Function at 0x140039f10
Capabilities:
Encode data using xor
Encrypt data using rc4 ksa

Disassembly:
mov qword [rsp + 8], rcx
push rsi
push rdi
push r15
sub rsp, 0x20
mov r15, rcx
xor edi, edi
mov rcx, qword [rcx]
mov rsi, rdx
mov dword [rsp + 0x50], edi
cmp dword [r15 + 0x14], edi
jle 0x14003a63a
mov qword [rsp + 0x48], rbx
mov qword [rsp + 0x18], rbp
mov qword [rsp + 0x10], r12
mov qword [rsp + 8], r13
mov qword [rsp], r14
nop
movsxd rax, dword [r15 + 0x1c]
mov r14, rcx
mov r13d, dword [r14]
lea rcx, [rcx + rax*4]
dec r13d
mov qword [rsp + 0x58], rcx
test r13d, r13d
jle 0x14003a612
mov edx, dword [r15 + 0xc]
add r14, 4
mov rbx, qword [rsi + 8]
add edx, edi
mov r10, qword [rsi]
xor r8d, r8d
movsxd rax, edx
sub edx, dword [rsi + 0x18]
mov r9d, dword [r14]
movsxd rcx, dword [r10 + 0x14]
imul rcx, rax
mov eax, edx
add rcx, qword [r10]
cdq
mov qword [rsi + 0x20], rcx
idiv dword [rbx + 0x20]
movsxd rax, dword [rbx + 0x14]
movsxd rcx, edx
imul rcx, rax
add rcx, qword [rbx]
sub r13d, 1
mov qword [rsi + 0x28], rcx
js 0x14003a41d
nop dword [rax]
mov r15d, dword [r14 + 4]
lea r14, [r14 + 8]
mov r12d, dword [r14]
mov eax, r12d
cdq
movzx ebp, dl
add ebp, eax
mov eax, r9d
cdq
sar ebp, 8
movzx edx, dl
add eax, edx
sar eax, 8
mov ecx, eax
cmp ebp, eax
jne 0x140039ffb
mov eax, r12d
sub eax, r9d
imul eax, r15d
add r8d, eax
jmp 0x14003a400
movzx eax, r9b
mov edx, 0x100
sub edx, eax
imul edx, r15d
lea eax, [r8 + rdx]
cdq
movzx edx, dl
add eax, edx
sar eax, 8
mov edi, eax
test eax, eax
jle 0x14003a1f5
mov rdx, qword [rsi]
mov eax, ecx
mov r8, qword [rsi + 8]
imul eax, dword [rdx + 0x18]
cmp edi, 0xff
jl 0x14003a113
movsxd rdi, eax
mov eax, ecx
sub eax, dword [rsi + 0x14]
add rdi, qword [rsi + 0x20]
cdq
idiv dword [r8 + 0x1c]
mov rax, qword [rsi + 0x28]
imul edx, dword [r8 + 0x18]
movsxd r8, edx
mov edx, 0x100
mov r9d, dword [r8 + rax]
mov ebx, r9d
shr ebx, 8
and r9d, 0xff00ff
imul r9d, dword [rsi + 0x10]
and ebx, 0xff00ff
imul ebx, dword [rsi + 0x10]
mov r8d, 0x100
shr r9d, 8
shr ebx, 8
and r9d, 0xff00ff
and ebx, 0xff00ff
mov eax, ebx
shr eax, 0x10
sub edx, eax
mov eax, dword [rdi]
mov r11d, eax
shr eax, 8
and eax, 0xff00ff
and r11d, 0xff00ff
imul eax, edx
imul r11d, edx
mov edx, 0x100
shr eax, 8
and eax, 0xff00ff
shr r11d, 8
add ebx, eax
and r11d, 0xff00ff
add r11d, r9d
mov eax, ebx
shr eax, 8
and eax, 0xff00ff
shl ebx, 8
sub r8d, eax
mov eax, r11d
shl r8d, 8
shr eax, 8
or r8d, ebx
and eax, 0xff00ff
and r8d, 0xff00ff00
sub edx, eax
or edx, r11d
and edx, 0xff00ff
xor edx, r8d
mov dword [rdi], edx
jmp 0x14003a1f5
imul edi, dword [rsi + 0x10]
movsxd rbx, eax
mov eax, ecx
sub eax, dword [rsi + 0x14]
add rbx, qword [rsi + 0x20]
cdq
idiv dword [r8 + 0x1c]
