Function at 0x4c8310
Capabilities:
Get file size
Read file on windows

Disassembly:
sub esp, 0xb0
mov eax, dword [0x658c00]
xor eax, esp
mov dword [esp + 0xac], eax
mov eax, dword [esp + 0xb4]
push ebx
mov ebx, dword [esp + 0xbc]
mov dword [esp + 0x1c], eax
mov eax, dword [esp + 0xc0]
push ebp
push esi
push edi
mov ebp, dword [eax]
xor edi, edi
xor eax, eax
mov dword [esp + 0x14], ebx
xor esi, esi
mov dword [esp + 0x1c], eax
test ebx, ebx
jne 0x4c8383
push 0x80
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00495310
push eax
push esi
push str.schannel:_invalid_path_name_for_CA_file__s:__s
push ebp
call fcn.004a83f0
add esp, 0x1c
lea ebx, [edi + 0x4d]
jmp 0x4c867a
push 0
push 0x80
push 3
push 0
push 1
push accept
push ebx
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov dword [esp + 0x24], eax
cmp eax, 0xffffffff
jne 0x4c83d5
push 0x80
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00495310
push eax
push ebx
push str.schannel:_failed_to_open_CA_file__s:__s
push ebp
call fcn.004a83f0
add esp, 0x1c
mov ebx, 0x4d
jmp 0x4c867a
lea ecx, [esp + 0x2c]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x4c8415
push 0x80
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00495310
push eax
push ebx
push str.schannel:_failed_to_determine_size_of_CA_file__s:__s
push ebp
call fcn.004a83f0
add esp, 0x1c
mov ebx, 0x4d
jmp 0x4c8670
mov edi, dword [esp + 0x2c]
cmp dword [esp + 0x30], esi
jl 0x4c8448
jg 0x4c8429
cmp edi, 0x100000
jbe 0x4c8448
push 0x100000
push str.schannel:_CA_file_exceeds_max_size_of__u_bytes
push ebp
call fcn.004a83f0
add esp, 0xc
mov ebx, 0x4d
xor edi, edi
jmp 0x4c8670
lea eax, [edi + 1]
push eax
call dword [0x6550f0]
mov ecx, eax
add esp, 4
mov dword [esp + 0x10], ecx
test ecx, ecx
jne 0x4c8469
lea ebx, [eax + 0x1b]
mov edi, eax
jmp 0x4c8670
xor ebx, ebx
test edi, edi
je 0x4c84ac
nop
push 0
lea eax, [esp + 0x1c]
mov dword [esp + 0x1c], ebx
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 0x4c857b
mov eax, dword [esp + 0x18]
mov ecx, dword [esp + 0x10]
test eax, eax
je 0x4c8574
add esi, eax
cmp esi, edi
jb 0x4c8470
mov byte [edi + ecx], bl
mov edi, ecx
cmp byte [edi], bl
je 0x4c8641
push str._____BEGIN_CERTIFICATE_____
push edi
call sub.VCRUNTIME140.dll_strstr
mov esi, eax
add esp, 8
test esi, esi
je 0x4c8641
mov al, byte [esi + 0x1b]
cmp al, 0xd
je 0x4c84e0
cmp al, 0xa
jne 0x4c8641
push str._n_____END_CERTIFICATE_____
push esi
call sub.VCRUNTIME140.dll_strstr
mov edi, eax
add esp, 8
test edi, edi
je 0x4c8628
lea eax, [esp + 0x18]
mov dword [esp + 0x18], ebx
push eax
push 0
push 0
push 0
lea eax, [esp + 0x30]
mov dword [esp + 0x30], ebx
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 0x4c85f8
mov eax, dword [esp + 0x20]
add edi, esi
cmp eax, 1
jne 0x4c85e1
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 0x4c85ae
inc dword [esp + 0x1c]
jmp 0x4c84b1
mov edi, esi
jmp 0x4c84ac
push 0x80
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00495310
push eax
push dword [esp + 0x24]
push str.schannel:_failed_to_read_from_CA_file__s:__s
push ebp
call fcn.004a83f0
add esp, 0x1c
mov ebx, 0x4d
jmp 0x4c866c
push 0x80
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00495310
push eax
push dword [esp + 0x24]
push str.schannel:_failed_to_add_certificate_from_CA_file__s_to_certificate_store:__s
push ebp
call fcn.004a83f0
add esp, 0x1c
mov ebx, 0x4d
jmp 0x4c866c
push dword [esp + 0x14]
push eax
push str.schannel:_unexpected_content_type__d_when_extracting_certificate_from_CA_file__s
push ebp
call fcn.004a83f0
mov ebx, 0x4d
jmp 0x4c8669
push 0x80
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00495310
push eax
push dword [esp + 0x24]
push str.schannel:_failed_to_extract_certificate_from_CA_file__s:__s
push ebp
call fcn.004a83f0
add esp, 0x1c
mov ebx, 0x4d
jmp 0x4c866c
push dword [esp + 0x14]
push str.schannel:_CA_file__s_is_not_correctly_formatted
push ebp
call fcn.004a83f0
add esp, 0xc
mov ebx, 0x4d
jmp 0x4c866c
mov eax, dword [esp + 0x1c]
push dword [esp + 0x14]
test eax, eax
jne 0x4c865d
push str.schannel:_did_not_add_any_certificates_from_CA_file__s_n
push ebp
call fcn.004a84d0
add esp, 0xc
jmp 0x4c866c
push eax
push str.schannel:_added__d_certificate_s__from_CA_file__s_n
push ebp
call fcn.004a84d0
add esp, 0x10
mov edi, dword [esp + 0x10]
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push edi
call dword [0x6550f4]
mov ecx, dword [esp + 0xc0]
add esp, 4
mov eax, ebx
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.005c9818
add esp, 0xb0
ret