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Update disassembler library #509

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merged 2 commits into from
Mar 11, 2019
Merged

Update disassembler library #509

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c2e130f
Update disassembler
mattnotmitt Mar 10, 2019
432d5b4
Fix some misspellings
mattnotmitt Mar 10, 2019
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65 changes: 52 additions & 13 deletions src/core/vendor/DisassembleX86-64.mjs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,31 @@
/*-------------------------------------------------------------------------------------------------------------------------
Created by Damian Recoskie (https://github.com/Recoskie/X86-64-Disassembler-JS)
& exported for CyberChef by Matt [me@mitt.dev]
---------------------------------------------------------------------------------------------------------------------------
MIT License

Copyright (c) 2019 Damian Recoskie

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
-------------------------------------------------------------------------------------------------------------------------*/


/*-------------------------------------------------------------------------------------------------------------------------
Binary byte code array.
---------------------------------------------------------------------------------------------------------------------------
Expand Down Expand Up @@ -3585,7 +3613,6 @@ function NextByte()
if ( CodePos < BinCode.length ) //If not out of bounds.
{
//Convert current byte to String, and pad.
var t;

( ( t = BinCode[CodePos++].toString(16) ).length === 1) && ( t = "0" + t );

Expand Down Expand Up @@ -4017,21 +4044,33 @@ function DecodeImmediate( type, BySize, SizeSetting )

Pad32 = ( Math.min( BitMode, 1 ) << 2 ) + 4; Pad64 = Math.max( Math.min( BitMode, 2 ), 1 ) << 3;

//Add the 32 bit section to V32.

var C64 = 0; V32 += Pos32;

//If bit mode is 16 bits only the first 16 bits are used, or if Size Attribute is 16 bit.

( BitMode <= 0 || SizeAttrSelect <= 0 ) && ( V32 &= 0xFFFF );

//Adjust the 32 bit relative address section if it was not cropped to 16 bit's.
//Carry bit to 64 bit section.

var C64 = 0;

//Relative size.

var n = Math.min( 0x100000000, Math.pow( 2, 4 << ( S + 1 ) ) );

//Sing bit adjust.
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if( V32 >= ( n >> 1 ) ) { V32 -= n; }

//Add position.

V32 += Pos32;

//Remove carry bit and add it to C64.

( C64 = ( ( V32 ) > 0xFFFFFFFF ) ) && ( V32 -= 0x100000000 );
( C64 = ( ( V32 ) >= 0x100000000 ) ) && ( V32 -= 0x100000000 );

//Do not carry to 64 if address is 32, and below.

if ( S <= 2 ) { C64 = false; }

//Add the 64 bit address section if in 64 bit mode, or higher.
//Add the 64 bit position plus carry.

( BitMode >= 2 ) && ( ( V64 += Pos64 + C64 ) > 0xFFFFFFFF ) && ( V64 -= 0x100000000 );
( ( V64 += Pos64 + C64 ) > 0xFFFFFFFF ) && ( V64 -= 0x100000000 );
}

/*---------------------------------------------------------------------------------------------------------------------------
Expand Down