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shellsilo.py
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2686 lines (2490 loc) · 109 KB
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#!/usr/bin/python3
import re
import string
import random
import json
import sys
from constants import dataTypes, dataTypes_x86, specialVars, type_map
from keystone import *
import readline
import csv
import platform
from rich.console import Console
from rich.table import Table
from rich.panel import Panel
from rich import box
from rich.progress import Progress, BarColumn, TimeRemainingColumn
from rich.panel import Panel
import time
import threading
import subprocess
import os
console = Console()
rst="\033[0;0m"
red = "\033[38;5;9m"
by="\033[38;5;3m"
y = "\033[1;33m"
b="\033[38;5;27m"
p="\033[1;33;35m"
c="\033[38;5;6m"
w="\033[38;5;7m"
o="\033[38;5;202m"
lb="\033[38;5;117m"
g="\033[38;5;2m"
checkMark = u'\u2705'
crossMark = u'\u2715'
pure_red = "\033[0;31m"
dgr = "\033[0;32m"
orange = "\033[0;33m"
dark_blue = "\033[0;34m"
bright_purple = "\033[0;35m"
dark_cyan = "\033[0;36m"
dulw = "\033[0;37m"
publk = "\033[0;30m"
bright_red = "\033[0;91m"
light_green = "\033[0;92m"
yellow = "\033[0;93m"
yellow = "\033[1;33m"
bright_blue = "\033[0;94m"
magenta = "\033[0;95m"
light_cyan = "\033[0;96m"
brblk = "\033[0;90m"
bright_white = "\033[0;97m"
cyan_back = "\033[0;46m"
purple_back = "\033[0;45m"
white_back = "\033[0;47m"
blue_back = "\033[0;44m"
orange_back = "\033[0;43m"
green_back = "\033[0;42m"
pink_back = "\033[0;41m"
grey_back = "\033[0;40m"
grey = '\033[38;4;236m'
bold = "\033[1m"
underline = "\033[4m"
italic = "\033[3m"
darken = "\033[2m"
invisible = '\033[08m'
reverse_colour = '\033[07m'
grey = "\x1b[90m"
structs = []
hiddenstructs = []
mainVars = []
ebpVars = []
mainStructs = []
finalAssembly = []
allLoops = [None]
loopDetected = [False]
breakDetected = [False]
ifDetected = [False]
breakData = [None]
win10Checked = True
win11Checked = False
x64 = False
nasm = True
masm = False
dataSection = False
generateBinaryFile = False
funcCalls = {}
syscallsAndApiNum = {}
assemblyAndComments = []
def run_with_progress(operationType=None, taskArg=None):
result = []
exception = []
try:
with Progress(
"[progress.description]{task.description}",
BarColumn(),
"[progress.percentage]{task.percentage:>3.0f}%",
TimeRemainingColumn()
) as progress:
task = progress.add_task("Processing", total=100)
def readFileWithProgress():
try:
res = taskArg.readFile()
if res:
result.append("Operation successful")
else:
exception.append("Operation failed")
except Exception as e:
exception.append(e)
raise
def run_command(command):
try:
cmdResult = subprocess.run(
command,
check=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
text=True
)
result.append("Operation successful")
#if cmdResult.stdout:
#print("Output:", cmdResult.stdout)
except subprocess.CalledProcessError as e:
print(f"failed!")
