SSL Hack

SSL Hack (openssl)

ALL:
	gcc -fPIC -shared -o sslhack.so sslhack.c -lc -ldl

makefile

ALL:
	gcc -fPIC -shared -o sslhack.so sslhack.c -lc -ldl

sslhack.c

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <dlfcn.h>

#include <openssl/ssl.h>
#include <stdio.h>



#define LIBC_NAME	"libssl.so.1.0.0" 

 int SSL_read(SSL *ssl, void *buf, int num){


	void	*libc;
	libc = dlopen(LIBC_NAME, RTLD_LAZY);
	if(!libc){
	printf("Unable to open the lib \n");
	return -1;}
	int	(*bind_ptr)(void * , void *, int);

	*(void **) (&bind_ptr) = dlsym(libc, "SSL_read");
	if(!bind_ptr){
	return -1;}
	
	int	ret = (int)(*bind_ptr)(ssl, 
					buf, 
					num);
	if(ret>0){
		printf("RECV : %d bytes %.*s \n" ,ret, ret ,(char*)buf);
	}
	return ret;
}

 int SSL_write(SSL *ssl, const void *buf, int num){

	void	*libc;
	libc = dlopen(LIBC_NAME, RTLD_LAZY);
	if(!libc){
	printf("Unable to open the lib \n");
	return -1;}
	int	(*bind_ptr)(void * , void *, int);

	*(void **) (&bind_ptr) = dlsym(libc, "SSL_write");
	if(!bind_ptr){
	return -1;}
	
	int	ret = (int)(*bind_ptr)(ssl, 
					buf, 
					num);
	if(ret>0){
		printf("SEND  : %d bytes ,  %.*s \n" , ret, ret, (char*)buf);
	}
	return ret;
}