Function at 0x51aa8f
Capabilities:
Encrypt data using rc4 ksa

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x58
mov eax, dword [0x5d3640]
xor eax, ebp
mov dword [ebp - 4], eax
mov ecx, dword [ebp + 8]
lea edx, [ebp - 0xc]
push ebx
push esi
push edi
mov eax, dword [ecx]
push 8
push edx
mov dword [ebp - 0x54], ecx
call dword [eax]
push 8
xor ebx, ebx
lea eax, [ebp - 0xc]
push ebx
push eax
call fcn.00556ca1
add esp, 0xc
test eax, eax
je 0x51aace
xor eax, eax
jmp 0x51af73
push ebx
push ebx
push ebx
push str.1.5.19
call fcn.00557f1b
push eax
mov dword [ebp - 0x10], eax
call fcn.0055636f
push 0x40
push 0x5214d1
push dword [ebp - 0x10]
mov dword [ebp - 0x14], eax
call fcn.00555640
push ebx
push eax
call fcn.005214f0
add esp, 0x28
test eax, eax
je 0x51ab0b
mov edi, ebx
jmp 0x51af60
push 0x51af82
push dword [ebp - 0x54]
push dword [ebp - 0x10]
call fcn.0055d037
push 8
push dword [ebp - 0x10]
call fcn.00556c6f
mov ecx, dword [ebp - 0x10]
add esp, 0x14
cmp byte [ecx + 0x13c], 8
jb 0x51ab46
cmp byte [ecx + 0x13b], 3
je 0x51ab46
mov eax, dword [ebp - 0x14]
test byte [eax + 8], 0x10
je 0x51ab50
push ecx
call fcn.0055ca13
pop ecx
mov ecx, dword [ebp - 0x10]
push 1
push 0xff
push ecx
call fcn.0055cf3a
push dword [ebp - 0x10]
call fcn.0055cfbd
push dword [ebp - 0x10]
call fcn.0055ca41
push dword [ebp - 0x10]
call fcn.0055ca61
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.0055871e
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.00558dce
mov eax, dword [ebp - 0x10]
push 0x18
mov ebx, dword [eax + 0xe4]
mov esi, dword [eax + 0xe8]
shl ebx, 2
imul esi, ebx
mov dword [ebp - 0x58], ebx
mov dword [ebp - 0x2c], esi
call fcn.00534202
push 0x18
mov edi, eax
push 0
push edi
mov dword [ebp - 0x3c], edi
call fcn.0051f6b0
mov ecx, dword [ebp - 0x10]
mov ecx, dword [ecx + 0xe4]
mov dword [edi + 8], ecx
mov eax, dword [ebp - 0x10]
mov eax, dword [eax + 0xe8]
mov dword [edi + 0xc], eax
imul eax, ebx
push eax
call fcn.00534202
push esi
push 0
push eax
mov dword [ebp - 0x30], eax
call fcn.0051f6b0
mov ecx, dword [edi + 0xc]
add esp, 0x48
shl ecx, 2
push ecx
call fcn.00534202
pop ecx
xor ecx, ecx
mov dword [ebp - 0x48], eax
cmp dword [edi + 0xc], ecx
jle 0x51ac11
mov edx, dword [ebp - 0x30]
mov dword [eax + ecx*4], edx
inc ecx
add edx, ebx
cmp ecx, dword [edi + 0xc]
jl 0x51ac06
push 0x10000
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.0055d0b1
add esp, 0xc
test eax, eax
jne 0x51ac42
push dword [ebp - 0x48]
push dword [ebp - 0x10]
call fcn.00558680
mov eax, dword [ebp - 0x30]
mov dword [edi + 0x10], 1