print("Error:", e.stderr)
exception.append("Operation failed")
raise
if operationType and operationType == "readfile":
thread = threading.Thread(target=readFileWithProgress)
thread.start()
elif operationType and operationType == "run":
thread = threading.Thread(target=run_command(taskArg))
thread.start()
while thread.is_alive():
progress.update(task, advance=1)
time.sleep(0.05)
if progress.tasks[0].percentage > 95:
progress.update(task, advance=0.1)
thread.join()
progress.update(task, completed=100) # Force 100% at end
# Result display
if exception:
console.print(f"[red]✗ Error: {exception[0]}[/red]")
return False
else:
console.print(f"[green]✓ {result[0]}[/green]")
return True
except Exception as e:
raise
class ContextCompleter:
def __init__(self):
self.commands = ['generate', 'load', 'help', 'exit', 'quit', 'set', 'enable']
self.command_args = {
'generate': ['assembly', 'shellcode', 'binary'],
'enable':['data'],
'set':['arch', 'assembler'],
'arch':['x64', 'x86'],
'assembler':['nasm', 'masm']
}
def complete(self, text, state):
line_org = readline.get_line_buffer()
tokens = re.split(r'(\s+)', line_org)
line = [token for token in tokens if token]
#line = readline.get_line_buffer().split()
#print("Length: ", len(line), line, "text: ", text)
if len(line) == 0:
possible_commands = [cmd for cmd in self.commands if cmd.startswith(text)]
if state < len(possible_commands):
return possible_commands[state]
if len(line) == 1:
options = [cmd for cmd in self.commands if cmd.startswith(text)]
if state < len(options):
return options[state]
if len(line) > 1:
if line[-1] == " ":
command = line[-2]
options = [arg for arg in self.command_args[command] if arg.startswith(text)]
if state < len(options):
return options[state]
else:
command = line[-1]
if command in self.command_args:
options = [arg for arg in self.command_args[command] if arg.startswith(text)]
if state < len(options):
return options[state]
else:
line = line[:-2]
command = line[-1]
options = [arg for arg in self.command_args[command] if arg.startswith(text)]
if state < len(options):
return options[state]
return None
class Structs:
def __init__(self):
self.Lines = []
self.Name = ''
self.Pointer = ''
self.totalSize = 0
self.Members = []
class Vars:
def __init__(self):
self.Name = ''
self.Type = ''
self.Value = ''
self.instance = ''
self.unicode = ''
self.assignedTo = ''
self.assigned = False
self.Size = 0
self.Length = 0
class Asm:
def __init__(self):
self.stackStart = 0x4
self.stackSize = 0x2000
self.assembly = ""
self.masm = ""
self.nasm = ""
self.dotData = ""
self.shellcode = ""
self.registers = {
"RAX":None,
"RBX":None,
"RCX":None,
"RDX":None,
"RSI":None,
"RDI":None,
"RBP":None,
"RSP":None,
"R8":None,
"R9":None,
"R10":None,
"R11":None,
"R12":None,
"R13":None,
"R14":None,
"R15":None
}
class whileLoop:
def __init__(self):
self.loopStart = None
self.loopEnd = None
class Reader:
def __init__(self, file):
self.file = file
asmObj = Asm()
def addUnicodeStr(self, ptrName, structName, structVal):
unicodeVal = structVal["u"]
return self.pushAscii(unicodeVal)
def assemblerDataSection(self):
asm = "global _start\n"
asm += "section .text\n"
asm += "_start:\n"
if nasm:
