Function at 0x1400ff000
Capabilities:
Check if file exists
Generate random numbers via winapi
Get common file path

Disassembly:
xor edx, edx
jmp 0x1400ff010
mov rax, rsp
push rbx
push rbp
push rsi
push rdi
push r13
push r14
sub rsp, 0x68
xor ebp, ebp
or r13, 0xffffffffffffffff
mov r14, rdx
mov qword [rax + 0x10], rbp
mov esi, ebp
test rdx, rdx
jne 0x1400ff1f4
mov qword [rax - 0x58], rbp
mov qword [rax - 0x50], rbp
mov qword [rax - 0x48], rbp
test rcx, rcx
jne 0x1400ff0c2
call qword [sym.imp.KERNEL32.DLL_GetTempPathW]
mov edi, eax
test eax, eax
jne 0x1400ff066
call qword [sym.imp.KERNEL32.DLL_GetLastError]
mov ecx, eax
call fcn.140105940
jmp 0x1400ff37a
lea rcx, [rdi + rdi]
call qword [sym.imp.msvcrt.dll_malloc]
mov rbx, rax
test rax, rax
jne 0x1400ff089
call qword [sym.imp.msvcrt.dll__errno]
mov dword [rax], 0xc
jmp 0x1400ff37a
mov rdx, rax
mov ecx, edi
call qword [sym.imp.KERNEL32.DLL_GetTempPathW]
mov qword [rsp + 0x48], rbp
mov r8, r13
nop dword [rax]
inc r8
cmp word [rbx + r8*2], si
jne 0x1400ff0a0
lea rcx, [rsp + 0x40]
mov rdx, rbx
call fcn.140102f10
mov rcx, rbx
call qword [sym.imp.msvcrt.dll_free]
jmp 0x1400ff104
mov r8, r13
inc r8
cmp byte [rcx + r8], sil
jne 0x1400ff0c5
mov rdx, rcx
lea rcx, [rsp + 0x40]
call fcn.140102b40
test eax, eax
js 0x1400ff37a
mov rcx, qword [rsp + 0x40]
mov rax, qword [rsp + 0x48]
cmp word [rcx + rax*2 - 2], 0x2f
je 0x1400ff104
lea rcx, [rsp + 0x40]
mov edx, 0x2f
call fcn.1401029c0
mov rcx, qword [rsp + 0x40]
call qword [sym.imp.KERNEL32.DLL_GetFileAttributesW]
cmp eax, 0xffffffff
jne 0x1400ff174
call qword [sym.imp.KERNEL32.DLL_GetLastError]
cmp eax, 2
je 0x1400ff131
call qword [sym.imp.KERNEL32.DLL_GetLastError]
mov ecx, eax
call fcn.140105940
jmp 0x1400ff37a
mov rcx, qword [rsp + 0x40]
call fcn.1401061e0
mov rsi, rax
test rax, rax
jne 0x1400ff154
call qword [sym.imp.msvcrt.dll__errno]
mov dword [rax], 0x16
jmp 0x1400ff37a
mov rcx, rax
call qword [sym.imp.KERNEL32.DLL_GetFileAttributesW]
cmp eax, 0xffffffff
jne 0x1400ff174
call qword [sym.imp.KERNEL32.DLL_GetLastError]
mov ecx, eax
call fcn.140105940
jmp 0x1400ff37a
test al, 0x10
jne 0x1400ff189
call qword [sym.imp.msvcrt.dll__errno]
mov dword [rax], 0x14
jmp 0x1400ff37a
lea rdx, str.libarchive_
lea rcx, [rsp + 0x40]
call fcn.140102a40
lea rdx, str.XXXXXXXXXX
lea rcx, [rsp + 0x40]
call fcn.140102a40
mov r14, qword [rsp + 0x40]
mov rax, qword [rsp + 0x48]
lea rbx, [r14 + rax*2]
lea rbp, [rbx - 0x14]
lea rcx, [rsp + 0xa8]
mov r9d, 1
xor r8d, r8d
xor edx, edx
mov dword [rsp + 0x20], 0xf0000000
call qword [sym.imp.ADVAPI32.dll_CryptAcquireContextW]
test eax, eax
jne 0x1400ff236
