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48 lines
1.3 KiB
48 lines
1.3 KiB
3 years ago
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This directory contains cstool of Capstone Engine.
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Cstool is a command-line tool to disassemble assembly hex-string.
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For example, to decode a hexcode string for Intel 32bit, run:
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$ cstool x32 "90 91"
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0 90 nop
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1 91 xchg eax, ecx
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Cstool disassembles the input and prints out the assembly instructions.
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On each line, the first column is the instruction offset, the second
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column is opcodes, and the rest is the instruction itself.
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Cstool is flexible enough to accept all kind of hexcode format. The following
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inputs have the same output with the example above.
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$ cstool x32 "0x90 0x91"
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$ cstool x32 "\x90\x91"
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$ cstool x32 "90,91"
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$ cstool x32 "90;91"
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$ cstool x32 "90+91"
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$ cstool x32 "90:91"
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To print out instruction details, run Cstool with -d option, like below.
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$ cstool -d x32 "01 d8"
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0 01d8 add eax, ebx
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Prefix:0x00 0x00 0x00 0x00
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Opcode:0x01 0x00 0x00 0x00
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rex: 0x0
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addr_size: 4
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modrm: 0xd8
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disp: 0x0
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sib: 0x0
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op_count: 2
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operands[0].type: REG = eax
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operands[0].size: 4
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operands[0].access: READ | WRITE
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operands[1].type: REG = ebx
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operands[1].size: 4
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operands[1].access: READ
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Registers read: eax ebx
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Registers modified: eflags eax
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EFLAGS: MOD_AF MOD_CF MOD_SF MOD_ZF MOD_PF MOD_OF
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To see all the supported options, run ./cstool
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