ds = "section .data\n"
elif masm:
ds = ".data\n"
ds += self.asmObj.dotData
ds += asm
return ds
def testShellcode(self, assembly):
assembly_lines = assembly.strip().split('\n')
for i, line in enumerate(assembly_lines):
try:
if x64:
ks = Ks(KS_ARCH_X86, KS_MODE_64)
else:
ks = Ks(KS_ARCH_X86, KS_MODE_32)
encoding, count = ks.asm(line)
if not encoding:
print(f"Didn't like this instruction: {y}{line}{rst}")
except Exception as e:
print(f"Error on line {i + 1}: {line}")
print(f"Error message: {e}")
def asm2Shellcode(self, assembly):
#self.testShellcode(assembly)
allText = ""
allText += f"\t\t {y}**********************\n"
allText += f"\t\t *****{o} Shellcode{y} ******\n"
allText += f"\t\t {y}**********************{rst}\n\n"
if x64:
ks = Ks(KS_ARCH_X86, KS_MODE_64)
else:
ks = Ks(KS_ARCH_X86, KS_MODE_32)
try:
if not dataSection:
encoding, _ = ks.asm(assembly)
opcode_hex = "".join(f"\\x{byte:02x}" for byte in encoding)
bytes_per_line = 16
allText += '\n'.join(opcode_hex[i:i + bytes_per_line * 4] for i in range(0, len(opcode_hex), bytes_per_line * 4))
allText += '\n'
except KsError as e:
print(f"[!] Shellcode generation failed")
except Exception as e:
print(f"[!] Shellcode generation failed")
return allText
def findEbpVar(self, value):
for ebp in ebpVars:
if value in ebp:
return ebp
return False
def sizeOf(self, data):
found = re.search(r'sizeof\(("?[^"]+"?)\)', data)
if found:
extracted = found.group(1)
foundVal = self.getValueType(extracted)
if foundVal == "int":
return hex(4)
elif foundVal == "string":
return hex(len(extracted.replace('"', '')))
elif foundVal == "variable" and extracted == "int":
return hex(4)
elif foundVal == "variable" and extracted == "char":
return hex(1)
elif foundVal == "variable" and (extracted != "int" or extracted != "char"):
varVal = self.getVarValue(extracted)
if varVal:
if "\\x" in varVal:
try:
varVal = varVal.replace("\\x", "").replace('"', '')
raw_bytes = bytes.fromhex(varVal)
return hex(len(raw_bytes))
except Exception as e:
print(e)
return hex(len(varVal.replace('"', '')))
else:
print(f"{red}Error: variable {extracted} doesn't exist.{rst}")
print(f"{w}Error on: {data}{rst}")
sys.exit()
else: return None
def rawBytesFormat(self, bytes_list, label=None, bytes_per_line=10):
try:
if not bytes_list:
return ""
hex_parts = []
for b in bytes_list:
hex_parts.append(f"0{b:02x}h") # MASM: 0AAh
chunks = [hex_parts[i:i+bytes_per_line]
for i in range(0, len(hex_parts), bytes_per_line)]
asm_lines = []
for i, chunk in enumerate(chunks):
if i == 0:
asm_lines.append(f"{label} db {', '.join(chunk)}")
else:
asm_lines.append(f" db {', '.join(chunk)}")
if len(bytes_list) > 20:
asm_lines.insert(0, f"; {len(bytes_list)} bytes")
asm = "\n".join(asm_lines)
return asm
except Exception as e:
raise
return None
def newVarAssm(self, Type, name, value, size):
varEbpDict = self.findEbpVar(name)
varEbpVal = None
assignedEbpVal = None
if varEbpDict:
varEbpVal = varEbpDict[name]
else:
if Type == "newVarAdd" or Type == "newVarSub":
print(f"{red}Error: could not find var {name}, did you forget to define it ?{rst}")
sys.exit()
currentStack = self.asmObj.stackStart
allTypes = dataTypes if x64 else dataTypes_x86
resVal = self.getValueType(value)
