mirror of
https://github.com/senzee1984/InflativeLoading
synced 2026-06-06 16:44:31 +00:00
Winslow
449 lines
17 KiB
Python
449 lines
17 KiB
Python
import ctypes, struct
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from keystone import *
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import argparse
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def print_banner():
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banner="""
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██╗███╗ ██╗███████╗██╗ █████╗ ████████╗██╗██╗ ██╗███████╗
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██║████╗ ██║██╔════╝██║ ██╔══██╗╚══██╔══╝██║██║ ██║██╔════╝
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██║██╔██╗ ██║█████╗ ██║ ███████║ ██║ ██║██║ ██║█████╗
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██║██║╚██╗██║██╔══╝ ██║ ██╔══██║ ██║ ██║╚██╗ ██╔╝██╔══╝
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██║██║ ╚████║██║ ███████╗██║ ██║ ██║ ██║ ╚████╔╝ ███████╗
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╚═╝╚═╝ ╚═══╝╚═╝ ╚══════╝╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═══╝ ╚══════╝
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██╗ ██████╗ █████╗ ██████╗ ██╗███╗ ██╗ ██████╗
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██║ ██╔═══██╗██╔══██╗██╔══██╗██║████╗ ██║██╔════╝
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██║ ██║ ██║███████║██║ ██║██║██╔██╗ ██║██║ ███╗
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██║ ██║ ██║██╔══██║██║ ██║██║██║╚██╗██║██║ ██║
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███████╗╚██████╔╝██║ ██║██████╔╝██║██║ ╚████║╚██████╔╝
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╚══════╝ ╚═════╝ ╚═╝ ╚═╝╚═════╝ ╚═╝╚═╝ ╚═══╝ ╚═════╝
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"""
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print(banner)
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print("Author: Senzee")
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print("Github Repository: https://github.com/senzee1984/InflativeLoading")
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print("Twitter: senzee@1984")
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print("Website: https://senzee.net")
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print("Description: Dynamically convert a native PE to PIC shellcode")
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print("Attention: Bugs are expected, more support and improvements are coming!\n\n\n")
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def generate_asm_by_cmdline(new_cmd):
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new_cmd_length = len(new_cmd) * 2 + 12
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unicode_cmd = [ord(c) for c in new_cmd]
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fixed_instructions = [
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"mov rsi, [rax + 0x20]; # RSI = Address of ProcessParameter",
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"add rsi, 0x70; # RSI points to CommandLine member",
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f"mov byte ptr [rsi], {new_cmd_length}; # Set Length to the length of new commandline",
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"mov byte ptr [rsi+2], 0xff; # Set the max length of cmdline to 0xff bytes",
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"mov rsi, [rsi+8]; # RSI points to the string",
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"mov dword ptr [rsi], 0x002e0031; # Push '.1'",
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"mov dword ptr [rsi+0x4], 0x00780065; # Push 'xe'",
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"mov dword ptr [rsi+0x8], 0x00200065; # Push ' e'"
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]
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start_offset = 0xC
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dynamic_instructions = []
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for i, char in enumerate(unicode_cmd):
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hex_char = format(char, '04x')
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offset = start_offset + (i * 2)
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if i % 2 == 0:
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dword = hex_char
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else:
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dword = hex_char + dword
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instruction = f"mov dword ptr [rsi+0x{offset-2:x}], 0x{dword};"
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dynamic_instructions.append(instruction)
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if len(unicode_cmd) % 2 != 0:
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instruction = f"mov word ptr [rsi+0x{offset:x}], 0x{dword};"
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dynamic_instructions.append(instruction)
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final_offset = start_offset + len(unicode_cmd) * 2
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dynamic_instructions.append(f"mov byte ptr [rsi+0x{final_offset:x}], 0;")
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instructions = fixed_instructions + dynamic_instructions
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return "\n".join(instructions)
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def read_dump_file(file_path):
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with open(file_path, 'rb') as file:
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return bytearray(file.read())
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def print_shellcode(sc):
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for i in range(min(20, len(sc))):
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line = sc[i * 20:(i + 1) * 20]
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formatted_line = ''.join([f"\\x{b:02x}" for b in line])
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print(f"buf += b\"{formatted_line}\"")
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print("......"+str(len(sc)-400) +" more bytes......")
