Function at 0x506edb
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 0x506f0a
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x506f14
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6151
test eax, eax
pop ecx
je 0x506f2f
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004edbee
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f3a13
test eax, eax
pop ecx
je 0x506f4a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004edbee
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x506f67
test ecx, 0x74000
jne 0x506f63
cmp dword [ebp - 0x24], eax
je 0x506f67
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x506fc1
dec eax
je 0x506fab
dec eax
je 0x506fa6
call fcn.004f5033
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5020
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004edcea
add esp, 0x14
jmp 0x507573
mov dword [ebp - 8], edx
jmp 0x506fc4
test cl, 8
je 0x506fb8
test ecx, 0x70000
jne 0x506fa6
mov dword [ebp - 8], 0x40000000
jmp 0x506fc4
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x507005
sub eax, ecx
je 0x506ffc
sub eax, ecx
je 0x506ff3
sub eax, ecx
je 0x506fea
sub eax, 0x40
jne 0x506f80
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x507008
mov dword [ebp - 0x10], 3
jmp 0x507008
mov dword [ebp - 0x10], 2
jmp 0x507008
mov dword [ebp - 0x10], 1
jmp 0x507008
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 0x50705b
je 0x507052
cmp eax, ebx
je 0x507052
cmp eax, edi
je 0x507049
cmp eax, 0x200
je 0x5070ce
cmp eax, 0x300
jne 0x506f80
mov dword [ebp - 0x14], 2
jmp 0x507078
mov dword [ebp - 0x14], 4
jmp 0x507078
mov dword [ebp - 0x14], 3
jmp 0x507078
cmp eax, 0x500
je 0x507071
cmp eax, 0x600
je 0x5070ce
cmp eax, edx
jne 0x506f80
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x50709c
mov ecx, dword [0x55bb34]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x50709c
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x5070b8
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x5070b8
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x5070c1
or dword [ebp - 0xc], edi
test al, 0x20
je 0x5070d7
or dword [ebp - 0xc], 0x8000000
jmp 0x5070e2
mov dword [ebp - 0x14], 5
jmp 0x507078
test al, 0x10
je 0x5070e2
or dword [ebp - 0xc], 0x10000000
call fcn.004f0f2b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x507108
call fcn.004f5033
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5020
mov dword [eax], 0x18
jmp 0x507196
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 0x5071a2
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x50716e
test byte [ebp + 0x10], 1
je 0x50716e
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 0x5071a2
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.004f5046
pop ecx
call fcn.004f5020
mov eax, dword [eax]
jmp 0x50762f
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x5071f3
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.004f5046
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x507196
call fcn.004f5020
mov dword [eax], 0xd
jmp 0x507196
cmp eax, 2
jne 0x5071fe
or byte [ebp - 1], 0x40
jmp 0x507207
cmp eax, 3
jne 0x507207
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f0cfa
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 0x5072dc
test cl, 0x80
je 0x5073ac
test byte [ebp + 0x10], 2
je 0x5072dc
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fb4dc
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x50729b
call fcn.004f5033
cmp dword [eax], 0x83
je 0x5072dc
push dword [esi]
call fcn.004fb0bb
jmp 0x507195
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004fc4a5
add esp, 0xc
test eax, eax
jne 0x5072cc
cmp byte [ebp - 4], 0x1a
jne 0x5072cc
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f07db
add esp, 0xc
cmp eax, edi
je 0x50728f
push ebx
push ebx
push dword [esi]
call fcn.004fb4dc
add esp, 0xc
cmp eax, edi
je 0x50728f
test byte [ebp - 1], 0x80
je 0x5073ac
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x507304
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x507301
or dword [ebp + 0x10], edi
jmp 0x507304
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x507351
cmp eax, 0x10000
je 0x50733d
cmp eax, 0x14000
je 0x50733d
cmp eax, 0x20000
je 0x50734b
cmp eax, 0x24000
je 0x50734b
cmp eax, 0x40000
je 0x507337
cmp eax, 0x44000
jne 0x507354
mov byte [ebp - 2], 1
jmp 0x507354
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x507354
mov byte [ebp - 2], 2
jmp 0x507354
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x5073ac
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x5073ac
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x507506
cmp eax, 0x80000000
je 0x5074cd
cmp eax, ecx
jne 0x5073ac
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5073ac
cmp eax, 2
jbe 0x5075ae
cmp eax, 4
jbe 0x50749f
cmp eax, 5
je 0x5075ae
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 0x50741e
test byte [ebp + 0x10], 8
je 0x50741e
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 0x50762d
test byte [ebp + 0x10], 1
je 0x50762d
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 0x507616
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5046
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.004f0d77
pop ecx
jmp 0x507195
push 2
push ebx
push ebx
push dword [esi]
call fcn.00501841
add esp, 0x10
or eax, edx
je 0x5075ae
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00501841
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x50728f
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fc4a5
add esp, 0xc
cmp eax, 0xffffffff
je 0x50728f
cmp eax, 2
je 0x507552
cmp eax, 3
jne 0x5075a0
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x507552
mov byte [ebp - 2], 1
jmp 0x5073ac
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5073ac
cmp eax, 2
jbe 0x5075ae
cmp eax, 4
ja 0x5073a3
push 2
push ebx
push ebx
push dword [esi]
call fcn.00501841
add esp, 0x10
or eax, edx
je 0x5075ae
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00501841
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x5073ac
jmp 0x50728f
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x50757a
push dword [esi]
call fcn.004fb0bb
pop ecx
call fcn.004f5020
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x50762f
cmp eax, 0xfeff
jne 0x5075a0
push ebx
push 2
push dword [esi]
call fcn.004fb4dc
add esp, 0xc
cmp eax, 0xffffffff
je 0x50728f
mov byte [ebp - 2], 2
jmp 0x5073ac
push ebx
push ebx
push dword [esi]
call fcn.004fb4dc
add esp, 0xc
jmp 0x507544
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x5075ce
dec eax
jne 0x5073ac
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x5075dc
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.00501684
add esp, 0xc
cmp eax, 0xffffffff
je 0x507602
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x5075dc
jmp 0x5073ac
push dword [esi]
call fcn.004fb0bb
pop ecx
call fcn.004f5020
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x50762f
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