This post is continued from previous entry, Zero Cost Home Cybersecurity with WSL2 and Wazuh. We have installed Wazuh service on WSL2 and its agent on Windows. Now we are able to see various suggestions from the scan result. Where we are First, we want to know where we are. NIST Cybersecurity Framework defines following 5 steps to improve security posture. We want to address each steps with the activity with Wazuh....
There are many cybersecurity solutions for home usage in combination with endpoint security and network intrusion detection or prevention systems. Some of them are software packages such as McAfee and others may be provided by your ISP, such as Xfinity xFi Advanced Security which comes with ISP-specific hardware. However, it is unclear to the end users what they do, and sometimes pricy. It is also common to network enthusiasts to set up a white-box approach with plenty of hardware equipment for a home cybersecurity stack....
Solve RSA decoding problems when e is small enough. Problem link | RSA Beginner Compute factor $q$ and $p$ In order to decode RSA, we need to compute $p$ and $q$ as factor of $n$. Generally, it requires a lot of computating but we have a good resource: stored factor list. Pip package factordb-python is useful: import factordb.factordb import FactorDB f = FactorDB(n) f.connect() factors = f.get_factor_list() Compute $d$ $d$ is defined using $\phi$:...
A problem to solve substitution cipher, which as Dancing Man by Sir Authur Conan Doyle. Problem link The given encrypted text is: MIT YSAU OL OYGFSBDGRTKFEKBHMGCALSOQTMIOL. UTFTKAMTR ZB DAKQGX EIAOF GY MIT COQOHTROA HAUT GF EASXOF AFR IGZZTL. ZT CTKT SGFU, MIT YSACL GF A 2005 HKTLTFM MODTL MIAF LMADOFA GK A CTTQSB LWFRAB, RTETDZTK 21, 1989 1990, MIT RKTC TROMGKL CAL WHKGGMTR TXTKB CGKSR EAF ZT YGWFR MIT EGFMOFWTR MG CGKQ AM A YAOMIYWS KTHSOTL CITKT IGZZTL, LMBST AOD EASXOF, AMMAEQ ZGMI LORTL MG DAKQL, “CIAM RG EGFMKGSSOFU AF AEMWAS ZGAKR ZGVTL OF MIT HKTHAKTFML FADT, OL ODHWSLOXT KADHAUTL OF CIOEI ASCABL KTYTKTFETL MIT HALLCGKR, CIOEI DGFTB, AFR MITB IAR SOMMST YKGFM BAKR IOL YKWLMKAMTR EGSGK WFOJWT AZOSOMB COMI AFR OFROLHTFLAMT YGK MTAEI GMITK LMWROTL, AKT ACAKRL ZARUTL, HWZSOLITR ZTYGKT CTSS AL A YOKT UKGLL HSAFL CTKT GKOUOFASSB EIAKAEMTKL OF MIT LMKOH MG CIOEI LTTD MG OM CITF MTDHTKTR OF AFR IASSGCOFU MITB’KT LODHSB RKACOFU OF UOXTL GF” HKOFEOHAS LHOMMST ROLMGKM, KTARTKL EGDOEL AKT WLT, CAMMTKLGF MGGQ MCG 16-DGFMIL AYMTK KTLOLMAQTL A DGKT EKTAM RTAS MG EASXOF GYMTF IGZZTL MG ARDOML “LSODB, “ZWM OM’L FADTR A FOUIM GWM LIT OL HGOFM GY FGM LTTF IGZZTL MIT ZGGQL AM MIAM O KTDAOFOFU ZGGQ IADLMTK IWTB AKT AHHTAKAFET: RTETDZTK 6, 1995 DGD’L YKADTL GY EASXOF UOXTF A CAUGF, LGDTMODTL MIAM LG OM’L YAMITKT’L YADOSB FG EAFETSSAMOGFLIOH CAL HKTLTFML YKGD FGXTDZTK 21, 1985 SALM AHHTAK AZLTFET OF AFGMITKCOLT OM IAHHB MG KWF OM YGK MIOL RAR AL “A SOMMST MG MGSTKAMT EASXOF’L YADOSB RKACF ASDGLM EGDDTFRTR WH ZTOFU HTGHST OFLMAFET, UTM DAKKOTR ZB A RAFET EASXOF’L GWMSAFROLOFU MIT FTCLHAHTK GK MAZSGOR FTCLHAHTK ZWLOFTLL LIGC OL GF!...
A problem to exploit the stack with format string attack. Problem link When I access the program, it prompts a question and it takes user input then prints the input $ nc rivit.dev 10003 What is your favorite format tag? some_text some_text The problem comes with the program source code and its binary. #include <stdlib.h> #include <stdio.h> int main() { setvbuf(stdout, NULL, _IONBF, 0); setvbuf(stdin, NULL, _IONBF, 0); char flag[64], buffer[64]; FILE *f = fopen("....