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ooKu9yaiV4a/follow_the_white_rabbit.asm Secret

Created October 31, 2017 13:38
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follow_the_white_rabbit.asm
format ELF executable 3
entry _
segment readable writeable executable
_:
mov ecx, pwnd
mov edx, ecx
add ecx, n
jmp .C
db 0x83,0xb0,0x01,0xcd,0x80
.A:
add al, 0x2f
mov byte [edx], al
.B:
inc edx
cmp edx, ecx
je $-11
.C:
movzx eax, byte [edx]
lea ebx, [eax - 0x21]
cmp bl, 0x5d
ja .B
cmp al, 0x4f
jle .A
sub al, 0x2f
inc edx
mov byte [edx - 0x01], al
cmp edx, ecx
jne .C
jmp $-38
pwnd db 0x64,0x35,0x34,0x61,0x32,0x63,0x67,0x34,0x60,0x61,0x64,0x37,0x36, \
0x5f,0x37,0x60,0x64,0x66,0x37,0x67,0x33,0x61,0x37,0x32,0x61,0x34, \
0x66,0x60,0x36,0x67,0x62,0x5d,0x34,0x40,0x3e,0x0a
n = $ - pwnd
@JamPsym
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JamPsym commented Dec 1, 2017

Trudność 2/10. Mało napracowania.

@pawlos
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pawlos commented Dec 1, 2017

Ale za kreatywność +10 :)

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