reAssembleExe_SKipTest.cpp

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void)
{
    int tohack = 9;
    if (tohack == 9)
    {
        printf("you got to jump uppon me.\n");
        return 0;
    }
    printf("you got it!\n");
    return 0;
}
//gcc -W -Wall -o testHackJump01.exe testHackJump01.C

//skip the test tohack is equal to 9

//On Windows
//Disassemble with ollydbg
//Search for string
//Locate JNZ change it to JZ
//Assemble & Save

//On linux
//objdump -d /path/to/exe
//Loacte JNZ (disass in gdb is clearer to identify where to mod)
//83 7c 24 1c 09
//0x08048422 <+22>: turn jne to je  75 13
//c7 04 24 e0 84 04 08
//vi /path/to/exe
//escape+:  % !xxd
///75 13
//shift+r
//replace 75 with 74
//escape+:  % !xxd -r
//escape+:  wq!