load ELF file into memory

Question

I\'m trying to put an elf file into memory and then execute it, these are the steps:

1- file to put into memory

int main()
{
   printf(\"Hello world! \\n         


        

Answer 1

I'm trying to put an elf file into memory and then execute it,

For a fully-statically-linked executable, your steps would work (except you need to jump to _start == entry point 0x8120, not main).

Then I have copied all the elf bytes into the allocations

Another possible problem is not paying attention to the .p_offset. Your memcpyies should look something like this:

unsigned char buf1[0x16828];  // read 0x16828 bytes from start of file
memcpy(0x8000, buf1, 0x16828);

unsigned char buf2[0x250];  // read 0x250 bytes from offset 0x016840 into the file
memcpy(0x0001f840, buf2, 0x250);