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[C++]0x0000<-?

 
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Wiw3K
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PostPosted: Fri Dec 19, 2008 6:03 am    Post subject: [C++]0x0000<-? Reply with quote
yo.

Quote:
*(WORD*)0x00001337 = 0x9090; //9090 mean 2 byte nop so just nop. but i only know that nop... where i can learn how to convert ex. db 0F 84 this to 0x**** Confused
TehHax = 1;


this mean adress 00001337 will be nop.
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SXGuy
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PostPosted: Fri Dec 19, 2008 6:10 am    Post subject: Reply with quote
are you retarded? if nop nop = db 90 90

then db 0f 84 = 0x0f84
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Symbol
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PostPosted: Fri Dec 19, 2008 6:15 am    Post subject: Reply with quote
Actually the bytes order is opposite.
0x840F.
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Wiw3K
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PostPosted: Fri Dec 19, 2008 6:20 am    Post subject: Reply with quote
SXGuy wrote:
are you retarded? if nop nop = db 90 90

then db 0f 84 = 0x0f84

.... i said 0x9090 mean NOP -.-
how you know db 0f 84 = 0x0f84 ?? i want to learn how you convert it

Symbol wrote:
Actually the bytes order is opposite.
0x840F.

so this is correct?

how you know it should be 0x840f ? how about db thing
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Stylo
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PostPosted: Fri Dec 19, 2008 7:07 am    Post subject: Reply with quote
what you're seeing at CE calls auto assembly
CE familiar with that syntax cuz it was built for it
asm language doesn't know what db 90 90 means
db in asm means define byte (a byte size variable)
db 90 90 means in auto asm define byte at the specific address (in that case nop nop)
in C++ we'll say
Code:

*(BYTE*)addr = 0x90;
*(BYTE*)(addr + 0x1) = 0x90;
// or
// *(WORD*)addr = 9090;

the hex bytes you're talking about at the top are already hex Surprised
you should read them from the end to start and put them inside the address
jut like symbol said - db 12 34 = 3412
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nog_lorp
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PostPosted: Fri Dec 19, 2008 2:00 pm    Post subject: Reply with quote
DB means data byte.
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slippppppppp
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PostPosted: Fri Dec 19, 2008 7:55 pm    Post subject: Reply with quote
Go on CheatEngine open memory viewer. See the Opcodes? To the left of it are the bytes corresponding to the opcode. Put two and two together and yah!
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Zerith
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PostPosted: Fri Dec 19, 2008 11:19 pm    Post subject: Reply with quote
nog_lorp wrote:
DB means data byte.


Define Byte. Wink
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