added rop_cleaner

will help find gadgets that does not contains bad chars

helpers/rop_cleaner.py

@@ -0,0 +1,31 @@
+import struct, re
+
+f = open("rop.txt", "r")
+content = f.read()
+f.close()
+bchars=["00","0a","0d","83","85","87","88","89","8a","8b","8c","8e","91","95","96","97","9b","9f","b7","bb","bc","bf","c0","c1","c3","c4","c7","c8","c9","ca","cc","cd","ce","cf","d0","d1","d2","d3","d4","d5","d6","d7","d8","d9","da","db","dc","dd","de","df","e0","e1","e3","e4","e5","e6","e7","e8","e9","ea","eb","ec","ed","ee","ef","f0","f1","f2","f3","f4","f5","f6","f7","f8","f9","fa","fb","fc","fd","fe","ff"]
+
+matches = re.findall(r"0x[0-9a-f]{8} :", content)
+
+m_final = []
+for match in matches:
+    m_clean = match.replace(":","").rstrip()
+    m_final.append(m_clean)
+
+good_addr = []
+for addr in m_final:
+    flag=True
+    for bad in bchars:
+        for index in range(0, len(addr), 2):
+            if str(bad) in str(addr[index : index + 2]):
+                flag=False
+                break
+    if flag == True:
+        good_addr.append(addr)
+
+clean = open("rop_clean.txt", "w")
+rop = open("rop.txt", "r")
+for line in rop:
+    for item in good_addr:
+        if str(item) in str(line):
+            clean.write(line)