mirror of
https://github.com/Obfuscator-Collections/VMProtect.git
synced 2024-12-26 08:20:19 +03:00
123 lines
2.6 KiB
Python
123 lines
2.6 KiB
Python
from idc import *
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import sys
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import binascii
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from sets import Set
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import sys
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import re
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p_spaces = re.compile(r'(\s+)')
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# Apply fixes to IDA opcode
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def ida_disasm_fix(insn_binary, insn_str):
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# Remove extra spaces and tabs. Replace tabs with spaces
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insn_str = p_spaces.sub(r' ', insn_str)
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return insn_str
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def get_insn(ea, sz):
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s = ''
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for i in range(0, sz):
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s += chr(Byte(ea + i))
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return s
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def insn_write(f, insn_binary, insn_str, header):
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assert len(insn_binary) != 0
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s = ''
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sz = len(insn_binary)
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if header:
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s += '{%d, "' % sz
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for i in range(0, sz):
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s += '\\x%02x' % ord(insn_binary[i])
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s += '", "' + insn_str + '"},\n'
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else:
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s += binascii.hexlify(insn_binary)
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s += (' %s\n' % insn_str)
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f.write(s)
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f.flush()
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# Normalize operand (replace numeric operands with -1)
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def normalize_operand(op_type, op_str):
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if op_type in [o_mem, o_displ, o_imm, o_near, o_far]:
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return "-1"
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else:
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return op_str
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def is_unique(set, ea):
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ot1 = GetOpType(ea, 0)
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ot2 = GetOpType(ea, 1)
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ot3 = GetOpType(ea, 2)
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v1 = GetOpnd(ea, 0)
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v2 = GetOpnd(ea, 1)
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v3 = GetOpnd(ea, 2)
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mnem = GetMnem(ea)
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hashstr = "%s|%s|%s|%s" % (mnem,
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normalize_operand(ot1, v1),
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normalize_operand(ot2, v2),
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normalize_operand(ot3, v3))
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if hashstr in set:
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return False
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else:
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set.add(hashstr)
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return True
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def iteration(f, set, ea, n, data, prev_mnem):
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PatchDword(ea, data)
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sz = MakeCode(ea)
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if sz == 0:
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return (prev_mnem, n)
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str = GetDisasm(ea)
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mnem = GetMnem(ea)
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if prev_mnem != mnem:
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# Opcode changed, purge cache set
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set.clear()
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prev_mnem = mnem
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# Now we got disasm
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# Remove comments
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pos = str.find(';')
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if pos != -1:
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str = str[0:pos]
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# Remove spaces at start and end
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str = str.strip(' ')
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if str == '':
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return (prev_mnem, n)
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if not is_unique(set, ea):
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return (prev_mnem, n)
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insn_binary = get_insn(ea, sz)
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# Add unique disasms to file
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str = ida_disasm_fix(insn_binary, str)
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insn_write(f, insn_binary, str, False)
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n += 1
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if n % 1000 == 0:
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print '%d opcodes processed' % n
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return (prev_mnem, n)
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def generate_arm_thumb(filename):
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set = Set()
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ea = GetEntryPoint(GetEntryOrdinal(0))
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for i in range(0, 20):
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PatchByte(ea + i, i)
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f = open(filename, 'wt')
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data = 0L
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mnem = ''
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data = 0
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n = 0
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while data <= 0xffff:
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prefix = data >> (32 - 5)
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if prefix in [0x1d, 0x1e, 0x1f]:
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data2 = 0
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while data2 <= 0xffff:
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(mnem, n) = iteration(f, set, ea, n, data | (data2 << 16), mnem)
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data2 += 1
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else:
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mnem = iteration(f, set, ea, n, data | 0xffff0000, mnem)
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data += 1
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f.close()
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print 'Finished'
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def main():
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generate_arm_thumb("./thumb-opcodes.txt")
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if __name__ == "__main__":
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main()
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