Function at 0x450540
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push ecx
mov ecx, 0x19
push 0
push 0
dec ecx
jne 0x450549
xchg dword [ebp - 4], ecx
push ebx
push esi
push edi
mov ebx, ecx
mov dword [ebp - 4], edx
mov dword [ebp - 0x24], eax
mov esi, dword [ebp + 8]
mov eax, dword [ebp - 4]
call fcn.004061a8
xor eax, eax
push ebp
push 0x450f14
push dword fs:[eax]
mov dword fs:[eax], esp
mov byte [ebp - 0x25], 0
cmp dword [ebp - 4], 0
je 0x450e72
cmp dword [ebp - 0x24], 0
jne 0x4507ad
lea edx, [ebp - 8]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x1f8]
cmp byte [ebp + 0xc], 0
jne 0x45078f
mov eax, 0xfa
call fcn.00435dd0
test al, al
je 0x4505c0
push 0
call sub.user32.dll_MessageBeep
jmp 0x450e72
push 0x7fffffff
mov edi, dword [0x529f48]
mov edi, dword [edi]
mov ecx, 1
mov edx, dword [ebp - 8]
mov eax, 0x450f38
call edi
test eax, eax
jle 0x450609
lea edx, [ebp - 0x94]
mov eax, dword [ebp - 8]
call fcn.00433f90
mov edx, dword [ebp - 0x94]
lea eax, [ebp - 8]
call fcn.00406214
lea edx, [ebp - 0xc]
mov eax, dword [ebp - 8]
call fcn.0040e5b0
jmp 0x450618
lea ecx, [ebp - 0xc]
mov dl, 1
mov eax, 0x10
call fcn.00436514
lea edx, [ebp - 0x98]
mov eax, dword [ebp - 8]
call fcn.0040e570
mov edx, dword [ebp - 0x98]
lea eax, [ebp - 8]
call fcn.00406214
lea eax, [ebp - 8]
mov edx, 0x450f48
call fcn.00406514
lea eax, [ebp - 8]
mov edx, 0x105
call fcn.0040647c
lea edx, [ebp - 0x10]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x2ac]
lea eax, [ebp - 0x8d]
mov edx, 0x4c
call fcn.00409dc0
mov dword [ebp - 0x8d], 0x4c
mov dword [ebp - 0x89], ebx
mov dword [ebp - 0x75], 1
mov dword [ebp - 0x6d], 0x104
mov dword [ebp - 0x59], 0x8004
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x4506f4
mov eax, dword [ebp - 8]
call fcn.0040624c
mov dword [ebp - 0x71], eax
mov eax, dword [ebp - 0xc]
call fcn.0040624c
mov dword [ebp - 0x61], eax
mov eax, dword [ebp - 0x10]
call fcn.0040624c
mov dword [ebp - 0x5d], eax
mov eax, 0x450f4c
mov dword [ebp - 0x81], eax
mov eax, 0x450f68
mov dword [ebp - 0x51], eax
lea eax, [ebp - 0x8d]
push eax
call sub.comdlg32.dll_GetSaveFileNameW
test eax, eax
je 0x450e72
lea eax, [ebp - 8]
mov edx, dword [ebp - 0x71]
call fcn.0040636c
jmp 0x4507b8
lea eax, [ebp - 0x14]
mov edx, dword [ebp - 8]
mov ecx, 0
call fcn.00406404
lea eax, [ebp - 0x18]
mov edx, dword [ebp - 0xc]
mov ecx, 0
call fcn.00406404
lea eax, [ebp - 0x1c]
mov edx, dword [ebp - 0x10]
mov ecx, 0
call fcn.00406404
mov eax, dword [ebp - 0x14]
call fcn.00405bbc
mov dword [ebp - 0x71], eax
mov eax, dword [ebp - 0x18]
call fcn.00405bbc
mov dword [ebp - 0x61], eax
mov eax, dword [ebp - 0x1c]
call fcn.00405bbc
mov dword [ebp - 0x5d], eax
mov eax, 0x450f74
mov dword [ebp - 0x81], eax
mov eax, 0x450f84
mov dword [ebp - 0x51], eax
lea eax, [ebp - 0x8d]
push eax
call sub.comdlg32.dll_GetSaveFileNameA
test eax, eax
je 0x450e72
lea eax, [ebp - 0x9c]
mov edx, dword [ebp - 0x71]
mov ecx, 0
call fcn.004057b4
mov edx, dword [ebp - 0x9c]
lea eax, [ebp - 8]
call fcn.004063dc
jmp 0x4507b8
lea edx, [ebp - 0xa0]
mov eax, dword [ebp - 8]
call fcn.00433f90
mov edx, dword [ebp - 0xa0]
lea eax, [ebp - 8]
call fcn.00406214
jmp 0x4507b8
lea eax, [ebp - 8]
mov edx, dword [ebp - 0x24]
call fcn.00406214
push ebp
