Thread: binary Bomb defuse help

  1. #1
    Registered User
    Join Date
    Sep 2010

    binary Bomb defuse help

    Hi i need help to figure out this part of the assembly to defuse the bomb. I cant figure out what are the six numbers .. please help
    Dump of assembler code for function phase_2:
    0x080489ab <phase_2+0>: push   %ebp
    0x080489ac <phase_2+1>: mov    %esp,%ebp
    0x080489ae <phase_2+3>: push   %ebx
    0x080489af <phase_2+4>: sub    $0x34,%esp
    0x080489b2 <phase_2+7>: lea    -0x1c(%ebp),%eax
    0x080489b5 <phase_2+10>:        mov    %eax,0x4(%esp)
    0x080489b9 <phase_2+14>:        mov    0x8(%ebp),%eax
    0x080489bc <phase_2+17>:        mov    %eax,(%esp)
    0x080489bf <phase_2+20>:        call   0x8048d82 <read_six_numbers>
    0x080489c4 <phase_2+25>:        cmpl   $0x0,-0x1c(%ebp)
    0x080489c8 <phase_2+29>:        jne    0x80489d0 <phase_2+37>
    0x080489ca <phase_2+31>:        cmpl   $0x1,-0x18(%ebp)
    0x080489ce <phase_2+35>:        je     0x80489d5 <phase_2+42>
    0x080489d0 <phase_2+37>:        call   0x8048d58 <explode_bomb>
    0x080489d5 <phase_2+42>:        lea    -0x14(%ebp),%ebx
    0x080489d8 <phase_2+45>:        mov    -0x8(%ebx),%eax
    0x080489db <phase_2+48>:        add    -0x4(%ebx),%eax
    0x080489de <phase_2+51>:        cmp    %eax,(%ebx)
    0x080489e0 <phase_2+53>:        je     0x80489e7 <phase_2+60>
    0x080489e2 <phase_2+55>:        call   0x8048d58 <explode_bomb>
    0x080489e7 <phase_2+60>:        add    $0x4,%ebx
    0x080489ea <phase_2+63>:        lea    -0x4(%ebp),%eax
    0x080489ed <phase_2+66>:        cmp    %eax,%ebx
    0x080489ef <phase_2+68>:        jne    0x80489d8 <phase_2+45>
    0x080489f1 <phase_2+70>:        add    $0x34,%esp
    0x080489f4 <phase_2+73>:        pop    %ebx
    0x080489f5 <phase_2+74>:        pop    %ebp
    0x080489f6 <phase_2+75>:        ret    
    End of assembler dump.
    disas read_six_numbers
    Dump of assembler code for function read_six_numbers:
    0x08048d82 <read_six_numbers+0>:        push   %ebp
    0x08048d83 <read_six_numbers+1>:        mov    %esp,%ebp
    0x08048d85 <read_six_numbers+3>:        sub    $0x28,%esp
    0x08048d88 <read_six_numbers+6>:        mov    0xc(%ebp),%edx
    0x08048d8b <read_six_numbers+9>:        lea    0x14(%edx),%eax
    0x08048d8e <read_six_numbers+12>:       mov    %eax,0x1c(%esp)
    0x08048d92 <read_six_numbers+16>:       lea    0x10(%edx),%eax
    0x08048d95 <read_six_numbers+19>:       mov    %eax,0x18(%esp)
    0x08048d99 <read_six_numbers+23>:       lea    0xc(%edx),%eax
    0x08048d9c <read_six_numbers+26>:       mov    %eax,0x14(%esp)
    0x08048da0 <read_six_numbers+30>:       lea    0x8(%edx),%eax
    0x08048da3 <read_six_numbers+33>:       mov    %eax,0x10(%esp)
    0x08048da7 <read_six_numbers+37>:       lea    0x4(%edx),%eax
    0x08048daa <read_six_numbers+40>:       mov    %eax,0xc(%esp)
    0x08048dae <read_six_numbers+44>:       mov    %edx,0x8(%esp)
    0x08048db2 <read_six_numbers+48>:       movl   $0x80492dc,0x4(%esp)
    0x08048dba <read_six_numbers+56>:       mov    0x8(%ebp),%eax
    0x08048dbd <read_six_numbers+59>:       mov    %eax,(%esp)
    0x08048dc0 <read_six_numbers+62>:       call   0x8048530 <sscanf@plt>
    0x08048dc5 <read_six_numbers+67>:       cmp    $0x5,%eax
    0x08048dc8 <read_six_numbers+70>:       jg     0x8048dcf <read_six_numbers+77>
    0x08048dca <read_six_numbers+72>:       call   0x8048d58 <explode_bomb>
    0x08048dcf <read_six_numbers+77>:       leave  
    0x08048dd0 <read_six_numbers+78>:       ret    
    End of assembler dump.

  2. #2
    Join Date
    Aug 2010
    Ontario Canada
    While I'm sure lots of people here know assembler... this is a C forum.

  3. #3
    Registered User
    Join Date
    Oct 2008
    For starters explain the program i.e. what it's (not) doing, instead of just posting code and assuming others can read your mind.

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