Function at 0x421b00
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 - 8], edx
mov dword [ebp - 4], eax
mov eax, dword [ebp - 4]
call fcn.00405cd8
lea eax, [ebp - 0x1c]
mov edx, dword [0x41f4b8]
call fcn.00406eac
xor eax, eax
push ebp
push 0x421e7a
push dword fs:[eax]
mov dword fs:[eax], esp
mov byte [ebp - 0x1d], 0
push 0
push 0
push 3
push 0
push 1
push 0x80000000
mov eax, dword [ebp - 4]
call fcn.00405ce8
push eax
call sub.kernel32.dll_CreateFileA
mov ebx, eax
cmp ebx, 0xffffffff
je 0x421e49
push 0
push 0
push 0
push 2
push 0
push ebx
call sub.kernel32.dll_CreateFileMappingW
mov dword [ebp - 0x24], eax
cmp dword [ebp - 0x24], 0
je 0x421e43
push 0
push 0
push 0
push 4
mov eax, dword [ebp - 0x24]
push eax
call sub.kernel32.dll_MapViewOfFile
mov esi, eax
test esi, esi
je 0x421e3a
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
cmp eax, 0x22
jbe 0x421bc6
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
and eax, 3
test eax, eax
jne 0x421bc6
cmp dword [esi], 0x4742444a
jne 0x421bc6
cmp byte [esi + 4], 1
je 0x421bca
xor eax, eax
jmp 0x421bcc
mov al, 1
mov byte [ebp - 0x1d], al
cmp byte [ebp - 0x1d], 0
je 0x421c1e
cmp byte [esi + 0x21], 0
je 0x421c1e
mov eax, dword [esi + 0x1d]
neg eax
mov dword [ebp - 0x28], eax
mov edi, esi
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
shr eax, 2
test eax, eax
jle 0x421c09
mov dword [ebp - 0x2c], 1
mov edx, dword [edi]
add dword [ebp - 0x28], edx
add edi, 4
inc dword [ebp - 0x2c]
dec eax
jne 0x421bfb
mov eax, dword [ebp - 0x28]
shr eax, 8
mov edx, dword [ebp - 0x28]
shl edx, 0x18
or eax, edx
cmp eax, dword [esi + 0x1d]
sete byte [ebp - 0x1d]
cmp byte [ebp - 0x1d], 0
je 0x421e34
mov eax, esi
add eax, dword [esi + 9]
mov dword [ebp - 0x30], eax
xor edi, edi
xor eax, eax
mov dword [ebp - 0x34], eax
jmp 0x421c97
add edi, dword [ebp - 0x2c]
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x34], eax
lea ecx, [ebp - 8]
mov eax, esi
mov edx, dword [ebp - 0x34]
call fcn.00421aa0
push 1
mov ecx, 0x7fffffff
mov edx, dword [ebp - 8]
mov eax, 0x421e98
call fcn.0040c284
mov ecx, eax
lea eax, [ebp - 8]
mov edx, 1
call fcn.00405dcc
mov eax, dword [ebp + 8]
push eax
push 1
mov eax, dword [ebp - 8]
push eax
push 0
push 0
mov ecx, edi
mov dl, 1
mov al, 1
call fcn.0041fa3c
pop ecx
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
test al, al
jne 0x421c39
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x421d0a
mov edx, dword [ebp + 8]
push edx
mov edx, dword [ebp + 8]
mov edx, eax
dec edx
xor eax, eax
call fcn.00420f90
pop ecx
mov eax, dword [ebp + 8]
push eax
xor eax, eax
call fcn.00421204
pop ecx
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov eax, dword [eax + 0x44]
test eax, eax
jbe 0x421d0a
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 edi, edi
xor eax, eax
mov dword [ebp - 0x34], eax
xor eax, eax
mov dword [ebp - 0x38], eax
mov eax, esi
add eax, dword [esi + 0xd]
mov dword [ebp - 0x30], eax
jmp 0x421dd3
add edi, dword [ebp - 0x2c]
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x34], eax
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x38], eax
lea ecx, [ebp - 8]
mov eax, esi
mov edx, dword [ebp - 0x34]
call fcn.00421aa0
cmp dword [ebp - 0x38], 0
jle 0x421dc0
push dword [ebp - 8]
push 0x421ea8
lea ecx, [ebp - 0x3c]
mov eax, esi
mov edx, dword [ebp - 0x38]
call fcn.00421aa0
push dword [ebp - 0x3c]
lea eax, [ebp - 8]
mov edx, 3
call fcn.00405b3c
lea eax, [ebp - 0x1c]
push eax
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov ecx, edi
mov dl, 1
call fcn.00422ff0
cmp byte [ebp - 0x1c], 0
je 0x421dc0
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.0040cc6c
test al, al
je 0x421dc0
mov eax, dword [ebp - 0x10]
call fcn.004059c0
mov ecx, eax
inc ecx
lea eax, [ebp - 8]
mov edx, 1
call fcn.00405dcc
mov eax, dword [ebp + 8]
push eax
push 0
mov ecx, edi
mov edx, dword [ebp - 8]
mov al, 1
call fcn.0042009c
pop ecx
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
test al, al
jne 0x421d23
xor edi, edi
xor eax, eax
mov dword [ebp - 0x34], eax
mov eax, esi
add eax, dword [esi + 0x11]
mov dword [ebp - 0x30], eax
jmp 0x421e25
add edi, dword [ebp - 0x2c]
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x34], eax
mov eax, dword [ebp + 8]
push eax
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov edx, dword [eax + 0x40]
add edx, edi
xor ecx, ecx
mov eax, dword [ebp - 0x34]
call fcn.0042072c
pop ecx
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421acc
test al, al
jne 0x421df7
push esi
call sub.kernel32.dll_UnmapViewOfFile
mov eax, dword [ebp - 0x24]
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 0x421e81
lea eax, [ebp - 0x3c]
call fcn.0040562c
lea eax, [ebp - 0x1c]
mov edx, dword [0x41f4b8]
call fcn.00406f84
lea eax, [ebp - 8]
mov edx, 2
call fcn.00405650
ret