jmp 0x51af44
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.0055d079
mov dword [edi + 0x10], eax
imul eax, esi
push eax
call fcn.00534202
push esi
mov dword [ebp - 0x50], eax
call fcn.00534202
push esi
push 0
push eax
mov dword [ebp - 0x20], eax
call fcn.0051f6b0
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.0055d095
mov dword [edi + 0x14], eax
mov eax, dword [edi + 0x10]
add eax, eax
push eax
call fcn.00534202
and dword [ebp - 0x18], 0
add esp, 0x28
cmp dword [edi + 0x10], 0
mov dword [edi + 4], eax
jle 0x51af31
mov eax, dword [ebp - 0x50]
mov edx, dword [ebp - 0x14]
mov dword [ebp - 0x40], eax
sub eax, esi
mov dword [ebp - 0x44], eax
push edx
push dword [ebp - 0x10]
call fcn.00558588
push 0x20000
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.0055d0b1
add esp, 0x14
test eax, eax
je 0x51ad15
mov eax, dword [ebp - 0x14]
movzx ecx, word [eax + 0x106]
movzx edx, word [eax + 0x104]
test cx, cx
je 0x51ad17
cmp ecx, 0x64
je 0x51ad17
mov esi, dword [edi + 4]
push 0xa
pop eax
cmp cx, ax
jne 0x51acf4
imul eax, edx, 0xa
jmp 0x51ad07
mov eax, edx
mov edx, 0x3e8
cmp cx, dx
jne 0x51ad10
push 0xa
pop ecx
xor edx, edx
div ecx
mov ecx, dword [ebp - 0x18]
mov word [esi + ecx*2], ax
jmp 0x51ad21
imul eax, eax, 0x64
jmp 0x51ad03
xor edx, edx
mov ecx, dword [ebp - 0x18]
mov eax, dword [edi + 4]
mov word [eax + ecx*2], dx
push dword [ebp - 0x48]
push dword [ebp - 0x10]
call fcn.00558680
mov edx, dword [ebp - 0x14]
pop ecx
pop ecx
mov ecx, dword [edx + 0x100]
mov eax, dword [edx + 0xfc]
movzx esi, byte [edx + 0x109]
imul ecx, ebx
add ecx, dword [ebp - 0x20]
sub esi, 0
mov dword [ebp - 0x1c], esi
mov esi, dword [ebp - 0x2c]
lea ecx, [ecx + eax*4]
mov eax, dword [ebp - 0x30]
mov dword [ebp - 0x28], ecx
mov dword [ebp - 0x38], eax
je 0x51ae46
sub dword [ebp - 0x1c], 1
jne 0x51ae89
and dword [ebp - 0x1c], 0
cmp dword [edx + 0xf8], 0
jbe 0x51ae89
mov esi, dword [edx + 0xf4]
mov dword [ebp - 0x34], esi
mov esi, dword [ebp - 0x1c]
and dword [ebp - 0x4c], 0
mov edi, ecx
cmp dword [ebp - 0x34], 0
mov dword [ebp - 0x24], eax
jbe 0x51ae2a
mov ebx, eax
movzx edx, byte [ebx + 3]
mov esi, 0xff
movzx ecx, byte [ebx]
sub esi, edx
movzx eax, byte [edi]
lea ebx, [ebx + 4]
imul ecx, edx
imul eax, esi
add ecx, eax
sar ecx, 8
mov byte [edi], cl
lea edi, [edi + 4]
movzx ecx, byte [ebx - 3]
movzx eax, byte [edi - 3]
imul ecx, edx
imul eax, esi
add ecx, eax
movzx eax, byte [edi - 2]
sar ecx, 8
mov byte [edi - 3], cl
movzx ecx, byte [ebx - 2]
imul ecx, edx
imul eax, esi
add ecx, eax
movzx eax, byte [edi - 1]
sar ecx, 8
