Function at 0x140021050
Capabilities:
Check if file exists
Enumerate files on windows
Get file attributes

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rbp
mov qword [rsp + 0x18], rsi
mov qword [rsp + 0x20], rdi
push r12
push r14
push r15
sub rsp, 0x360
xor r14d, r14d
or rsi, 0xffffffffffffffff
mov r12, rdx
cmp dword [0x1400b5070], r14d
mov r15, rcx
lea rbx, [0x1400b5074]
mov ebp, r14d
jle 0x140021193
nop word [rax + rax]
movzx edi, byte [rbx]
inc rbx
mov rax, rsi
nop dword [rax]
inc rax
cmp byte [rbx + rax], r14b
jne 0x1400210b0
mov r8, qword [0x1408a2b50]
cmp rax, r8
jne 0x140021131
mov rdx, qword [0x1408a2b48]
mov rcx, rbx
call sub.msvcrt.dll__strnicmp
test eax, eax
jne 0x140021131
mov rax, rsi
nop dword [rax + rax]
inc rax
cmp byte [rbx + rax], r14b
jne 0x1400210e0
inc rbx
add rbx, rax
cmp dil, 2
je 0x1400212b2
mov rcx, qword [0x1408a2b78]
mov r9, rbx
movzx r8d, dil
mov rdx, r12
call fcn.140037880
test eax, eax
jne 0x1400212b2
mov rax, rsi
nop word [rax + rax]
inc rax
cmp byte [rbx + rax], r14b
jne 0x140021120
inc rbx
add rbx, rax
jmp 0x140021162
mov rax, rsi
cmp byte [rbx + rax + 1], r14b
lea rax, [rax + 1]
jne 0x140021134
lea rcx, [rax + 1]
mov rax, rsi
add rcx, rbx
nop dword [rax]
cmp byte [rcx + rax + 1], r14b
lea rax, [rax + 1]
jne 0x140021150
lea rbx, [rax + 1]
add rbx, rcx
movzx eax, byte [rbx]
inc rbx
cmp al, 6
jne 0x140021181
mov rcx, rbx
call fcn.140034620
add eax, dword [0x1408b7420]
cdqe
add rbx, rax
jmp 0x140021185
add rbx, 8
inc ebp
cmp ebp, dword [0x1400b5070]
jl 0x1400210a0
cmp byte [r12], r14b
jne 0x140021460
mov rdi, qword [0x1408a2980]
test rdi, rdi
jne 0x1400213f0
lea rcx, [0x1400b4038]
movzx eax, byte [r14 + rcx]
lea r14, [r14 + 1]
mov byte [rsp + r14 + 0x15f], al
test al, al
jne 0x1400211b4
lea rax, [rsp + 0x160]
dec rax
cmp byte [rax + 1], 0
lea rax, [rax + 1]
jne 0x1400211d4
movups xmm0, xmmword [str.Residents.res]
mov rbx, rsi
movups xmmword [rax], xmm0
lea rax, [rsp + 0x160]
inc rbx
cmp byte [rax + rbx], 0
jne 0x1400211f3
lea rax, [rsp + 0x160]
lea rdx, [rsp + 0x20]
lea rcx, [rsp + 0x160]
sub rax, 5
add rbx, rax
call qword [sym.imp.KERNEL32.dll_FindFirstFileA]
mov rdi, rax
cmp rax, 0xffffffffffffffff
je 0x1400213de
nop dword [rax + rax]
test byte [rsp + 0x20], 0x10
jne 0x1400213bf
cmp dword [reloc.WS2_32.dll_accept], 0
je 0x140021391
movsd xmm0, qword [str.Unicode_]
lea rcx, [rbx - 1]
movsd qword [rbx], xmm0
movzx eax, byte [0x140095530]
mov byte [rbx + 8], al
cmp byte [rcx + 1], 0
lea rcx, [rcx + 1]
jne 0x140021262
lea r8, [rsp + 0x4c]
xor edx, edx
nop dword [rax]
nop word [rax + rax]
movzx eax, byte [r8 + rdx]
lea rdx, [rdx + 1]
mov byte [rcx + rdx - 1], al
test al, al
jne 0x140021280
lea rcx, [rsp + 0x160]
call qword [sym.imp.KERNEL32.dll_GetFileAttributesA]
cmp eax, 0xffffffff
je 0x14002136d
mov edx, 1
jmp 0x1400213b2
inc rsi
cmp byte [rbx + rsi], r14b
jne 0x1400212b2
add rbx, rsi
movsx ecx, byte [rbx + 1]
sub ecx, 3
je 0x140021355
sub ecx, 2
je 0x14002133d
dec ecx
jne 0x14002157f
lea rcx, [rbx + 2]
mov dword [r15], 0x25
call fcn.140034620
mov rcx, qword [0x1408a11f8]
xor edx, edx
add eax, dword [0x1408b7420]
movsxd r8, eax
call qword [sym.imp.KERNEL32.dll_HeapAlloc]
mov qword [r15 + 8], rax
test rax, rax
je 0x14002131e
lea rdx, [rbx + 2]
mov rcx, rax
call fcn.1400345a0
mov byte [r15 + 0x1a], r14b
jmp 0x14002157f
lea rdx, str.NoMemory
