Results of ReadProcessMemory()
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Micie wrote: Are you waiting for my reaction? Well, since I did ask for clarification, a reaction response would be nice. Micie wrote: I don't u'stand last solution made by 4apai. Could some1 make this with comments? I assume the code snippet provided was to reverse the bytes of a 32-bit number. Isn't that what you requested? Micie wrote: And what do u mean by big-endian and little-endian? Try these sites for a description of endianness: http://www.webopedia.com/TERM/b/big\_endian.html http://whatis.techtarget.com/definition/0,,sid9\_gci211659,00.html http://www.netrino.com/Publications/Glossary/Endianness.html http://support.microsoft.com/default.aspx?scid=kb;en-us;102025
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
Just for the info: He wanted: bytes in memory: 00218040 bytes in result: 40802100 4api suggested: to reverse u can use following code: for (DWORD x=0x00408021, i=0, r=0; i<32; i+=4, r+=(((x << i) & 0xf0000000) >> (28 - i))); but this will reverse the whole order, not byte by byte. inputing 00218040, will result in 12080400 which is not what was requested Papa while (TRUE) Papa.WillLove ( Bebe ) ;
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Just for the info: He wanted: bytes in memory: 00218040 bytes in result: 40802100 4api suggested: to reverse u can use following code: for (DWORD x=0x00408021, i=0, r=0; i<32; i+=4, r+=(((x << i) & 0xf0000000) >> (28 - i))); but this will reverse the whole order, not byte by byte. inputing 00218040, will result in 12080400 which is not what was requested Papa while (TRUE) Papa.WillLove ( Bebe ) ;
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Just for the info: He wanted: bytes in memory: 00218040 bytes in result: 40802100 4api suggested: to reverse u can use following code: for (DWORD x=0x00408021, i=0, r=0; i<32; i+=4, r+=(((x << i) & 0xf0000000) >> (28 - i))); but this will reverse the whole order, not byte by byte. inputing 00218040, will result in 12080400 which is not what was requested Papa while (TRUE) Papa.WillLove ( Bebe ) ;
u'r the observant one) i dont pretend to get the same result as he wrote. People can make mistakes. i'm too) but he wrote: "In the results I recieve a pointer to void type as every1 know with bytes from memory. But they are reversed =\" it was quaternion reversion... bit-by-bit reversion has following syntaxis: for (DWORD x=0x00408021, i=0, r=0; i<32; i++, r+=(((x << i) & 0x80000000) >> (31 - i))); // r = 0x84010200 but it still dont get needed result. or i made some mistakes in algorythm. it'll be the hometask) i think its not a kind a reversion. maybe the truth is in the words of DavidCrow (about the endian).
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u'r the observant one) i dont pretend to get the same result as he wrote. People can make mistakes. i'm too) but he wrote: "In the results I recieve a pointer to void type as every1 know with bytes from memory. But they are reversed =\" it was quaternion reversion... bit-by-bit reversion has following syntaxis: for (DWORD x=0x00408021, i=0, r=0; i<32; i++, r+=(((x << i) & 0x80000000) >> (31 - i))); // r = 0x84010200 but it still dont get needed result. or i made some mistakes in algorythm. it'll be the hometask) i think its not a kind a reversion. maybe the truth is in the words of DavidCrow (about the endian).
Its not "bit by bit", but "byte by byte" :) (try saying it 20 times :omg: ) 00 40 80 21 (little end in) would be 21 80 40 00 (big end in) As suggested in the first post, the cast into the correct type give him the relevant result, and the compiler will handle it gladly :) Papa while (TRUE) Papa.WillLove ( Bebe ) ;
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Its not "bit by bit", but "byte by byte" :) (try saying it 20 times :omg: ) 00 40 80 21 (little end in) would be 21 80 40 00 (big end in) As suggested in the first post, the cast into the correct type give him the relevant result, and the compiler will handle it gladly :) Papa while (TRUE) Papa.WillLove ( Bebe ) ;
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:))))) 4apai. p.s. finally code sample: for (DWORD x=0x00408021, i=0, r=0; i<32; i+=8, r+=(((x << i) & 0xff000000) >> (24 - i))); // r = 0x21804000 i do it!!!)
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Gratz and thanks :) Could you translate now how u done it? I don't u'stand everything starting from r+= ... Just do as big comment as you can. :) Thanks in advance ^^
**__________ I'm made in C++... and I'm proud of it!_**for (DWORD x=0x00408021, i=0, r=0; i<32; i+=8, r+=(((x << i) & 0xff000000) >> (24 - i))); (((x << i) & 0xff000000) >> (24 - i))); << - its left bitshift operation for example: 0x00408021 << 8 = 0x40802100; then we need to trim right side of value to leave only first byte: 0x40802100 & 0xff000000 = 0x40000000; then we put this byte in reverse-order by specifiing bits for right bitshift operation 0x40000000 >> 16 = 0x00004000; finally we add this temporary value to our result variable. 4apai.
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for (DWORD x=0x00408021, i=0, r=0; i<32; i+=8, r+=(((x << i) & 0xff000000) >> (24 - i))); (((x << i) & 0xff000000) >> (24 - i))); << - its left bitshift operation for example: 0x00408021 << 8 = 0x40802100; then we need to trim right side of value to leave only first byte: 0x40802100 & 0xff000000 = 0x40000000; then we put this byte in reverse-order by specifiing bits for right bitshift operation 0x40000000 >> 16 = 0x00004000; finally we add this temporary value to our result variable. 4apai.
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Just for the info: He wanted: bytes in memory: 00218040 bytes in result: 40802100 4api suggested: to reverse u can use following code: for (DWORD x=0x00408021, i=0, r=0; i<32; i+=4, r+=(((x << i) & 0xf0000000) >> (28 - i))); but this will reverse the whole order, not byte by byte. inputing 00218040, will result in 12080400 which is not what was requested Papa while (TRUE) Papa.WillLove ( Bebe ) ;
I did not test the code, which is why I qualified my statement with "I assume." Whether it worked as intended or not, I've no clue.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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I did not test the code, which is why I qualified my statement with "I assume." Whether it worked as intended or not, I've no clue.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen