Function at 0x51bb80
Capabilities:
Check if file exists
Get common file path
Set current directory

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x628
push ebx
push esi
push edi
xor ebx, ebx
mov ecx, 0x82
xor eax, eax
lea edi, [ebp - 0x20e]
mov word [ebp - 0x210], bx
rep stosd dword es:[edi], eax
mov ecx, 0x82
lea edi, [ebp - 0x626]
mov word [ebp - 0x628], bx
push ebx
rep stosd dword es:[edi], eax
lea eax, [ebp - 0x210]
push 0x1a
push eax
push ebx
call dword [sym.imp.SHELL32.dll_SHGetSpecialFolderPathW]
test eax, eax
je 0x51bbf0
lea ecx, [ebp - 0x210]
push 0x570dc8
push ecx
call dword [sym.imp.SHLWAPI.dll_PathAppendW]
lea edx, [ebp - 0x210]
push edx
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
jne 0x51bbff
xor eax, eax
lea esp, [ebp - 0x634]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
lea eax, [ebp - 0x210]
test eax, eax
jne 0x51bc0d
xor esi, esi
jmp 0x51bc44
lea ecx, [ebp - 0x210]
push ecx
call dword [sym.imp.KERNEL32.dll_lstrlenW]
lea edi, [eax + eax + 2]
mov eax, edi
add eax, 3
and al, 0xfc
call fcn.0051e250
mov esi, esp
push ebx
push ebx
push edi
push esi
lea edx, [ebp - 0x210]
push 0xffffffffffffffff
push edx
push ebx
push ebx
mov byte [esi], 0
call dword [sym.imp.KERNEL32.dll_WideCharToMultiByte]
push 0x104
push esi
push 0x595e2c
call dword [sym.imp.MSVCRT.dll_strncpy]
lea eax, [ebp - 0x210]
push 0x104
push eax
push 0x595c20
call dword [sym.imp.MSVCRT.dll_wcsncpy]
add esp, 0x18
lea ecx, [ebp - 0x628]
push ecx
push 0x104
call dword [sym.imp.KERNEL32.dll_GetCurrentDirectoryW]
lea edx, [ebp - 0x210]
push edx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
mov esi, 0x59af18
mov ecx, esi
call fcn.0051be20
add esi, 0x470
cmp esi, 0x59fef8
jl 0x51bc93
mov esi, 0x59615a
mov edi, esi
neg edi
mov dword [ebp - 4], edi
jmp 0x51bcb9
mov edi, dword [ebp - 4]
push esi
push 0x55d6ac
call dword [sym.imp.MSVCRT.dll__wcsicmp]
add esp, 8
test eax, eax
jne 0x51bd57
mov eax, dword [0x570b4c]
mov edx, 0x104
cmp eax, 8
mov eax, esi
jne 0x51bd1c
lea edi, [edi + ebx + 0x570a68]
lea ecx, [edx + 0x7ffffefa]
test ecx, ecx
je 0x51bd0e
mov cx, word [edi + eax]
test cx, cx
je 0x51bd0e
mov word [eax], cx
add eax, 2
dec edx
jne 0x51bce8
sub eax, 2
mov word [eax], 0
jmp 0x51bd63
test edx, edx
jne 0x51bd15
sub eax, 2
mov word [eax], 0
jmp 0x51bd63
lea edi, [edi + ebx + 0x570db0]
lea ecx, [edx + 0x7ffffefa]
test ecx, ecx
je 0x51bd49
mov cx, word [edi + eax]
test cx, cx
je 0x51bd49
mov word [eax], cx
add eax, 2
dec edx
jne 0x51bd23
sub eax, 2
mov word [eax], 0
jmp 0x51bd63
test edx, edx
jne 0x51bd50
sub eax, 2
mov word [eax], 0
jmp 0x51bd63
mov edx, dword [0x570b4c]
add edx, 0x30
mov word [esi], dx
mov ecx, 0x82
xor eax, eax
lea edi, [ebp - 0x41a]
mov word [ebp - 0x41c], 0
rep stosd dword es:[edi], eax
lea eax, [ebp - 0x210]
lea ecx, [ebp - 0x41c]
push eax
push ecx
call dword [sym.imp.MSVCRT.dll_wcscpy]
add esp, 8
lea edx, [ebp - 0x41c]
push esi
push edx
call dword [sym.imp.SHLWAPI.dll_PathAppendW]
mov edi, dword [sym.imp.KERNEL32.dll_LoadLibraryW]
lea eax, [ebp - 0x41c]
push eax
call edi
test eax, eax
mov dword [esi - 0x20e], eax
je 0x51bdc2
lea ecx, [ebp - 0x41c]
push ecx
call edi
sub ebx, 0x470
add esi, 0x470
cmp ebx, 0xffffb020
jg 0x51bcb6
mov esi, 0x595f38
mov ecx, esi
call fcn.0051be20
add esi, 0x470
cmp esi, 0x59af18
jl 0x51bddf
lea edx, [ebp - 0x628]
push edx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
lea esp, [ebp - 0x634]
mov eax, 1
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret