Function at 0x140027810
Capabilities:
Encode data using xor
Generate random numbers using the delphi lcg
Hash data with crc32

Disassembly:
push r12
push r14
push r15
sub rsp, 0x30
xor r12d, r12d
xor r15d, r15d
mov r14, r9
test r9, r9
je 0x14002782b
mov byte [r9], r12b
mov qword [rsp + 0x50], rbx
test rcx, rcx
je 0x140027b5d
mov rbx, qword [rcx + 0x80]
test rbx, rbx
je 0x140027b5d
cmp qword [rbx], r12
jne 0x140027863
mov eax, 0xffffff9c
mov rbx, qword [rsp + 0x50]
add rsp, 0x30
pop r15
pop r14
pop r12
ret
test r8d, r8d
jne 0x14002787a
xor eax, eax
mov rbx, qword [rsp + 0x50]
add rsp, 0x30
pop r15
pop r14
pop r12
ret
mov eax, dword [rbx + 0x80]
mov qword [rbx + 0x18], rdx
mov dword [rbx + 0x20], r8d
cmp r8d, eax
jbe 0x140027893
mov dword [rbx + 0x20], eax
mov r8d, eax
mov qword [rsp + 0x58], rbp
mov qword [rsp + 0x60], rsi
mov qword [rsp + 0x28], rdi
mov qword [rsp + 0x20], r13
test r8d, r8d
je 0x140027b58
lea r13, [0x14002e270]
nop word [rax + rax]
cmp dword [rbx + 0x10], 0
jne 0x1400279e9
mov eax, dword [rbx + 0x7c]
test eax, eax
je 0x1400279e9
mov rcx, qword [rbx + 0x88]
mov edi, 0x4000
mov edx, dword [rbx + 0x94]
cmp eax, edi
cmovb edi, eax
add edx, dword [rbx + 0x60]
cmp byte [rcx], 0
je 0x140027913
cmp byte [rcx + 1], 0
je 0x140027b41
add edx, dword [rcx + 0x14]
xor r9d, r9d
mov rcx, qword [rcx + 8]
xor r8d, r8d
call qword [sym.imp.KERNEL32.dll_SetFilePointer]
jmp 0x140027916
mov dword [rcx + 0x2c], edx
mov r9, qword [rbx + 0x88]
mov r8d, 1
mov rcx, qword [rbx]
mov edx, edi
mov esi, edi
call fcn.140026750
cmp rax, 1
jne 0x140027b41
add dword [rbx + 0x60], edi
sub dword [rbx + 0x7c], edi
cmp byte [rbx + 0x98], 0
mov r10, qword [rbx]
mov qword [rbx + 8], r10
mov dword [rbx + 0x10], edi
je 0x1400279e9
test edi, edi
je 0x1400279e9
nop
mov r9d, dword [rbx + 0xa4]
lea r10, [r10 + 1]
mov edx, dword [rbx + 0x9c]
mov eax, r9d
and eax, 0xfffd
mov ecx, edx
or eax, 2
shr edx, 8
mov r8d, eax
xor r8d, 1
imul r8d, eax
shr r8d, 8
xor r8b, byte [r10 - 1]
movsx rax, r8b
xor rcx, rax
movzx eax, cl
movzx ecx, r9b
shr r9d, 8
xor edx, dword [r13 + rax*4]
movzx eax, dl
add eax, dword [rbx + 0xa0]
imul eax, eax, 0x8088405
mov dword [rbx + 0x9c], edx
inc eax
mov dword [rbx + 0xa0], eax
shr rax, 0x18
xor rcx, rax
xor r9d, dword [r13 + rcx*4]
mov dword [rbx + 0xa4], r9d
mov byte [r10 - 1], r8b
sub rsi, 1
jne 0x140027960
mov r10d, dword [rbx + 0xa8]
mov r8d, dword [rbx + 0x10]
cmp r10d, r8d
mov r9d, r8d
cmovbe r9d, r10d
test r9d, r9d
je 0x140027a41
mov rdx, qword [rbx + 8]
lea eax, [r9 - 1]
sub r8d, r9d
movzx r11d, byte [rax + rdx]
sub dword [rbx + 0x80], r9d
mov eax, r9d
add rax, rdx
mov dword [rbx + 0x10], r8d
sub r10d, r9d
mov qword [rbx + 8], rax
mov dword [rbx + 0xa8], r10d
jne 0x140027a41
cmp r11b, byte [rbx + 0xac]
jne 0x140027b48
cmp dword [rbx + 0x90], 0
jne 0x140027ac2
mov esi, dword [rbx + 0x20]
cmp esi, r8d
cmovae esi, r8d
xor r8d, r8d
test esi, esi
je 0x140027a79
nop
mov rax, qword [rbx + 8]
mov rcx, qword [rbx + 0x18]
movzx eax, byte [r8 + rax]
mov byte [r8 + rcx], al
inc r8d
cmp r8d, esi
jb 0x140027a60
mov rdi, qword [rbx + 0x18]
mov r8d, esi
mov ecx, dword [rbx + 0x74]
mov rdx, rdi
call fcn.140025cf0
sub dword [rbx + 0x80], esi
add r15d, esi
sub dword [rbx + 0x10], esi
sub dword [rbx + 0x20], esi
add dword [rbx + 0x24], esi
mov ecx, esi
add qword [rbx + 8], rcx
cmp dword [rbx + 0x80], 0
mov dword [rbx + 0x74], eax
lea rax, [rsi + rdi]
mov qword [rbx + 0x18], rax
jne 0x140027b0b
test r14, r14
je 0x140027b0b
mov byte [r14], 1
jmp 0x140027b0b
mov edi, dword [rbx + 0x24]
lea rcx, [rbx + 8]
mov rsi, qword [rbx + 0x18]
call fcn.1400262a0
mov ebp, dword [rbx + 0x24]
mov rdx, rsi
mov ecx, dword [rbx + 0x74]
sub ebp, edi
mov r8d, ebp
mov r12d, eax
call fcn.140025cf0
mov ecx, dword [rbx + 0x80]
add r15d, ebp
sub ecx, ebp
mov dword [rbx + 0x74], eax
mov dword [rbx + 0x80], ecx
cmp r12d, 1
je 0x140027b4f
test ecx, ecx
je 0x140027b4f
test r12d, r12d
jne 0x140027b1a
cmp dword [rbx + 0x20], 0
ja 0x1400278c0
test r12d, r12d
je 0x140027b58
mov eax, r12d
mov rdi, qword [rsp + 0x28]
mov rsi, qword [rsp + 0x60]
mov rbp, qword [rsp + 0x58]
mov r13, qword [rsp + 0x20]
mov rbx, qword [rsp + 0x50]
add rsp, 0x30
pop r15
pop r14
pop r12
ret
mov eax, 0xffffffff
jmp 0x140027b1d
mov eax, 0xffffff96
jmp 0x140027b1d
test r14, r14
je 0x140027b58
mov byte [r14], 1
mov eax, r15d
jmp 0x140027b1d
mov rbx, qword [rsp + 0x50]
mov eax, 0xffffff9a
add rsp, 0x30
pop r15
pop r14
pop r12
ret