asm = ""
string = None
rawbytes = None
bytes_list = []
if resVal == "int":
value = hex(int(value))
elif resVal == "hex":
value = hex(int(value, 16))
elif resVal == "string":
pushedStr = self.pushString(value)
string = pushedStr
asm += pushedStr
elif resVal == "sizeof":
value = self.sizeOf(value)
elif resVal == "raw":
try:
rawbytes = True
hex_bytes = re.findall(r'\\x([0-9a-fA-F]{2})', value)
for seq in hex_bytes:
bytes_list.append(int(seq, 16))
dotDataBytes = self.rawBytesFormat(bytes_list, name, 10)
self.asmObj.dotData = f"{dotDataBytes}\n"
except Exception as e:
raise
else:
rtnDict = self.findEbpVar(value)
if rtnDict:
assignedEbpVal = rtnDict[value]
if value in specialVars:
value = specialVars[value]
for var in mainVars:
if name == var.Name:
size = var.Size
dType = type_map.get(hex(int(size)))
#if size == 4:
# dType = "dword"
#elif size == 2:
# dType = "word"
#elif size == 1:
# dType == "byte"
#else:
# print(f"Not found: {size}{var.Name}")
if x64:
size = 8
dType = "qword"
if string:
if x64:
dType = "qword"
assmLine = f" mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], rbx"
else:
assmLine = f" mov {y+dType+rst} ptr[ebp-{hex(currentStack)}], ebx"
asm += "{:60s};{}={}".format(assmLine,lb+name,value+rst)
elif rawbytes:
if x64:
dType = "qword"
if masm:
if dataSection:
assmLine = f" lea rax, {name}\n"
assmLine += f" mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], rax"
else:
assmLine = f";;; lea rax, {name}\n"
assmLine += f";;; mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], rax"
elif nasm:
if dataSection:
assmLine = f" lea rax, [rel {name}]\n"
assmLine += f" mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], rax"
else:
assmLine = f";;; lea rax, [rel {name}]\n"
assmLine += f";;; mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], rax"
else:
print("[!] Error: Assembler not set")
sys.exit()
else:
if dataSection:
assmLine = f" lea eax, {name}\n"
assmLine += f" mov {y+dType+rst} ptr[ebp-{hex(currentStack)}], eax"
else:
assmLine = f";;; lea eax, {name}\n"
assmLine += f";;; mov {y+dType+rst} ptr[ebp-{hex(currentStack)}], eax"
asm += "{:87s};{}".format(assmLine,lb+name+rst)
else:
if Type == "newVarAdd" and varEbpVal:
if assignedEbpVal:
if x64:
dType = "qword"
assmLine = f" mov rbx, qword ptr[{assignedEbpVal}]"
asm += "{:47s};{}\n".format(assmLine,lb+name+rst)
assmLine = f" add {y+dType+rst} ptr[{varEbpVal}], rbx"
else:
assmLine = f" mov ebx, dword ptr[{assignedEbpVal}]"
asm += "{:47s};{}\n".format(assmLine,lb+name+rst)
assmLine = f" add {y+dType+rst} ptr[{varEbpVal}], ebx"
asm += "{:60s}".format(assmLine)
else:
assmLine = f" add {y+dType+rst} ptr[{varEbpVal}], {value}"
asm += "{:60s};{}".format(assmLine,lb+name+rst)
elif Type == "newVarSub" and varEbpVal:
if assignedEbpVal:
if x64:
dType = "qword"
assmLine = f" mov rbx, qword ptr[{assignedEbpVal}]"
asm += "{:47s};{}\n".format(assmLine, lb+name+rst)
assmLine = f" sub {y+dType+rst} ptr[{varEbpVal}], rbx"
else:
assmLine = f" mov ebx, dword ptr[{assignedEbpVal}]"
asm += "{:47s};{}\n".format(assmLine, lb+name+rst)
assmLine = f" sub {y+dType+rst} ptr[{varEbpVal}], ebx"
asm += "{:60s}".format(assmLine)
else:
