Major injector refactoring

injector/include/gpa.asm

@@ -0,0 +1,62 @@
+BITS 64
+
+; https://dennisbabkin.com/blog/?t=how-to-implement-getprocaddress-in-shellcode
+GetKernel32ModuleHandle:
+    mov rax, gs:[60h]
+    mov rax, [rax + 18h]
+    mov rax, [rax + 20h]
+    mov rax, [rax]
+    mov rax, [rax]
+    mov rax, [rax + 20h]
+    ret
+
+
+GetAddressOf_GetProcAddress:
+    mov eax, [rcx + 3ch]
+    add rax, rcx
+    lea rax, [rax + 88h]
+
+    mov edx, [rax]
+    lea rax, [rcx + rdx]
+
+    mov edx, [rax + 18h]
+    mov r8d, [rax + 20h]
+    lea r8, [rcx + r8]
+
+    mov r10, 41636f7250746547h ; "GetProcA"
+    mov r11, 0073736572646441h ; "Address\0"
+
+.1:
+    mov r9d, [r8]
+    lea r9, [rcx + r9]
+
+    ; Function name comparision
+    cmp r10, [r9]
+    jnz .2
+    cmp r11, [r9 + 7]
+    jnz .2
+
+    ; Found GetProcAddress
+    neg rdx
+    mov r10d, [rax + 18h]
+    lea rdx, [r10 + rdx]
+
+    mov r10d, [rax + 24h]
+    lea r10, [rcx + r10]
+    movzx rdx, word [r10 + rdx * 2]
+
+    mov r10d, [rax + 1ch]
+    lea r10, [rcx + r10]
+
+    mov r10d, [r10 + rdx * 4]
+
+    lea rax, [rcx + r10] ; Function address
+    jmp .end
+
+.2:
+    add r8, 4
+    dec rdx
+    jnz .1
+
+.end:
+    ret