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zl_decompile.cpp
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zl_decompile.cpp
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//#include "stdafx.h"
#include "zl_decompile.h"
#include "zl_opcodes.h"
//#include <string.h>
//#include <zalloc.h>
#include <stdio.h>
//#include "../zinc/utstrings.h"
char *reg(unsigned long k)
{
static char *regs[] = {"eip", "esp", "eax", "ecx", "ebx", "edx", "ebp", "esd", "ebd", "esi", "edi", "eflags"};
static char error_str[256] = "";
if(k > ((sizeof(regs)/sizeof(regs[0])) - 1))
{
snprintf(error_str, 255, "Bad code, invalid register id (=%u)", k);
return error_str;
}
return regs[k];
}
unsigned long zl_decompile(unsigned char *hardcode, unsigned long offset, unsigned long hard_code_size)
{
unsigned long zl_eip;
unsigned long zl_eof;
zl_eip = dw(hardcode) + offset;
zl_eof = dw(hardcode) + offset + hard_code_size;
while(zl_eip < zl_eof)
{
switch(instr(zl_eip))
{
case OP_POP_REG:
nextinstr(zl_eip);
printf("%.4u: pop %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)));
zl_eip++;
continue;
case OP_POP_MEM:
nextinstr(zl_eip);
printf("%.4u: pop [%.4Xh]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_PUSH_REG:
nextinstr(zl_eip);
printf("%.4u: push %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)));
zl_eip++;
continue;
case OP_PUSH_IMM:
nextinstr(zl_eip);
printf("%.4u: push %d\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_PUSH_OFFSET:
nextinstr(zl_eip);
printf("%.4u: push data offset [%.4d]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_PUSH_FUNC:
nextinstr(zl_eip);
printf("%.4u: push func address [%.4d]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_PUSH_MEM:
nextinstr(zl_eip);
printf("%.4u: push var value [%.4Xh]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_PUSH_PMEM:
nextinstr(zl_eip);
printf("%.4u: push dword ptr to value [%.4Xh]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_CMP_REG_REG:
nextinstr(zl_eip);
printf("%.4u: cmp %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip + 1)));
zl_eip += 2;
continue;
case OP_TEST_REG_REG:
nextinstr(zl_eip);
printf("%.4u: test %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_ADD_REG_REG:
nextinstr(zl_eip);
printf("%.4u: add %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_SUB_REG_IMM:
nextinstr(zl_eip);
printf("%.4u: sub %s, %u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), pdw(zl_eip+1));
zl_eip += 5;
continue;
case OP_SUB_REG_REG:
nextinstr(zl_eip);
printf("%.4u: sub %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_MUL_REG_REG:
nextinstr(zl_eip);
printf("%.4u: mul %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_DIV_REG_REG:
nextinstr(zl_eip);
printf("%.4u: div %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_MOD_REG_REG:
nextinstr(zl_eip);
printf("%.4u: mod %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_G_REG_REG:
nextinstr(zl_eip);
printf("%.4u: g %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_GE_REG_REG:
nextinstr(zl_eip);
printf("%.4u: ge %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_LE_REG_REG:
nextinstr(zl_eip);
printf("%.4u: le %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_L_REG_REG:
nextinstr(zl_eip);
printf("%.4u: l %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_E_REG_REG:
nextinstr(zl_eip);
printf("%.4u: e %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_NE_REG_REG:
nextinstr(zl_eip);
printf("%.4u: ne %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_OR_REG_REG:
nextinstr(zl_eip);
printf("%.4u: or %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_AND_REG_REG:
nextinstr(zl_eip);
printf("%.4u: and %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_SHR_REG_REG:
nextinstr(zl_eip);
printf("%.4u: and %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_SHL_REG_REG:
nextinstr(zl_eip);
printf("%.4u: and %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_XOR_REG_REG:
nextinstr(zl_eip);
printf("%.4u: xor %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_MOV_REG_REG:
nextinstr(zl_eip);
printf("%.4u: mov %s, %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_MOV_PREG_REG:
nextinstr(zl_eip);
printf("%.4u: mov [%s], %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_MOV_PREG_PREG:
nextinstr(zl_eip);
printf("%.4u: mov [%s], [%s]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip + 1)));
zl_eip += 2;
continue;
case OP_MOV_REG_PREG:
nextinstr(zl_eip);
printf("%.4u: mov %s, [%s]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), reg(pdb(zl_eip+1)));
zl_eip += 2;
continue;
case OP_MOV_MEM_REG:
nextinstr(zl_eip);
printf("%.4u: mov [%.4Xh], %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip), reg(pdb(zl_eip+4)));
zl_eip += 5;
continue;
case OP_MOV_REG_MEM:
nextinstr(zl_eip);
printf("%.4u: mov %s, [%.4Xh]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), pdw(zl_eip+1));
