Function at 0x18003f740
Capabilities:
Create new key via cryptacquirecontext
Encode data using xor
Get file size
Hash data using sha1
Hash data using sha1 via wincrypt
Hash data via wincrypt
Initialize hashing via wincrypt
Read file on windows

Disassembly:
mov rax, rsp
mov qword [rax + 8], rbx
mov qword [rax + 0x10], rsi
mov qword [rax + 0x18], rdi
mov qword [rax + 0x20], r14
push rbp
lea rbp, [rax - 0xa8]
sub rsp, 0x1a0
movaps xmmword [rax - 0x18], xmm6
mov rax, qword [0x180119040]
xor rax, rsp
mov qword [rbp + 0x88], rax
xor ebx, ebx
lea rcx, [rbp + 0x20]
call fcn.18003f390
nop
lea rcx, [rbp]
call fcn.18003f390
mov rdi, rax
lea rcx, [rbp - 0x20]
call fcn.18003f140
nop
lea r8d, [rbx + 1]
lea rdx, [0x1800f7f58]
mov rcx, rax
call fcn.18002d0b0
movups xmm0, xmmword [rax]
movups xmmword [rsp + 0x70], xmm0
movups xmm1, xmmword [rax + 0x10]
movups xmmword [rbp - 0x80], xmm1
mov qword [rax + 0x10], rbx
mov qword [rax + 0x18], 7
mov word [rax], bx
mov r9, rdi
lea r8, [rsp + 0x70]
lea rcx, [rbp - 0x40]
call fcn.180035a00
nop
mov rdx, qword [rbp - 0x78]
cmp rdx, 7
jbe 0x18003f822
lea rdx, [rdx*2 + 2]
mov rcx, qword [rsp + 0x70]
mov rax, rcx
cmp rdx, 0x1000
jb 0x18003f81c
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x18003f81c
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
call fcn.1800c8790
nop
lea rcx, [rbp - 0x20]
call fcn.180011590
nop
lea rcx, [rbp]
call fcn.180011590
movups xmm0, xmmword [0x1800fa6e0]
movups xmmword [rbp - 0x70], xmm0
movups xmm1, xmmword [0x1800fa6f0]
movups xmmword [rbp - 0x60], xmm1
movsd xmm0, qword [0x1800fa700]
movsd qword [rbp - 0x50], xmm0
movzx eax, byte [0x1800fa708]
mov byte [rbp - 0x48], al
mov r8d, ebx
cmp dword [0x180119010], 2
jl 0x18003f9ad
movdqa xmm5, xmmword [0x1801044a0]
movdqa xmm4, xmmword [0x1801046c0]
movdqa xmm6, xmmword [0x1801044f0]
movdqa xmm0, xmmword [str.2222222222222222]
movdqa xmmword [rsp + 0x60], xmm0
lea rcx, [rbp - 0x70]
mov edx, dword [rsp + 0x60]
movd xmm2, r8d
pshufd xmm2, xmm2, 0
paddd xmm2, xmm5
movdqa xmm1, xmm2
punpckldq xmm1, xmm2
pmuldq xmm1, xmm4
movdqa xmm0, xmm2
punpckhdq xmm0, xmm2
pmuldq xmm0, xmm4
shufps xmm1, xmm0, 0xdd
paddd xmm1, xmm2
psrad xmm1, 5
movdqa xmm0, xmm1
psrld xmm0, 0x1f
paddd xmm0, xmm1
pmulld xmm0, xmm6
psubd xmm2, xmm0
pshuflw xmm0, xmm2, 0xd8
pshufhw xmm1, xmm0, 0xd8
pshufd xmm2, xmm1, 0xd8
andps xmm2, xmmword [0x1801045a0]
packuswb xmm2, xmm2
movd xmm0, edx
paddb xmm2, xmm0
movd xmm0, dword [rcx]
xorps xmm2, xmm0
movd dword [rcx], xmm2
lea eax, [r8 + 4]
movd xmm3, eax
pshufd xmm3, xmm3, 0
paddd xmm3, xmm5
movdqa xmm1, xmm3
punpckldq xmm1, xmm3
pmuldq xmm1, xmm4
movdqa xmm0, xmm3
punpckhdq xmm0, xmm3
pmuldq xmm0, xmm4
shufps xmm1, xmm0, 0xdd
paddd xmm1, xmm3
psrad xmm1, 5
movdqa xmm0, xmm1
psrld xmm0, 0x1f
paddd xmm0, xmm1
pmulld xmm0, xmm6
psubd xmm3, xmm0
pshuflw xmm0, xmm3, 0xd8
pshufhw xmm1, xmm0, 0xd8
pshufd xmm2, xmm1, 0xd8
andps xmm2, xmmword [0x1801045a0]
packuswb xmm2, xmm2
movd xmm0, edx
paddb xmm2, xmm0
movd xmm0, dword [rcx + 4]
xorps xmm2, xmm0
movd dword [rcx + 4], xmm2
add r8d, 8
lea rcx, [rcx + 8]
cmp r8d, 0x28
jl 0x18003f8a0
cmp r8d, 0x29
jge 0x18003f9f3
movsxd rax, r8d
lea r9, [rbp - 0x70]
add r9, rax
nop word [rax + rax]
mov eax, 0x92492493
imul r8d
add edx, r8d
sar edx, 5
mov eax, edx
shr eax, 0x1f
add edx, eax
movsx eax, dl
imul ecx, eax, 0x38
movzx eax, r8b
sub al, cl
add al, 0x32
xor byte [r9], al
inc r8d
lea r9, [r9 + 1]
cmp r8d, 0x29
jl 0x18003f9c0
lea rcx, [rbp - 0x40]
cmp qword [rbp - 0x28], 7
cmova rcx, qword [rbp - 0x40]
mov qword [rsp + 0x30], rbx
mov dword [rsp + 0x28], 0x80
mov dword [rsp + 0x20], 3
xor r9d, r9d
mov edx, 0x80000000
lea r8d, [r9 + 1]