assmLine = f" sub {y+dType+rst} ptr[{varEbpVal}], {value}"
asm += "{:60s};{}".format(assmLine,lb+name+rst)
else:
if varEbpVal: # if the assigned var (left side) exists already
if assignedEbpVal: # if the right side is a variable
if x64:
dType = "qword"
assmLine = f" mov rbx, qword ptr[{assignedEbpVal}]"
asm += "{:60s}\n".format(assmLine)
assmLine = f" mov {y+dType+rst} ptr[{varEbpVal}], rbx"
else:
assmLine = f" mov ebx, dword ptr[{assignedEbpVal}]"
asm += "{:60s}\n".format(assmLine)
assmLine = f" mov {y+dType+rst} ptr[{varEbpVal}], ebx"
asm += "{:60s};{}\n".format(assmLine,lb+name+rst)
else:
assmLine = f" mov {y+dType+rst} ptr[{varEbpVal}], {value}"
asm += "{:60s};{}".format(assmLine,lb+name+rst)
else:
if x64:
## assigning a value to a variable
assmLine = f" mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], {value}"
else:
assmLine = f" mov {y+dType+rst} ptr[ebp-{hex(currentStack)}], {value}"
asm += "{:60s};{}".format(assmLine,lb+name+rst)
if varEbpVal:
assignedEbp = f"{varEbpVal}"
else:
if x64:
assignedEbp = f"rbp-{hex(currentStack)}"
else:
assignedEbp = f"ebp-{hex(currentStack)}"
self.asmObj.stackStart += size
ebpDict = {var.Name:assignedEbp,
"value":value,
"type":dType}
ebpVars.append(ebpDict)
return(asm)
def invokeSysCall(self):
asm = ""
if x64:
asm += f" mov r10, rcx\n"
asm += f" mov rax, rdi ; assume syscall number in rdi\n"
asm += f" call {lb}invokeSysCall{rst}\n"
else:
asm += f" mov eax, ecx ; assume syscall number in ecx\n"
asm += f" call {lb}invokeSysCall{rst}\n"
return asm
def getApiNumFromFile(self, funcName):
asm = ""
apiNumFromFile = readSysCalls(funcName, False, True)
if x64:
asm += f" mov rdi, {apiNumFromFile}\n"
else:
asm += f" mov edi, {apiNumFromFile}\n"
asm += f" call {lb}GetSysModelNumber{rst}\n"
return asm
def x64ParamAsm(self, idx, param):
asm = ""
## Assigning values to rcx, rdx, r8, r9
try:
param = str(param)
x64Mov = param.replace("dword", "qword")
if idx == 0:
asm += f" mov rcx, {x64Mov}"
elif idx == 1:
asm += f" mov rdx, {x64Mov}"
elif idx == 2:
asm += f" mov r8, {x64Mov}"
elif idx == 3:
asm += f" mov r9, {x64Mov}"
else:
asm += f" push {x64Mov}"
except Exception as e:
raise
return asm
def funcCallAssmHandler(self, stackAdjust, asm, funcName, assignedTo):
try:
apiNum = readSysCalls(funcName, False, True)
if apiNum:
syscallsAndApiNum.update({funcName:apiNum})
else:
print(f"Error: couldn't find api num from syscalls file")
asm += self.getApiNumFromFile(funcName)
asm += self.invokeSysCall()
if assignedTo:
for var in mainVars:
if var.Name == assignedTo:
if var.Value:
for ebp in ebpVars:
if var.Name in ebp:
ebpVal = ebp[var.Name]
if x64:
prepAsm = f" mov {lb}qword{rst} ptr[{ebpVal}], rax"
else:
prepAsm = f" mov {lb}dword{rst} ptr[{ebpVal}], eax"
asm += "{:64s};{} {}\n".format(prepAsm,lb+"save return value in",o+var.Name+rst)
else:
currentStack = self.asmObj.stackStart
if x64:
prepAsm = f" mov {y}qword{rst} ptr[rbp-{hex(currentStack)}], rax"
else:
prepAsm = f" mov {y}dword{rst} ptr[ebp-{hex(currentStack)}], eax"
asm += "{:64s};{} {}\n".format(prepAsm,lb+"save return value in",o+var.Name+rst)
if x64:
assignedEbp = f"rbp-{hex(currentStack)}"
var.Value = "RAX"
ebpDict = {var.Name:assignedEbp,
"value":"RAX",