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if __name__ == "__main__":
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print_banner()
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parser = argparse.ArgumentParser(description='Dynamically generate shellcode stub to append to the dump file')
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parser.add_argument('--bin', '-b', required=True, dest='bin',help='The binary file dumped by DumpPEFromMemory.exe')
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parser.add_argument('--cmdline', '-c', required=False, default="", dest='cmdline',help='Supplied command line')
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parser.add_argument('--output', '-o', required=True, dest='output',help='Save the PIC code as a bin file')
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parser.add_argument('--execution', '-e', required=False, default='False', dest='sc_exec',help='(Only Windows) Immediately execute shellcoded PE? True/False')
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args = parser.parse_args()
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bin= args.bin
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cmdline = args.cmdline
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output = args.output
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sc_exec = args.sc_exec
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pe_array = read_dump_file(bin)
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update_cmdline_asm = generate_asm_by_cmdline(cmdline) # Generate shellcode that used to update command line
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CODE = (
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"start:"
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" and rsp, 0xFFFFFFFFFFFFFFF0;" # Stack alignment
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" xor rdx, rdx;"
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" mov rax, gs:[rdx+0x60];" # RAX = PEB Address
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"update_cmdline:"
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f"{update_cmdline_asm}"
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"find_kernel32:"
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" mov rsi,[rax+0x18];" # RSI = Address of _PEB_LDR_DATA
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" mov rsi,[rsi + 0x30];" # RSI = Address of the InInitializationOrderModuleList
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" mov r9, [rsi];"
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" mov r9, [r9];"
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" mov r9, [r9+0x10];" # kernel32.dll
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" jmp function_stub;" # Jump to func call stub
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"parse_module:" # Parsing DLL file in memory
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" mov ecx, dword ptr [r9 + 0x3c];" # R9 = Base address of the module, ECX = NT header offset
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" xor r15, r15;"
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" mov r15b, 0x88;" # Offset to Export Directory
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" add r15, r9;"
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" add r15, rcx;" # R15 points to Export Directory
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" mov r15d, dword ptr [r15];" # R15 = RVA of export directory
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" add r15, r9;" # R15 = VA of export directory
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" mov ecx, dword ptr [r15 + 0x18];" # ECX = # of function names as an index value
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" mov r14d, dword ptr [r15 + 0x20];" # R14 = RVA of ENPT
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" add r14, r9;" # R14 = VA of ENPT
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"search_function:" # Search for a given function
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" jrcxz not_found;" # If RCX = 0, the given function is not found
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" dec ecx;" # Decrease index by 1
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" xor rsi, rsi;"
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" mov esi, [r14 + rcx*4];" # RVA of function name
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" add rsi, r9;" # RSI points to function name string
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"function_hashing:" # Hash function name function
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" xor rax, rax;"
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" xor rdx, rdx;"
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" cld;" # Clear DF flag
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"iteration:" # Iterate over each byte
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" lodsb;" # Copy the next byte of RSI to Al
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" test al, al;" # If reaching the end of the string
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" jz compare_hash;" # Compare hash
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" ror edx, 0x0d;" # Part of hash algorithm
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" add edx, eax;" # Part of hash algorithm
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" jmp iteration;" # Next byte
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"compare_hash:" # Compare hash
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" cmp edx, r8d;" # R8 = Supplied function hash
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" jnz search_function;" # If not equal, search the previous function (index decreases)
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" mov r10d, [r15 + 0x24];" # Ordinal table RVA
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" add r10, r9;" # R10 = Ordinal table VMA
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" movzx ecx, word ptr [r10 + 2*rcx];" # Ordinal value -1
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" mov r11d, [r15 + 0x1c];" # RVA of EAT
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" add r11, r9;" # r11 = VA of EAT
