Function at 0x51b590
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x84
call fcn.0040c2f0
mov eax, dword [0x59c024]
xor eax, esp
mov dword [esp + 0x80], eax
mov eax, dword [esp + 0x8c]
push ebx
mov ebx, dword [esp + 0x9c]
push ebp
mov ebp, dword [esp + 0x9c]
push esi
mov esi, dword [esp + 0x94]
mov dword [esp + 0x30], eax
lea eax, [esp + 0x34]
push edi
mov edi, dword [esp + 0xa0]
push eax
mov dword [esp + 0x18], esi
mov dword [esp + 0x34], edi
mov dword [esp + 0x1c], ebx
mov dword [esp + 0x24], 0
call fcn.004a0340
test ebp, ebp
push edi
cmove ebp, edi
mov dword [esp + 0x18], ebp
call fcn.004b6940
mov edi, eax
add esp, 8
test edi, edi
js 0x51b9b9
mov ebp, dword [esp + 0xac]
cmp ebp, 0xffffffff
jne 0x51b66f
mov ebp, edi
mov dword [esp + 0xac], ebp
push dword [esi + 0x10]
call fcn.0049c490
push dword [esp + 0x18]
lea esi, [eax - 1]
and esi, 7
mov dword [esp + 0x34], esi
call fcn.004a1280
mov edx, eax
mov ecx, esi
mov eax, 0xff
add esp, 8
shl eax, cl
test byte [ebx], al
je 0x51b698
push 0x76
push str..crypto_rsa_rsa_pss.c
push 0x85
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b9
cmp ebp, 0xfffffffe
jne 0x51b676
jmp 0x51b61b
jge 0x51b622
push 0x6f
push str..crypto_rsa_rsa_pss.c
push 0x88
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b9
test esi, esi
jne 0x51b6a2
inc ebx
dec edx
mov dword [esp + 0x18], ebx
lea eax, [edi + 2]
cmp edx, eax
jge 0x51b6c6
push 0x7e
push str..crypto_rsa_rsa_pss.c
push 0x6d
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b9
mov esi, edx
sub esi, edi
lea eax, [esi - 2]
cmp ebp, eax
jle 0x51b6d8
push 0x82
jmp 0x51b6ab
cmp byte [ebx + edx - 1], 0xbc
je 0x51b702
push 0x86
push str..crypto_rsa_rsa_pss.c
push 0x86
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b9
push 0x8b
dec esi
push str..crypto_rsa_rsa_pss.c
push esi
mov dword [esp + 0x28], esi
add ebx, esi
call fcn.00499590
mov ebp, eax
add esp, 0xc
test ebp, ebp
jne 0x51b742
push 0x8d
push str..crypto_rsa_rsa_pss.c
push 0x41
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b9
push dword [esp + 0x10]
push edi
push ebx
push esi
push ebp
call fcn.0050a8f0
add esp, 0x14
test eax, eax
js 0x51b9b0
xor ecx, ecx
mov dword [esp + 0x10], ecx
test esi, esi
jle 0x51b812
mov edx, dword [esp + 0x18]
cmp esi, 0x20
jb 0x51b7f8
lea eax, [edx - 1]
mov dword [esp + 0x10], ecx
add eax, esi
cmp ebp, eax
ja 0x51b78b
lea eax, [ebp - 1]
add eax, esi
cmp eax, edx
jae 0x51b7f8
mov eax, esi
and eax, 0x8000001f
jns 0x51b799
dec eax
or eax, 0xffffffe0
inc eax
mov dword [esp + 0x14], esi
mov ecx, edx
sub dword [esp + 0x14], eax
sub ecx, ebp
mov dword [esp + 0x24], ecx
mov eax, ebp
lea ecx, [edx + 0x10]
mov edx, dword [esp + 0x24]
mov dword [esp + 0x28], ecx
mov ecx, dword [esp + 0x10]
mov esi, dword [esp + 0x28]
nop
movups xmm0, xmmword [eax]
