CTF_Re

CTF逆向题记录

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IDA宏定义对照表

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/*

This file contains definitions used by the Hex-Rays decompiler output.
It has type definitions and convenience macros to make the
output more readable.

Copyright (c) 2007-2017 Hex-Rays

*/

#ifndef HEXRAYS_DEFS_H
#define HEXRAYS_DEFS_H

#if defined(__GNUC__)
typedef long long ll;
typedef unsigned long long ull;
#define __int64 long long
#define __int32 int
#define __int16 short
#define __int8 char
#define MAKELL(num) num ## LL
#define FMT_64 "ll"
#elif defined(_MSC_VER)
typedef __int64 ll;
typedef unsigned __int64 ull;
#define MAKELL(num) num ## i64
#define FMT_64 "I64"
#elif defined (__BORLANDC__)
typedef __int64 ll;
typedef unsigned __int64 ull;
#define MAKELL(num) num ## i64
#define FMT_64 "L"
#else
#error "unknown compiler"
#endif
typedef unsigned int uint;
typedef unsigned char uchar;
typedef unsigned short ushort;
typedef unsigned long ulong;

typedef char int8;
typedef signed char sint8;
typedef unsigned char uint8;
typedef short int16;
typedef signed short sint16;
typedef unsigned short uint16;
typedef int int32;
typedef signed int sint32;
typedef unsigned int uint32;
typedef ll int64;
typedef ll sint64;
typedef ull uint64;

// Partially defined types. They are used when the decompiler does not know
// anything about the type except its size.
#define _BYTE uint8
#define _WORD uint16
#define _DWORD uint32
#define _QWORD uint64
#if !defined(_MSC_VER)
#define _LONGLONG __int128
#endif

// Non-standard boolean types. They are used when the decompiler can not use
// the standard "bool" type because of the size mistmatch but the possible
// values are only 0 and 1. See also 'BOOL' type below.
typedef int8 _BOOL1;
typedef int16 _BOOL2;
typedef int32 _BOOL4;

#ifndef _WINDOWS_
typedef int8 BYTE;
typedef int16 WORD;
typedef int32 DWORD;
typedef int32 LONG;
typedef int BOOL; // uppercase BOOL is usually 4 bytes
#endif
typedef int64 QWORD;
#ifndef __cplusplus
typedef int bool; // we want to use bool in our C programs
#endif

#define __pure // pure function: always returns the same value, has no
// side effects

// Non-returning function
#if defined(__GNUC__)
#define __noreturn __attribute__((noreturn))
#else
#define __noreturn __declspec(noreturn)
#endif


#ifndef NULL
#define NULL 0
#endif

// Some convenience macros to make partial accesses nicer
#define LAST_IND(x,part_type) (sizeof(x)/sizeof(part_type) - 1)
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
# define LOW_IND(x,part_type) LAST_IND(x,part_type)
# define HIGH_IND(x,part_type) 0
#else
# define HIGH_IND(x,part_type) LAST_IND(x,part_type)
# define LOW_IND(x,part_type) 0
#endif
// first unsigned macros:
#define BYTEn(x, n) (*((_BYTE*)&(x)+n))
#define WORDn(x, n) (*((_WORD*)&(x)+n))
#define DWORDn(x, n) (*((_DWORD*)&(x)+n))