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" mov eax, [r11 + 4*rcx];" # RAX = RVA of the function
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" add rax, r9;" # RAX = VA of the function
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" ret;"
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"not_found:"
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" xor rax, rax;" # Return zero
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" ret;"
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"function_stub:"
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" mov rbp, r9;" # RBP stores base address of Kernel32.dll
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" mov r8d, 0xec0e4e8e;" # LoadLibraryA Hash
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" call parse_module;" # Search LoadLibraryA's address
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" mov r12, rax;" # R12 stores the address of LoadLibraryA function
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" mov r8d, 0x7c0dfcaa;" # GetProcAddress Hash
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" call parse_module;" # Search GetProcAddress's address
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" mov r13, rax;" # R13 stores the address of GetProcAddress function
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)
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ks = Ks(KS_ARCH_X86, KS_MODE_64)
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encoding, count = ks.asm(CODE)
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CODE_LEN = len(encoding) + 25
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CODE_OFFSET = 4096 - CODE_LEN
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CODE2 = (
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" jmp fix_import_dir;" # Jump to fix_import_dir section
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"find_nt_header:" # Quickly return NT header in RAX
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" xor rax, rax;"
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" mov eax, [rbx+0x3c];" # EAX contains e_lfanew
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" add rax, rbx;" # RAX points to NT Header
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" ret;"
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"fix_import_dir:" # Init necessary variable for fixing IAT
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" xor rsi, rsi;"
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" xor rdi, rdi;"
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f"lea rbx, [rip+{CODE_OFFSET}];" # Jump to the dump file
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" call find_nt_header;"
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" mov esi, [rax+0x90];" # ESI = ImportDir RVA
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" add rsi, rbx;" # RSI points to ImportDir
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" mov edi, [rax+0x94];" # EDI = ImportDir Size
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" add rdi, rsi;" # RDI = ImportDir VA + Size
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"loop_module:"
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" cmp rsi, rdi;" # Compare current descriptor with the end of import directory
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" je loop_end;" # If equal, exit the loop
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" xor rdx ,rdx;"
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" mov edx, [rsi+0x10];" # EDX = IAT RVA (32-bit)
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" test rdx, rdx;" # Check if ILT RVA is zero (end of descriptors)
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" je loop_end;" # If zero, exit the loop
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" xor rcx, rcx;"
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" mov ecx, [rsi+0xc];" # RCX = Module Name RVA
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" add rcx, rbx;" # RCX points to Module Name
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" call r12;" # Call LoadLibraryA
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" xor rdx ,rdx;"
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" mov edx, [rsi+0x10];" # Restore IAT RVA
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" add rdx, rbx;" # RDX points to IAT
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" mov rcx, rax;" # Module handle for GetProcAddress
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" mov r14, rdx;" # Backup IAT Address
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"loop_func:"
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" mov rdx, r14;" # Restore IAT address + processed entries
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" mov rdx, [rdx];" # RDX = Ordinal or RVA of HintName Table
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" test rdx, rdx;" # Check if it's the end of the IAT
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" je next_module;" # If zero, move to the next descriptor
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" mov r9, 0x8000000000000000;"
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" test rdx, r9;" # Check if it is import by ordinal (highest bit set)
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" mov rbp, rcx;" # Save module base address
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" jnz resolve_by_ordinal;" # If set, resolve by ordinal
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"resolve_by_name:"
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" add rdx, rbx;" # RDX = HintName Table VA
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" add rdx, 2;" # RDX points to Function Name
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" call r13;" # Call GetProcAddress
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" jmp update_iat;" # Go to update IAT
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"resolve_by_ordinal:"
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" mov r9, 0x7fffffffffffffff;"
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" and rdx, r9;" # RDX = Ordinal number
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" call r13;" # Call GetProcAddress with ordinal