mov eax, dword [ebp - 8]
call fcn.004501ec
pop ecx
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x4507ef
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
mov eax, dword [ebp - 8]
call fcn.0040624c
push eax
call sub.kernel32.dll_CreateFileW_1
mov ebx, eax
jmp 0x450824
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
lea eax, [ebp - 0xa4]
mov edx, dword [ebp - 8]
mov ecx, 0
call fcn.00406404
mov eax, dword [ebp - 0xa4]
call fcn.00405bbc
push eax
call sub.kernel32.dll_CreateFileA
mov ebx, eax
cmp ebx, 0xffffffff
jne 0x450950
push 0x7fffffff
lea edx, [ebp - 0xa8]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x1f8]
mov edx, dword [ebp - 0xa8]
mov edi, dword [0x529f48]
mov edi, dword [edi]
mov ecx, 1
mov eax, 0x450f38
call edi
test eax, eax
jne 0x450950
push 0x450f98
lea edx, [ebp - 0xb4]
xor eax, eax
call fcn.00433e9c
mov eax, dword [ebp - 0xb4]
lea edx, [ebp - 0xb0]
call fcn.0040e570
mov eax, dword [ebp - 0xb0]
lea edx, [ebp - 0xac]
call fcn.00433f50
push dword [ebp - 0xac]
push 0x450f38
lea edx, [ebp - 0xb8]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x1f8]
push dword [ebp - 0xb8]
lea eax, [ebp - 8]
mov edx, 4
call fcn.00406664
push 0x450fc4
push 0x450fe8
push 0x45100c
lea edx, [ebp - 8]
mov ecx, 0x451038
xor eax, eax
call fcn.00436850
push ebp
mov eax, dword [ebp - 8]
call fcn.004501ec
pop ecx
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x45091b
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
mov eax, dword [ebp - 8]
call fcn.0040624c
push eax
call sub.kernel32.dll_CreateFileW_1
mov ebx, eax
jmp 0x450950
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
lea eax, [ebp - 0xbc]
mov edx, dword [ebp - 8]
mov ecx, 0
call fcn.00406404
mov eax, dword [ebp - 0xbc]
call fcn.00405bbc
push eax
call sub.kernel32.dll_CreateFileA
mov ebx, eax
cmp ebx, 0xffffffff
je 0x450e72
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x200]
test al, al
je 0x450deb
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
mov dword [ebp - 0x2c], eax
lea eax, [ebp - 8]
xor edx, edx
call fcn.00406214
cmp dword [ebp - 0x2c], 0
jbe 0x450a3e
lea ecx, [ebp - 8]
mov edx, 0x451060
mov eax, dword [ebp - 4]
call fcn.0044ff60
lea eax, [ebp - 8]
call fcn.004056e0
call fcn.00406470
cmp eax, 0x1f
jne 0x450a34
lea ecx, [ebp - 0xc0]
mov edx, 0x451088
mov eax, dword [ebp - 4]
call fcn.0044ff60
cmp dword [ebp - 0xc0], 0
je 0x4509e5
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x210]
mov byte [ebp - 0x41], al
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x220]
jmp 0x4509fc
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x218]
mov byte [ebp - 0x41], al
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x228]
cmp byte [ebp - 0x41], 0
jne 0x450a0e
lea eax, [ebp - 8]
xor edx, edx
call fcn.00406214
jmp 0x450a3e
sub al, 1
jb 0x450a16
je 0x450a25
jmp 0x450a3e
lea eax, [ebp - 8]
mov edx, 9
call fcn.0040647c
jmp 0x450a3e
lea eax, [ebp - 8]
mov edx, 0x14
call fcn.0040647c
jmp 0x450a3e
lea eax, [ebp - 8]
xor edx, edx
call fcn.00406214
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
test eax, eax
jbe 0x450a5b
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
cmp eax, dword [ebp - 0x2c]
jb 0x450a5f
xor eax, eax
jmp 0x450a61
mov al, 1