"type":"dword"}
else:
assignedEbp = f"ebp-{hex(currentStack)}"
var.Value = "EAX"
ebpDict = {var.Name:assignedEbp,
"value":"EAX",
"type":"dword"}
if x64:
self.asmObj.stackStart += 0x8
else:
self.asmObj.stackStart += 0x4
if x64:
asm += f" add rsp, {hex(stackAdjust+32)}\n"
else:
asm += f" add esp, {hex(stackAdjust)}\n"
except Exception as e:
raise
return(asm)
def get_parameter_order(self, params):
if x64:
register_params = params[:4]
stack_params = params[4:][::-1] # Reverse only params 5+
return register_params + stack_params
else:
# x86 (32-bit): ALL params are pushed in reverse order
return params
def funcCallAssmX86(self, params, funcName, assignedTo):
params = self.get_parameter_order(params)
asm = ""
eaxAssm = ""
stackAdjust = 0
numberOfParams = len(params)
RCX = None
RDX = None
R8 = None
R9 = None
try:
for func in mainVars:
if func.Name == funcName:
for idx, param in enumerate(params if x64 else reversed(params)):
stackAdjust += 4
if param[0] != "&":
paramType = self.getValueType(param)
if paramType == "variable":
ebp = self.findEbpVar(param)
if ebp:
ebpOff = ebp[param]
ebpVal = ebp["value"]
if len(ebpVal) > 10 and "\\x" in ebpVal:
raw_bytes = ebpVal.encode('latin-1') if isinstance(ebpVal, str) else ebpVal
trim_bytes = raw_bytes[:10]
hex_str = ''.join([f'\\x{byte:02x}' for byte in trim_bytes])
hex_str += "# ...truncated"
ebpVal = hex_str
ebpType = ebp["type"]
reg = f"{y+ebpType+rst} ptr[{ebpOff}]"
if x64:
prepAsm = self.x64ParamAsm(idx, reg)
else:
prepAsm = f" push {y+ebpType+rst} ptr[{ebpOff}]"
#asm += "{:60s};{}:{}\n".format(prepAsm,lb+param,o+ebpVal+rst)
asm += "{:60s};{}:{}\n".format(prepAsm,lb+param,o+ebpVal+rst)
else:
if param in specialVars:
newParam = specialVars[param]
reg = f"{newParam}"
if x64:
prepAsm = self.x64ParamAsm(idx, newParam)
else:
prepAsm = f" push {newParam}"
asm += "{:47s};{}\n".format(prepAsm,lb+param+rst)
else:
newParam = self.reservedType(param)
if newParam != param:
newParam = hex(newParam)
if x64:
prepAsm = self.x64ParamAsm(idx,newParam)
else:
prepAsm = f" push {newParam}"
asm += "{:47s};{}\n".format(prepAsm,lb+param+rst)
else:
print(f"{red}Error: parameter {param} did not match any variable{rst}")
sys.exit()
elif paramType == "string":
isString = re.findall('"(.*)"', param)
if isString:
pushStr = isString[0]
strAsm = self.pushString(pushStr)
asm += strAsm
elif paramType == "int":
paramVal = hex(int(param))
if x64:
prepAsm = self.x64ParamAsm(idx, paramVal)
else:
prepAsm = f" push {paramVal}"
asm += "{:47s};{}\n".format(prepAsm,lb+param+rst)
elif paramType == "hex":
v = hex(int(param, 16))
if x64:
prepAsm = self.x64ParamAsm(idx, v)
else:
prepAsm = f" push {v}"
asm += "{:44s};{}\n".format(prepAsm,lb+param+rst)
elif paramType == "sizeof":
foundSizeOf, rtnVal = self.isSizeOf(param)
if foundSizeOf:
if self.isStruct(rtnVal):
paramVal = self.getStructSize(rtnVal)
if x64:
prepAsm = self.x64ParamAsm(idx, paramVal)
else:
prepAsm = f" push {paramVal}"
asm += "{:47s};{}\n".format(prepAsm,lb+param+rst)
else:
paramVal = self.sizeOf(param)
if x64:
prepAsm = self.x64ParamAsm(idx, paramVal)
else:
prepAsm = f" push {paramVal}"
asm += "{:47s};{}\n".format(prepAsm,lb+param+rst)
else:
