Function at 0x506eab
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
push ebx
xor ebx, ebx
test byte [ebp + 0x10], 0x80
push esi
push edi
mov esi, eax
mov dword [ebp - 0x24], ebx
mov dword [ebp - 0x28], ebx
mov byte [ebp - 2], bl
mov dword [ebp - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x506eda
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x506ee4
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6111
test eax, eax
pop ecx
je 0x506eff
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004edbae
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f39d3
test eax, eax
pop ecx
je 0x506f1a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004edbae
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x506f37
test ecx, 0x74000
jne 0x506f33
cmp dword [ebp - 0x24], eax
je 0x506f37
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x506f91
dec eax
je 0x506f7b
dec eax
je 0x506f76
call fcn.004f4ff3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f4fe0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004edcaa
add esp, 0x14
jmp 0x507543
mov dword [ebp - 8], edx
jmp 0x506f94
test cl, 8
je 0x506f88
test ecx, 0x70000
jne 0x506f76
mov dword [ebp - 8], 0x40000000
jmp 0x506f94
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x506fd5
sub eax, ecx
je 0x506fcc
sub eax, ecx
je 0x506fc3
sub eax, ecx
je 0x506fba
sub eax, 0x40
jne 0x506f50
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x506fd8
mov dword [ebp - 0x10], 3
jmp 0x506fd8
mov dword [ebp - 0x10], 2
jmp 0x506fd8
mov dword [ebp - 0x10], 1
jmp 0x506fd8
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, 0x100
jg 0x50702b
je 0x507022
cmp eax, ebx
je 0x507022
cmp eax, edi
je 0x507019
cmp eax, 0x200
je 0x50709e
cmp eax, 0x300
jne 0x506f50
mov dword [ebp - 0x14], 2
jmp 0x507048
mov dword [ebp - 0x14], 4
jmp 0x507048
mov dword [ebp - 0x14], 3
jmp 0x507048
cmp eax, 0x500
je 0x507041
cmp eax, 0x600
je 0x50709e
cmp eax, edx
jne 0x506f50
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x50706c
mov ecx, dword [0x55bb34]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x50706c
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x507088
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x507088
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x507091
or dword [ebp - 0xc], edi
test al, 0x20
je 0x5070a7
or dword [ebp - 0xc], 0x8000000
jmp 0x5070b2
mov dword [ebp - 0x14], 5
jmp 0x507048
test al, 0x10
je 0x5070b2
or dword [ebp - 0xc], 0x10000000
call fcn.004f0e9b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x5070d8
call fcn.004f4ff3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f4fe0
mov dword [eax], 0x18
jmp 0x507166
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x507172
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x50713e
test byte [ebp + 0x10], 1
je 0x50713e
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push dword [ebp - 0x14]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x507172
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ce80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5006
pop ecx
call fcn.004f4fe0
mov eax, dword [eax]
jmp 0x5075ff
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x5071c3
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ce80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5006
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x507166
call fcn.004f4fe0
mov dword [eax], 0xd
jmp 0x507166
cmp eax, 2
jne 0x5071ce
or byte [ebp - 1], 0x40
jmp 0x5071d7
cmp eax, 3
jne 0x5071d7
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f0c6a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55ce80]
pop ecx
pop ecx
mov cl, byte [ebp - 1]
or cl, 1
mov byte [edx + eax + 4], cl
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55ce80]
lea eax, [edx + eax + 0x24]
and byte [eax], 0x80
mov byte [ebp - 3], cl
and byte [ebp - 3], 0x48
mov byte [ebp - 1], cl
jne 0x5072ac
test cl, 0x80
je 0x50737c
test byte [ebp + 0x10], 2
je 0x5072ac
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fb49c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x50726b
