Function at 0x51b930
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x2c
call fcn.00488be0
push ebx
push ebp
push esi
push edi
mov edi, dword [esp + 0x50]
xor esi, esi
mov eax, edi
mov dword [esp + 0x30], 0
shl eax, 4
add eax, 6
mov dword [esp + 0x18], 0
mov dword [esp + 0x28], 0
cmp eax, 0x1555555
ja 0x51c098
imul esi, edi, 0x600
push 0x257
push str.cryptoececp_nistz256.c
lea eax, [esi + 0x220]
push eax
call fcn.004c88b0
mov ebx, eax
add esp, 0xc
mov dword [esp + 0x14], ebx
test ebx, ebx
je 0x51c096
mov eax, edi
push 0x259
shl eax, 5
add eax, edi
push str.cryptoececp_nistz256.c
push eax
call fcn.004c88b0
mov ebp, eax
add esp, 0xc
mov dword [esp + 0x18], ebp
test ebp, ebp
je 0x51c092
push 0x25a
lea eax, [edi*4]
push str.cryptoececp_nistz256.c
push eax
call fcn.004c88b0
mov ecx, eax
add esp, 0xc
mov dword [esp + 0x28], ecx
test ecx, ecx
je 0x51c092
mov eax, ebx
mov dword [esp + 0x24], 0
and eax, 0xffffffc0
add eax, 0x40
add esi, eax
mov dword [esp + 0x1c], eax
test edi, edi
je 0x51bd03
mov edi, dword [esp + 0x48]
mov ebx, eax
lea eax, [ebp + 2]
mov dword [esp + 0x20], 0
mov dword [esp + 0x34], eax
mov eax, ecx
sub eax, edi
mov dword [esp + 0x10], ebx
sub dword [esp + 0x4c], edi
mov dword [esp + 0x38], eax
nop
push dword [edi]
call fcn.004c7240
add esp, 4
cmp eax, 0x100
jg 0x51ba57
push dword [edi]
call fcn.004c7100
add esp, 4
test eax, eax
jne 0x51ba57
mov ebp, dword [edi]
mov dword [esp + 0x2c], ebp
jmp 0x51ba8f
push dword [esp + 0x54]
call fcn.004cede0
mov ebp, eax
add esp, 4
mov dword [esp + 0x2c], ebp
test ebp, ebp
je 0x51c03b
mov eax, dword [esp + 0x40]
push dword [esp + 0x54]
push dword [eax + 8]
push dword [edi]
push ebp
call fcn.004f5980
add esp, 0x10
test eax, eax
je 0x51c084
mov eax, dword [esp + 0x24]
mov ecx, dword [esp + 0x28]
push dword [esp + 0x2c]
mov dword [ecx + eax*4], ebp
xor ebp, ebp
call fcn.004beb60
shl eax, 2
add esp, 4
test eax, eax
jle 0x51bb0f
mov edi, dword [esp + 0x34]
mov ebx, dword [esp + 0x38]
add edi, dword [esp + 0x20]
add ebx, dword [esp + 0x48]
nop
push dword [ebx]
call fcn.00476900
mov ecx, ebp
test ecx, ecx
jns 0x51bad0
add ecx, 3
sar ecx, 2
mov ecx, dword [eax + ecx*4]
lea edi, [edi + 4]
mov eax, ecx
mov byte [edi - 6], cl
shr eax, 8
add ebp, 4
mov byte [edi - 5], al
mov eax, ecx
shr eax, 0x10
shr ecx, 0x18
mov byte [edi - 4], al
mov byte [edi - 3], cl
push dword [ebx]
call fcn.004beb60
shl eax, 2
add esp, 8
cmp ebp, eax
jl 0x51bac0
mov ebx, dword [esp + 0x10]
cmp ebp, 0x21
jge 0x51bb2c
mov ecx, dword [esp + 0x20]
mov eax, 0x21
sub eax, ebp
add ecx, ebp
add ecx, dword [esp + 0x18]
push eax
push 0
push ecx
call fcn.00492cb0
