Function at 0x4b5380
Capabilities:
Get file size
Read file on windows

Disassembly:
sub esp, 0x130
mov eax, dword [0x4f6140]
xor eax, esp
mov dword [esp + 0x12c], eax
mov eax, dword [esp + 0x134]
push ebx
mov ebx, dword [esp + 0x13c]
mov dword [esp + 0x1c], eax
mov eax, dword [esp + 0x140]
push ebp
push esi
push edi
mov ebp, dword [eax]
xor edi, edi
xor eax, eax
mov dword [esp + 0x14], ebp
xor esi, esi
mov dword [esp + 0x1c], eax
test ebx, ebx
jne 0x4b53f3
push 0x100
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004751e0
push eax
push ebx
push str.schannel:_invalid_path_name_for_CA_file__s:__s
push ebp
call fcn.00487700
add esp, 0x1c
lea ebp, [ebx + 0x4d]
jmp 0x4b56ca
push 0
push 0x80
push 3
push 0
push 1
push closesocket
push ebx
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov dword [esp + 0x24], eax
cmp eax, 0xffffffff
jne 0x4b5445
push 0x100
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004751e0
push eax
push ebx
push str.schannel:_failed_to_open_CA_file__s:__s
push ebp
call fcn.00487700
add esp, 0x1c
mov ebp, 0x4d
jmp 0x4b56ca
lea ecx, [esp + 0x2c]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x4b5485
push 0x100
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004751e0
push eax
push ebx
push str.schannel:_failed_to_determine_size_of_CA_file__s:__s
push ebp
call fcn.00487700
add esp, 0x1c
mov ebp, 0x4d
jmp 0x4b56c0
mov edi, dword [esp + 0x2c]
cmp dword [esp + 0x30], esi
jl 0x4b54b8
jg 0x4b5499
cmp edi, 0x100000
jbe 0x4b54b8
push 0x100000
push str.schannel:_CA_file_exceeds_max_size_of__u_bytes
push ebp
call fcn.00487700
add esp, 0xc
mov ebp, 0x4d
xor edi, edi
jmp 0x4b56c0
lea eax, [edi + 1]
push eax
call dword [0x4f60dc]
mov ecx, eax
add esp, 4
mov dword [esp + 0x10], ecx
test ecx, ecx
jne 0x4b54d9
lea ebp, [eax + 0x1b]
mov edi, eax
jmp 0x4b56c0
xor ebp, ebp
test edi, edi
je 0x4b551c
nop
push 0
lea eax, [esp + 0x1c]
mov dword [esp + 0x1c], ebp
push eax
mov eax, edi
sub eax, esi
push eax
lea eax, [esi + ecx]
push eax
push dword [esp + 0x34]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x4b55ed
mov eax, dword [esp + 0x18]
mov ecx, dword [esp + 0x10]
test eax, eax
je 0x4b55e6
add esi, eax
cmp esi, edi
jb 0x4b54e0
mov byte [edi + ecx], 0
mov edi, ecx
cmp byte [edi], 0
je 0x4b568e
push str._____BEGIN_CERTIFICATE_____
push edi
call sub.VCRUNTIME140.dll_strstr
mov esi, eax
add esp, 8
test esi, esi
je 0x4b568e
mov al, byte [esi + 0x1b]
cmp al, 0xd
je 0x4b5552
cmp al, 0xa
jne 0x4b568e
push str._n_____END_CERTIFICATE_____
push esi
call sub.VCRUNTIME140.dll_strstr
mov edi, eax
add esp, 8
test edi, edi
je 0x4b5675
lea eax, [esp + 0x18]
mov dword [esp + 0x18], ebp
push eax
push 0
push 0
push 0
lea eax, [esp + 0x30]
mov dword [esp + 0x30], ebp
push eax
push 0
push 0
push 0xe
push 2
lea eax, [esp + 0x58]
mov dword [esp + 0x5c], esi
sub edi, esi
push eax
add edi, 0x1a
push 2
mov dword [esp + 0x60], edi
call dword [sym.imp.CRYPT32.dll_CryptQueryObject]
test eax, eax
je 0x4b5656
mov eax, dword [esp + 0x20]
add edi, esi
cmp eax, 1
jne 0x4b563f
push 0
push 4
push dword [esp + 0x20]
push dword [esp + 0x34]
call dword [sym.imp.CRYPT32.dll_CertAddCertificateContextToStore]
push dword [esp + 0x18]
mov esi, eax
call dword [sym.imp.CRYPT32.dll_CertFreeCertificateContext]
test esi, esi
je 0x4b5620
inc dword [esp + 0x1c]
jmp 0x4b5522
mov edi, esi
jmp 0x4b551c
push 0x100
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004751e0
push eax
push ebx
push str.schannel:_failed_to_read_from_CA_file__s:__s
push dword [esp + 0x2c]
call fcn.00487700
add esp, 0x1c
mov ebp, 0x4d
jmp 0x4b56bc
push 0x100
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004751e0
push eax
push ebx
push str.schannel:_failed_to_add_certificate_from_CA_file__s_to_certificate_store:__s
jmp 0x4b560a
push ebx
push eax
push str.schannel:_unexpected_content_type__d_when_extracting_certificate_from_CA_file__s
push dword [esp + 0x20]
call fcn.00487700
mov ebp, 0x4d
jmp 0x4b56b9
push 0x100
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004751e0
push eax
push ebx
push str.schannel:_failed_to_extract_certificate_from_CA_file__s:__s
jmp 0x4b560a
push ebx
push str.schannel:_CA_file__s_is_not_correctly_formatted
push dword [esp + 0x1c]
call fcn.00487700
add esp, 0xc
mov ebp, 0x4d
jmp 0x4b56bc
mov eax, dword [esp + 0x1c]
push ebx
test eax, eax
jne 0x4b56aa
push str.schannel:_did_not_add_any_certificates_from_CA_file__s_n
push dword [esp + 0x1c]
call fcn.004877e0
add esp, 0xc
jmp 0x4b56bc
push eax
push str.schannel:_added__d_certificate_s__from_CA_file__s_n
push dword [esp + 0x20]
call fcn.004877e0
add esp, 0x10
mov edi, dword [esp + 0x10]
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push edi
call dword [0x4f60e0]
mov ecx, dword [esp + 0x140]
add esp, 4
mov eax, ebp
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.004bd65f
add esp, 0x130
ret