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Chris Greene cwgreene

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  • Exploding at the origin
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cwgreene / ghidra_output.txt
Created June 4, 2020 08:34
-_DT_INIT - __gmon_start__()
-entry
- __libc_start_main(FUN_001013af,in_stack_00000000,&stack0x00000008,&LAB_00101530,&DAT_001015a0,param_3,auStack8)
-FUN_00100b80
-_FINI_0
- __cxa_finalize(PTR_LOOP_00302008)
- FUN_00100b80()
-_INIT_0
-FUN_00100c5a
- puts("Welcome to the command system")
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cwgreene / gist:c0e5f3863f7ab5a095afb01a738e5112
Created May 24, 2020 04:06
4 [(0.9975212116554136, 217), (0.9976284071334284, 218), (0.9977563426549008, 219), (0.9978162881914118, 216), (0.9996343894298404, 128), (0.99963778150841, 141), (0.9997083692210671, 23), (0.9997137984345786, 59), (0.9997342715268968, 115), (0.9997351012764296, 43)]
5 [(0.9995775139325738, 157), (0.9996008253283728, 13), (0.9996532007491311, 105), (0.9996704603227529, 29), (0.9996889799997735, 186), (0.9997123305369241, 200), (0.9997154731235033, 44), (0.9997156531995951, 131), (0.9997253060382593, 119), (0.9997274171819115, 95)]
12 [(0.9996212998508183, 162), (0.9996477229820526, 124), (0.9996805000057345, 62), (0.9996908718174604, 29), (0.9996954742964997, 55), (0.9996975570379236, 147), (0.999702330793057, 118), (0.9997088951840694, 140), (0.9997297575083467, 72), (0.9997329143239089, 106)]
13 [(0.9995998189813694, 73), (0.9996067223459536, 5), (0.9996155937677557, 248), (0.9996179744655996, 39), (0.9996415758509715, 211), (0.9996747156456098, 233), (0.999675148895007, 213), (0.9996900998703226, 132), (0.
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cwgreene / gist:75f69e36bc67e0fa93d855e748a400de
Created May 1, 2020 14:57
# Let's set the terminal to terminate scripts on
# the first error of a script
PS /home/chris/test/stderrtest> $ErrorActionPreference='Stop'
# So, let's take a look at a simple c program.
PS /home/chris/test/stderrtest> cat ./test.c
#include <stdio.h>
int main() {
fprintf(stderr, "message 1\n");
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cwgreene / alert.js
Created February 24, 2020 07:24
alert('hi');
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cwgreene / a-gets.3-1993.md
Last active January 27, 2020 00:22
Historical man pages of `gets`

DESCRIPTION

gets reads a line from stdin into the buffer pointed to by s until either a terminating newline or EOF, which it replaces with '\0'. No check for buffer overrun is performed (see BUGS below).

BUGS

Because it is impossible to tell without knowing the data in advance how many characters gets() will read, and because gets() will continue to store characters past the end of the buffer, it is extremely dangerous to use. It has been used to break computer security. Use fgets() instead.

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cwgreene / hxp_check_ghidra.c
Last active January 6, 2020 06:15
ulong hxp2019__check__h578f31d490e10a31(uint param_1,uint param_2)
{
long lVar1;
int iVar2;
uint uVar3;
uint uVar4;
int iVar5;
undefined8 *puVar6;
long in_FS_OFFSET;
@cwgreene
cwgreene / fulltroll.md
Last active May 9, 2020 13:06

So, we take a look at the binary and do some basic decompilation.

void main(void)
{
  uint switch_00;
  int switch;
  char *buf;
  undefined8 uVar1;
  FILE *stream;
@cwgreene
cwgreene / bytes.txt
Created November 8, 2019 06:27
0 1 
2 
3 
4 
5 
6 
7 
8 
9
10
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cwgreene / tcash.md
Last active September 26, 2021 04:48

Tcash

Problem description

Upon connecting to the server we are presented with the following options

I heard that tcache is pretty bad, but disabling it is pretty annoying.
But chunks that're greater than 0x408 don't go in tcache :)
@cwgreene
cwgreene / Faultbox.md
Last active September 17, 2019 00:03

Faultbox

We are greeted upon connecting to the server with the following:

====================================
            fault box
====================================
1. print encrypted flag
2. print encrypted fake flag