Function at 0x425520
Capabilities:
Get file size
Read file via mapping

Disassembly:
push ebp
mov ebp, esp
add esp, 0xffffffc4
push ebx
push esi
push edi
xor edx, edx
mov dword [ebp - 0x3c], edx
mov dword [ebp - 0x38], edx
mov dword [ebp - 4], edx
mov ebx, eax
lea eax, [ebp - 0x18]
mov edx, dword [0x42277c]
call fcn.004070e8
xor eax, eax
push ebp
push 0x4258f7
push dword fs:[eax]
mov dword fs:[eax], esp
mov byte [ebp - 0x19], 0
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x425582
push 0
push 0
push 3
push 0
push 1
push 0x80000000
mov eax, ebx
call fcn.00406764
push eax
call sub.kernel32.dll_CreateFileW_1
mov ebx, eax
jmp 0x4255b0
push 0
push 0
push 3
push 0
push 1
push 0x80000000
lea eax, [ebp - 0x38]
mov edx, ebx
mov ecx, 0
call fcn.0040691c
mov eax, dword [ebp - 0x38]
call fcn.00406040
push eax
call sub.kernel32.dll_CreateFileA
mov ebx, eax
cmp ebx, 0xffffffff
je 0x4258c3
push 0
push 0
push 0
push 2
push 0
push ebx
call sub.kernel32.dll_CreateFileMappingW
mov dword [ebp - 0x20], eax
cmp dword [ebp - 0x20], 0
je 0x4258bd
push 0
push 0
push 0
push 4
mov eax, dword [ebp - 0x20]
push eax
call sub.kernel32.dll_MapViewOfFile
mov esi, eax
test esi, esi
je 0x4258b4
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
cmp eax, 0x22
jbe 0x42561b
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
and eax, 3
test eax, eax
jne 0x42561b
cmp dword [esi], 0x4742444a
jne 0x42561b
cmp byte [esi + 4], 1
je 0x42561f
xor eax, eax
jmp 0x425621
mov al, 1
mov byte [ebp - 0x19], al
cmp byte [ebp - 0x19], 0
je 0x425673
cmp byte [esi + 0x21], 0
je 0x425673
mov eax, dword [esi + 0x1d]
neg eax
mov dword [ebp - 0x24], eax
mov edi, esi
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
shr eax, 2
test eax, eax
jle 0x42565e
mov dword [ebp - 0x28], 1
mov edx, dword [edi]
add dword [ebp - 0x24], edx
add edi, 4
inc dword [ebp - 0x28]
dec eax
jne 0x425650
mov eax, dword [ebp - 0x24]
shr eax, 8
mov edx, dword [ebp - 0x24]
shl edx, 0x18
or eax, edx
cmp eax, dword [esi + 0x1d]
sete byte [ebp - 0x19]
cmp byte [ebp - 0x19], 0
je 0x4258ae
mov eax, esi
add eax, dword [esi + 9]
mov dword [ebp - 0x2c], eax
xor eax, eax
mov dword [ebp - 0x30], eax
xor eax, eax
mov dword [ebp - 0x34], eax
jmp 0x4256fa
mov eax, dword [ebp - 0x28]
add dword [ebp - 0x30], eax
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
mov eax, dword [ebp - 0x28]
add dword [ebp - 0x34], eax
lea ecx, [ebp - 4]
mov eax, esi
mov edx, dword [ebp - 0x34]
call fcn.00425484
push 1
mov edi, dword [0x557100]
mov edi, dword [edi]
mov ecx, 0x7fffffff
mov edx, dword [ebp - 4]
mov eax, 0x425918
call edi
mov ecx, eax
lea eax, [ebp - 4]
mov edx, 1
call fcn.00406dfc
mov eax, dword [ebp - 0x30]
push eax
push 1
mov eax, dword [ebp - 4]
push eax
push 0
push 0
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov cl, 1
mov dl, 1
call fcn.00422b28
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
test al, al
jne 0x425691
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x42576d
mov edx, dword [ebp + 8]
push edx
mov edx, dword [ebp + 8]
mov edx, eax
dec edx
xor eax, eax
