Solved

what input will diffuse bomb?

Posted on 2009-05-15
1
332 Views
Last Modified: 2012-05-07
this is decompiled assembly.

it looks like this accepts two numbers as input.

from what i can tell Vfffffffc   must be between 0-4 and eax must be equal to Vfffffff8 or function explode_bomb is called.

the value of Vfffffffc    determines which case of the switch statement is executed.... then the code jumps to the value of "goto"... then the rest of the statements are excuted.

is that accurate?
/*	Procedure: 0x08048EC1 - 0x08048F80

 *	Argument size: -76

 *	Local size: 40

 *	Save regs size: 0

 *	Called by:

 *		main()

 */
 

phase_3(A8)

/* unknown */ void  A8;

{

	/* unknown */ void  V0;

	/* unknown */ void  V4;

	/* unknown */ void  V8;

	/* unknown */ void  Vfffffff8;

	/* unknown */ void  Vfffffffc;
 

    V8 = & Vfffffff8;

    V4 = & Vfffffffc;

    V0 = "%d %d";

    *esp = A8;

    if(L080489D4() <= 1) {

        explode_bomb();

    }

    if(Vfffffffc <= 7) {

        switch(Vfffffffc) {

            case 0:

                eax = 0x304;

                goto L08048f3e;

            case 1:

                eax = 0;

                goto L08048f3e;

            case 2:

                eax = 0;

                asm("o16 nop");

                goto L08048f43;

            case 3:

                eax = 0;

                goto L08048f48;

            case 4:

                eax = 0;

                asm("o16 nop");

                goto L08048f4b;

            case 5:

                eax = 0;

                goto L08048f50;

            case 6:

                eax = 0;

                asm("o16 nop");

                goto L08048f55;

            case 7:

L08048f02:

                eax = 0;

                goto L08048f5a;

        }

        goto L08048f02;

L08048f3e:

        eax = eax - 0x3ba;

L08048f43:

        eax = eax + 0x134;

L08048f48:

        eax = eax - 0x74;

L08048f4b:

        eax = eax + 0x118;

L08048f50:

        eax = eax - 0x308;

L08048f55:

        eax = eax + 0x308;

L08048f5a:

        eax = eax - 0xa4;

    } else {

        explode_bomb();

        eax = 0;

    }

    if(Vfffffffc > 5 || eax != Vfffffff8) {

        eax = explode_bomb();

    }

}

Open in new window

0
Comment
Question by:braker15
1 Comment
 
LVL 1

Accepted Solution

by:
braker15 earned 0 total points
ID: 24401197
nevermind i figured it out
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
Convert image to byte array 8 173
List out all word 7 224
Crystal Report for VS2013 17 42
Raspberry Pi 3 to send text message 6 7
Summary: This tutorial covers some basics of pointer, pointer arithmetic and function pointer. What is a pointer: A pointer is a variable which holds an address. This address might be address of another variable/address of devices/address of fu…
This is a short and sweet, but (hopefully) to the point article. There seems to be some fundamental misunderstanding about the function prototype for the "main" function in C and C++, more specifically what type this function should return. I see so…
The goal of this video is to provide viewers with basic examples to understand opening and writing to files in the C programming language.
The goal of this video is to provide viewers with basic examples to understand and use switch statements in the C programming language.

706 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now