Function at 0x18087a75
Capabilities:
Get file size
Read file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x58
mov eax, dword [0x181d600c]
xor eax, ebp
mov dword [ebp - 8], eax
mov eax, dword [ebp + 0x14]
push ebx
push esi
mov esi, dword [ebp + 8]
xor ebx, ebx
push edi
mov dword [ebp - 0x4c], eax
lea edi, [ebp - 0x3c]
xor eax, eax
mov dword [ebp - 0x54], esi
stosd dword es:[edi], eax
push ecx
push 0x100000
lea ecx, [ebp - 0x3c]
mov dword [ebp - 0x40], ebx
stosd dword es:[edi], eax
mov dword [ebp - 0x44], ebx
stosd dword es:[edi], eax
call fcn.1801144a
call fcn.180879d3
mov ecx, dword [esi]
mov edi, eax
mov eax, dword [esi + 4]
mov edx, ebx
sub eax, ecx
mov dword [ebp - 0x10], edi
sar eax, 2
mov dword [ebp - 0x48], ebx
test eax, eax
je 0x18087ba3
push ebx
push 0x80
push 3
push ebx
push 1
push 1
push dword [ecx + edx*4]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov esi, eax
cmp esi, 0xffffffff
je 0x18087c7d
lea eax, [ebp - 0x1c]
mov dword [ebp - 0x1c], ebx
push eax
push esi
mov dword [ebp - 0x18], ebx
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
je 0x18087c7d
mov eax, dword [ebp - 0x40]
add eax, dword [ebp - 0x1c]
mov ecx, dword [ebp - 0x44]
adc ecx, dword [ebp - 0x18]
mov dword [ebp - 0x40], eax
mov dword [ebp - 0x44], ecx
cmp ecx, ebx
ja 0x18087c76
jb 0x18087b34
cmp eax, 0x40000000
ja 0x18087c76
mov eax, dword [ebp - 0x38]
sub eax, dword [ebp - 0x3c]
mov dword [ebp - 0xc], ebx
mov dword [ebp - 0x50], eax
push ebx
lea ecx, [ebp - 0xc]
push ecx
push eax
push dword [ebp - 0x3c]
push esi
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x18087c6d
mov ecx, dword [ebp - 0xc]
test ecx, ecx
je 0x18087b79
mov eax, dword [edi]
push ecx
push dword [ebp - 0x3c]
mov ebx, dword [eax + 4]
mov ecx, ebx
call dword [0x181663e8]
mov ecx, edi
call ebx
mov ecx, dword [ebp - 0xc]
xor ebx, ebx
mov eax, dword [ebp - 0x50]
cmp ecx, eax
je 0x18087b40
push esi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov eax, dword [ebp - 0x54]
mov edx, dword [ebp - 0x48]
inc edx
mov dword [ebp - 0x48], edx
mov ecx, dword [eax]
mov eax, dword [eax + 4]
sub eax, ecx
sar eax, 2
cmp edx, eax
jb 0x18087ad3
xor eax, eax
lea edi, [ebp - 0x30]
stosd dword es:[edi], eax
push ecx
push 0x20
lea ecx, [ebp - 0x30]
stosd dword es:[edi], eax
stosd dword es:[edi], eax
call fcn.18087db5
mov esi, dword [ebp - 0x10]
mov eax, dword [esi]
mov edi, dword [eax + 8]
mov ecx, edi
call dword [0x181663e8]
mov ecx, esi
call edi
push 0x20
pop esi
push esi
push eax
push dword [ebp - 0x30]
call fcn.18136600
mov eax, dword [ebp - 0x4c]
add esp, 0xc
push esi
test eax, eax
je 0x18087c92
push dword [ebp - 0x30]
push dword [eax]
call fcn.18136e81
add esp, 0xc
test eax, eax
je 0x18087ca7
mov dword [ebp - 0xc], ebx
call fcn.18006f9c
push eax
lea ecx, [ebp - 0xc]
call fcn.180076af
mov ecx, dword [ebp - 0x30]
lea eax, [ebp - 0xc]
xor edi, edi
mov edx, esi
inc edi
push edi
push eax
call fcn.1801300e
mov esi, dword [ebp - 0xc]
pop ecx
pop ecx
movzx ecx, byte [0x181dc05a]
neg ecx
sbb ecx, ecx
and ecx, 0x181dbf50
je 0x18087c5e
push 9
pop eax
push edi
push eax
mov dword [ebp - 0x24], ecx
mov dword [ebp - 0x20], eax
mov dword [ebp - 0x1c], edi
call fcn.18008b5d
push esi
mov dword [ebp - 0x18], eax
lea eax, [ebp - 0x24]
push str._actual_hash_S_
push eax
call fcn.18007230
add esp, 0xc
lea ecx, [esi - 0x10]
call fcn.18006f72
mov ebx, 0x80040204
jmp 0x18087ca7
call fcn.1801ba25
mov ebx, eax
jmp 0x18087c89
mov ebx, 0x80040205
jmp 0x18087c84
call fcn.1801ba25
mov ebx, eax
cmp esi, 0xffffffff
je 0x18087caf
push esi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
jmp 0x18087caf
xor ecx, ecx
call fcn.1800f7a2
push esi
push dword [ebp - 0x30]
push dword [ebx]
call fcn.18136600
add esp, 0xc
lea ecx, [ebp - 0x30]
call fcn.180114c3
lea ecx, [ebp - 0x10]
call fcn.180412d9
lea ecx, [ebp - 0x3c]
call fcn.180114c3
mov ecx, dword [ebp - 8]
mov eax, ebx
pop edi
pop esi
xor ecx, ebp
pop ebx
call fcn.18121ed8
leave
ret 0x14