call qword [sym.imp.KERNEL32.DLL_GetLastError]
mov ecx, eax
call fcn.140105940
jmp 0x1400ff37a
mov edx, 0x58
mov rcx, r14
call qword [sym.imp.msvcrt.dll_wcschr]
mov rbp, rax
test rax, rax
jne 0x1400ff211
call qword [sym.imp.msvcrt.dll_abort]
int3
cmp word [rax], 0x58
mov rbx, rax
jne 0x1400ff22a
nop word [rax + rax]
add rbx, 2
cmp word [rbx], 0x58
je 0x1400ff220
cmp word [rbx], si
je 0x1400ff1bd
call qword [sym.imp.msvcrt.dll_abort]
int3
mov qword [rsp + 0xa0], r12
mov qword [rsp + 0x60], r15
mov r15, rbx
sub r15, rbp
mov r12, r15
sar r12, 1
mov qword [rsp + 0xb0], r12
nop word [rax + rax]
mov rcx, qword [rsp + 0xa8]
lea edx, [r12 + r12]
mov r8, rbp
mov rdi, rbp
call qword [sym.imp.ADVAPI32.dll_CryptGenRandom]
test eax, eax
je 0x1400ff360
xor eax, eax
lea r8, [r15 + 1]
shr r8, 1
cmp rbp, rbx
mov r9d, eax
cmova r8, rax
test r8, r8
je 0x1400ff2f0
movabs r13, 0x842108421084211
lea r12, str.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
nop dword [rax]
movzx ecx, word [rdi]
mov rax, r13
inc r9
lea rdi, [rdi + 2]
mul rcx
mov eax, ecx
sub rax, rdx
shr rax, 1
add rax, rdx
shr rax, 5
imul rax, rax, 0x3e
sub rcx, rax
movzx eax, word [r12 + rcx*2]
mov word [rdi - 2], ax
cmp r9, r8
jb 0x1400ff2b0
mov r12, qword [rsp + 0xb0]
or r13, 0xffffffffffffffff
mov rcx, rsi
call qword [sym.imp.msvcrt.dll_free]
mov rcx, r14
call fcn.1401061e0
mov rsi, rax
test rax, rax
je 0x1400ff3e7
cmp r14, qword [rsp + 0x40]
mov eax, pe_nt_image_headers64
mov ecx, 0x4000100
cmove eax, ecx
mov qword [rsp + 0x30], 0
mov edx, 0xc0010000
mov dword [rsp + 0x28], eax
xor r9d, r9d
xor r8d, r8d
mov rcx, rsi
mov dword [rsp + 0x20], 1
call qword [sym.imp.KERNEL32.DLL_CreateFileW]
mov rdi, rax
cmp rax, 0xffffffffffffffff
jne 0x1400ff3b9
call qword [sym.imp.KERNEL32.DLL_GetLastError]
cmp eax, 0x50
je 0x1400ff260
call qword [sym.imp.KERNEL32.DLL_GetLastError]
mov ecx, eax
call fcn.140105940
mov r12, qword [rsp + 0xa0]
mov r15, qword [rsp + 0x60]
mov rcx, qword [rsp + 0xa8]
test rcx, rcx
je 0x1400ff38f
xor edx, edx
call qword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
mov rcx, rsi
call qword [sym.imp.msvcrt.dll_free]
cmp r14, qword [rsp + 0x40]
jne 0x1400ff3a9
lea rcx, [rsp + 0x40]
call fcn.140102ee0
mov eax, r13d
add rsp, 0x68
pop r14
pop r13
pop rdi
pop rsi
pop rbp
pop rbx
ret
mov edx, 0x8002
mov rcx, rax
call qword [sym.imp.msvcrt.dll__open_osfhandle]
mov r13d, eax
cmp eax, 0xffffffff
jne 0x1400ff36d
call qword [sym.imp.KERNEL32.DLL_GetLastError]
mov ecx, eax
call fcn.140105940
mov rcx, rdi
call qword [sym.imp.KERNEL32.DLL_CloseHandle]
jmp 0x1400ff36d
call qword [sym.imp.msvcrt.dll__errno]
mov dword [rax], 0x16
jmp 0x1400ff36d