mov rax, qword [rsi + 0x28]
imul edx, dword [r8 + 0x18]
sar edi, 8
movsxd r8, edx
mov edx, 0x100
mov r9d, dword [r8 + rax]
mov r11d, r9d
shr r11d, 8
and r9d, 0xff00ff
and r11d, 0xff00ff
imul r9d, edi
imul r11d, edi
mov r8d, 0x100
shr r9d, 8
shr r11d, 8
and r9d, 0xff00ff
and r11d, 0xff00ff
mov eax, r11d
shr eax, 0x10
sub edx, eax
mov eax, dword [rbx]
mov r10d, eax
shr eax, 8
and eax, 0xff00ff
and r10d, 0xff00ff
imul eax, edx
imul r10d, edx
mov edx, 0x100
shr eax, 8
and eax, 0xff00ff
shr r10d, 8
add r11d, eax
and r10d, 0xff00ff
add r10d, r9d
mov eax, r11d
shr eax, 8
and eax, 0xff00ff
shl r11d, 8
sub r8d, eax
mov eax, r10d
shl r8d, 8
shr eax, 8
or r8d, r11d
and eax, 0xff00ff
and r8d, 0xff00ff00
sub edx, eax
or edx, r10d
and edx, 0xff00ff
xor edx, r8d
mov dword [rbx], edx
test r15d, r15d
jle 0x14003a3f8
inc ecx
sub ebp, ecx
test ebp, ebp
jle 0x14003a3f8
mov rax, qword [rsi]
mov ebx, r15d
imul ebx, dword [rsi + 0x10]
movsxd rdx, dword [rax + 0x18]
mov eax, edx
imul eax, ecx
sub ecx, dword [rsi + 0x14]
sar ebx, 8
movsxd r11, eax
add r11, qword [rsi + 0x20]
cmp ebx, 0xfe
jge 0x14003a32c
mov rdi, rdx
nop dword [rax]
mov r8, qword [rsi + 8]
mov eax, ecx
cdq
inc ecx
dec ebp
idiv dword [r8 + 0x1c]
mov rax, qword [rsi + 0x28]
imul edx, dword [r8 + 0x18]
mov r8d, dword [r11]
movsxd rdx, edx
mov r10d, dword [rdx + rax]
mov r9d, r10d
shr r9d, 8
and r10d, 0xff00ff
and r9d, 0xff00ff
imul r10d, ebx
imul r9d, ebx
mov edx, 0x100
shr r10d, 8
shr r9d, 8
and r10d, 0xff00ff
and r9d, 0xff00ff
mov eax, r9d
shr eax, 0x10
sub edx, eax
mov eax, r8d
shr r8d, 8
and eax, 0xff00ff
imul eax, edx
and r8d, 0xff00ff
imul r8d, edx
mov edx, 0x100
shr eax, 8
and eax, 0xff00ff
shr r8d, 8
add r10d, eax
and r8d, 0xff00ff
add r9d, r8d
mov r8d, 0x100
mov eax, r9d
shl r9d, 8
shr eax, 8
and eax, 0xff00ff
sub r8d, eax
mov eax, r10d
shl r8d, 8
shr eax, 8
or r8d, r9d
and eax, 0xff00ff
and r8d, 0xff00ff00
sub edx, eax
or edx, r10d
and edx, 0xff00ff
xor edx, r8d
mov dword [r11], edx
add r11, rdi
test ebp, ebp
jg 0x14003a240
jmp 0x14003a3f8
mov rbx, rdx
nop
mov r8, qword [rsi + 8]
mov eax, ecx
cdq
inc ecx
dec ebp
idiv dword [r8 + 0x1c]
mov rax, qword [rsi + 0x28]
imul edx, dword [r8 + 0x18]
movsxd rdx, edx
mov r8d, dword [rdx + rax]
mov r10d, r8d
and r8d, 0xff00ff
shr r10d, 8
and r10d, 0xff00ff
mov edx, 0x100
mov eax, r10d
shr eax, 0x10
sub edx, eax
mov eax, dword [r11]
mov r9d, eax
shr eax, 8
and eax, 0xff00ff
and r9d, 0xff00ff
imul eax, edx
imul r9d, edx
mov edx, 0x100
shr eax, 8
and eax, 0xff00ff
shr r9d, 8
add r10d, eax
and r9d, 0xff00ff
add r9d, r8d
mov eax, r10d
shr eax, 8
mov r8d, 0x100
and eax, 0xff00ff
shl r10d, 8
sub r8d, eax
mov eax, r9d
shl r8d, 8
shr eax, 8
or r8d, r10d
and eax, 0xff00ff
