Function at 0x50c9c0
Capabilities:
Get file size

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x5c629b
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0x54
push ebx
push esi
mov esi, ecx
xor ebx, ebx
push edi
mov dword [ebp - 0x1c], esi
mov eax, dword [esi + 0x88]
mov dword [ebp - 0x10], esp
cmp eax, ebx
mov dword [ebp - 4], ebx
je 0x50cba3
cmp eax, dword [ebp + 0xc]
jne 0x50cba3
mov eax, dword [esi + 0x20]
mov ecx, dword [eax + 0x10]
push ecx
call fcn.00584816
lea edx, [eax + eax + 0x14]
push edx
call fcn.0059cff9
mov edi, eax
add esp, 8
cmp edi, ebx
mov dword [ebp + 0xc], edi
jne 0x50ca43
push str.Not_enough_memory_during_call_to_CheckLast___n
mov ecx, esi
call fcn.005070a0
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 8
mov ecx, dword [esi + 0x20]
mov eax, dword [esi + 0x88]
push eax
mov edx, dword [ecx + 0x10]
push edx
push 0x66fe28
push edi
call fcn.0058572e
add esp, 0x10
push ebx
push ebx
push 3
push ebx
push 3
push closesocket
push edi
call dword [sym.imp.KERNEL32.dll_CreateFileW]
cmp eax, 0xffffffff
mov dword [ebp - 0x18], eax
jne 0x50caa5
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
lea eax, [ebp - 0x60]
push str.Error_reading_saved_last_part__errcode___d._n
push eax
call fcn.005851fa
add esp, 0xc
lea ecx, [ebp - 0x60]
push ecx
mov ecx, esi
call fcn.005070a0
mov ebx, dword [ebp - 0x1c]
mov edi, dword [ebp - 0x20]
jmp 0x50cb03
lea edx, [ebp - 0x14]
push edx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov edi, eax
cmp edi, 0xffffffff
jne 0x50cae6
test ebx, ebx
jne 0x50cae6
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x50cae6
push eax
lea eax, [ebp - 0x60]
push str.Error_during_GetFileSize____errcode___d._n
push eax
call fcn.005851fa
add esp, 0xc
lea ecx, [ebp - 0x60]
push ecx
mov ecx, esi
call fcn.005070a0
xor edi, edi
jmp 0x50caf9
mov edx, dword [ebp - 0x14]
push 1
push 0
push 0
push edx
call fcn.005870a0
add edi, eax
adc ebx, edx
mov eax, dword [ebp - 0x18]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov eax, dword [esi + 0x90]
mov ecx, dword [esi + 0x94]
mov edx, dword [esi + 0x40]
add eax, edi
adc ecx, ebx
cmp eax, edx
jne 0x50cc05
cmp ecx, dword [esi + 0x44]
jne 0x50cc05
push 0x50
call fcn.0059cff9
mov ecx, eax
add esp, 4
mov dword [ebp - 0x18], ecx
test ecx, ecx
mov byte [ebp - 4], 1
je 0x50cb47
call fcn.0050d790
mov edi, eax
jmp 0x50cb49
xor edi, edi
test edi, edi
mov byte [ebp - 4], 0
jne 0x50cb63
push str.Not_enough_memory_during_call_to_CheckLast___n
mov ecx, esi
call fcn.005070a0
mov ecx, dword [ebp + 0xc]
push ecx
jmp 0x50cb9b
mov edx, dword [esi + 0x6c]
mov ebx, dword [ebp + 0xc]
mov dword [edi + 0x44], edx
mov eax, dword [esi + 0x74]
push ebx
mov ecx, edi
mov dword [edi + 0x48], eax
call fcn.0050d860
test eax, eax
je 0x50cbb6
mov ecx, edi
call fcn.0050d7d0
push edi
call fcn.0059d022
add esp, 4
mov ecx, esi
push str.Error_setting_filename_during_call_to_CheckLast___n
call fcn.005070a0
push ebx
call fcn.0059d022
add esp, 4
mov ecx, dword [ebp - 0xc]
pop edi
pop esi
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret 8
mov eax, dword [esi + 0x88]
mov ecx, dword [esi + 0x30]
cmp eax, ecx
mov dword [esi + 0x64], 0
jg 0x50cbcc
mov eax, ecx
push str.The_last_chunk_is_full._n
mov ecx, esi
mov dword [esi + 0x2c], eax
call fcn.005070a0
mov ecx, dword [esi + 0x24]
mov edx, dword [ecx + 0x38]
mov dword [edi + 0x38], edx
mov eax, dword [esi + 0x24]
mov dword [eax + 0x38], edi
mov dword [esi + 0x24], edi
mov dword [edi + 0x14], 1
mov dword [edi], 0
mov ecx, dword [esi + 0x88]
mov dword [edi + 0x40], ecx
jmp 0x50cb9a
mov ebx, dword [ebp + 0xc]
jmp 0x50cb9a