call fcn.004f4ff3
cmp dword [eax], 0x83
je 0x5072ac
push dword [esi]
call fcn.004fb07b
jmp 0x507165
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004fc465
add esp, 0xc
test eax, eax
jne 0x50729c
cmp byte [ebp - 4], 0x1a
jne 0x50729c
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f074b
add esp, 0xc
cmp eax, edi
je 0x50725f
push ebx
push ebx
push dword [esi]
call fcn.004fb49c
add esp, 0xc
cmp eax, edi
je 0x50725f
test byte [ebp - 1], 0x80
je 0x50737c
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x5072d4
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x5072d1
or dword [ebp + 0x10], edi
jmp 0x5072d4
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x507321
cmp eax, 0x10000
je 0x50730d
cmp eax, 0x14000
je 0x50730d
cmp eax, 0x20000
je 0x50731b
cmp eax, 0x24000
je 0x50731b
cmp eax, 0x40000
je 0x507307
cmp eax, 0x44000
jne 0x507324
mov byte [ebp - 2], 1
jmp 0x507324
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x507324
mov byte [ebp - 2], 2
jmp 0x507324
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x50737c
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x50737c
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x5074d6
cmp eax, 0x80000000
je 0x50749d
cmp eax, ecx
jne 0x50737c
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x50737c
cmp eax, 2
jbe 0x50757e
cmp eax, 4
jbe 0x50746f
cmp eax, 5
je 0x50757e
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
lea eax, [ecx + eax + 0x24]
mov cl, byte [eax]
xor cl, byte [ebp - 2]
and cl, 0x7f
xor byte [eax], cl
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
lea eax, [ecx + eax + 0x24]
mov ecx, dword [ebp + 0x10]
mov dl, byte [eax]
shr ecx, 0x10
shl cl, 7
and dl, 0x7f
or cl, dl
cmp byte [ebp - 3], bl
mov byte [eax], cl
jne 0x5073ee
test byte [ebp + 0x10], 8
je 0x5073ee
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
lea eax, [ecx + eax + 4]
or byte [eax], 0x20
mov edi, dword [ebp - 8]
mov eax, 0xc0000000
mov ecx, edi
and ecx, eax
cmp ecx, eax
jne 0x5075fd
test byte [ebp + 0x10], 1
je 0x5075fd
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x5075e6
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5006
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f0ce7
pop ecx
jmp 0x507165
push 2
push ebx
push ebx
push dword [esi]
call fcn.00501801
add esp, 0x10
or eax, edx
je 0x50757e
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00501801
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x50725f
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fc465
add esp, 0xc
cmp eax, 0xffffffff
je 0x50725f
cmp eax, 2
je 0x507522
cmp eax, 3
jne 0x507570
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x507522
mov byte [ebp - 2], 1
jmp 0x50737c
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x50737c
cmp eax, 2
jbe 0x50757e
cmp eax, 4
ja 0x507373
push 2
push ebx
push ebx
push dword [esi]
call fcn.00501801
add esp, 0x10
or eax, edx
je 0x50757e
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00501801
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x50737c
jmp 0x50725f
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x50754a
push dword [esi]
call fcn.004fb07b
pop ecx
call fcn.004f4fe0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x5075ff
cmp eax, 0xfeff
jne 0x507570
push ebx
push 2
push dword [esi]
call fcn.004fb49c
add esp, 0xc
cmp eax, 0xffffffff
je 0x50725f
mov byte [ebp - 2], 2
jmp 0x50737c
push ebx
push ebx
push dword [esi]
call fcn.004fb49c
add esp, 0xc
jmp 0x507514
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x50759e
dec eax
jne 0x50737c
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x5075ac
mov dword [ebp - 0x18], 0xbfbbef
mov dword [ebp - 0x14], 3
mov eax, dword [ebp - 0x14]
sub eax, edi
push eax
lea eax, [ebp + edi - 0x18]
push eax
push dword [esi]
call fcn.00501644
add esp, 0xc
cmp eax, 0xffffffff
je 0x5075d2
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x5075ac
jmp 0x50737c
push dword [esi]
call fcn.004fb07b
pop ecx
call fcn.004f4fe0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x5075ff
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret