Function at 0x509d34
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Parse pe header

Disassembly:
push ebp
mov ebp, esp
add esp, 0xfffffebc
push ebx
push esi
push edi
mov byte [ebp - 2], cl
mov byte [ebp - 1], dl
mov esi, eax
xor eax, eax
mov dword [ebp - 0xc], eax
xor eax, eax
mov dword [ebp - 8], eax
xor edx, edx
push ebp
push 0x509f98
push dword fs:[edx]
mov dword fs:[edx], esp
lea edx, [ebp - 0x4c]
mov eax, esi
mov ecx, 0x40
call fcn.00406fc8
cmp word [ebp - 0x4c], 0x5a4d
je 0x509d93
mov eax, dword [0x517ef8]
mov edx, 0x509fd0
call fcn.0040a018
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x509fb7
mov eax, dword [ebp - 0x10]
cdq
push edx
push eax
mov eax, esi
call fcn.00508eb4
lea edx, [ebp - 0x144]
mov ecx, 0xf8
call fcn.00406fc8
cmp dword [ebp - 0x144], 0x4550
je 0x509dd8
mov eax, dword [0x517ef8]
mov edx, 0x50a03c
call fcn.0040a018
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x509fb7
push 0x40
push 0x2000
mov eax, dword [ebp - 0xf4]
push eax
mov eax, dword [ebp - 0x110]
push eax
call sub.kernel32.dll_VirtualAlloc_1
mov ebx, eax
test ebx, ebx
jne 0x509e0f
push 0x40
push 0x2000
mov eax, dword [ebp - 0xf4]
push eax
push 0
call sub.kernel32.dll_VirtualAlloc_1
mov ebx, eax
test ebx, ebx
jne 0x509e2f
mov eax, dword [0x517ef8]
mov edx, 0x50a0b0
call fcn.0040a018
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x509fb7
push 0x11
push 0
call sub.kernel32.dll_GetProcessHeap
push eax
call sub.kernel32.dll_HeapAlloc
mov dword [ebp - 0xc], eax
mov eax, dword [ebp - 0xc]
mov dword [eax + 4], ebx
mov eax, dword [ebp - 0xc]
xor edx, edx
mov dword [eax + 0xc], edx
mov eax, dword [ebp - 0xc]
xor edx, edx
mov dword [eax + 8], edx
mov eax, dword [ebp - 0xc]
mov byte [eax + 0x10], 0
push 0x40
push 0x1000
mov eax, dword [ebp - 0xf4]
push eax
push ebx
call sub.kernel32.dll_VirtualAlloc_1
push 0x40
push 0x1000
mov eax, dword [ebp - 0xf0]
push eax
push ebx
call sub.kernel32.dll_VirtualAlloc_1
mov edi, eax
mov eax, dword [ebp - 0x10]
add eax, dword [ebp - 0xf0]
mov edx, edi
mov ecx, esi
xchg ecx, eax
call fcn.00406fc8
mov eax, edi
xor edx, edx
push edx
push eax
mov eax, dword [ebp - 0x10]
cdq
add eax, dword [esp]
adc edx, dword [esp + 4]
add esp, 8
mov ecx, eax
mov eax, dword [ebp - 0xc]
mov dword [eax], ecx
mov dword [ecx + 0x34], ebx
mov ecx, dword [ebp - 0xc]
lea edx, [ebp - 0x144]
mov eax, esi
call fcn.005093a4
mov eax, ebx
xor edx, edx
push edx
push eax
mov eax, dword [ebp - 0x110]
xor edx, edx
sub dword [esp], eax
sbb dword [esp + 4], edx
pop eax
pop edx
test eax, eax
je 0x509eee
push eax
mov eax, dword [ebp - 0xc]
push eax
call fcn.00508fec
mov eax, dword [ebp - 0xc]
push eax
call fcn.0050966c
test al, al
jne 0x509f14
mov eax, dword [0x517ef8]
mov edx, 0x50a10c
call fcn.0040a95c
mov eax, dword [0x517ef8]
call fcn.004267e4
movzx eax, byte [ebp - 1]
push eax
mov eax, dword [ebp - 0xc]
push eax
call fcn.00509a14
mov eax, dword [ebp - 0xc]
mov eax, dword [eax]
mov ecx, dword [eax + 0x28]
test ecx, ecx
je 0x509f8e
mov eax, ebx
xor edx, edx
push edx
push eax
mov eax, ecx
xor edx, edx
add eax, dword [esp]
adc edx, dword [esp + 4]
add esp, 8
mov esi, eax
test esi, esi
jne 0x509f5c
mov eax, dword [0x517ef8]
mov edx, 0x50a174
call fcn.0040a018
call fcn.004267e4
cmp byte [ebp - 2], 0
je 0x509f87
push 0
push 1
push ebx
call esi
cmp eax, 1
sbb eax, eax
inc eax
test al, al
jne 0x509f87
mov eax, dword [0x517ef8]
mov edx, 0x50a1d8
call fcn.0040a018
call fcn.004267e4
mov eax, dword [ebp - 0xc]
mov byte [eax + 0x10], 1
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x509fb1
mov eax, dword [ebp - 0xc]
mov dword [ebp - 8], eax
mov eax, dword [ebp - 8]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 8