Improve README & fix small bug.

README.md

@@ -10,6 +10,32 @@
 <img src='pics/rp.gif'>
 </p>
 
+## Finding ROP gadgets
+
+To find ROP gadget you need to specify a file with the `--file` / `-f` option and use the `--rop` / `-r` option specifying the maximum the number of instructions in the gadget:
+
+<p align='center'>
+<img src='pics/rp-r.gif'>
+</p>
+
+You can customize the base address of the module with the `--va` option (if you pass a base of `0`, then you get relative offsets) and you can also use the `--raw` option to analyze raw code dumps.
+
+## Finding pointers
+
+Oftentimes when building ROP chains, you might need to find pointers to integers with specific values. To look for those, you can use the `--search-int` option like in the below:
+
+<p align='center'>
+<img src='pics/rp-sint.gif'>
+</p>
+
+Other times, you might need to find pointers to specific strings. To look for those, you can use the `--search-hexa` option like in the below:
+
+<p align='center'>
+<img src='pics/rp-shexa.gif'>
+</p>
+
+You can also use the `--va` option to specify your own base address.
+
 ## Build
 
 You can find shell scripts in [src/build](src/build) for every supported platforms; below is the Linux example:

src/rp/coloshell.hpp

@@ -287,7 +287,7 @@ template <class T> static void coloshell(const T t, const Colors colo) {
     enable_color(COLO_GREEN);                                                  \
     for (uint32_t i = 0; i < size; ++i) {                                      \
       if (isprint(hex_val[i])) {                                               \
-        fmt::print("{}", hex_val[i]);                                          \
+        fmt::print("{:c}", hex_val[i]);                                        \
       } else {                                                                 \
         fmt::print("\\x{:02x}", hex_val[i]);                                   \
       }                                                                        \