#define LOBYTE(x) BYTEn(x,LOW_IND(x,_BYTE))
#define LOWORD(x) WORDn(x,LOW_IND(x,_WORD))
#define LODWORD(x) DWORDn(x,LOW_IND(x,_DWORD))
#define HIBYTE(x) BYTEn(x,HIGH_IND(x,_BYTE))
#define HIWORD(x) WORDn(x,HIGH_IND(x,_WORD))
#define HIDWORD(x) DWORDn(x,HIGH_IND(x,_DWORD))
#define BYTE1(x) BYTEn(x, 1) // byte 1 (counting from 0)
#define BYTE2(x) BYTEn(x, 2)
#define BYTE3(x) BYTEn(x, 3)
#define BYTE4(x) BYTEn(x, 4)
#define BYTE5(x) BYTEn(x, 5)
#define BYTE6(x) BYTEn(x, 6)
#define BYTE7(x) BYTEn(x, 7)
#define BYTE8(x) BYTEn(x, 8)
#define BYTE9(x) BYTEn(x, 9)
#define BYTE10(x) BYTEn(x, 10)
#define BYTE11(x) BYTEn(x, 11)
#define BYTE12(x) BYTEn(x, 12)
#define BYTE13(x) BYTEn(x, 13)
#define BYTE14(x) BYTEn(x, 14)
#define BYTE15(x) BYTEn(x, 15)
#define WORD1(x) WORDn(x, 1)
#define WORD2(x) WORDn(x, 2) // third word of the object, unsigned
#define WORD3(x) WORDn(x, 3)
#define WORD4(x) WORDn(x, 4)
#define WORD5(x) WORDn(x, 5)
#define WORD6(x) WORDn(x, 6)
#define WORD7(x) WORDn(x, 7)

// now signed macros (the same but with sign extension)
#define SBYTEn(x, n) (*((int8*)&(x)+n))
#define SWORDn(x, n) (*((int16*)&(x)+n))
#define SDWORDn(x, n) (*((int32*)&(x)+n))

#define SLOBYTE(x) SBYTEn(x,LOW_IND(x,int8))
#define SLOWORD(x) SWORDn(x,LOW_IND(x,int16))
#define SLODWORD(x) SDWORDn(x,LOW_IND(x,int32))
#define SHIBYTE(x) SBYTEn(x,HIGH_IND(x,int8))
#define SHIWORD(x) SWORDn(x,HIGH_IND(x,int16))
#define SHIDWORD(x) SDWORDn(x,HIGH_IND(x,int32))
#define SBYTE1(x) SBYTEn(x, 1)
#define SBYTE2(x) SBYTEn(x, 2)
#define SBYTE3(x) SBYTEn(x, 3)
#define SBYTE4(x) SBYTEn(x, 4)
#define SBYTE5(x) SBYTEn(x, 5)
#define SBYTE6(x) SBYTEn(x, 6)
#define SBYTE7(x) SBYTEn(x, 7)
#define SBYTE8(x) SBYTEn(x, 8)
#define SBYTE9(x) SBYTEn(x, 9)
#define SBYTE10(x) SBYTEn(x, 10)
#define SBYTE11(x) SBYTEn(x, 11)
#define SBYTE12(x) SBYTEn(x, 12)
#define SBYTE13(x) SBYTEn(x, 13)
#define SBYTE14(x) SBYTEn(x, 14)
#define SBYTE15(x) SBYTEn(x, 15)
#define SWORD1(x) SWORDn(x, 1)
#define SWORD2(x) SWORDn(x, 2)
#define SWORD3(x) SWORDn(x, 3)
#define SWORD4(x) SWORDn(x, 4)
#define SWORD5(x) SWORDn(x, 5)
#define SWORD6(x) SWORDn(x, 6)
#define SWORD7(x) SWORDn(x, 7)


// Helper functions to represent some assembly instructions.

#ifdef __cplusplus

// compile time assertion
#define __CASSERT_N0__(l) COMPILE_TIME_ASSERT_ ## l
#define __CASSERT_N1__(l) __CASSERT_N0__(l)
#define CASSERT(cnd) typedef char __CASSERT_N1__(__LINE__) [(cnd) ? 1 : -1]

// check that unsigned multiplication does not overflow
template<class T> bool is_mul_ok(T count, T elsize)
{
CASSERT((T)(-1) > 0); // make sure T is unsigned
if ( elsize == 0 || count == 0 )
return true;
return count <= ((T)(-1)) / elsize;
}