add esp, 0xc
mov edi, dword [esp + 0x4c]
add edi, dword [esp + 0x48]
push 8
mov eax, dword [edi]
push dword [eax + 8]
push esi
call fcn.0051f320
add esp, 0xc
test eax, eax
je 0x51c01d
mov eax, dword [edi]
push 8
push dword [eax + 0xc]
lea eax, [esi + 0x20]
push eax
call fcn.0051f320
add esp, 0xc
test eax, eax
je 0x51c01d
mov eax, dword [edi]
push 8
push dword [eax + 0x10]
lea eax, [esi + 0x40]
push eax
call fcn.0051f320
add esp, 0xc
test eax, eax
je 0x51c01d
push 1
push esi
push ebx
call fcn.00431080
lea edi, [esi + 0x60]
push esi
push edi
call fcn.00431560
push 2
push edi
push ebx
call fcn.00431080
push esi
lea ebp, [esi + 0xc0]
push edi
push ebp
call fcn.00431760
push 3
push ebp
push ebx
call fcn.00431080
push edi
push edi
call fcn.00431560
add esp, 0x40
push 4
push edi
push ebx
call fcn.00431080
push ebp
push ebp
call fcn.00431560
push 6
push ebp
push ebx
call fcn.00431080
push esi
lea ebx, [esi + 0x120]
push edi
push ebx
call fcn.00431760
push 5
push ebx
push dword [esp + 0x44]
call fcn.00431080
push esi
lea edi, [esi + 0x180]
push ebp
push edi
call fcn.00431760
add esp, 0x44
push 7
push edi
push dword [esp + 0x18]
call fcn.00431080
lea eax, [esi + 0x60]
push eax
push eax
call fcn.00431560
push 8
lea eax, [esi + 0x60]
push eax
push dword [esp + 0x2c]
call fcn.00431080
push ebp
push ebp
call fcn.00431560
push 0xc
push ebp
push dword [esp + 0x40]
call fcn.00431080
push ebx
push ebx
call fcn.00431560
push 0xa
push ebx
push dword [esp + 0x54]
call fcn.00431080
add esp, 0x48
push edi
push edi
call fcn.00431560
push 0xe
push edi
push dword [esp + 0x20]
call fcn.00431080
push esi
push ebp
push ebp
call fcn.00431760
push 0xd
push ebp
push dword [esp + 0x38]
call fcn.00431080
push esi
push ebx
push ebx
call fcn.00431760
push 0xb
push ebx
mov ebx, dword [esp + 0x50]
push ebx
call fcn.00431080
add esp, 0x44
push esi
push edi
push edi
call fcn.00431760
push 0xf
push edi
push ebx
call fcn.00431080
push esi
lea ebx, [esi + 0x60]
push ebx
push ebp
call fcn.00431760
push 9
push ebp
push dword [esp + 0x3c]
call fcn.00431080
push ebx
push ebx
call fcn.00431560
push 0x10
push ebx
mov ebx, dword [esp + 0x50]
push ebx
call fcn.00431080
mov ebp, dword [esp + 0x68]
add ebx, 0x600
mov edi, dword [esp + 0x8c]
inc ebp
add dword [esp + 0x64], 0x21
add edi, 4
add esp, 0x44
mov dword [esp + 0x24], ebp
mov dword [esp + 0x10], ebx
mov dword [esp + 0x48], edi
cmp ebp, dword [esp + 0x50]
jb 0x51ba30
mov edi, dword [esp + 0x50]
mov eax, dword [esp + 0x18]
mov ebp, 0xff
mov dword [esp + 0x20], ebp
movzx ecx, byte [eax + 0x1f]
shr ecx, 6
mov eax, ecx
and ecx, 1
shr eax, 1
add eax, ecx
