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Commit Graph

5 Commits

Author SHA1 Message Date
BITDEFENDER\vlutas
089e6d5e7e Significant cleanup in disasmtool: the obsolete search functionality, and supplying registers for shemu from a file are no longer supported. 2023-02-02 21:46:24 +02:00
BITDEFENDER\vlutas
61382e95f0 Since all the shemu test file are synthetic and clean, I removed the password from the test archive. 2022-12-16 15:17:39 +02:00
Andrei Vlad LUTAS
f6050661d5 Multiple improvements in bdshemu
Fixed an emulation bug for MOVZX and MOVSX instructions (https://github.com/bitdefender/bddisasm/issues/48)
New shellcode flag - call tot Wow32 reserved.
New shellcode flag - heaven's gate.
New shellcode flag - stack-pivot.
Moved bdshemu tests in a password protected zip file, so it doesn't trigger AV detections.
2021-08-10 11:43:51 +03:00
Andrei Vlad LUTAS
752bc626c4 Fixed RET with immediate - the immediate is not sign-extended.
Fixed VEX decoding in 32 bit mode - vex.vvvv bit 3 is simply ignored.
Fixed several FMA instructions decoding (L/W flag should be ignored).
Print the 64 bit immediate value in disassembly, instead of the raw immediate (note that the operand always contains the sign-extended, full immediate).
XBEGIN always uses 32/64 bit RIP size (0x66 does not affect its size).
Decode WBINVD even if it's preceded by 0x66/0xF2 prefixes.
Several mnemonic fixes (FXSAVE64, FXRSTOR64, PUSHA/PUSHAD...).
Properly decode VPERMIL2* instructions.
Fixed SSE register decoding when it is encoded in immediate.
Decode SCATTER instructions even though they use the VSIB index as source.
Some disp8 fixes (t1s -> t1s8/t1s16).
SYSCALL/SYSRET are decoded and executed in 32 bit compat modem, even though SDM states they are invalid.
RDPID uses 32/64 bit reg size, never 16.
Various other minor tweaks & fixes.
Re-generated the test files, and added some more, new tests.
2020-07-23 14:08:01 +03:00
Andrei Vlad LUTAS
698ba367a1 Initial commit. 2020-07-21 11:19:18 +03:00