// multiplication that saturates (yields the biggest value) instead of overflowing
// such a construct is useful in "operator new[]"
template<class T> bool saturated_mul(T count, T elsize)
{
return is_mul_ok(count, elsize) ? count * elsize : T(-1);
}

#include <stddef.h> // for size_t

// memcpy() with determined behavoir: it always copies
// from the start to the end of the buffer
// note: it copies byte by byte, so it is not equivalent to, for example, rep movsd
inline void *qmemcpy(void *dst, const void *src, size_t cnt)
{
char *out = (char *)dst;
const char *in = (const char *)src;
while ( cnt > 0 )
{
*out++ = *in++;
--cnt;
}
return dst;
}

// Generate a reference to pair of operands
template<class T> int16 __PAIR__( int8 high, T low) { return ((( int16)high) << sizeof(high)*8) | uint8(low); }
template<class T> int32 __PAIR__( int16 high, T low) { return ((( int32)high) << sizeof(high)*8) | uint16(low); }
template<class T> int64 __PAIR__( int32 high, T low) { return ((( int64)high) << sizeof(high)*8) | uint32(low); }
template<class T> uint16 __PAIR__(uint8 high, T low) { return (((uint16)high) << sizeof(high)*8) | uint8(low); }
template<class T> uint32 __PAIR__(uint16 high, T low) { return (((uint32)high) << sizeof(high)*8) | uint16(low); }
template<class T> uint64 __PAIR__(uint32 high, T low) { return (((uint64)high) << sizeof(high)*8) | uint32(low); }

// rotate left
template<class T> T __ROL__(T value, int count)
{
const uint nbits = sizeof(T) * 8;

if ( count > 0 )
{
count %= nbits;
T high = value >> (nbits - count);
if ( T(-1) < 0 ) // signed value
high &= ~((T(-1) << count));
value <<= count;
value |= high;
}
else
{
count = -count % nbits;
T low = value << (nbits - count);
value >>= count;
value |= low;
}
return value;
}

inline uint8 __ROL1__(uint8 value, int count) { return __ROL__((uint8)value, count); }
inline uint16 __ROL2__(uint16 value, int count) { return __ROL__((uint16)value, count); }
inline uint32 __ROL4__(uint32 value, int count) { return __ROL__((uint32)value, count); }
inline uint64 __ROL8__(uint64 value, int count) { return __ROL__((uint64)value, count); }
inline uint8 __ROR1__(uint8 value, int count) { return __ROL__((uint8)value, -count); }
inline uint16 __ROR2__(uint16 value, int count) { return __ROL__((uint16)value, -count); }
inline uint32 __ROR4__(uint32 value, int count) { return __ROL__((uint32)value, -count); }
inline uint64 __ROR8__(uint64 value, int count) { return __ROL__((uint64)value, -count); }

// carry flag of left shift
template<class T> int8 __MKCSHL__(T value, uint count)
{
const uint nbits = sizeof(T) * 8;
count %= nbits;

return (value >> (nbits-count)) & 1;
}

// carry flag of right shift
template<class T> int8 __MKCSHR__(T value, uint count)
{
return (value >> (count-1)) & 1;
}

// sign flag
template<class T> int8 __SETS__(T x)
{
if ( sizeof(T) == 1 )
return int8(x) < 0;
if ( sizeof(T) == 2 )
return int16(x) < 0;
if ( sizeof(T) == 4 )
return int32(x) < 0;
return int64(x) < 0;
}

// overflow flag of subtraction (x-y)
template<class T, class U> int8 __OFSUB__(T x, U y)
{
if ( sizeof(T) < sizeof(U) )
{
U x2 = x;
int8 sx = __SETS__(x2);
return (sx ^ __SETS__(y)) & (sx ^ __SETS__(x2-y));
}
else
{
T y2 = y;
int8 sx = __SETS__(x);
return (sx ^ __SETS__(y2)) & (sx ^ __SETS__(x-y2));
}
}