lea rcx, str.Parser
call fcn.14002be20
mov qword [0x1408a2998], rax
jmp 0x140021575
mov dword [r15], 0x24
mov rax, qword [rbx + 2]
mov byte [r15 + 0x1a], r14b
mov qword [r15 + 8], rax
jmp 0x14002157f
mov dword [r15], 0x23
mov rax, qword [rbx + 2]
mov byte [r15 + 0x1a], r14b
mov qword [r15 + 8], rax
jmp 0x14002157f
lea rax, [rsp + 0x4c]
mov rdx, rbx
lea rcx, [rsp + 0x4c]
sub rdx, rax
nop dword [rax]
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx + rcx - 1], al
test al, al
jne 0x140021380
jmp 0x1400213b0
lea rax, [rsp + 0x4c]
mov rdx, rbx
lea rcx, [rsp + 0x4c]
sub rdx, rax
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx + rcx - 1], al
test al, al
jne 0x1400213a1
xor edx, edx
lea rcx, [rsp + 0x160]
call fcn.14001f990
lea rdx, [rsp + 0x20]
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_FindNextFileA]
test eax, eax
jne 0x140021230
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_FindClose]
mov rdi, qword [0x1408a2980]
test rdi, rdi
je 0x140021460
nop word [rax + rax]
mov rbx, qword [rdi + 8]
movsxd rax, dword [rdi + 0x10]
add rax, rbx
cmp rbx, rax
jae 0x140021458
mov rax, rsi
inc rax
cmp byte [rbx + rax], 0
jne 0x140021403
mov r8, qword [0x1408a2b50]
cmp rax, r8
jne 0x14002142f
mov rdx, qword [0x1408a2b48]
mov rcx, rbx
call sub.msvcrt.dll__strnicmp
test eax, eax
je 0x1400215a1
mov rax, rsi
inc rax
cmp byte [rbx + rax], 0
jne 0x140021432
mov edx, dword [rdi + 0x14]
lea rcx, [rbx + 1]
add rcx, rax
call qword [rdi + 0x20]
movsxd rcx, dword [rdi + 0x10]
add rcx, qword [rdi + 8]
mov rbx, rax
cmp rax, rcx
jb 0x140021400
mov rdi, qword [rdi]
test rdi, rdi
jne 0x1400213f0
cmp dword [0x1408a2990], 0
jne 0x14002157f
lea rdx, str.ConstantNotFound
lea rcx, str.Parser
call fcn.14002be20
lea rbx, [0x1408a29a0]
mov rdx, rbx
sub rdx, rax
nop dword [rax]
movzx ecx, byte [rax]
lea rax, [rax + 1]
mov byte [rdx + rax - 1], cl
test cl, cl
jne 0x140021490
lea rcx, [rbx - 1]
cmp byte [rcx + 1], 0
lea rcx, [rcx + 1]
jne 0x1400214a3
movzx eax, word [0x140095508]
mov word [rcx], ax
movzx eax, byte [0x14009550a]
mov byte [rcx + 2], al
cmp byte [r12], 0
je 0x140021513
lea rcx, [rbx - 1]
nop dword [rax]
cmp byte [rcx + 1], 0
lea rcx, [rcx + 1]
jne 0x1400214d0
xor edx, edx
nop dword [rax]
movzx eax, byte [r12 + rdx]
lea rdx, [rdx + 1]
mov byte [rcx + rdx - 1], al
test al, al
jne 0x1400214e0
lea rcx, [rbx - 1]
cmp byte [rcx + 1], 0
lea rcx, [rcx + 1]
jne 0x1400214f5
movzx eax, word [0x14009550c]
mov word [rcx], ax
movzx eax, byte [0x14009550e]
mov byte [rcx + 2], al
lea rcx, [rbx - 1]
nop word [rax + rax]
cmp byte [rcx + 1], 0
lea rcx, [rcx + 1]
jne 0x140021520
movzx eax, word [0x14009554c]
mov r8, qword [0x1408a2b50]
mov rdx, qword [0x1408a2b48]
mov word [rcx], ax
mov rcx, rbx
call sub.msvcrt.dll_strncat
lea rcx, [rbx - 1]
nop
cmp byte [rcx + 1], 0
lea rcx, [rcx + 1]
jne 0x140021550
movzx eax, word [0x140095510]
mov qword [0x1408a2998], rbx
mov word [rcx], ax
movzx eax, byte [0x140095512]
mov byte [rcx + 2], al
mov dword [0x1408a2990], 1
lea r11, [rsp + 0x360]
mov rbx, qword [r11 + 0x20]
mov rbp, qword [r11 + 0x28]
mov rsi, qword [r11 + 0x30]
mov rdi, qword [r11 + 0x38]
mov rsp, r11
pop r15
pop r14
pop r12
ret
inc rsi
cmp byte [rbx + rsi], 0
jne 0x1400215a1
mov r8d, dword [rdi + 0x14]
lea rcx, [rbx + 1]
mov rdx, r15
add rcx, rsi
call qword [rdi + 0x18]
mov byte [r15 + 0x1a], 0
jmp 0x14002157f