Function at 0x140020260
Capabilities:
Check if file exists
Set environment variable

Disassembly:
mov qword [rsp + 8], rbx
push rbp
push rsi
push rdi
push r12
push r13
push r14
push r15
mov rbp, rsp
sub rsp, 0x30
lea r8, [0x140281a50]
lea rdx, str.Updater:
lea rcx, str.RunUsingApp_Start...
call fcn.140036e10
lea rdx, str.true
lea rcx, str.startfromupdater
call qword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
lea rcx, [rbp + 0x50]
call fcn.140031ad0
mov rdx, qword [rax]
lea rcx, [0x1402824c8]
call qword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
mov rdx, qword [rbp + 0x50]
add rdx, 0xffffffffffffffe8
mov rbx, 0xffffffffffffffff
mov eax, ebx
lock xadd dword [rdx + 0x10], eax
sub eax, 1
jg 0x1400202e2
mov rcx, qword [rdx]
mov rax, qword [rcx]
call qword [rax + ioctlsocket]
lea rdx, [0x140287e00]
lea rcx, [0x140287e08]
call qword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
lea rcx, [rbp + 0x48]
call fcn.140031f00
nop
lea rdx, str.main_
mov rax, rbx
nop word [rax + rax]
inc rax
cmp word [rdx + rax*2], 0
jne 0x140020310
mov r8d, eax
lea rcx, [rbp + 0x48]
call fcn.14000cce0
lea rcx, [rbp + 0x58]
call fcn.1400341d0
nop
mov rsi, qword [rax]
movsxd rcx, dword [rsi - 0x10]
mov r15, rsi
mov rax, qword [rbp + 0x48]
sub r15, rax
sar r15, 1
mov r12d, dword [rax - 0x10]
test ecx, ecx
js 0x14002061c
xor edx, edx
test rsi, rsi
jne 0x14002035c
mov r14d, edx
jmp 0x14002036e
mov rdx, rcx
mov rcx, rsi
call fcn.140253bac
mov r14, rax
mov rax, qword [rbp + 0x48]
mov r13d, 0x7fffffff
mov ecx, r13d
sub ecx, r14d
cmp ecx, r12d
jl 0x14002061c
lea edi, [r12 + r14]
test edi, edi
js 0x14002061c
mov edx, 1
sub edx, dword [rax - 8]
mov ecx, dword [rax - 0xc]
sub ecx, edi
or ecx, edx
jge 0x1400203af
mov edx, edi
lea rcx, [rbp + 0x48]
call fcn.140005960
mov rax, qword [rbp + 0x48]
cmp r15, r12
ja 0x1400203b8
lea rsi, [rax + r15*2]
lea rcx, [rax + r12*2]
movsxd r8, r14d
add r8, r8
je 0x1400203f3
test rcx, rcx
je 0x1400203df
test rsi, rsi
je 0x1400203d8
mov rdx, rsi
call fcn.1402430d0
jmp 0x1400203ef
xor edx, edx
call fcn.140243780
call fcn.14025224c
mov dword [rax], reloc.WS2_32.dll_shutdown
call fcn.14024809c
mov rax, qword [rbp + 0x48]
cmp edi, dword [rax - 0xc]
jg 0x14002061c
mov dword [rax - 0x10], edi
movsxd rcx, edi
mov rax, qword [rbp + 0x48]
xor edi, edi
mov word [rax + rcx*2], di
mov rdx, qword [rbp + 0x58]
add rdx, 0xffffffffffffffe8
mov eax, ebx
lock xadd dword [rdx + 0x10], eax
sub eax, 1
jg 0x140020429
mov rcx, qword [rdx]
mov rax, qword [rcx]
call qword [rax + ioctlsocket]
lea rdx, [0x140285d80]
mov rax, rbx
inc rax
cmp word [rdx + rax*2], 0