mov byte [ebp - 0x41], al
cmp byte [ebp - 0x41], 0
jne 0x450a74
cmp dword [ebp - 8], 0
je 0x450ddd
push 0
push 0
push 0
push 4
push 0
push ebx
call sub.kernel32.dll_CreateFileMappingW
mov dword [ebp - 0x3c], eax
cmp dword [ebp - 0x3c], 0
je 0x450ddd
push 0
push 0
push 0
push 0xf001f
mov eax, dword [ebp - 0x3c]
push eax
call sub.kernel32.dll_MapViewOfFile
mov dword [ebp - 0x40], eax
cmp dword [ebp - 0x40], 0
je 0x450dd4
cmp dword [ebp - 8], 0
je 0x450d3a
lea edx, [ebp - 0x14]
mov eax, dword [ebp - 8]
call fcn.0040e2a0
mov eax, dword [ebp - 0x2c]
mov dword [ebp - 0x30], eax
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
dec eax
push eax
push 0
lea eax, [ebp - 0x14]
xor edx, edx
call fcn.00405710
call fcn.00405894
add eax, 2
push eax
lea eax, [ebp - 0xc4]
mov ecx, dword [ebp - 0x14]
mov edx, 0x4510b4
call fcn.00405944
mov eax, dword [ebp - 0xc4]
call fcn.00405bbc
mov edi, dword [0x529d14]
mov edi, dword [edi]
mov edx, dword [ebp - 0x40]
pop ecx
call edi
mov dword [ebp - 0x30], eax
cmp dword [ebp - 0x30], 0
jl 0x450d30
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
push eax
push 0
mov edi, dword [0x529d14]
mov edi, dword [edi]
mov eax, 0x4510b8
mov ecx, 0xb
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x34], eax
cmp dword [ebp - 0x34], 0
jge 0x450b78
mov eax, dword [ebp - 0x2c]
push eax
push 0
push 0
push 0
mov edi, dword [0x529d14]
mov edi, dword [edi]
mov eax, 0x4510c4
mov ecx, 9
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x34], eax
jmp 0x450b7c
add dword [ebp - 0x34], 2
cmp dword [ebp - 0x34], 0
jl 0x450d30
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
push eax
push 0x7fffffff
mov edi, dword [0x529d14]
mov edi, dword [edi]
mov eax, 0x4510b8
mov ecx, 0xb
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x38], eax
cmp dword [ebp - 0x38], 0
jge 0x450bbd
mov eax, dword [ebp - 0x2c]
mov dword [ebp - 0x38], eax
jmp 0x450bc1
add dword [ebp - 0x38], 2
push 0
mov ecx, dword [ebp - 0x38]
sub ecx, dword [ebp - 0x34]
mov edx, dword [ebp - 0x40]
add edx, dword [ebp - 0x34]
lea eax, [ebp - 0x18]
call fcn.00405638
lea edx, [ebp - 0xc]
mov eax, dword [ebp - 0x18]
call fcn.0040e010
mov ecx, 0x4510dc
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.004504cc
test al, al
je 0x450d30
mov ecx, 0x451100
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.004504cc
test al, al
je 0x450d30
mov ecx, 0x451088
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.004504cc
test al, al
je 0x450d30
mov ecx, 0x45112c
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.004504cc
test al, al
je 0x450d30
lea ecx, [ebp - 0xc8]
mov edx, 0x45112c
mov eax, dword [ebp - 0xc]
call fcn.0044ff60
cmp dword [ebp - 0xc8], 0
jne 0x450c8e
mov ecx, 0x451148
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.004504cc
test al, al
je 0x450d30
mov ecx, 0x451174
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.004504cc
test al, al
je 0x450d30
lea ecx, [ebp - 8]
mov edx, 0x4511a4
mov eax, dword [ebp - 0xc]
call fcn.0044ff60
cmp dword [ebp - 8], 0
je 0x450cce
lea eax, [ebp - 8]
call fcn.004056e0
call fcn.00406470
push eax
mov eax, dword [ebp - 8]
call fcn.0040624c
mov edx, eax
mov edi, dword [0x52a18c]
mov edi, dword [edi]
xor eax, eax
pop ecx
call edi
