Function at 0x1800219f0
Capabilities:
Encrypt data using rc4 ksa

Disassembly:
push rbx
push rbp
push rsi
push r13
push r15
sub rsp, 0x20
mov r15d, dword [rsp + 0x70]
mov ebx, r9d
mov ebp, r8d
mov r13d, edx
mov rsi, rcx
cmp r8d, edx
jne 0x180021a21
mov rax, rcx
add rsp, 0x20
pop r15
pop r13
pop rsi
pop rbp
pop rbx
ret
mov qword [rsp + 0x60], r14
test ebp, ebp
js 0x180021e19
test ebx, ebx
js 0x180021e19
je 0x180021a49
xor edx, edx
mov eax, 0x7fffffff
div ebx
cmp ebp, eax
jg 0x180021e19
mov ecx, ebp
imul ecx, ebx
test ecx, ecx
js 0x180021e19
test r15d, r15d
js 0x180021e19
je 0x180021a73
xor edx, edx
mov eax, 0x7fffffff
div r15d
cmp ecx, eax
jg 0x180021e19
imul ecx, r15d
movsxd rcx, ecx
call fcn.180042e50
mov r14, rax
test rax, rax
je 0x180021e19
mov qword [rsp + 0x50], rdi
xor edi, edi
mov qword [rsp + 0x58], r12
test r15d, r15d
jle 0x180021ddf
lea r12d, [r13*8 - 0xa]
add r12d, ebp
lea r11d, [rbx - 1]
lea r8, [0x180000000]
nop word [rax + rax]
mov r9d, edi
mov eax, edi
imul r9d, r13d
imul eax, ebp
imul r9d, ebx
imul eax, ebx
add r9, rsi
add rax, r14
cmp r12d, 0x19
ja case.0x180021af1.3
movsxd rcx, r12d
mov edx, dword [r8 + rcx*4 + 0x21e34]
add rdx, r8
jmp rdx
mov edx, r11d
test r11d, r11d
js 0x180021dd4
nop
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax], cl
lea r9, [r9 + 1]
mov byte [rax + 1], 0xff
lea rax, [rax + 2]
jns 0x180021b00
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
nop dword [rax + rax]
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax + 2], cl
lea r9, [r9 + 1]
mov byte [rax + 1], cl
mov byte [rax], cl
lea rax, [rax + 3]
jns 0x180021b30
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
nop word [rax + rax]
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax + 2], cl
lea r9, [r9 + 1]
mov byte [rax + 1], cl
mov byte [rax], cl
mov byte [rax + 3], 0xff
lea rax, [rax + 4]
jns 0x180021b60
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
nop
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax], cl
lea rax, [rax + 1]
lea r9, [r9 + 2]
jns 0x180021b90
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
nop dword [rax]
nop dword [rax + rax]
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax + 2], cl
lea r9, [r9 + 2]
mov byte [rax + 1], cl
mov byte [rax], cl
lea rax, [rax + 3]
jns 0x180021bc0
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
nop word [rax + rax]
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax + 2], cl
lea r9, [r9 + 2]
mov byte [rax + 1], cl
mov byte [rax], cl
lea rax, [rax + 4]
movzx ecx, byte [r9 - 1]
mov byte [rax - 1], cl
jns 0x180021bf0
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax], cl
lea rax, [rax + 4]
movzx ecx, byte [r9 + 1]
lea r9, [r9 + 3]
mov byte [rax - 3], cl
movzx ecx, byte [r9 - 1]
mov byte [rax - 2], cl
mov byte [rax - 1], 0xff
jns 0x180021c22
jmp 0x180021dd4
mov r10d, r11d
test r11d, r11d
js 0x180021dd4
nop word [rax + rax]
movzx ecx, byte [r9 + 1]
lea rax, [rax + 1]
imul r8d, ecx, 0x96
movzx ecx, byte [r9 + 2]
lea r9, [r9 + 3]
imul edx, ecx, 0x1d
movzx ecx, byte [r9 - 3]
add r8d, edx
imul edx, ecx, 0x4d
add r8d, edx
shr r8d, 8
sub r10d, 1
mov byte [rax - 1], r8b
jns 0x180021c60
lea r8, [0x180000000]
jmp 0x180021dd4
mov r10d, r11d
test r11d, r11d
js 0x180021dd4
movzx ecx, byte [r9 + 1]
lea rax, [rax + 2]
imul r8d, ecx, 0x96
movzx ecx, byte [r9 + 2]
lea r9, [r9 + 3]
imul edx, ecx, 0x1d
movzx ecx, byte [r9 - 3]
mov byte [rax - 1], 0xff
add r8d, edx
imul edx, ecx, 0x4d
add r8d, edx
shr r8d, 8
sub r10d, 1
mov byte [rax - 2], r8b
jns 0x180021cb0
lea r8, [0x180000000]
jmp 0x180021dd4
mov r10d, r11d
test r11d, r11d
js 0x180021dd4
nop dword [rax]
nop dword [rax + rax]
movzx ecx, byte [r9 + 1]
lea rax, [rax + 1]
imul r8d, ecx, 0x96
movzx ecx, byte [r9 + 2]
lea r9, [r9 + 4]
imul edx, ecx, 0x1d
movzx ecx, byte [r9 - 4]
add r8d, edx
imul edx, ecx, 0x4d
add r8d, edx
shr r8d, 8
sub r10d, 1
mov byte [rax - 1], r8b
jns 0x180021d10
lea r8, [0x180000000]
jmp 0x180021dd4
mov r10d, r11d
test r11d, r11d
js 0x180021dd4
nop dword [rax]
movzx ecx, byte [r9 + 1]
lea rax, [rax + 2]
imul r8d, ecx, 0x96
movzx ecx, byte [r9 + 2]
lea r9, [r9 + 4]
imul edx, ecx, 0x1d
movzx ecx, byte [r9 - 4]
add r8d, edx
imul edx, ecx, 0x4d
add r8d, edx
shr r8d, 8
sub r10d, 1
mov byte [rax - 2], r8b
movzx ecx, byte [r9 - 1]
mov byte [rax - 1], cl
jns 0x180021d60
lea r8, [0x180000000]
jmp 0x180021dd4
mov edx, r11d
test r11d, r11d
js 0x180021dd4
sub edx, 1
movzx ecx, byte [r9]
mov byte [rax], cl
lea rax, [rax + 3]
movzx ecx, byte [r9 + 1]
lea r9, [r9 + 4]
mov byte [rax - 2], cl
movzx ecx, byte [r9 - 2]
mov byte [rax - 1], cl
jns 0x180021db1
inc edi
cmp edi, r15d
jl 0x180021ac0
mov rcx, rsi
call fcn.180042ba0
mov rax, r14
mov r12, qword [rsp + 0x58]
mov rdi, qword [rsp + 0x50]
mov r14, qword [rsp + 0x60]
add rsp, 0x20
pop r15
pop r13
pop rsi
pop rbp
pop rbx
ret
mov rcx, rsi
call fcn.180042ba0
mov rcx, r14
call fcn.180042ba0
xor eax, eax
jmp 0x180021dea
mov rcx, rsi
call fcn.180042ba0
mov r14, qword [rsp + 0x60]
xor eax, eax
add rsp, 0x20
pop r15
pop r13
pop rsi
pop rbp
pop rbx
ret