call fcn.004247e4
pop ecx
mov eax, dword [ebp + 8]
push eax
xor eax, eax
call fcn.00424a58
pop ecx
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov eax, dword [eax + 0x44]
test eax, eax
jbe 0x42576d
mov edx, dword [ebp + 8]
mov edx, dword [edx - 4]
mov edx, dword [edx + 0xc]
lea edx, [edx + edx*4]
mov ecx, dword [ebp + 8]
mov ecx, dword [ecx - 4]
mov ecx, dword [ecx + 8]
mov edi, dword [ebp + 8]
sub eax, dword [ecx + edx*4 - 0x10]
mov ecx, dword [ebp + 8]
mov ecx, dword [ebp + 8]
mov ecx, dword [ecx - 4]
mov ecx, dword [ecx + 8]
mov dword [ecx + edx*4 - 0xc], eax
xor eax, eax
mov dword [ebp - 0x30], eax
xor eax, eax
mov dword [ebp - 0x34], eax
xor edi, edi
mov eax, esi
add eax, dword [esi + 0xd]
mov dword [ebp - 0x2c], eax
jmp 0x425845
mov eax, dword [ebp - 0x28]
add dword [ebp - 0x30], eax
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
mov eax, dword [ebp - 0x28]
add dword [ebp - 0x34], eax
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
add edi, dword [ebp - 0x28]
lea ecx, [ebp - 4]
mov eax, esi
mov edx, dword [ebp - 0x34]
call fcn.00425484
test edi, edi
jle 0x42582f
push dword [ebp - 4]
push 0x425928
lea ecx, [ebp - 0x3c]
mov eax, esi
mov edx, edi
call fcn.00425484
push dword [ebp - 0x3c]
lea eax, [ebp - 4]
mov edx, 3
call fcn.00406b7c
lea eax, [ebp - 0x18]
push eax
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov ecx, dword [eax + 0x40]
add ecx, dword [ebp - 0x30]
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov dl, 1
call fcn.004274c4
cmp byte [ebp - 0x18], 0
je 0x42582f
mov ecx, dword [0x557464]
mov ecx, dword [ecx]
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call ecx
test al, al
je 0x42582f
mov eax, dword [ebp - 0xc]
call fcn.00406988
mov ecx, eax
inc ecx
lea eax, [ebp - 4]
mov edx, 1
call fcn.00406dfc
mov eax, dword [ebp - 0x30]
push eax
push 0
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov ecx, dword [ebp - 4]
mov dl, 1
call fcn.00422df8
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
test al, al
jne 0x425786
xor eax, eax
mov dword [ebp - 0x30], eax
xor eax, eax
mov dword [ebp - 0x34], eax
mov eax, esi
add eax, dword [esi + 0x11]
mov dword [ebp - 0x2c], eax
jmp 0x42589f
mov eax, dword [ebp - 0x28]
add dword [ebp - 0x30], eax
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
mov eax, dword [ebp - 0x28]
add dword [ebp - 0x34], eax
push 0
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov ecx, dword [eax + 0x40]
add ecx, dword [ebp - 0x30]
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov edx, dword [ebp - 0x34]
call fcn.00423220
lea edx, [ebp - 0x28]
lea eax, [ebp - 0x2c]
call fcn.004254ec
test al, al
jne 0x42586c
push esi
call sub.kernel32.dll_UnmapViewOfFile
mov eax, dword [ebp - 0x20]
push eax
call sub.kernel32.dll_CloseHandle_1
push ebx
call sub.kernel32.dll_CloseHandle_1
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x4258fe
lea eax, [ebp - 0x3c]
call fcn.004066c8
lea eax, [ebp - 0x38]
call fcn.00405984
lea eax, [ebp - 0x18]
mov edx, dword [0x42277c]
call fcn.004071c0
lea eax, [ebp - 4]
call fcn.004066c8
ret