jne 0x140020433
mov r8d, eax
lea rcx, [rbp + 0x48]
call fcn.14000cce0
lea rcx, [rbp - 0x10]
call fcn.1400318e0
nop
mov rsi, qword [rax]
movsxd rcx, dword [rsi - 0x10]
mov r12, rsi
mov rax, qword [rbp + 0x48]
sub r12, rax
sar r12, 1
mov r15d, dword [rax - 0x10]
test ecx, ecx
js 0x140020611
test rsi, rsi
jne 0x14002047d
mov r14d, edi
jmp 0x14002048f
mov rdx, rcx
mov rcx, rsi
call fcn.140253bac
mov r14, rax
mov rax, qword [rbp + 0x48]
sub r13d, r14d
cmp r13d, r15d
jl 0x140020611
lea edi, [r15 + r14]
test edi, edi
js 0x140020611
mov edx, 1
sub edx, dword [rax - 8]
mov ecx, dword [rax - 0xc]
sub ecx, edi
or ecx, edx
jge 0x1400204c7
mov edx, edi
lea rcx, [rbp + 0x48]
call fcn.140005960
mov rax, qword [rbp + 0x48]
cmp r12, r15
ja 0x1400204d0
lea rsi, [rax + r12*2]
lea rcx, [rax + r15*2]
movsxd r8, r14d
add r8, r8
je 0x14002050b
test rcx, rcx
je 0x1400204f7
test rsi, rsi
je 0x1400204f0
mov rdx, rsi
call fcn.1402430d0
jmp 0x140020507
xor edx, edx
call fcn.140243780
call fcn.14025224c
mov dword [rax], reloc.WS2_32.dll_shutdown
call fcn.14024809c
mov rax, qword [rbp + 0x48]
cmp edi, dword [rax - 0xc]
jg 0x140020611
mov dword [rax - 0x10], edi
movsxd rcx, edi
mov rax, qword [rbp + 0x48]
xor edx, edx
mov word [rax + rcx*2], dx
mov rdx, qword [rbp - 0x10]
add rdx, 0xffffffffffffffe8
mov eax, ebx
lock xadd dword [rdx + 0x10], eax
sub eax, 1
jg 0x140020541
mov rcx, qword [rdx]
mov rax, qword [rcx]
call qword [rax + ioctlsocket]
mov rcx, qword [rbp + 0x48]
call qword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
je 0x14002055c
xor edx, edx
mov rcx, qword [rbp + 0x48]
call fcn.140025d00
jmp 0x1400205c6
lea r8, [0x140281a50]
mov rdx, qword [rbp + 0x48]
lea rcx, str.RunUsingApp_Path_File_Not_Exists:
call fcn.140036e10
lea r8, [0x140281a50]
lea rdx, str.Updater:
lea rcx, str.RunUsingApp_ERR_MSG_FAIL_RUN_REINSTALL...
call fcn.140036e10
lea r8, [0x140364588]
cmp qword [reloc.WS2_32.dll_getsockopt], 8
cmovae r8, qword [0x140364588]
lea rdx, [0x140364628]
cmp qword [reloc.WS2_32.dll_getsockopt], 8
cmovae rdx, qword [0x140364628]
xor r9d, r9d
xor ecx, ecx
call qword [sym.imp.USER32.dll_MessageBoxW]
lea r8, [0x140281a50]
lea rdx, str.Updater:
lea rcx, str.RunUsingApp_End...
call fcn.140036e10
nop
mov rdx, qword [rbp + 0x48]
add rdx, 0xffffffffffffffe8
lock xadd dword [rdx + 0x10], ebx
sub ebx, 1
jg 0x1400205fc
mov rcx, qword [rdx]
mov rax, qword [rcx]
call qword [rax + ioctlsocket]
mov rbx, qword [rsp + 0x70]
add rsp, 0x30
pop r15
pop r14
pop r13
pop r12
pop rdi
pop rsi
pop rbp
ret
mov ecx, 0x80070057
call fcn.140004b00
nop
mov ecx, 0x80070057
call fcn.140004b00
int3