Improved FRIDA mode scripting support (#994)

Co-authored-by: Your Name <you@example.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/frida_mode/hook/hook.c b/frida_mode/hook/hook.c
new file mode 100644
index 00000000..7d08101f
--- /dev/null
+++ b/frida_mode/hook/hook.c
@@ -0,0 +1,50 @@
+#include <stdint.h>
+#include <string.h>
+
+#include "frida-gumjs.h"
+
+#if defined(__x86_64__)
+
+void afl_persistent_hook(GumCpuContext *regs, uint8_t *input_buf,
+                         uint32_t input_buf_len) {
+
+  memcpy((void *)regs->rdi, input_buf, input_buf_len);
+  regs->rsi = input_buf_len;
+
+}
+
+#elif defined(__i386__)
+
+void afl_persistent_hook(GumCpuContext *regs, uint8_t *input_buf,
+                         uint32_t input_buf_len) {
+
+  void **esp = (void **)regs->esp;
+  void * arg1 = esp[0];
+  void **arg2 = &esp[1];
+  memcpy(arg1, input_buf, input_buf_len);
+  *arg2 = (void *)input_buf_len;
+
+}
+
+#elif defined(__aarch64__)
+
+void afl_persistent_hook(GumCpuContext *regs, uint8_t *input_buf,
+                         uint32_t input_buf_len) {
+
+  memcpy((void *)regs->x[0], input_buf, input_buf_len);
+  regs->x[1] = input_buf_len;
+
+}
+
+#else
+  #pragma error "Unsupported architecture"
+#endif
+
+int afl_persistent_hook_init(void) {
+
+  // 1 for shared memory input (faster), 0 for normal input (you have to use
+  // read(), input_buf will be NULL)
+  return 1;
+
+}
+