Function at 0x1400285a0
Capabilities:
Get file size
Write file on windows

Disassembly:
mov rax, rsp
push rbp
push rdi
push r14
lea rbp, [rax - 0x5f]
sub rsp, 0xe0
mov qword [rbp - 0x59], 0xfffffffffffffffe
mov qword [rax + 0x18], rbx
mov qword [rax + 0x20], rsi
mov rax, qword [0x14009a750]
xor rax, rsp
mov qword [rbp + 0x37], rax
mov rbx, rdx
mov rsi, rcx
xor r14d, r14d
mov qword [rbp - 0x31], r14
lea ecx, [r14 + 8]
call fcn.140048fe4
mov qword [rbp - 0x29], rax
mov qword [rax], 0xffffffffffffffff
mov qword [rbp - 0x31], rax
mov dword [rsp + 0x28], 2
mov dword [rsp + 0x20], r14d
mov r9d, 0x40000000
mov r8, rbx
lea rdx, [rbp - 0x31]
call fcn.14002a9c0
mov rbx, qword [rbp - 0x31]
test al, al
je 0x1400287c2
test rbx, rbx
je 0x14002865d
mov rcx, qword [rbx]
cmp rcx, 0xffffffffffffffff
je 0x14002865d
lea rdx, [rbp - 0x29]
call qword [sym.imp.KERNEL32.dll_GetFileSize]
mov edi, eax
cmp eax, 0xffffffff
jne 0x140028649
call qword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x14002865d
mov ecx, dword [rbp - 0x29]
shl rcx, 0x20
add rcx, rdi
je 0x14002865d
mov dil, 1
jmp 0x1400287c5
xor eax, eax
mov qword [rbp - 0x49], rax
mov qword [rbp - 0x41], rax
mov qword [rbp - 0x39], rax
xorps xmm0, xmm0
movdqu xmmword [rbp - 0x49], xmm0
mov qword [rbp - 0x39], r14
movdqa xmmword [rbp - 0x19], xmm0
mov qword [rbp - 9], r14
mov qword [rbp - 1], r14
movdqa xmmword [rbp + 7], xmm0
movdqa xmmword [rbp + 0x17], xmm0
mov qword [rbp + 0x27], r14
mov dword [rbp + 0x2f], 0xffffffff
mov rax, qword [rsi + 0x40]
lea rcx, [rbp - 0x19]
cmp qword [rsi + 0x38], rax
jne 0x1400286ae
call fcn.1400276b0
jmp 0x1400286da
lea rdx, [rsi + 0x38]
call fcn.14002c3f0
lea rdx, [rsi + 0x50]
lea rcx, [rbp - 1]
call fcn.14002c3f0
lea rdx, [rsi + 0x68]
lea rcx, [rbp + 0x17]
call fcn.14002c3f0
mov eax, dword [rsi + 0x80]
mov dword [rbp + 0x2f], eax
lea rdx, [rbp - 0x49]
lea rcx, [rbp - 0x19]
call fcn.140028250
mov dword [rbp - 0x51], r14d
mov rdi, qword [rbp - 0x41]
sub rdi, qword [rbp - 0x49]
test rbx, rbx
jne 0x1400286fd
xor dil, dil
jmp 0x140028757
cmp qword [rbp - 0x49], 0
jne 0x140028709
xor dil, dil
jmp 0x14002873d
mov rcx, qword [rbx]
cmp rcx, 0xffffffffffffffff
jne 0x140028717
xor dil, dil
jmp 0x14002873d
mov qword [rsp + 0x20], r14
lea r9, [rbp - 0x51]
mov r8d, edi
mov rdx, qword [rbp - 0x49]
call qword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
jne 0x140028736
xor dil, dil
jmp 0x14002873d
cmp edi, dword [rbp - 0x51]
sete dil
mov rcx, qword [rbx]
cmp rcx, 0xffffffffffffffff
je 0x140028757
call qword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
je 0x140028757
mov qword [rbx], 0xffffffffffffffff
mov rcx, qword [rbp - 0x41]
sub rcx, qword [rbp - 0x49]
mov eax, dword [rbp - 0x51]
cmp rax, rcx
jne 0x140028771
test dil, dil
je 0x140028771
mov dil, 1
jmp 0x140028774
xor dil, dil
lea rcx, [rbp - 0x19]
call fcn.14002aae0
nop
mov rcx, qword [rbp - 0x49]
test rcx, rcx
je 0x1400287c5
mov rdx, qword [rbp - 0x39]
sub rdx, rcx
mov rax, rcx
cmp rdx, 0x1000
jb 0x1400287af
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
ja 0x140028819
call fcn.140049020
xorps xmm0, xmm0
movdqu xmmword [rbp - 0x49], xmm0
mov qword [rbp - 0x39], r14
jmp 0x1400287c5
xor dil, dil
test rbx, rbx
je 0x1400287f1
mov rcx, qword [rbx]
lea r8, [rcx - 1]
cmp r8, 0xfffffffffffffffd
ja 0x1400287e0
call qword [sym.imp.KERNEL32.dll_CloseHandle]
mov qword [rbx], r14
mov edx, 8
mov rcx, rbx
call fcn.140049020
mov qword [rbp - 0x31], r14
movzx eax, dil
mov rcx, qword [rbp + 0x37]
xor rcx, rsp
call fcn.140048fc0
lea r11, [rsp + 0xe0]
mov rbx, qword [r11 + 0x30]
mov rsi, qword [r11 + 0x38]
mov rsp, r11
pop r14
pop rdi
pop rbp
ret
call fcn.14004d324
nop
int3