Function at 0x421dc8
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.00405f54
lea eax, [ebp - 0x1c]
mov edx, dword [0x41f780]
call fcn.00407100
xor eax, eax
push ebp
push 0x422142
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.00405f64
push eax
call fcn.004094b4
mov ebx, eax
cmp ebx, 0xffffffff
je 0x422111
push 0
push 0
push 0
push 2
push 0
push ebx
call fcn.004094c4
mov dword [ebp - 0x24], eax
cmp dword [ebp - 0x24], 0
je 0x42210b
push 0
push 0
push 0
push 4
mov eax, dword [ebp - 0x24]
push eax
call fcn.00409948
mov esi, eax
test esi, esi
je 0x422102
push 0
push ebx
call fcn.004096e4
cmp eax, 0x22
jbe 0x421e8e
push 0
push ebx
call fcn.004096e4
and eax, 3
test eax, eax
jne 0x421e8e
cmp dword [esi], 0x4742444a
jne 0x421e8e
cmp byte [esi + 4], 1
je 0x421e92
xor eax, eax
jmp 0x421e94
mov al, 1
mov byte [ebp - 0x1d], al
cmp byte [ebp - 0x1d], 0
je 0x421ee6
cmp byte [esi + 0x21], 0
je 0x421ee6
mov eax, dword [esi + 0x1d]
neg eax
mov dword [ebp - 0x28], eax
mov edi, esi
push 0
push ebx
call fcn.004096e4
shr eax, 2
test eax, eax
jle 0x421ed1
mov dword [ebp - 0x2c], 1
mov edx, dword [edi]
add dword [ebp - 0x28], edx
add edi, 4
inc dword [ebp - 0x2c]
dec eax
jne 0x421ec3
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 0x4220fc
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 0x421f5f
add edi, dword [ebp - 0x2c]
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x34], eax
lea ecx, [ebp - 8]
mov eax, esi
mov edx, dword [ebp - 0x34]
call fcn.00421d68
push 1
mov ecx, 0x7fffffff
mov edx, dword [ebp - 8]
mov eax, 0x422160
call fcn.0040c54c
mov ecx, eax
lea eax, [ebp - 8]
mov edx, 1
call fcn.00406048
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.0041fd04
pop ecx
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
test al, al
jne 0x421f01
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x421fd2
mov edx, dword [ebp + 8]
push edx
mov edx, dword [ebp + 8]
mov edx, eax
dec edx
xor eax, eax
call fcn.00421258
pop ecx
mov eax, dword [ebp + 8]
push eax
xor eax, eax
call fcn.004214cc
pop ecx
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov eax, dword [eax + 0x44]
test eax, eax
jbe 0x421fd2
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 0x42209b
add edi, dword [ebp - 0x2c]
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x34], eax
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
mov eax, dword [ebp - 0x2c]
add dword [ebp - 0x38], eax
lea ecx, [ebp - 8]
mov eax, esi
mov edx, dword [ebp - 0x34]
call fcn.00421d68
cmp dword [ebp - 0x38], 0
jle 0x422088
push dword [ebp - 8]
push 0x422170
lea ecx, [ebp - 0x3c]
mov eax, esi
mov edx, dword [ebp - 0x38]
call fcn.00421d68
push dword [ebp - 0x3c]
lea eax, [ebp - 8]
mov edx, 3
call fcn.00405db8
lea eax, [ebp - 0x1c]
push eax
mov eax, dword [ebp + 8]
mov eax, dword [eax - 4]
mov ecx, edi
mov dl, 1
call fcn.004232b8
cmp byte [ebp - 0x1c], 0
je 0x422088
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.0040cf34
test al, al
je 0x422088
mov eax, dword [ebp - 0x10]
call fcn.00405c3c
mov ecx, eax
inc ecx
lea eax, [ebp - 8]
mov edx, 1
call fcn.00406048
mov eax, dword [ebp + 8]
push eax
push 0
mov ecx, edi
mov edx, dword [ebp - 8]
mov al, 1
call fcn.00420364
pop ecx
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
test al, al
jne 0x421feb
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 0x4220ed
add edi, dword [ebp - 0x2c]
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
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.004209f4
pop ecx
lea edx, [ebp - 0x2c]
lea eax, [ebp - 0x30]
call fcn.00421d94
test al, al
jne 0x4220bf
push esi
call fcn.00409a60
mov eax, dword [ebp - 0x24]
push eax
call fcn.00409474
push ebx
call fcn.00409474
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x422149
lea eax, [ebp - 0x3c]
call fcn.004058a8
lea eax, [ebp - 0x1c]
mov edx, dword [0x41f780]
call fcn.004071d8
lea eax, [ebp - 8]
mov edx, 2
call fcn.004058cc
ret