if param in specialVars:
paramVal = specialVars[param]
if x64:
prepAsm = self.x64ParamAsm(idx, paramVal)
else:
prepAsm = f" push {paramVal}"
asm += "{:44s};{}\n".format(prepAsm,lb+param+rst)
else:
newParam = param.replace("&", "")
ebp = self.findEbpVar(newParam)
if ebp:
ebpOff = ebp[newParam]
ebpVal = ebp["value"]
ebpType = ebp["type"]
if x64:
prepAsm = f" lea rbx, {y+'qword'+rst} ptr[{ebpOff}]"
else:
prepAsm = f" lea ebx, {y+'dword'+rst} ptr[{ebpOff}]"
asm += "{:60s};{}:{}\n".format(prepAsm,lb+param,o+ebpVal+rst)
if x64:
prepAsm = self.x64ParamAsm(idx, "rbx")
asm += "{:60s}\n".format(prepAsm)
else:
asm += f" push ebx\n"
break
except Exception as e:
raise
if x64:
asm += " sub rsp, 0x20\n"
return self.funcCallAssmHandler(stackAdjust, asm, funcName, assignedTo)
def funcCallAssm(self, funcName, params, assignedTo):
asm = ""
try:
if funcName not in funcCalls:
asm += f"\n{lb+funcName+rst}:\n"
funcCalls.update({funcName:0})
else:
funcCallNum = funcCalls[funcName]
NewfuncName = f"{funcName}{funcCallNum+1}"
funcCalls.update({NewfuncName:funcCallNum+1})
asm += f"\n{lb+NewfuncName+rst}:\n"
result = self.funcCallAssmX86(params, funcName, assignedTo)
asm += result
except Exception as e:
raise
return asm
def structPtrAsm(self,ptr):
currentStack = self.asmObj.stackStart
asm = ""
ptrOffset = 0
pointerName = ""
for s in structs:
if s.Pointer == ptr:
pointerName = s.Name
if x64:
ptrOffset = f"rbp-{hex(currentStack)}"
else:
ptrOffset = f"ebp-{hex(currentStack)}"
ebpDict = {s.Pointer:ptrOffset,
"value":"0x0",
"type":"struct",
"members":[]}
members = s.Members
for mem in members:
for key, value in mem.items():
dType = type_map.get(hex(int(key)) if "0x" not in key else key)
#if key == "0x4":
# dType = "dword"
#elif key == "0x2":
# dType = "word"
#elif key == "0x1":
# dType = "byte"
#elif key == "0x8":
# dType = "qword"
ebpDict["members"].append({value:hex(currentStack)})
if x64:
prepAsm = f" mov {y+dType+rst} ptr[rbp-{hex(currentStack)}], 0x0"
else:
prepAsm = f" mov {y+dType+rst} ptr[ebp-{hex(currentStack)}], 0x0"
asm += "{:60s};{}\n".format(prepAsm, lb+value+rst)
if x64:
ptrOffset = f"rbp-{hex(currentStack)}"
else:
ptrOffset = f"ebp-{hex(currentStack)}"
currentStack += int(key, 16)
ebpVars.append(ebpDict)
self.asmObj.stackStart = currentStack
return asm,ptrOffset,pointerName
def checkStructPtr(self, st):
members = st.Members
for mem in members:
for key, value in mem.items():
if "->" in value:
structPtr = value.split("->")[1]
return True,structPtr
return False,None
def genStructAssembly(self, members, var, offset=None, ptrName=None):
v = var
asm = ""
finalAsm = ""
if v.instance != "":
v.Name = v.instance
if x64:
currStackPtr = f"rbp-{hex(self.asmObj.stackStart)}"
else:
currStackPtr = f"ebp-{hex(self.asmObj.stackStart)}"
ebpDict = {v.Name:currStackPtr,
"value":"0x0",
"type":"struct",
"members":[]}
tmpStackPtr = 0
try:
for mem in members:
for key, value in mem.items():
possibleArr = re.search(r'\[(\d+)\]', value)
if possibleArr:
ArrSize = possibleArr.group(1)
key = hex(int(key, 16) * int(ArrSize))
currentStack = self.asmObj.stackStart
if key == "0x4":
dType = "dword"
elif key == "0x2":
dType = "word"
elif key == "0x1":
dType = "byte"
