Function at 0x18004dca0
Capabilities:
Encrypt data using rc4 prga

Disassembly:
mov rax, rsp
mov qword [rax + 8], rbx
mov qword [rax + 0x10], rbp
mov qword [rax + 0x18], rsi
mov qword [rax + 0x20], r14
push r15
sub rsp, 0x20
cmp dword [rcx + 0x4838], 0
mov rsi, r8
movsxd rbp, r9d
mov r14, rdx
mov rbx, rcx
je 0x18004dcf8
mov edx, dword [0x18011d4f4]
mov rax, qword gs:[0x58]
mov rax, qword [rax + rdx*8]
lea rdx, str.cant_merge_dc_and_ac
mov ecx, 0x180
mov qword [rcx + rax], rdx
xor eax, eax
jmp 0x18004df91
cmp dword [rcx + 0x4824], 0x10
jge 0x18004dd06
call fcn.18004d6b0
cmp dword [rbx + 0x483c], 0
jne 0x18004df42
xor edx, edx
mov r8d, 0x80
mov rcx, r14
call fcn.180081ce0
cmp dword [rbx + 0x4824], 0x10
jge 0x18004dd34
mov rcx, rbx
call fcn.18004d6b0
mov r10d, dword [rbx + 0x4820]
lea r15, [0x180000000]
mov eax, r10d
shr rax, 0x17
cmp byte [rax + rsi], 0xff
jae 0x18004dd8b
movzx edx, byte [rax + rsi]
mov r9d, dword [rbx + 0x4824]
movzx ecx, byte [rdx + rsi + 0x500]
cmp ecx, r9d
jg 0x18004dcce
shl r10d, cl
sub r9d, ecx
mov dword [rbx + 0x4820], r10d
mov dword [rbx + 0x4824], r9d
mov al, byte [rdx + rsi + 0x400]
jmp 0x18004de21
mov ecx, r10d
lea rax, [rsi + 0x62c]
shr ecx, 0x10
mov r11d, 0xa
jmp 0x18004dda7
inc r11d
lea rax, [rax + 4]
cmp ecx, dword [rax]
jae 0x18004dda0
mov r9d, dword [rbx + 0x4824]
cmp r11d, 0x11
jne 0x18004ddc7
lea eax, [r9 - 0x10]
mov dword [rbx + 0x4824], eax
jmp 0x18004dcce
cmp r11d, r9d
jg 0x18004dcce
movsxd r8, r11d
mov ecx, 0x20
sub ecx, r11d
mov edx, r10d
shr edx, cl
and edx, dword [r15 + r8*4 + 0xdcbd0]
mov r8d, dword [rsi + r8*4 + 0x64c]
add r8d, edx
cmp r8d, 0xff
ja 0x18004dcce
sub r9d, r11d
movsxd rax, r8d
mov ecx, r11d
mov dword [rbx + 0x4824], r9d
shl r10d, cl
mov dword [rbx + 0x4820], r10d
mov al, byte [rax + rsi + 0x400]
movzx esi, al
cmp esi, 0xf
ja 0x18004dcce
test al, al
je 0x18004de8f
cmp r9d, esi
jge 0x18004de3e
mov rcx, rbx
call fcn.18004d6b0
mov r10d, dword [rbx + 0x4824]
cmp r10d, esi
jl 0x18004de8f
mov r9d, dword [rbx + 0x4820]
sub r10d, esi
mov edx, dword [r15 + rsi*4 + 0xdcbd0]
mov r8d, r9d
shr r9d, 0x1f
mov eax, edx
dec r9d
mov dword [rbx + 0x4824], r10d
and r9d, dword [r15 + rsi*4 + 0xdcb40]
mov ecx, esi
rol r8d, cl
not eax
and eax, r8d
and edx, r8d
add r9d, edx
mov dword [rbx + 0x4820], eax
jmp 0x18004de92
xor r9d, r9d
lea r8, [rbp*2]
mov eax, r9d
add r8, rbp
not eax
shl r8, 5
mov edx, dword [r8 + rbx + 0x46b8]
mov ecx, edx
not ecx
xor ecx, eax
js 0x18004df02
test edx, edx
jns 0x18004ded0
test r9d, r9d
jns 0x18004ded0
xor ecx, ecx
mov eax, 0x80000000
sub eax, r9d
cmp edx, eax
setge cl
jmp 0x18004dedf
xor ecx, ecx
mov eax, 0x7fffffff
sub eax, r9d
cmp edx, eax
setle cl
test ecx, ecx
jne 0x18004df02
mov edx, dword [0x18011d4f4]
mov rax, qword gs:[0x58]
mov rax, qword [rax + rdx*8]
lea rdx, str.bad_delta
jmp 0x18004dce8
lea esi, [rdx + r9]
mov r11d, 1
mov dword [r8 + rbx + 0x46b8], esi
mov ecx, dword [rbx + 0x4840]
shl r11w, cl
movzx ecx, si
movzx edx, r11w
call fcn.18004cf98
test eax, eax
je 0x18004dcce
movsx eax, si
movsx ecx, r11w
imul ecx, eax
mov word [r14], cx
jmp 0x18004df8c
cmp dword [rbx + 0x4824], 1
jge 0x18004df53
mov rcx, rbx
call fcn.18004d6b0
mov eax, dword [rbx + 0x4824]
cmp eax, 1
jl 0x18004df8c
mov edx, dword [rbx + 0x4820]
lea ecx, [rdx + rdx]
mov dword [rbx + 0x4820], ecx
lea ecx, [rax - 1]
mov dword [rbx + 0x4824], ecx
test edx, edx
jns 0x18004df8c
mov ecx, dword [rbx + 0x4840]
mov edx, 1
shl dx, cl
add word [r14], dx
mov eax, 1
mov rbx, qword [rsp + 0x30]
mov rbp, qword [rsp + 0x38]
mov rsi, qword [rsp + 0x40]
mov r14, qword [rsp + 0x48]
add rsp, 0x20
pop r15
ret