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Clean and document some example/linux (#176)

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* Clean arguments.c

* Increase query timeout from 30 to 120 seconds

* Example documentation updated

* Add ibranch comments

* crackme.py, ibranch, sindex and typos

* indexhell

* visitad typo

* typo

* strncmp example

* Typos
This commit is contained in:
feliam
2017-05-02 17:04:07 -04:00
committed by Dan Guido
parent f4e5bcf53e
commit b19a158b6f
13 changed files with 406 additions and 218 deletions
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examples/linux/indexhell.c
+38 -8
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@@ -1,20 +1,50 @@
/* This programs reads a M bytes from stdin, scrambles them, and sums them all.
* Only some buffers make the program print "You won!".
* Increasing the number of symbolic bytes can generate path constraints too hard to solve.
*
* Compile with :
* $ gcc -static -Os indexhell.c -o indexhell
*
* Analyze it with:
* $ manticore indexhell
*
* - By default manticore will consider all input of stdin symbolic
*
* 2017-04-24 12:46:46,227: [15880] MAIN:INFO: Loading program: ['indexhell']
* 2017-04-24 12:46:46,228: [15880] MAIN:INFO: Workspace: ./mcore_72BTxZ
* 2017-04-24 12:46:53,302: [15934][0] MEMORY:INFO: Reading 1 bytes from symbolic address <manticore.core.smtlib.expression.BitVecAnd object at 0x7f0ad114c4d0>
* 2017-04-24 12:46:54,093: [15934][0] MEMORY:INFO: Reading 1 bytes from symbolic address <manticore.core.smtlib.expression.BitVecAnd object at 0x7f0ad177acd0>
* 2017-04-24 12:46:54,944: [15934][0] MEMORY:INFO: Reading 1 bytes from symbolic address <manticore.core.smtlib.expression.BitVecAnd object at 0x7f0ad1051110>
* 2017-04-24 12:46:55,907: [15934][0] MEMORY:INFO: Reading 1 bytes from symbolic address <manticore.core.smtlib.expression.BitVecAnd object at 0x7f0ad115f9d0>
* 2017-04-24 12:46:56,678: [15934][0] MEMORY:INFO: Reading 1 bytes from symbolic address <manticore.core.smtlib.expression.BitVecAnd object at 0x7f0ad1009150>
* 2017-04-24 12:46:57,497: [15934][0] MEMORY:INFO: Reading 1 bytes from symbolic address <manticore.core.smtlib.expression.BitVecAnd object at 0x7f0ad1016550>
* 2017-04-24 12:47:06,520: [15934][3] EXECUTOR:INFO: Generating testcase No. 1 for state No.3 - Program finished correctly
* 2017-04-24 12:47:09,693: [15934][5] EXECUTOR:INFO: Generating testcase No. 2 for state No.5 - Program finished correctly
*
* Look at ./mcore_72BTxZ for results, you will find something like this:
* hexdump -C test_00000001.stdin
* 00000000 23 80 26 ff 4f 56 |#.&.OV|
*
* cat mcore_72BTxZ/test_00000001 | ./indexhell
* You won!
*/
#include<stdio.h>
#define M 6
main(){
int i,count;
unsigned char buffer[256];
read(0, buffer, 256);
unsigned char buffer[M];
read(0, buffer, M);
for (i=0;i <256;i++)
buffer[i] = buffer[buffer[i]] ^ buffer[i];
for (i=0; i<M; i++)
buffer[i] = buffer[buffer[i]%M] ^ buffer[i];
count = 0;
for (i=0;i <256;i++)
for (i=0; i < M; i++)
count += buffer[i];
if (count == 0x414243)
if (count == 0x123)
printf("You won!");
return 0;