Function at 0x586410
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ecx
push ebx
push ebp
push esi
mov esi, dword [esp + 0x14]
xor ecx, ecx
xor ebp, ebp
push edi
mov eax, dword [esi + 0x20]
sub eax, 0x20
mov dword [esi + 0x5c], 0
mov dword [esi + 0x24], eax
mov eax, dword [esi + 0x28]
mov dword [esi + 0x58], eax
mov word [esi + 0x56], 0
mov dword [esi + 0x30], 0
mov dword [eax + 8], eax
xor eax, eax
mov word [esi + 0x54], ax
cmp cx, word [esi + 0x80]
jge 0x58652d
mov eax, dword [esi + 0x8c]
push dword [esp + 0x1c]
mov dword [esi + 0x64], 0
mov dword [esi + 0x60], 0
movzx eax, word [eax + ebp*2]
push eax
push ecx
push esi
call fcn.00586850
add esp, 0x10
test al, al
jne 0x586664
mov eax, dword [esi + 0x8c]
mov edi, dword [esi + 4]
mov edx, dword [esi + 0x48]
movzx eax, word [eax + ebp*2]
mov dword [esp + 0x10], eax
lea eax, [edi - 1]
test edx, eax
jne 0x5864c3
cmp edx, dword [esi + 0x4c]
jl 0x5864c3
cmp edx, dword [esi + 0x50]
jg 0x5864c3
mov ecx, dword [esi + 0x60]
test ecx, ecx
je 0x5864c3
mov eax, dword [esi + 0x58]
mov cl, byte [ecx + 0xc]
xor cl, byte [eax + 0xc]
test cl, 8
jne 0x5864c3
add dword [esi + 0x28], 0xfffffffc
mov ebx, dword [esi + 0x58]
mov eax, dword [esi + 0x28]
cmp eax, dword [ebx + 8]
je 0x5864df
test byte [ebx + 0xc], 8
je 0x5864df
neg edi
and edi, edx
sub edx, edi
cmp edx, dword [esi + 8]
jmp 0x5864ed
lea eax, [edi - 1]
neg edi
add eax, edx
and eax, edi
sub eax, edx
cmp eax, dword [esi + 8]
setge byte [esp + 0x18]
push dword [esp + 0x18]
push esi
call fcn.00586fe0
add esp, 8
test al, al
jne 0x586664
mov eax, dword [esi + 0x60]
test eax, eax
je 0x586511
mov dword [ebx + 0x1c], eax
mov eax, dword [esp + 0x10]
inc ebp
inc eax
movzx ecx, ax
movsx eax, word [esi + 0x80]
cmp ebp, eax
jl 0x586456
movzx eax, word [esi + 0x54]
mov edi, dword [esi + 0x5c]
movzx ebp, ax
cmp ax, 1
jbe 0x58666c
test edi, edi
je 0x58666c
lea edx, [edi + 4]
mov dword [esp + 0x18], edx
cmp bp, 1
jbe 0x58655d
mov ecx, dword [edi + 0x10]
mov eax, dword [edi + 8]
lea eax, [eax + ecx*4]
jmp 0x58655f
xor eax, eax
mov dword [edx], eax
test byte [edi + 0xc], 8
mov ebx, dword [edi + 0x14]
mov edx, ebx
mov eax, dword [edi + 0x10]
je 0x586574
dec ebx
add ebx, eax
jmp 0x586584
sub edx, eax
lea eax, [eax*4 - 4]
inc edx
add dword [edi + 8], eax
mov dword [edi + 0x14], edx
mov eax, dword [esi + 0x30]
mov edi, dword [esi + 0x20]
lea ecx, [eax - 1]
shl eax, 2
sub edi, eax
test ecx, ecx
js 0x5865bd
mov eax, dword [edi + ecx*4]
cmp edx, eax
jge 0x5865a4
sub ecx, 1
jns 0x586596
jmp 0x5865bd
test ecx, ecx
js 0x5865bd
cmp edx, eax
jle 0x5865dd
nop dword [eax]
mov eax, dword [edi + ecx*4]
mov dword [edi + ecx*4], edx
sub ecx, 1
mov edx, eax
jns 0x5865b0
add dword [esi + 0x24], 0xfffffffc
mov eax, dword [esi + 0x24]
cmp eax, dword [esi + 0x28]
jbe 0x58665d
inc dword [esi + 0x30]
mov eax, dword [esi + 0x30]
mov ecx, dword [esi + 0x20]
shl eax, 2
sub ecx, eax
mov dword [ecx], edx
mov eax, dword [esi + 0x30]
lea edx, [ebx + 1]
mov edi, dword [esi + 0x20]
lea ecx, [eax - 1]
shl eax, 2
sub edi, eax
test ecx, ecx
js 0x58661d
mov eax, dword [edi + ecx*4]
cmp edx, eax
jge 0x586600
sub ecx, 1
jns 0x5865f2
jmp 0x58661d
test ecx, ecx
js 0x58661d
cmp edx, eax
jle 0x586639
nop dword [eax + eax]
mov eax, dword [edi + ecx*4]
mov dword [edi + ecx*4], edx
sub ecx, 1
mov edx, eax
jns 0x586610
add dword [esi + 0x24], 0xfffffffc
mov eax, dword [esi + 0x24]
cmp eax, dword [esi + 0x28]
jbe 0x58665d
inc dword [esi + 0x30]
mov eax, dword [esi + 0x30]
mov ecx, dword [esi + 0x20]
shl eax, 2
sub ecx, eax
mov dword [ecx], edx
mov edi, dword [esp + 0x18]
add ebp, 0xffff
mov edi, dword [edi]
test bp, bp
jne 0x586545
mov eax, dword [esi + 0x28]
cmp eax, dword [esi + 0x24]
pop edi
pop esi
pop ebp
setae al
pop ebx
pop ecx
ret
mov dword [esi + 0x2c], 0x62
pop edi
pop esi
pop ebp
mov al, 1
pop ebx
pop ecx
ret
mov eax, dword [esi + 0x28]
cmp eax, dword [esi + 0x24]
pop edi
mov dword [esi + 0x5c], 0
setae al
pop esi
pop ebp
pop ebx
pop ecx
ret