and r8d, 0xff00ff00
sub edx, eax
or edx, r9d
and edx, 0xff00ff
xor edx, r8d
mov dword [r11], edx
add r11, rbx
test ebp, ebp
jg 0x14003a330
movzx r8d, r12b
imul r8d, r15d
sub r13d, 1
mov r9d, r12d
jns 0x140039fc0
mov r10, qword [rsi]
mov rbx, qword [rsi + 8]
mov edi, dword [rsp + 0x50]
mov r15, qword [rsp + 0x40]
mov eax, r8d
cdq
movzx edx, dl
add eax, edx
sar eax, 8
mov r11d, eax
test eax, eax
jle 0x14003a60d
mov eax, r9d
cdq
movzx edx, dl
add eax, edx
sar eax, 8
mov edx, eax
cmp r11d, 0xff
jl 0x14003a52e
sub edx, dword [rsi + 0x14]
mov ecx, eax
imul ecx, dword [r10 + 0x18]
mov eax, edx
cdq
idiv dword [rbx + 0x1c]
mov rax, qword [rsi + 0x28]
imul edx, dword [rbx + 0x18]
movsxd r11, ecx
add r11, qword [rsi + 0x20]
movsxd rcx, edx
mov edx, dword [r11]
mov r10d, dword [rcx + rax]
mov r9d, r10d
shr r9d, 8
and r10d, 0xff00ff
imul r10d, dword [rsi + 0x10]
and r9d, 0xff00ff
imul r9d, dword [rsi + 0x10]
mov ecx, 0x100
shr r10d, 8
shr r9d, 8
and r10d, 0xff00ff
and r9d, 0xff00ff
mov eax, r9d
shr eax, 0x10
sub ecx, eax
mov eax, edx
shr edx, 8
and eax, 0xff00ff
imul eax, ecx
and edx, 0xff00ff
imul edx, ecx
mov ecx, 0x100
shr eax, 8
and eax, 0xff00ff
shr edx, 8
add r10d, eax
and edx, 0xff00ff
add r9d, edx
mov edx, 0x100
mov eax, r9d
shl r9d, 8
shr eax, 8
and eax, 0xff00ff
sub edx, eax
mov eax, r10d
shl edx, 8
shr eax, 8
or edx, r9d
and eax, 0xff00ff
and edx, 0xff00ff00
sub ecx, eax
or ecx, r10d
and ecx, 0xff00ff
xor ecx, edx
mov dword [r11], ecx
jmp 0x14003a60d
imul eax, dword [r10 + 0x18]
sub edx, dword [rsi + 0x14]
imul r11d, dword [rsi + 0x10]
movsxd r10, eax
mov eax, edx
add r10, qword [rsi + 0x20]
cdq
idiv dword [rbx + 0x1c]
mov rax, qword [rsi + 0x28]
imul edx, dword [rbx + 0x18]
sar r11d, 8
movsxd rcx, edx
mov edx, dword [r10]
mov r9d, dword [rcx + rax]
mov r8d, r9d
shr r8d, 8
and r9d, 0xff00ff
and r8d, 0xff00ff
imul r9d, r11d
imul r8d, r11d
mov ecx, 0x100
shr r9d, 8
shr r8d, 8
and r9d, 0xff00ff
and r8d, 0xff00ff
mov eax, r8d
shr eax, 0x10
sub ecx, eax
mov eax, edx
shr edx, 8
and eax, 0xff00ff
imul eax, ecx
and edx, 0xff00ff
imul edx, ecx
mov ecx, 0x100
shr eax, 8
and eax, 0xff00ff
shr edx, 8
add r9d, eax
and edx, 0xff00ff
add r8d, edx
mov edx, 0x100
mov eax, r8d
shl r8d, 8
shr eax, 8
and eax, 0xff00ff
sub edx, eax
mov eax, r9d
shl edx, 8
shr eax, 8
or edx, r8d
and eax, 0xff00ff
and edx, 0xff00ff00
sub ecx, eax
or ecx, r9d
and ecx, 0xff00ff
xor ecx, edx
mov dword [r10], ecx
mov rcx, qword [rsp + 0x58]
inc edi
mov dword [rsp + 0x50], edi
cmp edi, dword [r15 + 0x14]
jl 0x140039f50
mov r14, qword [rsp]
mov r13, qword [rsp + 8]
mov r12, qword [rsp + 0x10]
mov rbp, qword [rsp + 0x18]
mov rbx, qword [rsp + 0x48]
add rsp, 0x20
pop r15
pop rdi
pop rsi
ret