lea eax, [eax + 0x20]
movups xmm1, xmmword [edx + eax - 0x20]
pxor xmm1, xmm0
movups xmmword [eax - 0x20], xmm1
movups xmm1, xmmword [esi + ecx]
add ecx, 0x20
movups xmm0, xmmword [eax - 0x10]
pxor xmm1, xmm0
movups xmmword [eax - 0x10], xmm1
cmp ecx, dword [esp + 0x14]
jl 0x51b7c0
mov esi, dword [esp + 0x1c]
mov edx, dword [esp + 0x18]
mov dword [esp + 0x10], ecx
cmp ecx, esi
jge 0x51b812
add ecx, ebp
sub edx, ebp
sub esi, dword [esp + 0x10]
mov al, byte [ecx + edx]
lea ecx, [ecx + 1]
xor byte [ecx - 1], al
sub esi, 1
jne 0x51b804
mov eax, dword [esp + 0x2c]
test eax, eax
je 0x51b82b
mov ecx, 8
sub ecx, eax
mov eax, 0xff
sar eax, cl
and byte [ebp], al
mov ecx, dword [esp + 0x1c]
xor esi, esi
cmp byte [ebp], 0
jne 0x51b84b
lea eax, [ecx - 1]
nop word [eax + eax]
cmp esi, eax
jge 0x51b84b
inc esi
cmp byte [esi + ebp], 0
je 0x51b840
mov al, byte [esi + ebp]
inc esi
cmp al, 1
je 0x51b876
push 0x98
push str..crypto_rsa_rsa_pss.c
push 0x87
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b0
mov edx, dword [esp + 0xac]
test edx, edx
js 0x51b8ac
mov eax, ecx
sub eax, esi
cmp eax, edx
je 0x51b8ac
push 0x9c
push str..crypto_rsa_rsa_pss.c
push 0x88
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
jmp 0x51b9b0
push 0
push dword [esp + 0x34]
lea eax, [esp + 0x40]
push eax
call fcn.0049ff20
add esp, 0xc
test eax, eax
je 0x51b9b0
push 8
lea eax, [esp + 0x3c]
push 0x589898
push eax
call fcn.004a00d0
add esp, 0xc
test eax, eax
je 0x51b9b0
push edi
push dword [esp + 0x38]
lea eax, [esp + 0x40]
push eax
call fcn.004a00d0
add esp, 0xc
test eax, eax
je 0x51b9b0
mov eax, dword [esp + 0x1c]
sub eax, esi
je 0x51b91f
push eax
lea eax, [esi + ebp]
push eax
lea eax, [esp + 0x40]
push eax
call fcn.004a00d0
add esp, 0xc
test eax, eax
je 0x51b9b0
push 0
lea eax, [esp + 0x54]
push eax
lea eax, [esp + 0x40]
push eax
call fcn.0049fe80
add esp, 0xc
test eax, eax
je 0x51b9b0
lea ecx, [esp + 0x50]
sub edi, 4
jb 0x51b951
mov eax, dword [ecx]
cmp eax, dword [ebx]
jne 0x51b956
add ecx, 4
add ebx, 4
sub edi, 4
jae 0x51b940
cmp edi, 0xfffffffc
je 0x51b9a8
mov al, byte [ecx]
cmp al, byte [ebx]
jne 0x51b983
cmp edi, 0xfffffffd
je 0x51b9a8
mov al, byte [ecx + 1]
cmp al, byte [ebx + 1]
jne 0x51b983
cmp edi, 0xfffffffe
je 0x51b9a8
mov al, byte [ecx + 2]
cmp al, byte [ebx + 2]
jne 0x51b983
cmp edi, 0xffffffff
je 0x51b9a8
mov al, byte [ecx + 3]
cmp al, byte [ebx + 3]
je 0x51b9a8
push 0xaa
push str..crypto_rsa_rsa_pss.c
push 0x68
push 0x95
push 4
call fcn.004a6d60
add esp, 0x14
mov dword [esp + 0x20], 0
jmp 0x51b9b0
mov dword [esp + 0x20], 1
push ebp
call fcn.004994c0
add esp, 4
lea eax, [esp + 0x38]
push eax
call fcn.004a00e0
mov ecx, dword [esp + 0x94]
add esp, 4
mov eax, dword [esp + 0x20]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.0040c19b
add esp, 0x84
ret