call qword [sym.imp.KERNEL32.dll_CreateFileW]
mov rdi, rax
cmp rax, 0xffffffffffffffff
jne 0x18003fa88
xorps xmm0, xmm0
movups xmmword [rsp + 0x70], xmm0
mov qword [rbp - 0x80], rbx
mov qword [rbp - 0x78], 0xf
lea ecx, [rax + 0x21]
call fcn.1800c8160
mov qword [rsp + 0x70], rax
mov qword [rbp - 0x80], socket
mov qword [rbp - 0x78], 0x1f
movups xmm0, xmmword [str.Invalid_Handle_Value]
movups xmmword [rax], xmm0
mov ecx, dword [0x1800fa9a8]
mov dword [rax + 0x10], ecx
mov byte [rax + 0x14], 0
lea rcx, [rsp + 0x70]
call fcn.180097780
jmp 0x18003fc6b
xor edx, edx
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_GetFileSize]
mov r14d, eax
cmp eax, 0xffffffff
je 0x18003fc62
mov ecx, r14d
call fcn.1800c88e4
mov rsi, rax
mov dword [rsp + 0x44], ebx
mov qword [rsp + 0x20], rbx
lea r9, [rsp + 0x44]
mov r8d, r14d
mov rdx, rax
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x18003fc5a
cmp dword [rsp + 0x44], r14d
jne 0x18003fc5a
mov dword [rsp + 0x20], 0xf0000000
mov r9d, 0x18
lea r8, str.Microsoft_Enhanced_RSA_and_AES_Cryptographic_Provider
xor edx, edx
lea rcx, [rsp + 0x50]
call qword [sym.imp.ADVAPI32.dll_CryptAcquireContextW]
test eax, eax
je 0x18003fc5a
lea rax, [rsp + 0x48]
mov qword [rsp + 0x20], rax
xor r9d, r9d
xor r8d, r8d
mov edx, 0x8004
mov rcx, qword [rsp + 0x50]
call qword [sym.imp.ADVAPI32.dll_CryptCreateHash]
test eax, eax
jne 0x18003fb4b
mov rcx, rsi
call fcn.1800c8790
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_CloseHandle]
xor edx, edx
mov rcx, qword [rsp + 0x50]
call qword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
jmp 0x18003fc6b
xor r9d, r9d
mov r8d, r14d
mov rdx, rsi
mov rcx, qword [rsp + 0x48]
call qword [sym.imp.ADVAPI32.dll_CryptHashData]
mov rcx, rsi
test eax, eax
jne 0x18003fb91
call fcn.1800c8790
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_CloseHandle]
mov rcx, qword [rsp + 0x48]
call qword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
xor edx, edx
mov rcx, qword [rsp + 0x50]
call qword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
jmp 0x18003fc6b
call fcn.1800c8790
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [rsp + 0x40], socket
mov dword [rsp + 0x20], ebx
lea r9, [rsp + 0x40]
lea r8, [rbp + 0x70]
mov edx, 2
mov rcx, qword [rsp + 0x48]
call qword [sym.imp.ADVAPI32.dll_CryptGetHashParam]
mov rcx, qword [rsp + 0x48]
test eax, eax
je 0x18003fb79
call qword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
xor edx, edx
mov rcx, qword [rsp + 0x50]
call qword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
xorps xmm0, xmm0
xor eax, eax
movups xmmword [rbp + 0x40], xmm0
movups xmmword [rbp + 0x50], xmm0
mov qword [rbp + 0x60], rax
mov byte [rbp + 0x68], al
cmp dword [rsp + 0x40], eax
jbe 0x18003fc2b
nop word [rax + rax]
mov eax, ebx
movzx r9d, byte [rbp + rax + 0x70]
lea ecx, [rbx + rbx]
lea rax, [rbp + 0x40]
add rcx, rax
lea r8, str._02x
mov edx, 3
call fcn.18003e6a0
inc ebx
cmp ebx, dword [rsp + 0x40]
jb 0x18003fc00
lea rax, [rbp + 0x40]
lea r8, [rbp - 0x70]
sub r8, rax
nop word [rax + rax]
movzx edx, byte [rax]
movzx ecx, byte [rax + r8]
sub edx, ecx
jne 0x18003fc53
inc rax
test ecx, ecx
jne 0x18003fc40
test edx, edx
sete bl
jmp 0x18003fc6d
mov rcx, rsi
call fcn.1800c8790
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_CloseHandle]
xor bl, bl
lea rcx, [rbp - 0x40]
call fcn.180011590
nop
lea rcx, [rbp + 0x20]
call fcn.180011590
movzx eax, bl
mov rcx, qword [rbp + 0x88]
xor rcx, rsp
call fcn.1800c8140
lea r11, [rsp + 0x1a0]
mov rbx, qword [r11 + 0x10]
mov rsi, qword [r11 + 0x18]
mov rdi, qword [r11 + 0x20]
mov r14, qword [r11 + 0x28]
movaps xmm6, xmmword [r11 - 0x10]
mov rsp, r11
pop rbp
ret