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"update_iat:"
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" mov rcx, rbp;" # Restore module base address
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" mov rdx, r14;" # Restore IAT Address + processed entries
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" mov [rdx], rax;" # Write the resolved address to the IAT
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" add r14, 0x8;" # Movce to the next ILT entry
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" jmp loop_func;" # Repeat for the next function
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"next_module:"
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" add rsi, 0x14;" # Move to next import descriptor
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" jmp loop_module;" # Continue loop
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"loop_end:"
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"fix_basereloc_dir:" # Save RBX //dq rbx+21b0 l46
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" xor rsi, rsi;"
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" xor rdi, rdi;"
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" xor r8, r8;" # Empty R8 to save page RVA
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" xor r9, r9;" # Empty R9 to place block size
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" xor r15, r15;"
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" call find_nt_header;"
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" mov esi, [rax+0xb0];" # ESI = BaseReloc RVA
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" add rsi, rbx;" # RSI points to BaseReloc
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" mov edi, [rax+0xb4];" # EDI = BaseReloc Size
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" add rdi, rsi;" # RDI = BaseReloc VA + Size
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" mov r15d, [rax+0x28];" # R15 = Entry point RVA
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" add r15, rbx;" # R15 = Entry point
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" mov r14, [rax+0x30];" # R14 = Preferred address
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" sub r14, rbx;" # R14 = Delta address
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" mov [rax+0x30], rbx;" # Update Image Base Address
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" mov r8d, [rsi];" # R8 = First block page RVA
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" add r8, rbx;" # R8 points to first block page (Should add an offset later)
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" mov r9d, [rsi+4];" # First block's size
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" xor rax, rax;"
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" xor rcx, rcx;"
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"loop_block:"
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" cmp rsi, rdi;" # Compare current block with the end of BaseReloc
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" jge basereloc_fixed_end;" # If equal, exit the loop
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" xor r8, r8;"
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" mov r8d, [rsi];" # R8 = Current block's page RVA
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" add r8, rbx;" # R8 points to current block page (Should add an offset later)
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" mov r11, r8;" # Backup R8
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" xor r9, r9;"
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" mov r9d, [rsi+4];" # R9 = Current block size
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" add rsi, 8;" # RSI points to the 1st entry, index for inner loop for all entries
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" mov rdx, rsi;"
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" add rdx, r9;"
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" sub rdx, 8;" # RDX = End of all entries in current block
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"loop_entries:"
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" cmp rsi, rdx;" # If we reached the end of current block
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" jz next_block;" # Move to next block
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" xor rax, rax;"
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" mov ax, [rsi];" # RAX = Current entry value
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" test rax, rax;" # If entry value is 0
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" jz skip_padding_entry;" # Reach the end of entry and the last entry is a padding entry
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" mov r10, rax;" # Copy entry value to R10
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" and eax, 0xfff;" # Offset, 12 bits
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" add r8, rax;" # Added an offset
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"update_entry:"
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" sub [r8], r14;" # Update the address
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" mov r8, r11;" # Restore r8
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" add rsi, 2;" # Move to next entry by adding 2 bytes
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" jmp loop_entries;"
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"skip_padding_entry:" # If the last entry is a padding entry
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" add rsi, 2;" # Directly skip this entry
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"next_block:"
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" jmp loop_block;"
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"basereloc_fixed_end:"
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" sub rsp, 0x8;" # Stack alignment
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"fix_delayed_import_dir:"
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" call find_nt_header;"
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" mov esi, [rax+0xf0];" # ESI = DelayedImportDir RVA
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" test esi, esi;" # If RVA = 0?