push eax
push dword [esp + 0x20]
push esi
call fcn.004310d0
movups xmm0, xmmword [esi]
mov ebx, dword [esp + 0x50]
add esp, 0xc
movups xmmword [ebx], xmm0
movups xmm0, xmmword [esi + 0x10]
movups xmmword [ebx + 0x10], xmm0
movups xmm0, xmmword [esi + 0x20]
movups xmmword [ebx + 0x20], xmm0
movups xmm0, xmmword [esi + 0x30]
movups xmmword [ebx + 0x30], xmm0
movups xmm0, xmmword [esi + 0x40]
movups xmmword [ebx + 0x40], xmm0
movups xmm0, xmmword [esi + 0x50]
movups xmmword [ebx + 0x50], xmm0
xor eax, eax
cmp ebp, 0xff
sete al
cmp eax, edi
jae 0x51bec1
lea edx, [ebp - 1]
mov ebp, eax
mov ecx, edx
shl ebp, 5
and ecx, 7
shr edx, 3
mov dword [esp + 0x38], ecx
add ebp, eax
imul ecx, eax, 0x600
mov dword [esp + 0x34], edx
add ecx, dword [esp + 0x1c]
sub edi, eax
mov dword [esp + 0x24], ecx
mov dword [esp + 0x2c], edi
mov ecx, dword [esp + 0x18]
lea eax, [edx + ebp]
movzx edx, byte [eax + ecx + 1]
movzx eax, byte [eax + ecx]
mov ecx, dword [esp + 0x38]
shl edx, 8
or edx, eax
shr edx, cl
mov ecx, 0x3f
and edx, 0x3f
mov eax, edx
sub ecx, edx
shr eax, 5
dec eax
mov edi, eax
and eax, edx
not edi
and ecx, edi
or ecx, eax
mov eax, ecx
and ecx, 1
shr eax, 1
add eax, ecx
and eax, 0x7fffffff
push eax
push dword [esp + 0x28]
push esi
call fcn.004310d0
lea eax, [esi + 0x20]
push eax
lea eax, [esi + 0x80]
push eax
call fcn.004303a0
mov eax, dword [esi + 0x20]
and edi, 1
neg edi
mov edx, edi
mov ecx, edi
and ecx, dword [esi + 0x80]
not edx
and eax, edx
xor ecx, eax
mov dword [esi + 0x20], ecx
mov ecx, edx
and ecx, dword [esi + 0x24]
mov eax, dword [esi + 0x84]
and eax, edi
xor ecx, eax
mov eax, edx
mov dword [esi + 0x24], ecx
and eax, dword [esi + 0x28]
mov ecx, dword [esi + 0x88]
and ecx, edi
xor ecx, eax
mov eax, edi
mov dword [esi + 0x28], ecx
and eax, dword [esi + 0x8c]
mov ecx, dword [esi + 0x2c]
and ecx, edx
xor ecx, eax
mov dword [esi + 0x2c], ecx
mov ecx, edx
and ecx, dword [esi + 0x30]
mov eax, dword [esi + 0x90]
and eax, edi
xor ecx, eax
mov dword [esi + 0x30], ecx
mov ecx, dword [esi + 0x34]
mov eax, dword [esi + 0x94]
and ecx, edx
and eax, edi
xor ecx, eax
mov dword [esi + 0x34], ecx
mov ecx, dword [esi + 0x38]
mov eax, dword [esi + 0x98]
and ecx, edx
and eax, edi
xor ecx, eax
mov dword [esi + 0x38], ecx
and edi, dword [esi + 0x9c]
and edx, dword [esi + 0x3c]
push esi
xor edi, edx
push ebx
push ebx
mov dword [esi + 0x3c], edi
call fcn.00431760
add dword [esp + 0x44], 0x600
lea ebp, [ebp + 0x21]
mov edx, dword [esp + 0x54]
add esp, 0x20
sub dword [esp + 0x2c], 1
jne 0x51bda1
mov ebp, dword [esp + 0x20]
mov edi, dword [esp + 0x50]
push ebx
sub ebp, 5
push ebx