// overflow flag of addition (x+y)
template<class T, class U> int8 __OFADD__(T x, U y)
{
if ( sizeof(T) < sizeof(U) )
{
U x2 = x;
int8 sx = __SETS__(x2);
return ((1 ^ sx) ^ __SETS__(y)) & (sx ^ __SETS__(x2+y));
}
else
{
T y2 = y;
int8 sx = __SETS__(x);
return ((1 ^ sx) ^ __SETS__(y2)) & (sx ^ __SETS__(x+y2));
}
}

// carry flag of subtraction (x-y)
template<class T, class U> int8 __CFSUB__(T x, U y)
{
int size = sizeof(T) > sizeof(U) ? sizeof(T) : sizeof(U);
if ( size == 1 )
return uint8(x) < uint8(y);
if ( size == 2 )
return uint16(x) < uint16(y);
if ( size == 4 )
return uint32(x) < uint32(y);
return uint64(x) < uint64(y);
}

// carry flag of addition (x+y)
template<class T, class U> int8 __CFADD__(T x, U y)
{
int size = sizeof(T) > sizeof(U) ? sizeof(T) : sizeof(U);
if ( size == 1 )
return uint8(x) > uint8(x+y);
if ( size == 2 )
return uint16(x) > uint16(x+y);
if ( size == 4 )
return uint32(x) > uint32(x+y);
return uint64(x) > uint64(x+y);
}

#else
// The following definition is not quite correct because it always returns
// uint64. The above C++ functions are good, though.
#define __PAIR__(high, low) (((uint64)(high)<<sizeof(high)*8) | low)
// For C, we just provide macros, they are not quite correct.
#define __ROL__(x, y) __rotl__(x, y) // Rotate left
#define __ROR__(x, y) __rotr__(x, y) // Rotate right
#define __CFSHL__(x, y) invalid_operation // Generate carry flag for (x<<y)
#define __CFSHR__(x, y) invalid_operation // Generate carry flag for (x>>y)
#define __CFADD__(x, y) invalid_operation // Generate carry flag for (x+y)
#define __CFSUB__(x, y) invalid_operation // Generate carry flag for (x-y)
#define __OFADD__(x, y) invalid_operation // Generate overflow flag for (x+y)
#define __OFSUB__(x, y) invalid_operation // Generate overflow flag for (x-y)
#endif

// No definition for rcl/rcr because the carry flag is unknown
#define __RCL__(x, y) invalid_operation // Rotate left thru carry
#define __RCR__(x, y) invalid_operation // Rotate right thru carry
#define __MKCRCL__(x, y) invalid_operation // Generate carry flag for a RCL
#define __MKCRCR__(x, y) invalid_operation // Generate carry flag for a RCR
#define __SETP__(x, y) invalid_operation // Generate parity flag for (x-y)

// In the decompilation listing there are some objects declarared as _UNKNOWN
// because we could not determine their types. Since the C compiler does not
// accept void item declarations, we replace them by anything of our choice,
// for example a char:

#define _UNKNOWN char

#ifdef _MSC_VER
#define snprintf _snprintf
#define vsnprintf _vsnprintf
#endif

#endif // HEXRAYS_DEFS_H

环境构建

兜兜转转,最后还是回到了双系统…

大一上:分别使用了Ubuntu18.04LTS和Deepin15,体验相当不爽

大一下&大二上:使用WSL2+HyperV,体验良好,但是仍然有不少小bug

现在:Manjaro-Kde+Windows双系统

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CTF_Misc

CTF杂项题记录

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VMware虚拟机桥接网卡

在使用虚拟机的过程中,出现了桥接网络无法获取IP的情况,现记录解决方法

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UbuntuServer更换初始软件源

在Ubuntu Server的初始化中,默认的软件源是http://cn.archive.ubuntu.com/

这个软件源在中国大陆访问会出现无法连接上软件源的情况,需要对其进行更换

Ubuntu18.04国内源

将默认的http://cn.archive.ubuntu.com/修改为http://mirrors.aliyun.com/ubuntu/可以跑满带宽