Function at 0x53b2c4
Capabilities:
Get file size
Read file via mapping

Disassembly:
push ebp
mov ebp, esp
mov ecx, 7
push 0
push 0
dec ecx
jne 0x53b2cc
push ecx
push ebx
push esi
push edi
mov dword [ebp - 0x10], edx
mov dword [ebp - 0xc], eax
mov eax, dword [ebp - 0xc]
call fcn.004040cc
mov eax, dword [ebp - 0x10]
call fcn.004040cc
lea esi, [ebp - 8]
xor eax, eax
push ebp
push 0x53b5af
push dword fs:[eax]
mov dword fs:[eax], esp
xor ecx, ecx
push ebp
push 0x53b57d
push dword fs:[ecx]
mov dword fs:[ecx], esp
push 0
push 0x80
push 3
push 0
push 1
push 0x80000000
mov eax, dword [ebp - 0x10]
call fcn.004040dc
push eax
call sub.kernel32.dll_CreateFileA_1
mov dword [ebp - 0x34], eax
cmp dword [ebp - 0x34], 0xffffffff
jne 0x53b342
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x53b58c
push 0
mov eax, dword [ebp - 0x34]
push eax
call sub.kernel32.dll_GetFileSize_1
mov ebx, eax
push 0
push 0
push 0
push 2
push 0
mov eax, dword [ebp - 0x34]
push eax
call sub.kernel32.dll_CreateFileMappingA
mov dword [ebp - 0x38], eax
cmp dword [ebp - 0x38], 0
jne 0x53b378
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x53b58c
push 0
push 0
push 0
push 4
mov eax, dword [ebp - 0x38]
push eax
call sub.kernel32.dll_MapViewOfFile
mov dword [ebp - 4], eax
xor eax, eax
mov dword [esi], eax
mov edx, ebx
test edx, edx
jl 0x53b3f0
inc edx
xor eax, eax
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax], 0x43
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 1], 0x48
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 2], 0x6f
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 3], 0x73
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 4], 0x74
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 5], 0x52
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 6], 0x65
jne 0x53b3ec
mov ecx, dword [ebp - 4]
cmp byte [ecx + eax + 7], 0x63
jne 0x53b3ec
mov dword [esi], eax
jmp 0x53b3f0
inc eax
dec edx
jne 0x53b399
add dword [esi], 8
cmp ebx, dword [esi]
jle 0x53b558
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov eax, dword [ebp - 0x3c]
lea edx, [ebp - 0x14]
call fcn.00408c14
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov eax, dword [ebp - 0x3c]
lea edx, [ebp - 0x18]
call fcn.00408c14
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov edx, dword [ebp - 0x3c]
lea eax, [ebp - 0x1c]
call fcn.00403d34
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov eax, dword [ebp - 0x3c]
lea edx, [ebp - 0x20]
call fcn.0053b1cc
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov edx, dword [ebp - 0x3c]
lea eax, [ebp - 0x28]
call fcn.00403d34
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov edx, dword [ebp - 0x3c]
lea eax, [ebp - 0x24]
call fcn.00403d34
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b144
pop ecx
mov edx, dword [ebp - 0x3c]
lea eax, [ebp - 0x30]
call fcn.00403d34
push ebp
lea eax, [ebp - 0x3c]
call fcn.0053b260
pop ecx
mov edx, dword [ebp - 0x3c]
lea eax, [ebp - 0x2c]
call fcn.00403d34
mov eax, dword [ebp - 0x14]
call fcn.00403f18
test eax, eax
je 0x53b536
mov eax, dword [ebp - 0x18]
call fcn.00403f18
test eax, eax
je 0x53b536
lea eax, [ebp - 0x3c]
mov ecx, dword [ebp - 0x14]
mov edx, dword [ebp - 0xc]
call fcn.00403f64
mov eax, dword [ebp - 0x3c]
call fcn.00539a6c
sub eax, 3
je 0x53b550
dec eax
je 0x53b558
mov eax, dword [ebp - 0x1c]
push eax
mov eax, dword [ebp - 0x20]
push eax
mov eax, dword [0x5bc024]
mov eax, dword [eax]
push eax
mov eax, dword [ebp - 0x2c]
push eax
mov eax, dword [ebp - 0x24]
push eax
mov eax, dword [ebp - 0x28]
push eax
mov eax, dword [0x5bc024]
mov eax, dword [eax]
push eax
mov eax, dword [0x5bc024]
mov eax, dword [eax]
push eax
lea edx, [ebp - 0x3c]
mov eax, dword [ebp - 0x30]
call fcn.0046a0a4
mov eax, dword [ebp - 0x3c]
push eax
mov eax, dword [0x5bc024]
mov eax, dword [eax]
push eax
mov eax, dword [0x5bc024]
mov eax, dword [eax]
push eax
mov ecx, dword [ebp - 0x18]
mov edx, dword [ebp - 0x14]
mov eax, dword [ebp - 0xc]
call fcn.00539cf0
cmp ebx, dword [esi]
jle 0x53b550
mov eax, dword [ebp - 4]
mov edx, dword [esi]
mov al, byte [eax + edx]
cmp al, 0x80
jne 0x53b54a
inc dword [esi]
jmp 0x53b550
inc dword [esi]
cmp ebx, dword [esi]
jg 0x53b53a
cmp ebx, dword [esi]
jg 0x53b3fb
mov eax, dword [ebp - 4]
push eax
call sub.kernel32.dll_UnmapViewOfFile
mov eax, dword [ebp - 0x38]
push eax
call sub.kernel32.dll_CloseHandle_1
mov eax, dword [ebp - 0x34]
push eax
call sub.kernel32.dll_CloseHandle_1
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
jmp 0x53b587
call fcn.00539994
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x53b5b6
lea eax, [ebp - 0x3c]
call fcn.00403c9c
lea eax, [ebp - 0x30]
mov edx, 0xa
call fcn.00403cc0
ret