mov dword [esp + 0x28], ebp
call fcn.00431560
push ebx
push ebx
call fcn.00431560
push ebx
push ebx
call fcn.00431560
push ebx
push ebx
call fcn.00431560
push ebx
push ebx
call fcn.00431560
add esp, 0x28
cmp ebp, 5
jae 0x51bd60
test edi, edi
je 0x51c013
mov eax, dword [esp + 0x18]
lea ebp, [esi + 0x20]
mov dword [esp + 0x2c], eax
nop word [eax + eax]
movzx edx, byte [eax]
mov ecx, 0x3f
and edx, 0x1f
add edx, edx
mov eax, edx
sub ecx, edx
shr eax, 5
dec eax
mov edi, eax
and eax, edx
not edi
and ecx, edi
or ecx, eax
mov eax, ecx
and ecx, 1
shr eax, 1
add eax, ecx
and eax, 0x7fffffff
push eax
push dword [esp + 0x20]
push esi
call fcn.004310d0
lea eax, [esi + 0x80]
push ebp
push eax
call fcn.004303a0
mov eax, dword [ebp]
and edi, 1
neg edi
mov edx, edi
mov ecx, edi
and ecx, dword [esi + 0x80]
not edx
and eax, edx
xor ecx, eax
mov dword [ebp], ecx
mov ecx, edx
and ecx, dword [ebp + 4]
mov eax, dword [esi + 0x84]
and eax, edi
xor ecx, eax
mov dword [ebp + 4], ecx
mov ecx, dword [esi + 0x28]
mov eax, dword [esi + 0x88]
and ecx, edx
and eax, edi
xor ecx, eax
mov eax, edi
mov dword [esi + 0x28], ecx
mov ecx, edx
and ecx, dword [esi + 0x2c]
and eax, dword [esi + 0x8c]
xor ecx, eax
mov eax, edi
mov dword [esi + 0x2c], ecx
mov ecx, edx
and ecx, dword [esi + 0x30]
and eax, dword [esi + 0x90]
xor ecx, eax
mov dword [esi + 0x30], ecx
mov ecx, dword [esi + 0x94]
mov eax, dword [esi + 0x34]
and ecx, edi
and eax, edx
xor ecx, eax
mov dword [esi + 0x34], ecx
mov ecx, dword [esi + 0x38]
mov eax, dword [esi + 0x98]
and ecx, edx
and eax, edi
xor ecx, eax
mov dword [esi + 0x38], ecx
and edx, dword [esi + 0x3c]
and edi, dword [esi + 0x9c]
push esi
xor edx, edi
push ebx
push ebx
mov dword [esi + 0x3c], edx
call fcn.00431760
add esp, 0x20
mov eax, dword [esp + 0x2c]
add dword [esp + 0x1c], 0x600
add eax, 0x21
sub dword [esp + 0x50], 1
mov dword [esp + 0x2c], eax
jne 0x51bf10
mov dword [esp + 0x30], 1
jmp 0x51c03b
push 0x289
push str.cryptoececp_nistz256.c
push 0x92
push 0xf2
push 0x10
call fcn.004bdd70
add esp, 0x14
mov esi, dword [esp + 0x14]
push 0x2eb
push str.cryptoececp_nistz256.c
push esi
call fcn.004c88f0
push 0x2ec
push str.cryptoececp_nistz256.c
push dword [esp + 0x2c]
call fcn.004c88f0
push 0x2ed
push str.cryptoececp_nistz256.c
push dword [esp + 0x48]
call fcn.004c88f0
mov eax, dword [esp + 0x54]
add esp, 0x24
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x2c
ret
push 0x26c
push str.cryptoececp_nistz256.c
push 3
jmp 0x51c02c
mov esi, ebx
jmp 0x51c098
mov esi, eax
push 0x25b
push str.cryptoececp_nistz256.c
push 0x41
push 0xf2
push 0x10
call fcn.004bdd70
add esp, 0x14
jmp 0x51c03f