Added Invoke-ReflectivePEInjection

Another awesome addition from Joe Bialek. Invoke-ReflectivePEInjection
is a vast improvement over Invoke-ReflectiveDllInjection. It adds the
following features:

* Now supports loading exe files in memory
* Supports reflective dll injection into a remote process
* Additional sample Visual Studio solutions

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/readme.txt

@@ -0,0 +1,12 @@
+This contains the assembly code I used to build the shellcode the PowerShell script uses. Some of the assembly isn't included beause I didn't save it, this should just be for the SUPER easy stuff like moving an address to EAX and returning.
+
+Compile:
+x64:
+nasm -f elf64 FileName.asm
+ld -o FileName FileName.o
+objdump -M intel -d FileName
+
+x86:
+nasm FileName.asm
+ld -o FileName FileName.o
+objdump -M intel -d FileName

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x64/CallDllMain.asm

@@ -0,0 +1,20 @@
+[SECTION .text]
+global _start
+
+_start:
+	; Get stack setup
+	push rbx
+	mov rbx, rsp
+	and sp, 0xff00
+	
+	; Call DllMain
+	mov rcx, 0x4141414141414141	; DLLHandle, set by PowerShell
+	mov rdx, 0x1			; PROCESS_ATTACH
+	mov r8, 0x0			; NULL
+	mov rax, 0x4141414141414141	; Address of DllMain, set by PS
+	call rax
+
+	; Fix stack
+	mov rsp, rbx
+	pop rbx
+	ret

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x64/ExitThread.asm

@@ -0,0 +1,14 @@
+[SECTION .text]
+
+global _start
+
+_start:
+	; Set a var to 1, let PS known exe is exiting
+	mov rbx, 0x4141414141414141
+	mov [rbx], byte 0x01
+
+	; Call exitthread instead of exitprocess
+	sub rsp, 0xc0
+	and sp, 0xFFf0 ; Needed for stack alignment
+	mov rbx, 0x4141414141414141
+	call rbx

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x64/GetFuncAddress.asm

@@ -0,0 +1,27 @@
+[SECTION .text]
+
+global _start
+
+_start:
+	; Save state of rbx and stack
+	push rbx
+	mov rbx, rsp
+
+	; Set up stack for function call to GetProcAddress
+	sub rsp, 0x20
+	and sp, 0xffc0
+
+	; Call getprocaddress
+	mov rcx, 0x4141414141414141	; DllHandle, set by PS
+	mov rdx, 0x4141414141414141	; Ptr to FuncName string, set by PS
+	mov rax, 0x4141414141414141	; GetProcAddress address, set by PS
+	call rax
+
+	; Store the result
+	mov rcx, 0x4141414141414141	; Ptr to buffer to save result,set by PS
+	mov [rcx], rax
+
+	; Restore stack
+	mov rsp, rbx
+	pop rbx
+	ret

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x64/LoadLibraryA.asm

@@ -0,0 +1,23 @@
+[SECTION .text]
+
+global _start
+
+_start:
+	; Save rsp and setup stack for function call
+	push rbx
+	mov rbx, rsp
+	sub rsp, 0x20
+	and sp, 0xffc0
+
+	; Call LoadLibraryA
+	mov rcx, 0x4141414141414141	; Ptr to string of library, set by PS
+	mov rdx, 0x4141414141414141	; Address of LoadLibrary, set by PS
+	call rdx
+
+	mov rdx, 0x4141414141414141	; Ptr to save result, set by PS
+	mov [rdx], rax
+
+	; Fix stack
+	mov rsp, rbx
+	pop rbx
+	ret

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x86/CallDllMain.asm

@@ -0,0 +1,23 @@
+[SECTION .text]
+global _start
+
+_start:
+	; Get stack setup
+	push ebx
+	mov ebx, esp
+	and esp, 0xfffffff0
+	
+	; Call DllMain
+	mov ecx, 0x41414141		; DLLHandle, set by PowerShell
+	mov edx, 0x1			; PROCESS_ATTACH
+	mov eax, 0x0			; NULL
+	push eax
+	push edx
+	push ecx
+	mov eax, 0x41414141		; Address of DllMain, set by PS
+	call eax
+
+	; Fix stack
+	mov esp, ebx
+	pop ebx
+	ret

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x86/ExitThread.asm

@@ -0,0 +1,13 @@
+[SECTION .text]
+global _start
+
+_start:
+	; Set a var to 1, let PS know the EXE is exiting
+	mov ebx, 0x41414141
+	mov [ebx], byte 0x01
+
+	; Call exitthread instead of exit process
+	sub esp, 0x20
+	and esp, 0xFFFFFFc0 ; Needed for stack alignment
+	mov ebx, 0x41414141
+	call ebx

CodeExecution/Invoke-ReflectivePEInjection_Resources/Shellcode/x86/GetProcAddress.asm

@@ -0,0 +1,28 @@
+[SECTION .text]
+
+global _start
+
+_start:
+	; Save state of ebx and stack
+	push ebx
+	mov ebx, esp
+	
+	; Align stack
+	and esp, 0xffffffc0
+
+	; Call GetProcAddress
+	mov eax, 0x41414141	; DllHandle, supplied by PS
+	mov ecx, 0x41414141	; Function name, supplied by PS
+	push ecx
+	push eax
+	mov eax, 0x41414141	; GetProcAddress address, supplied by PS
+	call eax
+
+	; Write GetProcAddress return value to an address supplied by PS
+	mov ecx, 0x41414141	; Address supplied by PS
+	mov [ecx], eax
+
+	; Fix stack
+	mov esp, ebx
+	pop ebx
+	ret