Function at 0x40df90
Capabilities:
Get file size
Read file on windows

Disassembly:
push ebp
lea ebp, [esp - 0x74]
sub esp, 0x74
push 0xffffffffffffffff
push 0x415977
mov eax, dword fs:[0]
push eax
sub esp, 0x20
mov eax, dword [0x41c038]
xor eax, ebp
mov dword [ebp + 0x70], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov edi, ecx
mov eax, dword [edi]
mov esi, dword [ebp + 0x7c]
mov byte [edi + 8], 0
call dword [eax]
push 4
mov dword [ebp + 0x6c], 0
call fcn.00412c9d
mov dword [ebp + 0x14], eax
mov dword [ebp - 4], 0
mov dword [eax], 0
mov dword [eax], 0xffffffff
mov dword [ebp - 4], 0xffffffff
mov dword [ebp + 0x6c], eax
mov dword [ebp - 4], 1
sub esp, 0xc
lea ecx, [ebp + 0x6c]
push esi
call fcn.0040d500
test al, al
jne 0x40e05b
lea ecx, [ebp + 0x34]
call fcn.0040eea0
mov byte [ebp - 4], 2
cmp dword [edi + 4], 0
je 0x40e047
sub esp, 0x18
lea eax, [ebp + 0x34]
mov ecx, esp
mov dword [ebp + 0x14], esp
push eax
call fcn.00402090
mov byte [ebp - 4], 3
mov ecx, dword [edi + 4]
push 0
mov eax, dword [ecx]
mov byte [ebp - 4], 2
call dword [eax + 4]
mov byte [ebp - 4], 1
lea ecx, [ebp + 0x34]
call fcn.00402030
mov esi, dword [ebp + 0x6c]
jmp 0x40e2c1
mov esi, dword [ebp + 0x6c]
test esi, esi
je 0x40e25c
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40e25c
lea ecx, [ebp + 0x64]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov ebx, eax
cmp ebx, 0xffffffff
jne 0x40e091
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x40e25c
mov ecx, dword [ebp + 0x64]
xor eax, eax
add eax, ebx
mov dword [ebp], eax
adc ecx, 0
or eax, ecx
mov dword [ebp + 4], ecx
je 0x40e25c
xorps xmm0, xmm0
mov byte [ebp + 0x1b], 1
push 0x10000
mov dword [ebp + 0x68], 0
movlpd qword [ebp + 0x10], xmm0
call fcn.0041339e
mov ecx, dword [ebp + 0x10]
mov ebx, eax
mov eax, dword [ebp + 0x14]
add esp, 4
mov dword [ebp + 8], eax
mov dword [ebp + 0xc], ecx
test ebx, ebx
je 0x40e1ca
cmp dword [esi], 0xffffffff
je 0x40e1e2
push 0
lea eax, [ebp + 0x68]
mov dword [ebp + 0x68], 0
push eax
push 0x10000
push ebx
push dword [esi]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x40e1ca
cmp byte [edi + 8], 0
jne 0x40e17f
mov ecx, dword [ebp + 0x68]
test ecx, ecx
je 0x40e1c7
mov eax, dword [edi]
push ecx
push ebx
mov ecx, edi
call dword [eax + 4]
mov edx, dword [ebp + 0xc]
add edx, dword [ebp + 0x68]
mov ecx, dword [ebp + 8]
mov eax, dword [edi + 4]
adc ecx, 0
mov dword [ebp + 0xc], edx
mov dword [ebp + 8], ecx
test eax, eax
je 0x40e170
mov esi, dword [eax]
mov edx, ecx
mov ecx, dword [ebp + 0xc]
call fcn.004144b0
mov edx, dword [ebp + 4]
mov ecx, dword [ebp]
movsd qword [ebp + 0x10], xmm0
call fcn.004144b0
movsd xmm1, qword [ebp + 0x10]
sub esp, 8
divsd xmm1, xmm0
mov ecx, dword [edi + 4]
movsd qword [esp], xmm1
call dword [esi]
mov esi, dword [ebp + 0x6c]
mov dword [ebp + 0x68], 0
jmp 0x40e0d7
lea ecx, [ebp + 0x1c]
call fcn.00403330
mov byte [ebp - 4], 6
cmp dword [edi + 4], 0
je 0x40e1b6
sub esp, 0x18
lea eax, [ebp + 0x1c]
mov ecx, esp
mov dword [ebp + 0x14], esp
push eax
call fcn.00402090
mov byte [ebp - 4], 7
mov ecx, dword [edi + 4]
push 0
mov eax, dword [ecx]
add eax, 4
mov byte [ebp - 4], 6
call dword [eax]
xor al, al
mov byte [ebp + 0x1b], al
mov byte [ebp - 4], 1
lea ecx, [ebp + 0x1c]
call fcn.00402030
mov esi, dword [ebp + 0x6c]
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40e1e2
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
je 0x40e1e2
mov dword [esi], 0xffffffff
push ebx
call fcn.004133a7
mov eax, dword [edi]
add esp, 4
mov ecx, edi
call dword [eax + 8]
lea ecx, [ebp - 0x2c]
call fcn.00402430
call fcn.00402170
lea edx, [ebp - 0x10]
mov dword [ebp - 0x10], 0
mov ecx, eax
mov dword [eax + 0x10], 0
mov dword [eax + 0x14], 7
call fcn.00402250
mov byte [ebp - 4], 8
cmp dword [edi + 4], 0
je 0x40e24b
sub esp, 0x18
lea eax, [ebp - 0x2c]
mov ecx, esp
mov dword [ebp + 0x14], esp
push eax
call fcn.00402090
mov byte [ebp - 4], 9
mov ecx, dword [edi + 4]
push 1
mov eax, dword [ecx]
mov byte [ebp - 4], 8
call dword [eax + 4]
mov byte [ebp - 4], 1
lea ecx, [ebp - 0x2c]
call fcn.00402030
mov bl, byte [ebp + 0x1b]
jmp 0x40e2c3
lea ecx, [ebp + 0x4c]
call fcn.00402430
call fcn.00402170
lea edx, [ebp + 0x14]
mov dword [ebp + 0x14], 0
mov ecx, eax
mov dword [eax + 0x10], 0
mov dword [eax + 0x14], 7
call fcn.00402250
mov byte [ebp - 4], 4
cmp dword [edi + 4], 0
je 0x40e2b5
sub esp, 0x18
lea eax, [ebp + 0x4c]
mov ecx, esp
mov dword [ebp + 0x14], esp
push eax
call fcn.00402090
mov byte [ebp - 4], 5
mov ecx, dword [edi + 4]
push 0
mov eax, dword [ecx]
mov byte [ebp - 4], 4
call dword [eax + 4]
mov byte [ebp - 4], 1
lea ecx, [ebp + 0x4c]
call fcn.00402030
xor bl, bl
mov dword [ebp - 4], 0xffffffff
test esi, esi
je 0x40e2f8
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40e2e6
test eax, eax
je 0x40e2e6
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esi], 0
push 4
push esi
call fcn.00412ccd
add esp, 8
mov dword [ebp + 0x6c], 0
mov al, bl
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp + 0x70]
xor ecx, ebp
call fcn.00412c8c
lea esp, [ebp + 0x74]
pop ebp
ret 4