Function at 0x4588e0
Capabilities:
Create a process with modified i/o handles and window
Create pipe
Create process on windows
Read file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x58564b
mov eax, dword fs:[0]
push eax
mov eax, 0x3884
call fcn.00551530
mov eax, dword [0x6039b0]
xor eax, ebp
mov dword [ebp - 0x10], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov edi, ecx
mov dword [ebp - 0x3818], edi
mov esi, dword [ebp + 8]
lea eax, [ebp - 0x3810]
push 0x2800
push 0
push eax
mov dword [ebp - 0x388c], 0
call fcn.00553bc0
add esp, 0xc
lea eax, [ebp - 0x3810]
test esi, esi
je 0x45895e
push esi
push str.regsvr32__s
push 0x5e0164
push eax
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
jmp 0x458972
push str.regsvr32__s
push 0x5dfb38
push eax
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0xc
push 0x5e021c
lea ecx, [ebp - 0x3814]
mov dword [ebp - 0x3814], 0
call fcn.0040b1c0
push 0
lea eax, [ebp - 0x382c]
mov dword [ebp - 4], 0
push eax
lea eax, [ebp - 0x3820]
mov dword [ebp - 0x381c], 0
push eax
lea eax, [ebp - 0x381c]
mov dword [ebp - 0x3820], 0
push eax
mov dword [ebp - 0x382c], 0xc
mov dword [ebp - 0x3828], 0
mov dword [ebp - 0x3824], 1
call dword [sym.imp.KERNEL32.dll_CreatePipe]
mov ebx, dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
je 0x458aed
lea eax, [ebp - 0x3888]
mov dword [ebp - 0x3888], 0x44
push eax
call dword [sym.imp.KERNEL32.dll_GetStartupInfoW]
mov eax, dword [ebp - 0x3820]
mov dword [ebp - 0x3848], eax
mov dword [ebp - 0x384c], eax
xor eax, eax
mov word [ebp - 0x3858], ax
lea eax, [ebp - 0x383c]
push eax
lea eax, [ebp - 0x3888]
mov dword [ebp - 0x385c], 0x101
push eax
push 0
push 0
push 0
push 1
push 0
push 0
lea eax, [ebp - 0x3810]
push eax
push 0
call dword [sym.imp.KERNEL32.dll_CreateProcessW]
test eax, eax
je 0x458aed
push dword [ebp - 0x3820]
call ebx
push 0x1000
lea eax, [ebp - 0x1010]
push 0
push eax
call fcn.00553bc0
mov esi, dword [sym.imp.KERNEL32.dll_ReadFile]
lea eax, [ebp - 0x3818]
add esp, 0xc
push 0
push eax
push 0xfff
lea eax, [ebp - 0x1010]
push eax
push dword [ebp - 0x381c]
call esi
test eax, eax
je 0x458aed
lea eax, [ebp - 0x1010]
lea edx, [eax + 1]
nop dword [eax + eax]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x458ab0
sub eax, edx
lea ecx, [ebp - 0x3814]
push eax
lea eax, [ebp - 0x1010]
push eax
call fcn.0040b4c0
push 0
lea eax, [ebp - 0x3818]
push eax
push 0xfff
lea eax, [ebp - 0x1010]
push eax
push dword [ebp - 0x381c]
call esi
test eax, eax
jne 0x458aa2
mov eax, dword [ebp - 0x381c]
test eax, eax
je 0x458b04
push eax
call ebx
mov dword [ebp - 0x381c], 0
push dword [ebp - 0x383c]
call ebx
push dword [ebp - 0x3838]
call ebx
mov ecx, dword [ebp - 0x3814]
lea ecx, [ecx - 0x10]
call fcn.00408b90
add eax, 0x10
mov dword [ebp - 4], 0xffffffff
mov dword [edi], eax
or ecx, 0xffffffff
mov eax, dword [ebp - 0x3814]
add eax, 0xfffffff0
lock xadd dword [eax + 0xc], ecx
dec ecx
test ecx, ecx
jg 0x458b4c
mov ecx, dword [eax]
push eax
mov edx, dword [ecx]
call dword [edx + 4]
mov eax, edi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 0x10]
xor ecx, ebp
call fcn.0055042c
mov esp, ebp
pop ebp
ret