cleanup

2026/kalmar/rev/oracle/solve.cpp

@@ -0,0 +1,79 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <stdint.h>
+#include <future>
+
+const uint32_t BASIS = 0x811c9dc5;
+const uint32_t PRIME = 0x1000193;
+const std::string CHARSET = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_";
+
+uint32_t fnv1a(const std::string& s) {
+    uint32_t hash = BASIS;
+    for (unsigned char c : s) {
+        hash ^= c;
+        hash *= PRIME;
+    }
+    return hash;
+}
+
+// Recursive cracker for a specific segment
+std::string crack(int length, uint32_t target) {
+    std::string current(length, CHARSET[0]);
+    
+    auto backtrack = [&](auto self, int depth) -> bool {
+        if (depth == length) {
+            return fnv1a(current) == target;
+        }
+        for (char c : CHARSET) {
+            current[depth] = c;
+            if (self(self, depth + 1)) return true;
+        }
+        return false;
+    };
+
+    if (backtrack(backtrack, 0)) return current;
+    return "?????";
+}
+
+int main() {
+    struct Segment {
+        int id;
+        int len;
+        uint32_t hash;
+    };
+
+    std::vector<Segment> segments = {
+        {1, 4, 0x1fdb82eb}, // 7:11
+        {2, 3, 0xc498c8a6}, // 12:15
+        {3, 5, 0xd451383b}, // 16:21
+        {4, 3, 0xf1d1bdc9}, // 22:25
+        {5, 5, 0x5768cca7}, // 26:31
+        {6, 3, 0xe25d1966}, // 32:35
+        {7, 4, 0x45b2772b}  // 36:40
+    };
+
+    std::vector<std::future<std::string>> workers;
+    std::cout << "[*] Launching 7 parallel threads for FNV-1a brute-force..." << std::endl;
+
+    for (const auto& s : segments) {
+        workers.push_back(std::async(std::launch::async, crack, s.len, s.hash));
+    }
+
+    std::vector<std::string> results;
+    for (size_t i = 0; i < workers.size(); ++i) {
+        std::string found = workers[i].get();
+        results.push_back(found);
+        std::cout << "[+] Segment " << i + 1 << " (" << segments[i].len << " chars): " << found << std::endl;
+    }
+
+    std::cout << "\n==========================================" << std::endl;
+    std::cout << "FINAL FLAG: kalmar{";
+    for (size_t i = 0; i < results.size(); ++i) {
+        std::cout << results[i] << (i == results.size() - 1 ? "" : "_");
+    }
+    std::cout << "}" << std::endl;
+    std::cout << "==========================================" << std::endl;
+
+    return 0;
+}