zl_eip += 5;
continue;
case OP_MOV_REG_IMM:
nextinstr(zl_eip);
printf("%.4u: mov %s, %u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), pdw(zl_eip+1));
zl_eip += 5;
continue;
case OP_ADD_REG_IMM:
nextinstr(zl_eip);
printf("%.4u: add %s, %u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)), pdw(zl_eip+1));
zl_eip += 5;
continue;
case OP_INC_REG:
nextinstr(zl_eip);
printf("%.4u: inc %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)));
zl_eip++;
continue;
case OP_DEC_REG:
nextinstr(zl_eip);
printf("%.4u: dec %s\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)));
zl_eip++;
continue;
case OP_JNE:
nextinstr(zl_eip);
printf("%.4u: jne %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_JZ:
nextinstr(zl_eip);
printf("%.4u: jz %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_JNZ:
nextinstr(zl_eip);
printf("%.4u: jnz %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_JMP:
nextinstr(zl_eip);
printf("%.4u: jmp %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_CALL_IMM:
nextinstr(zl_eip);
printf("%.4u: call near %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_CALL_REG:
nextinstr(zl_eip);
printf("%.4u: call near [%s]\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, reg(pdb(zl_eip)));
zl_eip += 1;
continue;
case OP_CALL_FAR:
nextinstr(zl_eip);
printf("%.4u: call far %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_RCALL_FAR:
nextinstr(zl_eip);
printf("%.4u: rcall far %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdw(zl_eip));
zl_eip += 4;
continue;
case OP_ADD_STK_STK:
printf("%.4u: add_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_SUB_STK_STK:
printf("%.4u: sub_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_MUL_STK_STK:
printf("%.4u: mul_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_MOD_STK_STK:
printf("%.4u: mod_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_DIV_STK_STK:
printf("%.4u: div_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_OR_STK_STK:
printf("%.4u: or_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_AND_STK_STK:
printf("%.4u: and_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_XOR_STK_STK:
printf("%.4u: xor_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_SHL_STK_STK:
printf("%.4u: shl_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_SHR_STK_STK:
printf("%.4u: shr_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_E_STK_STK:
printf("%.4u: e_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_NE_STK_STK:
printf("%.4u: ne_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_L_STK_STK:
printf("%.4u: l_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_LE_STK_STK:
printf("%.4u: le_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_G_STK_STK:
printf("%.4u: g_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_GE_STK_STK:
printf("%.4u: ge_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_UL_STK_STK:
printf("%.4u: ul_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_ULE_STK_STK:
printf("%.4u: ule_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_UG_STK_STK:
printf("%.4u: ug_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_UGE_STK_STK:
printf("%.4u: uge_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_LNOT_STK:
printf("%.4u: lnot_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_BNOT_STK:
printf("%.4u: not_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_MINUS_STK:
printf("%.4u: minus_stk\n", dw(zl_eip) - dw(hardcode));
break;
case OP_JZ_STK:
nextinstr(zl_eip);
printf("%.4u: jz_stk %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_JNZ_STK:
nextinstr(zl_eip);
printf("%.4u: jnz_stk %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_JZ_POP_STK:
nextinstr(zl_eip);
printf("%.4u: jz_pop_stk %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_JNZ_POP_STK:
nextinstr(zl_eip);
printf("%.4u: jnz_pop_stk %.4u\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, dw(zl_eip) - dw(hardcode) + pdw(zl_eip));
zl_eip += 4;
continue;
case OP_SIZE_OVERRIDE_1:
printf("%.4u: size override to 1 byte for next operation\n", dw(zl_eip) - dw(hardcode));
break;
case OP_SIZE_OVERRIDE_2:
printf("%.4u: size override to 2 bytes for next operation\n", dw(zl_eip) - dw(hardcode));
break;
case OP_DBG_PRINT:
printf("%.4u: dbg_print_regs\n", dw(zl_eip) - dw(hardcode));
break;
case OP_RET:
printf("%.4u: ret\n", dw(zl_eip) - dw(hardcode));
break;
case OP_RET_IMM:
nextinstr(zl_eip);
printf("%.4u: push %d\n", dw(zl_eip) - dw(hardcode) - ZL_INSTRUCTION_LENGTH, pdb(zl_eip));
zl_eip += 1;
continue;
case OP_NOP:
printf("%.4u: nop\n", dw(zl_eip) - dw(hardcode));
break;
case OP_EOF:
printf("%.4u: $end\n", dw(zl_eip) - dw(hardcode));
break;
default:
printf("%.4u: %Xh - unknown instruction\n", dw(zl_eip) - dw(hardcode), instr(zl_eip));
}
nextinstr(zl_eip);
}
//printf("%.4u: $end\n", dw(zl_eip) - dw(hardcode));
return 0L;
}