Function at 0x402790
Capabilities:
Check http status code
Clear file content
Get file size
Initialize winhttp library
Prepare http request
Read http header
Receive http response
Write file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x6c
mov eax, dword [0x42d008]
xor eax, ebp
mov dword [ebp - 4], eax
push esi
mov esi, dword [ebp + 8]
push edi
xor edi, edi
mov eax, dword [esi]
mov dword [esi + 0x24], edi
test eax, eax
je 0x4027b9
cmp dword [eax], edi
je 0x4027b9
lea ecx, [edi + 3]
jmp 0x4027bb
xor ecx, ecx
test eax, eax
je 0x4027c5
mov eax, dword [eax]
test eax, eax
jne 0x4027c7
xor eax, eax
push 0
push 0
push eax
push ecx
push 0x7d0
call fcn.00403b10
add esp, 4
push eax
call dword [sym.imp.WINHTTP.dll_WinHttpOpen]
mov ecx, eax
mov dword [ebp - 0x64], ecx
test ecx, ecx
jne 0x4027f7
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
jmp 0x402b55
movzx eax, word [esi + 0xc]
push 0
push eax
push dword [esi + 8]
push ecx
call dword [sym.imp.WINHTTP.dll_WinHttpConnect]
mov ecx, eax
mov dword [ebp - 0x6c], ecx
test ecx, ecx
jne 0x40281e
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
jmp 0x402b4c
cmp dword [esi + 4], edi
mov edx, 0x800008
push ebx
mov eax, 8
cmovne eax, edx
push eax
push 0
push 0
push 0
push dword [esi + 0x10]
push dword [esi + 0x14]
push ecx
call dword [sym.imp.WINHTTP.dll_WinHttpOpenRequest]
mov ebx, eax
mov dword [ebp - 0x68], ebx
test ebx, ebx
jne 0x402859
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
jmp 0x402b42
mov ecx, dword [esi]
test ecx, ecx
je 0x402896
mov edx, dword [ecx + 4]
test edx, edx
je 0x402896
xor eax, eax
mov dword [ebp - 0x48], 2
push 0
push dword [ecx + 0xc]
cmp edx, 1
push dword [ecx + 8]
sete al
cmp edx, 8
cmove eax, dword [ebp - 0x48]
push eax
push 1
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpSetCredentials]
test eax, eax
je 0x402b33
cmp dword [esi + 4], edi
je 0x402904
push 4
lea eax, [ebp - 0x48]
mov dword [ebp - 0x48], 0x80
push eax
push 0x54
push dword [ebp - 0x64]
call dword [sym.imp.WINHTTP.dll_WinHttpSetOption]
test eax, eax
je 0x402b33
or dword [ebp - 0x48], 0x200
call fcn.00407dc0
cmp eax, 0x6020000
jb 0x4028d5
or dword [ebp - 0x48], 0x800
push 4
lea eax, [ebp - 0x48]
push eax
push 0x54
push dword [ebp - 0x64]
call dword [sym.imp.WINHTTP.dll_WinHttpSetOption]
push 4
lea eax, [ebp - 0x4c]
mov dword [ebp - 0x4c], 0x2000
push eax
push 0x1f
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpSetOption]
test eax, eax
je 0x402b33
mov ecx, dword [esi + 0x28]
mov eax, dword [esi + 0x18]
mov dword [ebp - 0x48], eax
mov byte [ebp - 0x5d], 0
cmp ecx, 0xffffffff
je 0x402961
test eax, eax
jne 0x402961
cmp dword [esi + 0x14], edi
jne 0x402961
lea eax, [ebp - 0x50]
push eax
push ecx
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
je 0x402b33
cmp dword [ebp - 0x4c], edi
jl 0x402965
mov eax, dword [ebp - 0x50]
jg 0x402940
test eax, eax
je 0x402965
push eax
push str.Range:_bytes
lea eax, [ebp - 0x44]
push str._hs_d_
push eax
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
mov byte [ebp - 0x5d], 1
lea ecx, [ebp - 0x44]
jmp 0x402968
mov ecx, eax
jmp 0x402968
mov ecx, dword [ebp - 0x48]
mov eax, dword [esi + 0x20]
push 0
push eax
push eax
push dword [esi + 0x1c]
mov eax, ecx
neg eax
sbb eax, eax