mov byte [edi - 2], cl
movzx ecx, byte [ebx - 1]
imul ecx, edx
imul eax, esi
add ecx, eax
sar ecx, 8
mov byte [edi - 1], cl
mov edx, dword [ebp - 0x14]
mov ecx, dword [ebp - 0x4c]
inc ecx
mov dword [ebp - 0x4c], ecx
mov eax, dword [edx + 0xf4]
mov dword [ebp - 0x34], eax
cmp ecx, eax
jb 0x51ada1
mov ebx, dword [ebp - 0x58]
mov ecx, dword [ebp - 0x28]
mov eax, dword [ebp - 0x38]
mov esi, dword [ebp - 0x1c]
add ecx, ebx
add eax, ebx
inc esi
mov dword [ebp - 0x28], ecx
mov dword [ebp - 0x38], eax
mov dword [ebp - 0x1c], esi
cmp esi, dword [edx + 0xf8]
jb 0x51ad8c
jmp 0x51ae83
and dword [ebp - 0x24], 0
cmp dword [edx + 0xf8], 0
jbe 0x51ae89
mov esi, dword [ebp - 0x38]
mov edi, dword [ebp - 0x24]
mov eax, dword [edx + 0xf4]
shl eax, 2
push eax
push esi
push ecx
call fcn.0051f130
mov ecx, dword [ebp - 0x28]
add esp, 0xc
mov edx, dword [ebp - 0x14]
add ecx, ebx
add esi, ebx
mov dword [ebp - 0x28], ecx
inc edi
cmp edi, dword [edx + 0xf8]
jb 0x51ae59
mov esi, dword [ebp - 0x2c]
mov edi, dword [ebp - 0x3c]
push esi
push dword [ebp - 0x20]
push dword [ebp - 0x40]
call fcn.0051f130
mov edx, dword [ebp - 0x14]
add esp, 0xc
mov ecx, dword [edx + 0x100]
mov eax, dword [edx + 0xfc]
imul ecx, ebx
add ecx, dword [ebp - 0x20]
lea eax, [ecx + eax*4]
mov dword [ebp - 0x34], eax
movzx eax, byte [edx + 0x108]
sub eax, 1
je 0x51aedf
sub eax, 1
mov eax, dword [ebp - 0x18]
jne 0x51af1e
test eax, eax
je 0x51af1e
push esi
push dword [ebp - 0x44]
push dword [ebp - 0x20]
call fcn.0051f130
mov edx, dword [ebp - 0x14]
add esp, 0xc
jmp 0x51af1b
and dword [ebp - 0x24], 0
cmp dword [edx + 0xf8], 0
jbe 0x51af1b
mov esi, dword [ebp - 0x24]
mov edi, dword [ebp - 0x34]
mov eax, dword [edx + 0xf4]
shl eax, 2
push eax
push 0
push edi
call fcn.0051f6b0
mov edx, dword [ebp - 0x14]
add esp, 0xc
add edi, ebx
inc esi
cmp esi, dword [edx + 0xf8]
jb 0x51aef2
mov edi, dword [ebp - 0x3c]
mov esi, dword [ebp - 0x2c]
mov eax, dword [ebp - 0x18]
add dword [ebp - 0x40], esi
inc eax
add dword [ebp - 0x44], esi
mov dword [ebp - 0x18], eax
cmp eax, dword [edi + 0x10]
jl 0x51aca9
push dword [ebp - 0x20]
call fcn.005231b0
push dword [ebp - 0x30]
call fcn.005231b0
mov eax, dword [ebp - 0x50]
pop ecx
pop ecx
push dword [ebp - 0x48]
mov dword [edi], eax
call fcn.005231b0
push dword [ebp - 0x14]
push dword [ebp - 0x10]
call fcn.00558340
add esp, 0xc
xor ebx, ebx
push ebx
lea eax, [ebp - 0x14]
push eax
lea eax, [ebp - 0x10]
push eax
call fcn.0055810e
add esp, 0xc
mov eax, edi
mov ecx, dword [ebp - 4]
pop edi
pop esi
xor ecx, ebp
pop ebx
call fcn.00510479
leave
ret