Function at 0x18003f780
Capabilities:
Encrypt data using rc4 prga

Disassembly:
mov qword [rsp + 0x10], rbx
mov qword [rsp + 0x18], rsi
mov qword [rsp + 0x20], rdi
push r12
push r14
push r15
sub rsp, 0x20
mov r10, qword [rcx]
mov r15d, r8d
mov r14, qword [rcx + 8]
mov rbx, rcx
mov esi, edx
mov rdi, qword [r10 + 0x10]
cmp r14, qword [rcx + 0x10]
jae 0x18003f9f9
movzx r9d, byte [rdi + rsi*8 + 5]
cmp r9b, 0x5a
jne 0x18003f817
movzx eax, byte [rdi + rsi*8 + 2]
and al, 0x1f
cmp al, 0x13
jne 0x18003f880
mov eax, dword [rbx + 0x18]
movzx ecx, word [rdi + rsi*8]
and eax, 0xf000
cmp eax, 0x1000
ja 0x18003f7f3
mov edx, ecx
inc r8d
mov rcx, rbx
call fcn.18003fdd0
jmp 0x18003f7fb
mov dword [r14], ecx
add qword [rbx + 8], 4
cmp dword [rbx + 0x1c], 0x15
jne 0x18003f810
mov rax, qword [rbx + 8]
mov dword [rax], 0x20000
add qword [rbx + 8], 4
xor eax, eax
jmp 0x18003f930
cmp r9b, 0x1c
jne 0x18003f880
test dword [rcx + 0x18], 0xf000
movsd xmm1, qword [rdi + rsi*8 + 8]
jne 0x18003f867
cvttsd2si rcx, xmm1
xorps xmm0, xmm0
cvtsi2sd xmm0, rcx
ucomisd xmm1, xmm0
jp 0x18003f9f9
jne 0x18003f9f9
mov dword [r14], 0x30000
add qword [rbx + 8], 4
mov rax, qword [rbx + 8]
mov dword [rax], ecx
add qword [rbx + 8], 4
xor eax, eax
jmp 0x18003f930
cvttsd2si ecx, xmm1
movsx eax, cx
cmp ecx, eax
jne 0x18003f9f9
movd xmm0, ecx
cvtdq2pd xmm0, xmm0
jmp 0x18003f839
movzx r11d, byte [r10 + 0xa5]
movzx r8d, word [r10 + r11*2 + 0x182]
cmp r8d, esi
jbe 0x18003f8db
movzx eax, word [rdi + r8*8]
cmp eax, esi
jne 0x18003f8d0
cmp r11b, 0x5b
je 0x18003f94a
movzx eax, word [rdi + r8*8 + 2]
xor eax, dword [rbx + 0x18]
test eax, 0xfff
jne 0x18003f8d0
movzx ecx, byte [rdi + r8*8 + 4]
movzx eax, byte [r10 + 0xa4]
and cl, 0x80
and al, 0x80
cmp cl, al
jae 0x18003f94a
movzx r8d, word [rdi + r8*8 + 6]
cmp r8d, esi
ja 0x18003f896
sub r9b, 0x29
mov qword [rsp + 0x40], rbp
cmp r9b, 1
ja 0x18003f9de
mov r8d, dword [rbx + 0x18]
mov eax, r8d
and eax, 0xf000
cmp eax, 0x2000
jne 0x18003f90d
test r15d, r15d
jle 0x18003f90d
add r8d, 0x1000
movzx edx, si
mov rcx, r10
call fcn.18003f740
test rax, rax
je 0x18003f956
movzx eax, word [rax + 2]
mov dword [r14], eax
add qword [rbx + 8], 4
xor eax, eax
mov rbp, qword [rsp + 0x40]
mov rbx, qword [rsp + 0x48]
mov rsi, qword [rsp + 0x50]
mov rdi, qword [rsp + 0x58]
add rsp, 0x20
pop r15
pop r14
pop r12
ret
mov dword [r14], r8d
add qword [rbx + 8], 4
xor eax, eax
jmp 0x18003f930
cmp dword [rbx + 0x1c], 0x15
jne 0x18003f987
mov r8d, 0x226e
mov rcx, r10
call fcn.18003f740
test rax, rax
je 0x18003f987
movzx eax, word [rax + 2]
mov dword [r14], eax
add qword [rbx + 8], 4
mov rax, qword [rbx + 8]
mov dword [rax], 0x20000
jmp 0x18003f924
inc r15d
cmp r15d, 0x64
jge 0x18003f9de
movzx edx, word [rdi + rsi*8]
mov r8d, r15d
mov rcx, rbx
call fcn.18003f780
movzx edx, word [rdi + rsi*8 + 2]
mov r8d, r15d
mov rcx, rbx
mov ebp, eax
call fcn.18003f780
add ebp, eax
cmp ebp, 1
jg 0x18003f9da
movzx ecx, byte [rdi + rsi*8 + 5]
mov rax, qword [rbx + 8]
shl ecx, 8
or ecx, dword [rbx + 0x1c]
shl ecx, 0x10
add ecx, esi
mov dword [rax], ecx
mov eax, ebp
add qword [rbx + 8], 4
jmp 0x18003f92b
mov qword [rbx + 8], r14
mov rax, qword [rbx + 8]
lea ecx, [rsi + 0x10000]
mov dword [rax], ecx
mov eax, 1
add qword [rbx + 8], 4
jmp 0x18003f92b
mov eax, 0xa
jmp 0x18003f930