push eax
push ecx
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpSendRequest]
test eax, eax
je 0x402b33
push 0
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpReceiveResponse]
test eax, eax
je 0x402b33
push 0
lea eax, [ebp - 0x5c]
mov dword [ebp - 0x5c], 4
push eax
lea eax, [esi + 0x24]
push eax
push 0
push 0x20000013
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpQueryHeaders]
test eax, eax
je 0x402b33
mov ecx, dword [esi + 0x24]
lea eax, [ecx - 0xc8]
cmp eax, 0x64
jae 0x402b3b
mov eax, dword [esi + 0x28]
cmp eax, 0xffffffff
je 0x402b3b
cmp byte [ebp - 0x5d], 0
je 0x402a23
cmp ecx, 0xc8
jne 0x402a23
push 0
push 0
xorps xmm0, xmm0
movq qword [ebp - 0x50], xmm0
push dword [ebp - 0x4c]
push dword [ebp - 0x50]
push eax
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
test eax, eax
je 0x402b33
push dword [esi + 0x28]
call dword [sym.imp.KERNEL32.dll_SetEndOfFile]
test eax, eax
je 0x402b33
mov byte [ebp - 0x5d], 0
push 0
lea eax, [ebp - 0x5c]
mov dword [ebp - 0x58], edi
push eax
lea eax, [ebp - 0x58]
push eax
push 0
push 0x20000005
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpQueryHeaders]
test eax, eax
jne 0x402a53
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp eax, 0x2f76
jne 0x402b33
cmp byte [ebp - 0x5d], 0
jne 0x402a6a
mov eax, dword [esi + 0x30]
test eax, eax
je 0x402a6a
push dword [ebp - 0x58]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
push 0x10000
push 0
call dword [sym.imp.KERNEL32.dll_GetProcessHeap]
push eax
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov dword [ebp - 0x48], eax
test eax, eax
je 0x402b33
mov dword [ebp - 0x54], edi
xor ebx, ebx
nop
lea ecx, [ebp - 0x54]
push ecx
push 0x10000
push eax
push dword [ebp - 0x68]
call dword [sym.imp.WINHTTP.dll_WinHttpReadData]
test eax, eax
je 0x402ade
push 0
lea eax, [ebp - 0x4c]
push eax
push dword [ebp - 0x54]
push dword [ebp - 0x48]
push dword [esi + 0x28]
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
je 0x402ade
mov eax, dword [ebp - 0x4c]
add ebx, eax
mov ecx, dword [esi + 0x2c]
test ecx, ecx
je 0x402ad4
push eax
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedExchangeAdd]
cmp dword [ebp - 0x54], edi
je 0x402ae6
mov eax, dword [ebp - 0x48]
jmp 0x402a90
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
mov eax, dword [ebp - 0x58]
test eax, eax
je 0x402b1c
cmp ebx, eax
jbe 0x402b1c
push 1
push 0
push 0
sub ebx, eax
push ebx
push dword [esi + 0x28]
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
test eax, eax
je 0x402b14
push dword [esi + 0x28]
call dword [sym.imp.KERNEL32.dll_SetEndOfFile]
test eax, eax
jne 0x402b1c
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
push dword [ebp - 0x48]
push 0
call dword [sym.imp.KERNEL32.dll_GetProcessHeap]
push eax
call dword [sym.imp.KERNEL32.dll_HeapFree]
mov ebx, dword [ebp - 0x68]
jmp 0x402b3b
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpCloseHandle]
push dword [ebp - 0x6c]
call dword [sym.imp.WINHTTP.dll_WinHttpCloseHandle]
pop ebx
push dword [ebp - 0x64]
call dword [sym.imp.WINHTTP.dll_WinHttpCloseHandle]
push edi
call dword [sym.imp.KERNEL32.dll_SetLastError]
mov ecx, dword [ebp - 4]
test edi, edi
pop edi
sete al
xor ecx, ebp
pop esi
call fcn.0041094e
mov esp, ebp
pop ebp
ret