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Mutation.c
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Mutation.c
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#include <stdio.h>
#include <Windows.h>
#include "Unicorn2.h"
UINT8 BackupBuf[x86MaxInsLen] = { 0x0 };
void MuNxtPayload()
{
while(1)
{
printf("Finding Liveable Mutation Position...\n");
MuPos = Get_Hardware_Rand() % (NextPayloadSize - 5 - x86MaxInsLen) + 4; // Keep first 4 bytes and last 1 byte
for(int i=0; i<x86MaxInsLen; i++)
{
BackupBuf[i] = nextPayloadBuf[MuPos + i];
nextPayloadBuf[MuPos + i] = Get_Hardware_Rand() & 0xFF;
}
__try
{
((void(*)())(nextPayloadBuf + 1))();
printf("Mutation Success @ 0x%X\n", MuPos);
break;
}
__except(TRUE)
{
// printf("Mutation Failed @ 0x%X, revert x86 code\n", MuPos);
MuWatchDog = time(NULL);
for(int i=0; i<x86MaxInsLen; i++)
{
nextPayloadBuf[MuPos + i] = BackupBuf[i];
}
}
}
}