mov dword [ebp - 0x30], eax
jmp 0x450cd5
mov dword [ebp - 0x30], 1
lea eax, [ebp - 0xcc]
push eax
mov eax, dword [ebp - 0x30]
inc eax
mov cx, 0x30
mov edx, 1
call fcn.0040cd28
mov eax, dword [ebp - 0xcc]
push eax
lea eax, [ebp - 4]
mov ecx, 0x451060
mov edx, 0x4511a4
call fcn.00450350
mov eax, dword [ebp - 0x38]
cmp eax, dword [ebp - 0x2c]
jae 0x450d25
mov ecx, dword [ebp - 0x2c]
sub ecx, eax
mov edx, dword [ebp - 0x40]
add edx, dword [ebp - 0x34]
mov eax, dword [ebp - 0x40]
add eax, dword [ebp - 0x38]
call fcn.00403248
mov eax, dword [ebp - 0x38]
sub eax, dword [ebp - 0x34]
sub dword [ebp - 0x2c], eax
jmp 0x450d3a
cmp dword [ebp - 0x30], 0xffffffff
jne 0x450acd
cmp byte [ebp - 0x41], 0
je 0x450dcb
push 0
push 0
push 0
push ebx
call sub.kernel32.dll_SetFilePointer_1
xor eax, eax
mov dword [ebp - 0x30], eax
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
inc eax
push eax
push 0x7fffffff
mov edi, dword [0x529d14]
mov edi, dword [edi]
mov eax, 0x4510b8
mov ecx, 0xb
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x30], eax
cmp dword [ebp - 0x30], 0xffffffff
je 0x450daa
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
mov edi, eax
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
shr eax, 2
sub edi, eax
mov eax, dword [ebp - 0x2c]
sub eax, dword [ebp - 0x30]
cmp edi, eax
jbe 0x450d55
cmp dword [ebp - 0x30], 0xffffffff
je 0x450dcb
add dword [ebp - 0x30], 2
mov eax, dword [ebp - 0x30]
sub dword [ebp - 0x2c], eax
mov edx, dword [ebp - 0x40]
mov eax, dword [ebp - 0x40]
add eax, dword [ebp - 0x30]
mov ecx, dword [ebp - 0x2c]
call fcn.00403248
mov eax, dword [ebp - 0x40]
push eax
call sub.kernel32.dll_UnmapViewOfFile
mov eax, dword [ebp - 0x3c]
push eax
call sub.kernel32.dll_CloseHandle_1
push 0
push 0
mov eax, dword [ebp - 0x2c]
push eax
push ebx
call sub.kernel32.dll_SetFilePointer_1
push dword [ebp - 4]
push 0x4511bc
push 0x4511bc
lea eax, [ebp - 4]
mov edx, 3
call fcn.00406664
lea edx, [ebp - 0x14]
mov eax, dword [ebp - 4]
call fcn.0040e2a0
push 0
lea eax, [ebp - 0x2c]
push eax
lea eax, [ebp - 0x14]
xor edx, edx
call fcn.00405710
call fcn.00405894
push eax
mov eax, dword [ebp - 0x14]
push eax
push ebx
call sub.kernel32.dll_WriteFile_1
cmp eax, 1
sbb eax, eax
inc eax
mov byte [ebp - 0x25], al
push ebx
call sub.kernel32.dll_SetEndOfFile_1
push ebx
call sub.kernel32.dll_CloseHandle_1
cmp dword [ebp - 0x24], 0
sete al
and al, byte [ebp + 0xc]
je 0x450e72
lea eax, [ebp - 0x20]
call fcn.00408064
push eax
push 0x4511c4
push esi
mov eax, dword [esi]
call dword [eax]
test eax, eax
jne 0x450e72
mov dl, 1
mov eax, dword [ebp - 0x20]
mov ecx, dword [eax]
call dword [ecx + 0x24]
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x450f1e
lea eax, [ebp - 0xcc]
mov edx, 2
call fcn.004061b8
lea eax, [ebp - 0xc4]
call fcn.00405500
lea eax, [ebp - 0xc0]
call fcn.004061b0
lea eax, [ebp - 0xbc]
call fcn.00405500
lea eax, [ebp - 0xb8]
mov edx, 5
call fcn.004061b8
lea eax, [ebp - 0xa4]
call fcn.00405500
lea eax, [ebp - 0xa0]
call fcn.004061b0
lea eax, [ebp - 0x9c]
call fcn.00405500
lea eax, [ebp - 0x98]
mov edx, 2
call fcn.004061b8
lea eax, [ebp - 0x20]
call fcn.00408064
lea eax, [ebp - 0x1c]
mov edx, 3
call fcn.00405524
lea eax, [ebp - 0x10]
mov edx, 4
call fcn.004061b8
ret