned char char_array_3[3]; unsigned char char_array_4[4]; for (const char* p = input; *p; ++p) { char_array_3[i++] = *p; if (i == 3) { char_array_4[0] = (char_array_3[0] & 0xfc) 2; char_array_4[1] = ((char_array_3[0] & 0x03) 4); char_array_4[2] = ((char_array_3[1] & 0x0f) 6); char_array_4[3] = char_array_3[2] & 0x3f; for (i = 0; i 2; char_array_4[1] = ((char_array_3[0] & 0x03) 4); char_array_4[2] = ((char_array_3[1] & 0x0f) 6); for (j = 0; j (std::find(base64_chars, base64_chars + 64, char_array_4[i]) - base64_chars); } char_array_3[0] = (char_array_4[0] 4); char_array_3[1] = ((char_array_4[1] & 0xf) 2); char_array_3[2] = ((char_array_4[2] & 0x3) (std::find(base64_chars, base64_chars + 64, char_array_4[j]) - base64_chars); } char_array_3[0] = (char_array_4[0] 4); char_array_3[1] = ((char_array_4[1] & 0xf) 2); for (j = 0; j (allocateMemory(sum * sizeof(char))); std::cout (allocateMemory(strlen("Eğer bunu görüyorsan şanslısın") + 1)); memcpy(hiddenString, "Eğer bunu görüyorsan şanslısın", strlen("Eğer bunu görüyorsan şanslısın")); hiddenString[strlen("Eğer bunu görüyorsan şanslısın")] = '\0'; std::cout

cnathansmith on 2023-08-01 13:10: I mean, I didn't solve it lol Do you have a github link or something to the source? This site is butchering your comment with it trying to prevent XSS. I never quite figured out what I was supposed to do with Discord but have accounts pretty much everywhere else. Reddit: u/anaccountbyanyname Twitter ("X" -_-): @cnathansmith IG: @charlesnathansmith

nightxyz on 2023-08-09 15:45: Any clue ? Can we manipulate system date as cnathansmith said ?

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Cracker7525's Very Hard Crackme