Add Makefile test target and fix string encoding

- Add 'make test' target to verify rasm2 output matches original shellcodes
- Fix ARM shellcode to use .ascii instead of .string (no null terminator)
- All 6 shellcodes now produce byte-exact output
- Tests run automatically and report pass/fail for each shellcode

Author: vicky-dx

libr/egg/p/sc/Makefile

@@ -20,4 +20,55 @@ clean:
 	rm -rf out
 	rm -f *.c
 
-.PHONY: all clean
+# Test target: verify rasm2 output matches original shellcodes
+test: test-shellcodes
+
+test-shellcodes:
+	@echo "Testing shellcode assembly..."
+	@fail=0; \
+	for rasm in asm/*.rasm; do \
+		base=$$(basename $$rasm .rasm); \
+		src_file="src/$$base.c"; \
+		if [ -f "$$src_file" ]; then \
+			expected=$$(awk '/^#if 0/,/^#endif/{next} /\\x/{gsub(/^\/\*.*\*\/ /, ""); print}' "$$src_file" | grep -o '"\\x[^"]*"' | sed 's/"//g; s/\\x//g' | tr -d '\n'); \
+			case "$$base" in \
+				x86-linux-binsh) \
+					actual=$$(rasm2 -a x86 -b 32 -f "$$rasm" 2>/dev/null); \
+					;; \
+				x86_64-linux-binsh) \
+					actual=$$(rasm2 -a x86 -b 64 -f "$$rasm" 2>/dev/null); \
+					;; \
+				x86-osx-binsh|x86-osx-suidbinsh) \
+					actual=$$(rasm2 -a x86 -b 64 -f "$$rasm" 2>/dev/null); \
+					;; \
+				arm-linux-binsh) \
+					actual=$$(rasm2 -a arm -b 32 -f "$$rasm" 2>/dev/null); \
+					;; \
+				thumb-linux-binsh) \
+					actual=$$(rasm2 -a arm -f "$$rasm" 2>/dev/null); \
+					;; \
+				*) \
+					echo "  ⚠️  $$base: Unknown architecture, skipping"; \
+					continue; \
+					;; \
+			esac; \
+			if [ "$$actual" = "$$expected" ]; then \
+				echo "  ✓  $$base: PASS ($$actual)"; \
+			else \
+				echo "  ✗  $$base: FAIL"; \
+				echo "     Expected: $$expected"; \
+				echo "     Got:      $$actual"; \
+				fail=$$((fail + 1)); \
+			fi; \
+		else \
+			echo "  ⚠️  $$base: No source file found, skipping"; \
+		fi; \
+	done; \
+	if [ $$fail -eq 0 ]; then \
+		echo "All tests passed! ✓"; \
+	else \
+		echo "$$fail test(s) failed ✗"; \
+		exit 1; \
+	fi
+
+.PHONY: all clean test test-shellcodes

libr/egg/p/sc/asm/arm-linux-binsh.rasm

@@ -16,4 +16,4 @@ add r3, pc, 4               ; r3 = address of argv on stack
 add r1, sp, 4               ; r1 = argv pointer
 strb r2, [r3, 1]            ; another NULL byte
 svc 0x900b0b                ; syscall execve (syscall 0xb)
-.string "/bin/sh"
+.ascii "/bin/sh"