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" jz delayed_loop_end;" # Skip delay import table fix
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" add rsi, rbx;" # RSI points to DelayedImportDir
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"delayed_loop_module:"
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" xor rcx, rcx;"
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" mov ecx, [rsi+4];" # RCX = Module name string RVA
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" test rcx, rcx;" # If RVA = 0, then all modules are processed
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" jz delayed_loop_end;" # Exit the module loop
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" add rcx, rbx;" # RCX = Module name
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" call r12;" # Call LoadLibraryA
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" mov rcx, rax;" # Module handle for GetProcAddress for 1st arg
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" xor r8, r8;"
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" xor rdx, rdx;"
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" mov edx, [rsi+0x10];" # EDX = INT RVA
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" add rdx, rbx;" # RDX points to INT
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" mov r8d, [rsi+0xc];" # R8 = IAT RVA
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" add r8, rbx;" # R8 points to IAT
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" mov r14, rdx;" # Backup INT Address
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" mov r15, r8;" # Backup IAT Address
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"delayed_loop_func:"
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" mov rdx, r14;" # Restore INT Address + processed data
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" mov r8, r15;" # Restore IAT Address + processed data
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" mov rdx, [rdx];" # RDX = Name Address RVA
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" test rdx, rdx;" # If Name Address value is 0, then all functions are fixed
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" jz delayed_next_module;" # Process next module
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" mov r9, 0x8000000000000000;"
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" test rdx, r9;" # Check if it is import by ordinal (highest bit set of NameAddress)
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" mov rbp, rcx;" # Save module base address
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" jnz delayed_resolve_by_ordinal;" # If set, resolve by ordinal
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"delayed_resolve_by_name:"
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" add rdx, rbx;" # RDX points to NameAddress Table
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" add rdx, 2;" # RDX points to Function Name
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" call r13;" # Call GetProcAddress
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" jmp delayed_update_iat;" # Go to update IAT
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"delayed_resolve_by_ordinal:"
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" mov r9, 0x7fffffffffffffff;"
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" and rdx, r9;" # RDX = Ordinal number
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" call r13;" # Call GetProcAddress with ordinal
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"delayed_update_iat:"
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" mov rcx, rbp;" # Restore module base address
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" mov r8, r15;" # Restore current IAT address + processed
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" mov [r8], rax;" # Write the resolved address to the IAT
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" add r15, 0x8;" # Move to the next IAT entry (64-bit addresses)
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" add r14, 0x8;" # Movce to the next INT entry
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" jmp delayed_loop_func;" # Repeat for the next function
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"delayed_next_module:"
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" add rsi, 0x20;" # Move to next delayed imported module
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" jmp delayed_loop_module;" # Continue loop
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"delayed_loop_end:"
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"all_completed:"
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" call find_nt_header;"
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" xor r15, r15;"
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" mov r15d, [rax+0x28];" # R15 = Entry point RVA
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" add r15, rbx;" # R15 = Entry point
|
|
" jmp r15;"
|
|
)
|
|
|
|
ks2 = Ks(KS_ARCH_X86, KS_MODE_64)
|
|
encoding2, count2 = ks.asm(CODE2)
|
|
encoding = encoding + encoding2
|
|
|
|
sh = b""
|
|
for e in encoding:
|
|
sh += struct.pack("B", e)
|
|
shellcode = bytearray(sh)
|
|
|
|
print("[+] Shellcode Stub size: "+str(len(shellcode))+" bytes")
|
|
print("[*] Padded to 0x1000 bytes to align with page boundary")
|
|
merged_shellcode = shellcode + b"\x90"*(0x1000-len(shellcode)) + pe_array
|
|
print("[!] Shellcoded PE's size: "+str(len(merged_shellcode))+" bytes\n\n")
|
|
print_shellcode(merged_shellcode)
|
|
|
|
|
|
try:
|
|
with open(output, 'wb') as f:
|
|
f.write(merged_shellcode)
|
|
print("\n\nGenerated shellcode successfully saved in file "+output)
|
|
except Exception as e:
|
|
print(e)
|
|
|
|
|
|
if sc_exec.lower() == "true":
|
|
ctypes.windll.kernel32.VirtualAlloc.restype = ctypes.c_uint64
|
|
ptr = ctypes.windll.kernel32.VirtualAlloc(ctypes.c_int(0), ctypes.c_int(len(merged_shellcode)), ctypes.c_int(0x3000), ctypes.c_int(0x40))
|
|
buf = (ctypes.c_char * len(merged_shellcode)).from_buffer(merged_shellcode)
|
|
ctypes.windll.kernel32.RtlMoveMemory(ctypes.c_uint64(ptr), buf, ctypes.c_int(len(merged_shellcode)))
|
|
print("\n\n[#] Shellcode located at address %s" % hex(ptr))
|
|
input("\n[!] PRESS TO EXECUTE SHELLCODED EXE...")
|
|
ht = ctypes.windll.kernel32.CreateThread(ctypes.c_int(0), ctypes.c_int(0), ctypes.c_uint64(ptr), ctypes.c_int(0), ctypes.c_int(0), ctypes.pointer(ctypes.c_int(0)))
|
|
ctypes.windll.kernel32.WaitForSingleObject(ctypes.c_int(ht),ctypes.c_int(-1))
|