static int read_phdr(struct elf32_info *info, FILE *in)
{
int i;
if (info->file_ehdr.e_phnum > MAX_PHDRS) {
printc_err("elf32: too many program headers: %d\n",
info->file_ehdr.e_phnum);
return -1;
}
for (i = 0; i < info->file_ehdr.e_phnum; i++) {
if (fseek(in, i * info->file_ehdr.e_phentsize +
info->file_ehdr.e_phoff,
SEEK_SET) < 0) {
printc_err("elf32: can't seek to phdr %d\n", i);
return -1;
}
if (parse_phdr(&info->file_phdrs[i], in) < 0) {
printc_err("elf32: can't read phdr %d: %s\n",
i, last_error());
return -1;
}
}
return 0;
}
void decrypt_and_dump_self(char *selfFile, char *saveFile) {
int fd = open(selfFile, O_RDONLY, 0);
if (fd != -1) {
void *addr = mmap(0, 0x4000, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
if (addr != MAP_FAILED) {
printfsocket("mmap %s : %p\n", selfFile, addr);
uint16_t snum = *(uint16_t*)((uint8_t*)addr + 0x18);
Elf64_Ehdr *ehdr = (Elf64_Ehdr *)((uint8_t*)addr + 0x20 + snum * 0x20);
printfsocket("ehdr : %p\n", ehdr);
// shdr fix
ehdr->e_shoff = ehdr->e_shentsize = ehdr->e_shnum = ehdr->e_shstrndx = 0;
Elf64_Phdr *phdrs = (Elf64_Phdr *)((uint8_t *)ehdr + 0x40);
printfsocket("phdrs : %p\n", phdrs);
int segBufNum = 0;
SegmentBufInfo *segBufs = parse_phdr(phdrs, ehdr->e_phnum, &segBufNum);
do_dump(saveFile, fd, segBufs, segBufNum, ehdr);
printfsocket("dump completed\n");
free(segBufs);
munmap(addr, 0x4000);
}
else {
printfsocket("mmap file %s err : %s\n", selfFile, strerror(errno));
}
close(fd);
}
else {
printfsocket("open %s err : %s\n", selfFile, strerror(errno));
}
}
