Function at 0x4237a0
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x45ae57
mov eax, dword fs:[0]
push eax
sub esp, 0x50
mov eax, dword [0x47e3d8]
xor eax, ebp
mov dword [ebp - 0x14], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov ebx, ecx
mov esi, dword [ebp + 8]
push 4
mov dword [ebp - 0x24], 0
call fcn.004415e8
mov dword [ebp - 0x30], eax
mov dword [ebp - 4], 0
mov dword [eax], 0
mov dword [eax], 0xffffffff
mov dword [ebp - 4], 0xffffffff
mov dword [ebp - 0x24], eax
mov dword [ebp - 4], 1
lea eax, [ebp - 0x24]
push 2
push 0
push 0x40000000
push esi
push eax
call fcn.004257a0
mov esi, dword [ebp - 0x24]
test al, al
je 0x4239a5
test esi, esi
je 0x423861
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x423861
lea ecx, [ebp - 0x30]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov edi, eax
cmp edi, 0xffffffff
jne 0x42384a
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x423861
mov eax, dword [ebp - 0x30]
xor ecx, ecx
add ecx, edi
adc eax, 0
jne 0x42385a
test ecx, ecx
je 0x423861
mov bl, 1
jmp 0x4239a7
xorps xmm0, xmm0
mov dword [ebp - 0x18], 0
movq qword [ebp - 0x20], xmm0
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 0
mov byte [ebp - 4], 2
lea ecx, [ebp - 0x5c]
call fcn.00422c00
mov byte [ebp - 4], 3
lea edi, [ebx + 0x24]
mov eax, dword [edi]
lea ecx, [ebp - 0x5c]
cmp eax, dword [edi + 4]
jne 0x4238a9
call fcn.00422ca0
jmp 0x4238cd
push edi
call fcn.004271e0
lea eax, [edi + 0xc]
push eax
lea ecx, [ebp - 0x50]
call fcn.004271e0
lea eax, [edi + 0x18]
push eax
lea ecx, [ebp - 0x44]
call fcn.004271e0
mov eax, dword [edi + 0x24]
mov dword [ebp - 0x38], eax
lea edx, [ebp - 0x20]
lea ecx, [ebp - 0x5c]
call fcn.00423660
mov edi, dword [ebp - 0x1c]
sub edi, dword [ebp - 0x20]
mov dword [ebp - 0x28], 0
test esi, esi
jne 0x4238ed
xor bl, bl
jmp 0x423939
cmp dword [ebp - 0x20], 0
jne 0x4238f7
xor bl, bl
jmp 0x423921
mov eax, dword [esi]
cmp eax, 0xffffffff
jne 0x423902
xor bl, bl
jmp 0x423921
push 0
lea ecx, [ebp - 0x28]
push ecx
push edi
push dword [ebp - 0x20]
push eax
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
jne 0x42391b
xor bl, bl
jmp 0x423921
cmp edi, dword [ebp - 0x28]
sete bl
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x423939
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
je 0x423939
mov dword [esi], 0xffffffff
mov eax, dword [ebp - 0x1c]
sub eax, dword [ebp - 0x20]
cmp dword [ebp - 0x28], eax
jne 0x42394c
test bl, bl
je 0x42394c
mov bl, 1
jmp 0x42394e
xor bl, bl
mov byte [ebp - 4], 2
lea ecx, [ebp - 0x5c]
call fcn.00425870
mov byte [ebp - 4], 1
mov ecx, dword [ebp - 0x20]
test ecx, ecx
je 0x4239a7
mov edx, dword [ebp - 0x18]
mov eax, ecx
sub edx, ecx
cmp edx, 0x1000
jb 0x423984
mov ecx, dword [ecx - 4]
add edx, 0x23
sub eax, ecx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x4239fc
push edx
push ecx
call fcn.00441618
add esp, 8
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 0
jmp 0x4239a7
xor bl, bl
mov dword [ebp - 4], 0xffffffff
test esi, esi
je 0x4239dc
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x4239ca
test eax, eax
je 0x4239ca
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esi], 0
push 4
push esi
call fcn.00441618
add esp, 8
mov dword [ebp - 0x24], 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 - 0x14]
xor ecx, ebp
call fcn.004415d7
mov esp, ebp
pop ebp
ret 4
call fcn.00445b29
int3