elif key == "0x8":
dType = "qword"
else:
print(f"[!] Unknwon type")
ebpDict["members"].append({value:hex(currentStack)})
if x64:
tmpStackPtr = f"rbp-{hex(currentStack)}"
else:
tmpStackPtr = f"ebp-{hex(currentStack)}"
if "->" in value:
isInitialized = v.Value.replace(" ", "")
if "0" in isInitialized or "{0}" in isInitialized:
if x64:
prepAsm = f" mov {y}dword{rst} ptr[rbp-{hex(self.asmObj.stackStart)}], 0x0"
else:
prepAsm = f" mov {y}dword{rst} ptr[ebp-{hex(self.asmObj.stackStart)}], 0x0"
asm += "{:60s};{}\n".format(prepAsm, lb+"ptr:"+ptrName+rst)
else:
if x64:
prepAsm = f" lea rbx, {y}qword{rst} ptr[{offset}]"
asm += "{:60s};{}\n".format(prepAsm, lb+"ptr:"+ptrName+rst)
prepAsm = f" mov {y}qword{rst} ptr[rbp-{hex(self.asmObj.stackStart)}], rbx"
else:
prepAsm = f" lea ebx, {y}dword{rst} ptr[{offset}]"
asm += "{:60s};{}\n".format(prepAsm, lb+"ptr:"+ptrName+rst)
prepAsm = f" mov {y}dword{rst} ptr[ebp-{hex(self.asmObj.stackStart)}], ebx"
#asm += "{:60s};{}\n".format(prepAsm, lb+"ptr:"+ptrName+rst)
asm += "{:60s}\n".format(prepAsm)
self.asmObj.stackStart += int(key, 16)
else:
if "0" in v.Value or "null" in v.Value.lower():
if x64:
prepAsm = f" mov {y+dType+rst} ptr[rbp-{hex(self.asmObj.stackStart)}], 0x0"
else:
prepAsm = f" mov {y+dType+rst} ptr[ebp-{hex(self.asmObj.stackStart)}], 0x0"
asm += "{:60s};{}\n".format(prepAsm, lb+value+rst)
self.asmObj.stackStart += int(key, 16)
elif v.Value == "":
if x64:
prepAsm = f" mov {y+dType+rst} ptr[rbp-{hex(self.asmObj.stackStart)}], 0x0"
else:
prepAsm = f" mov {y+dType+rst} ptr[ebp-{hex(self.asmObj.stackStart)}], 0x0"
asm += "{:60s};{}\n".format(prepAsm, lb+value+rst)
self.asmObj.stackStart += int(key, 16)
except Exception as e:
raise
ebpDict[v.Name] = tmpStackPtr
ebpVars.append(ebpDict)
finalAsm += asm
return finalAsm
def structAssm(self, name, value):
asm = ""
finalAsm = ""
structOffset = None
for var in mainVars:
if var.Name == name:
for m in structs:
if m.Name == name:
isPtrExist,ptrName = self.checkStructPtr(m)
if isPtrExist:
rtnAsm,structOffset,ptrName = self.structPtrAsm(ptrName)
finalAsm += rtnAsm
if structOffset:
tmpAsm = self.genStructAssembly(m.Members, var,structOffset,ptrName)
finalAsm += tmpAsm
else:
tmpAsm = self.genStructAssembly(m.Members, var)
finalAsm += tmpAsm
return finalAsm
def findStructMember(self, structInstance, structMember):
for m in ebpVars:
sName = list(m.keys())[0]
if m["type"] == "struct" and sName == structInstance:
allMembers = m["members"]
for mem in allMembers:
for key, value in mem.items():
if key == structMember:
offset = value
return offset
def findStructMemType(self, stMember):
for st in structs:
for m in st.Members:
for key, value in m.items():
if value == stMember:
return key
def isUnicode(self, varName):
for v in mainVars:
if v.Name == varName and v.Type == "unicode":
return True
def getVarValue(self, varName):
for v in mainVars:
if (v.Name == varName) and v.Type != "structInstance":
return v.Value
elif (v.Name == varName) and v.Type == "structInstance":
if self.isUnicode(varName):
offset = self.findStructMember(varName, "Buffer")
if x64:
result = f"rbp-{offset}"
else:
result = f"ebp-{offset}"
return result
return self.getEbpValue(varName)