Function at 0x508957
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x38
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 - 0x38], 0xc
mov dword [ebp - 0x34], ebx
je 0x508986
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x508990
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f7061
test eax, eax
pop ecx
je 0x5089ab
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004eeaee
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f491c
test eax, eax
pop ecx
je 0x5089c6
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004eeaee
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x5089e3
test ecx, 0x74000
jne 0x5089df
cmp dword [ebp - 0x24], eax
je 0x5089e3
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x508a3d
dec eax
je 0x508a27
dec eax
je 0x508a22
call fcn.004f5f43
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5f30
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004eebea
add esp, 0x14
jmp 0x508ff0
mov dword [ebp - 8], edx
jmp 0x508a40
test cl, 8
je 0x508a34
test ecx, 0x70000
jne 0x508a22
mov dword [ebp - 8], 0x40000000
jmp 0x508a40
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x508a81
sub eax, ecx
je 0x508a78
sub eax, ecx
je 0x508a6f
sub eax, ecx
je 0x508a66
sub eax, 0x40
jne 0x5089fc
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x508a84
mov dword [ebp - 0x10], 3
jmp 0x508a84
mov dword [ebp - 0x10], 2
jmp 0x508a84
mov dword [ebp - 0x10], 1
jmp 0x508a84
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 0x508ad7
je 0x508ace
cmp eax, ebx
je 0x508ace
cmp eax, edi
je 0x508ac5
cmp eax, 0x200
je 0x508b4a
cmp eax, 0x300
jne 0x5089fc
mov dword [ebp - 0x14], 2
jmp 0x508af4
mov dword [ebp - 0x14], 4
jmp 0x508af4
mov dword [ebp - 0x14], 3
jmp 0x508af4
cmp eax, 0x500
je 0x508aed
cmp eax, 0x600
je 0x508b4a
cmp eax, edx
jne 0x5089fc
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x508b18
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x508b18
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x508b34
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x508b34
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x508b3d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x508b53
or dword [ebp - 0xc], 0x8000000
jmp 0x508b5e
mov dword [ebp - 0x14], 5
jmp 0x508af4
test al, 0x10
je 0x508b5e
or dword [ebp - 0xc], 0x10000000
call fcn.004f1e3b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x508b84
call fcn.004f5f43
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5f30
mov dword [eax], 0x18
jmp 0x508c12
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileW]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x38]
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 0x508c1e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x508bea
test byte [ebp + 0x10], 1
je 0x508bea
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
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 0x508c1e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ef40]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5f56
pop ecx
call fcn.004f5f30
mov eax, dword [eax]
jmp 0x5090ac
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x508c6f
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ef40]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5f56
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x508c12
call fcn.004f5f30
mov dword [eax], 0xd
jmp 0x508c12
cmp eax, 2
jne 0x508c7a
or byte [ebp - 1], 0x40
jmp 0x508c83
cmp eax, 3
jne 0x508c83
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f1c0a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55ef40]
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 + 0x55ef40]
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 0x508d59
test cl, 0x80
je 0x508e29
test byte [ebp + 0x10], 2
je 0x508d59
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc3ec
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x508d17
call fcn.004f5f43
cmp dword [eax], 0x83
je 0x508d59
push dword [esi]
call fcn.004fbfcb
jmp 0x508c11
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fd3b5
add esp, 0xc
test eax, eax
jne 0x508d49
cmp word [ebp - 0x2c], 0x1a
jne 0x508d49
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f14e4
add esp, 0xc
cmp eax, edi
je 0x508d0b
push ebx
push ebx
push dword [esi]
call fcn.004fc3ec
add esp, 0xc
cmp eax, edi
je 0x508d0b
test byte [ebp - 1], 0x80
je 0x508e29
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x508d81
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x508d7e
or dword [ebp + 0x10], edi
jmp 0x508d81
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x508dce
cmp eax, 0x10000
je 0x508dba
cmp eax, 0x14000
je 0x508dba
cmp eax, 0x20000
je 0x508dc8
cmp eax, 0x24000
je 0x508dc8
cmp eax, 0x40000
je 0x508db4
cmp eax, 0x44000
jne 0x508dd1
mov byte [ebp - 2], 1
jmp 0x508dd1
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x508dd1
mov byte [ebp - 2], 2
jmp 0x508dd1
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x508e29
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x508e29
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508f83
cmp eax, 0x80000000
je 0x508f4a
cmp eax, ecx
jne 0x508e29
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508e29
cmp eax, 2
jbe 0x50902b
cmp eax, 4
jbe 0x508f1c
cmp eax, 5
je 0x50902b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
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 + 0x55ef40]
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 0x508e9b
test byte [ebp + 0x10], 8
je 0x508e9b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
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 0x5090aa
test byte [ebp + 0x10], 1
je 0x5090aa
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
cmp eax, 0xffffffff
jne 0x509093
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5f56
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f1c87
pop ecx
jmp 0x508c11
push 2
push ebx
push ebx
push dword [esi]
call fcn.005026de
add esp, 0x10
or eax, edx
je 0x50902b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005026de
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x508d0b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd3b5
add esp, 0xc
cmp eax, 0xffffffff
je 0x508d0b
cmp eax, 2
je 0x508fcf
cmp eax, 3
jne 0x50901d
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x508fcf
mov byte [ebp - 2], 1
jmp 0x508e29
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508e29
cmp eax, 2
jbe 0x50902b
cmp eax, 4
ja 0x508e20
push 2
push ebx
push ebx
push dword [esi]
call fcn.005026de
add esp, 0x10
or eax, edx
je 0x50902b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005026de
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x508e29
jmp 0x508d0b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x508ff7
push dword [esi]
call fcn.004fbfcb
pop ecx
call fcn.004f5f30
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x5090ac
cmp eax, 0xfeff
jne 0x50901d
push ebx
push 2
push dword [esi]
call fcn.004fc3ec
add esp, 0xc
cmp eax, 0xffffffff
je 0x508d0b
mov byte [ebp - 2], 2
jmp 0x508e29
push ebx
push ebx
push dword [esi]
call fcn.004fc3ec
add esp, 0xc
jmp 0x508fc1
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x50904b
dec eax
jne 0x508e29
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x509059
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.00502602
add esp, 0xc
cmp eax, 0xffffffff
je 0x50907f
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x509059
jmp 0x508e29
push dword [esi]
call fcn.004fbfcb
pop ecx
call fcn.004f5f30
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x5090ac
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret