x64dbg
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zydis
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made output buffer in fuzzer input tool dynamic

This commit is contained in:
Joel Höner 2016-09-01 19:14:08 +02:00
parent 589c4ae691
commit 5eee4a6b18
1 changed files with 12 additions and 2 deletions
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14
tools/ZydisFuzzIn.c
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@ -24,6 +24,12 @@
***************************************************************************************************/
/*
* This file implements a tool that is supposed to be fed as input for fuzzers like AFL,
* reading a control block from stdin, allowing the fuzzer to reach every possible
* code-path, testing any possible combination of disassembler configurations.
*/
#include <stddef.h>
#include <stdio.h>
#include <string.h>
@ -36,6 +42,7 @@ typedef struct ZydisFuzzControlBlock_ {
int decoderFlags;
int formatterStyle;
int formatterFlags;
uint8_t bufSize;
} ZydisFuzzControlBlock;
/* ============================================================================================== */
@ -75,6 +82,7 @@ int main()
}
ZydisInstructionInfo info;
char *outBuf = malloc(controlBlock.bufSize);
while (ZYDIS_SUCCESS(ZydisDecoderDecodeNextInstruction(&decoder, &info)))
{
if (info.flags & ZYDIS_IFLAG_ERROR_MASK)
@ -83,10 +91,12 @@ int main()
continue;
}
char outBuf[256];
ZydisFormatterFormatInstruction(&formatter, &info, outBuf, sizeof(outBuf));
ZydisFormatterFormatInstruction(&formatter, &info, outBuf, controlBlock.bufSize);
puts(outBuf);
}
free(outBuf);
return 0;
}
/* ============================================================================================== */